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19-1443; Rev 0; 4/99
15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches
General Description
The MAX4558/MAX4559/MAX4560 are low-voltage, CMOS analog ICs configured as an 8-to-1 multiplexer (MAX4558), a dual 4-to-1 multiplexer (MAX4559), and a triple single-pole/double-throw (SPDT) switch (MAX4560). Each switch is protected against 15kV electrostatic discharge (ESD) shocks, without latchup or damage. These CMOS devices can operate continuously from dual supplies of 2V to 6V or from a +2V to +12V single supply. Each switch can handle Rail-to-Rail(R) analog signals. The off-leakage current is only 1nA at +25C or 10nA at +85C max. All digital inputs have +0.8V to +2.4V logic thresholds, ensuring TTL/CMOS-logic compatibility when using a single +5V supply or dual 5V supplies.
Features
o ESD-Protected X, Y, Z and X_, Y_, Z_ Pins 15kV (Human Body Model) 12kV (IEC 1000-4-2, Air-Gap Discharge) 8kV (IEC 1000-4-2, Contact Discharge) o Pin-Compatible with Industry-Standard 74HC4051/74HC4052/74HC4053 o Guaranteed On-Resistance 220 with Single +5V Supply 160 with 5V Supply o RON Match Between Channels: 2 (typ) o Guaranteed Low leakage Currents 1nA Off-Leakage (at +25C) 1nA On-Leakage (at +25C) o TTL-Compatible Inputs with +5V/5V Supplies o Low Distortion: < 0.02% (600) o Low Crosstalk: < -93dB (50) o High Off-Isolation: < -96dB (50)
MAX4558/MAX4559/MAX4560
Applications
Battery-Operated Equipment Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits High-ESD Environments
Ordering Information
PART MAX4558CEE MAX4558CSE MAX4558CPE TEMP. RANGE 0C to +70C 0C to +70C 0C to +70C PIN-PACKAGE 16 QSOP 16 Narrow SO 16 Plastic DIP
Ordering Information continued at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Pin Configurations/Functional Diagrams
TOP VIEW
MAX4558
X4 1 X6 2 X3 X7 4 X5 5 ENABLE 6 VEE 7 GND 8 LOGIC 16 VCC 15 X2 14 X1 13 X0 12 X3 11 A 10 B 9 C Y0 1 Y2 2 Y3 Y3 4 Y1 5 ENABLE 6 VEE 7 GND 8
MAX4559
16 VCC 15 X2 14 X1 13 X 12 X0 11 X3 LOGIC 10 A 9 B Y1 1 Y0 2 Z1 3 Z4 Z0 5 ENABLE 6 VEE 7 GND 8
MAX4560
16 VCC 15 Y 14 X 13 X1 12 X0 11 A 10 B 9 C
DIP/SO/QSOP
DIP/SO/QSOP
DIP/SO/QSOP
________________________________________________________________ Maxim Integrated Products
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches MAX4558/MAX4559/MAX4560
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to VEE) VCC ........................................................................ -0.3V to +13V Voltage into Any Terminal (Note 1).... (VEE - 0.3V) to (VCC + 0.3V) Continuous Current into Any Terminal .............................10mA Peak Current, X, Y, Z, X_, Y_, Z_ (pulsed at 1ms, 10% duty cycle) ..................................30mA ESD per Method IEC 1000-4-2 (X, Y, Z, X_, Y_, Z_) Air-Gap Discharge ......................................................... 12kV Contact Discharge ............................................................8kV ESD per Method 3015.7 VCC, VEE, A, B, C, ENABLE, GND ................................ 2.5kV X, Y, Z, X_, Y_, Z_............................................................15kV Continuous Power Dissipation (TA = +70C) QSOP (derate 8.00mW/C above +70C) .................... 640mW Narrow SO (derate 8.70mW/C above +70C) .............696mW DIP (derate 10.53mW/C above +70C) .......................842mW Operating Temperature Ranges MAX45_ _C_E ......................................................0C to +70C MAX45_ _E_E ...................................................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10sec) .............................+300C
Note 1: Signals on any terminal exceeding VCC or VEE are clamped by internal diodes. Limit forward diode current to maximum current rating.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS--Dual 5V Supplies
(VCC = +4.5V to +5.5V, VEE = -4.5V to -5.5V, V_H = +2.4V, V_L = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER ANALOG SWITCH Analog Signal Range VX_, VY_, VZ_, VX, VY, VZ RON RON RFLAT(ON) IX_(OFF), IY_(OFF), IZ_(OFF) IX(OFF), IY(OFF), IZ(OFF) VCC = 4.5V; VEE = -4.5V; IX, IY, IZ = 1mA; VX_, VY_, VZ_ = 3V VCC = 4.5V; VEE = -4.5V; IX, IY, IZ = 1mA; VX_, VY_, VZ_ = 3V VCC = 4.5V; VEE = -4.5V; IX, IY, IZ = 1mA; VX_, VY_, VZ_ = -3V, 0V, 3V VCC = 5.5V; VEE = -5.5V; VX_, VY_, VZ_ = 4.5V, -4.5V; VX, VY, VZ = -4.5V, 4.5V VCC = 5.5V; VEE = -5.5V; VX_, VY_, VZ_ = 4.5V, -4.5V; VX, VY, VZ = -4.5V, 4.5V MAX4558 MAX4559 MAX4560 MAX4558 MAX4559 MAX4560 C, E +25C C, E +25C C, E +25C C, E +25C C, E +25C C, E +25C C, E +25C C, E +25C C, E -1 -10 -2 -20 -1 -10 -2 -20 -1 -10 0.002 0.002 0.002 0.002 0.002 0.002 0.002 3 2 V110 V+ 160 180 6 8 8 10 1 nA 10 2 20 1 10 2 20 1 10 nA nA V SYMBOL CONDITIONS TA MIN TYP MAX (Note 2) UNITS
On-Resistance On-Resistance Match Between Channels (Note 3) On-Resistance Flatness (Note 4) X_, Y_ , Z_ Off-Leakage Current (Note 5)
X, Y, Z Off-Leakage Current (Note 5)
X, Y, Z On-Leakage Current (Note 5)
IX(ON), IY(ON), IZ(ON)
VCC = 5.5V; VEE = -5.5V; VX_, VY_, VZ_ = 4.5V, 4.5V; VX, VY, VZ = 4.5V, -4.5V
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches
ELECTRICAL CHARACTERISTICS--Dual 5V Supplies (continued)
(VCC = +4.5V to +5.5V, VEE = -4.5V to -5.5V, V_H = +2.4V, V_L = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER DIGITAL I/O Input Logic High Input Logic Low Input Current Logic High or Low POWER SUPPLY Power-Supply Range Supply Current, VCC or VEE ICC VCC, VEE VCC = 5.5V; VEE = -5.5V; VA, VB, VC, VEN = 0 or VCC C, E +25C C, E +25C C, E +25C C, E +25C C, E +25C +25C 4 15 2.4 90 55 2 -1 -10 90 6 1 10 150 175 120 150 150 175 V A VA_, VB_, VC_, VEN VA_, VB_, VC_, VEN VA_, VB_, VC_, VEN VA, VB, VC, VEN = VCC or 0 C, E C, E C, E -1 2.4 0.8 1 V V A SYMBOL CONDITIONS TA MIN TYP MAX (Note 2) UNITS
MAX4558/MAX4559/MAX4560
SWITCH DYNAMIC CHARACTERISTICS Turn-On Time Turn-Off Time Address Transition Time Break-Before-Make Delay Charge Injection tON tOFF tTRANS tOPEN VX_, VY_, VZ_ = 3V; RL = 300; CL = 35pF; Figure 1 VX_, VY_, VZ_ = 3V; RL = 300; CL = 35pF; Figure 1 VX_, VY_, VZ_ = 3V; RL = 300; CL = 35pF; Figure 1 VX_, VY_, VZ_ = 3V; RL = 300; CL = 35pF; Figure 2 VX, VY, VZ = 0; RS = 0; CL = 1nF; Figure 3 VX_, VY_, VZ_ = 0; f = 1MHz; Figure 5 MAX4558 VX, VY, VZ = GND; f = 1MHz; Figure 5 VX_, VY_, VZ_ = GND; f = 1MHz; Figure 5 MAX4559 MAX4560 MAX4558 Switch On-Capacitance CON MAX4559 MAX4560 +25C +25C ns ns ns ns pC
Q
CX_(OFF), VX_, VY_, VZ_ Off-Capacitance CY_(OFF), CZ_(OFF) VX, VY, VZ Off-Capacitance CX(OFF), CY(OFF), CZ(OFF)
+25C
2.5 10 6 4 15 11 9
pF
pF
pF
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches MAX4558/MAX4559/MAX4560
ELECTRICAL CHARACTERISTICS--Dual 5V Supplies (continued)
(VCC = +4.5V to +5.5V, VEE = -4.5V to -5.5V, V_H = +2.4V, V_L = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER Off-Isolation Channel-to-Channel Crosstalk Total Harmonic Distortion Total Harmonic Distortion ESD SCR Positive Holding Current ESD SCR Negative Holding Current SYMBOL VISO VCT THD THD IH+ IHCONDITIONS CL = 15pF; RL = 50; f = 100kHz; VX_, VY_, VZ_ = 1VRMS; Figure 4 CL = 15pF; RL = 50; f = 100kHz; VX_, VY_, VZ_ = 1VRMS; Figure 4 RL = 600, TBD VY_, VZ_ =f 5Vp-p; to L 600; VX_, = 5Vp-p, = 20Hz f = 20Hz to 20kHz TA +25C +25C C, E +25C +25C +85C +25C +85C MIN TYP MAX (Note 2) -96 -93 0.02 110 70 95 65 180 UNITS dB dB % mA mA
ELECTRICAL CHARACTERISTICS--Single +5V Supply
(VCC = +4.5V to +5.5V, VEE = 0, V_H = +2.4V, V_L = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER ANALOG SWITCH Analog Signal Range VX_, VY_, VZ_, VX, VY, VZ RON VCC = 4.5V; IX, IY, IZ = 1mA; VX, VY, VZ = 3V VCC = 4.5V; IX, IY, IZ = 1mA; VX, VY, VZ = 3V VCC = 5.5V; VX, VY, VZ = 1V, 4.5V, VX, VY, VZ = 4.5V, 1V VCC = 5.5V; VX_, VY_, VZ_ = 1V, 4.5V; VX, VY, VZ = 4.5V, 1V MAX4558 MAX4559 MAX4560 MAX4558 MAX4559 MAX4560 C, E +25C C, E +25C C, E +25C C, E +25C C, E +25C C, E +25C C, E +25C C, E -1 -10 -2 -20 -1 -10 -2 -20 -1 -10 0.002 0.002 0.002 0.002 0.002 0.002 3 0 150 V+ 220 350 10 12 1 nA 10 2 20 1 10 2 20 1 10 nA nA V SYMBOL CONDITIONS TA MIN TYP MAX (Note 2) UNITS
On-Resistance On-Resistance Match Between Channels (Note 3, 6) X_, Y_ , Z_ Off-Leakage Current (Note 6)
RON IX_(OFF), IY_(OFF), IZ_(OFF) IX(OFF), IY(OFF), IZ(OFF)
X, Y, Z Off-Leakage Current (Note 6)
X, Y, Z On-Leakage Current (Note 6)
IX(ON), IY(ON), IZ(ON)
VCC = 5.5V; VX_, VY_, VZ_ = 1V, 4.5V; VX, VY, VZ = 1V, 4.5V
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches
ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued)
(VCC = +4.5V to +5.5V, VEE = 0, V_H = +2.4V, V_L = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER DIGITAL I/O Input Logic High Input Logic Low Input Current Logic High or Low VA_, VB_, VC_, VEN VA_, VB_, VC_, VEN VA_, VB_, VC_, VEN VA, VB, VC, VEN = VCC or 0 C, E C, E C, E -1 2.4 0.8 1 V V A SYMBOL CONDITIONS TA MIN TYP MAX (Note 2) UNITS
MAX4558/MAX4559/MAX4560
SWITCH DYNAMIC CHARACTERISTICS (Note 6) Turn-On Time Turn-Off Time Address Transition Time Break-Before-Make Delay Charge Injection POWER SUPPLY VCC Supply Current Power-Supply Range ICC VCC = 5.5V; VAH, VBH, VCH, VEN = 0 or VCC VCC, VEE +25C C, E C, E -1 -10 +2 1 10 +12 A V tON tOFF tTRANS tOPEN Q VX_, VY_, VZ_ = 3V; RL = 300; CL = 35pF; Figure 1 VX_, VY_, VZ_ = 3V; RL = 300; CL = 35pF; Figure 1 VX_, VY_, VZ_ = 3V; RL = 300; CL = 35pF; Figure 1 VX_, VY_, VZ_ = 3V; RL = 300; CL = 35pF; Figure 3 VX, VY, VZ = 2.5V; RS = 0; CL = 1nF; Figure 3 +25C C, E +25C C, E +25C C, E C, E +25C 10 1 110 50 110 250 300 150 200 250 300 ns ns ns ns pC
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches MAX4558/MAX4559/MAX4560
ELECTRICAL CHARACTERISTICS--Single +3V Supply
(VCC = +2.7V to +3.6V, V_H = +2.0V, V_L = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER ANALOG SWITCH On-Resistance DIGITAL I/O Input Logic High Input Logic Low Input Current Logic High or Low VA_, VB_, VC_, VEN VA_, VB_, VC_, VEN VA_, VB_, VC_, VEN VA, VB, VC, VEN = VCC or 0 C, E C, E C, E -1 1.5 0.5 1 V V A RON VCC = 2.7V; IX, IY, IZ = 0.1mA; VX, VY, VZ = 1.5V +25C C, E 220 400 450 SYMBOL CONDITIONS TA MIN TYP MAX (Note 2) UNITS
SWITCH DYNAMIC CHARACTERISTICS (Note 6) Turn-On Time Turn-Off Time Address Transition Time Break-Before-Make Delay Charge Injection POWER SUPPLY VCC Supply Current ICC VCC = 3.6V; VA_, VB_, VC_, VEN = 0 or VCC +25C C, E 1 -10 0.5 1 10 A tON tOFF tTRANS tOPEN Q VX_, VY_, VZ_ = 1.5V; RL = 1k; CL = 35pF; Figure 1 VX_, VY_, VZ_ = 1.5V; RL = 1k; CL = 35pF; Figure 1 VX_, VY_, VZ_ = 1.5V; RL = 1k; CL = 35pF; Figure 1 VX_, VY_, VZ_ = 1.5V; RL = 1k; CL = 35pF; Figure 2 VX, VY, VZ = 1.5V; RS = 0; CL = 1nF; Figure 3 +25C C, E +25C C, E +25C C, E C, E +25C 1.5 0.5 180 90 180 350 400 250 300 350 400 ns ns ns ns pC
Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Note 3: RON = RON(MAX) - RON(MIN). Note 4: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges; i.e., VON = 3V to 0 and 0 to -3V. Note 5: Leakage parameters are 100% tested at the maximum-rated hot operating temperature and are guaranteed by correlation at TA = +25C. Note 6: Guaranteed by design, not production tested.
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches
Typical Operating Characteristics
(VCC = +5V, VEE = -5V, TA = +25C, unless otherwise noted.)
MAX4558/MAX4559/MAX4560
ON-RESISTANCE vs. VX, VY, VZ (DUAL SUPPLIES)
MAX4558-01
ON-RESISTANCE vs. VX, VY, VZ (SINGLE SUPPLY)
MAX4558-02
ON-RESISTANCE vs. VX, VY, VZ AND TEMPERATURE (DUAL SUPPLIES)
130 120 TA = +85C TA = +70C
MAX4558-03
180 160 140 120 RON () VCC = +2V VEE = -2V
480 420 360 RON () VCC = +2.7V 240 VCC = +3.3V 180 120 60 0 VCC = +5V VEE = 0 VCC = +2V
140
110 RON () 100 90 80 70 60 50 40 -5 -4 -3 -2 -1 0 1 2 3 4 5 VX, VY, VZ (V) VCC = +5V VEE = -5V TA = -40C TA = +25C TA = 0C
300
100 80 60 40 20 0 -5 -4 -3 -2 -1 0 1 VCC = +5V VEE = -5V
VCC = +3V VEE = -3V
2
3
4
5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VX, VY, VZ (V)
VX, VY, VZ (V)
ON-RESISTANCE vs. VX, VY, VZ AND TEMPERATURE (SINGLE SUPPLY)
170 160 150 140 130 120 110 100 90 80 70 60 50 40 0 VX, VY, VZ (V)
MAX4558-04
ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE
MAX4558-05
CHARGE INJECTION vs. VX, VY, VZ
10 8 6 4 Q(pC) 2 0 -2 -4 -6 -8 -10 -5 -4 -3 -2 -1 0 1 2 3 4 5 VX, VY, VZ (V) VCC = +5V VEE = -5V VCC = +3V VEE = 0 VCC = +5V VEE = 0
MAX4558-06
1000
12
TA = +85C
LEAKAGE CURRENT (pA)
100
ON_LEAKAGE IX, IY, IZ
RON ()
TA = 0C
TA = +25C TA = -40C
TA = +70C
10
OFF_LEAKAGE IX, IY, IZ
1 OFF_LEAKAGE IX_, IY_, IZ_ 0.1 0.01 VCC = +5V VEE = -5V -50 -35 -20 -5 10 25 40 55 70 85 100 TEMPERATURE (C)
VCC = +5V VEE = 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
POWER-SUPPLY CURRENT vs. TEMPERATURE
MAX4558-07
SCR HOLDING CURRENT vs. TEMPERATURE
180 HOLDING CURRENT (mA) 160 140 120 100 80 60 40 20 IHtON, tOFF (ns) IH+ 130 110 90 70 50 30 -60 -40 -20 0 20 40 60 80 100
MAX4558-08
TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE
MAX4558-09
10 VCC = +5V VEE = -5V VA, VB, VC, VENABLE = 0.5V ICC IEE 0.01
200
170 150
1 ICC, IEE (nA)
0.1
tON
tOFF
0.001 0.0001 -50 -30 -10 10 30 50 70 90 100 TEMPERATURE (C)
0 TEMPERATURE (C)
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 SUPPLY VOLTAGE (VCC, VEE)
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches MAX4558/MAX4559/MAX4560
Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, TA = +25C, unless otherwise noted.)
TURN-ON/TURN-OFF TIME vs. TEMPERATURE
MAX4558-10
TOTAL HARMONIC DISTORTION vs. FREQUENCY
MAX4558-11
FREQUENCY RESPONSE
-10 -20 RESPONSE (dB) -30 -40 -50 -60 -70 -80 -90 CROSSTALK OFF-ISOLATION VCC = +5V VEE = -5V 10k 100k 1M 10M 100M 1G INSERTION LOSS
MAX4558 toc12
110 100 tON 90 tON, tOFF (ns) 80 70 tOFF 60 50 40 -40 -20 0 20 40 60 80 TEMPERATURE (C) VCC = +5V VEE = -5V
0.025 0.024 0.023 THD (%) 0.022 0.021 0.020 0.019 0.018 10 100 1k FREQUENCY (Hz) 10k VCC = +5V VEE = -5V 600 IN AND OUT
0
100k
-100 FREQUENCY (Hz)
Pin Description
PIN MAX4558 1, 2, 4, 5, 12-15 3 -- -- -- -- -- -- 6 7 8 11 10 9 -- -- -- -- -- 16 MAX4559 -- -- 11, 12, 14, 15 13 -- -- -- -- 6 7 8 10 9 -- 1, 2, 4, 5 3 -- -- -- 16 MAX4560 -- -- -- 14 13 12 1 2 6 7 8 11 10 9 -- 15 5 3 4 16 NAME X0-X7 X X0, X1, X2, X3 X X1 X0 Y1 Y0 ENABLE VEE GND A B C Y0, Y1, Y2, Y3 Y Z0 Z1 Z VCC FUNCTION Analog Switch Inputs 0-7 Analog Switch Output Analog Switch "X" Inputs 0-3 Analog Switch "X" Output Analog Switch "X" Normally Open Input Analog Switch "X" Normally Closed Input Analog Switch "C" Normally Open Input Analog Switch "C" Normally Closed Input Digital Enable Input. Connect to GND to enable device. Drive high to set all switches off. Negative Analog Supply Voltage Input. Connect to GND for single-supply operation. Ground Digital Address "A" Input Digital Address "B" Input Digital Address "C" Input Analog Switch "Y" Inputs 0-3 Analog Switch "Y" Output Analog Switch "Z" Normally Closed Input Analog Switch "Z" Normally Open Input Analog Switch "Z" Output Positive Analog and Digital Supply Voltage Input
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches
_______________Detailed Description
The MAX4558/MAX4559/MAX4560 are ESD protected (per IEC 1000-4-2) at their X, Y, Z output pins and X_, Y_, Z_ input pins. These ICs feature on-chip bidirectional silicon-controlled rectifiers (SCRs) between the protected pins and GND. The SCRs are normally off and have a negligible effect on the switches' performance. During an ESD strike, the voltages at the protected pins go Beyond-the-RailsTM, causing the corresponding SCR(s) to turn on in a few nanoseconds. This bypasses the surge current safely to ground. This protection method is superior to using diode clamps to the supplies. Unless the supplies are very carefully decoupled through low-ESR capacitors, the ESD current through a diode clamp could cause a significant spike in the supplies, which might damage or compromise the reliability of any other chip powered by those same supplies. In addition to the SCRs at the ESD-protected pins, these devices provide internal diodes connected to the supplies. Resistors placed in series with these diodes limit the current flowing into the supplies during an ESD strike. The diodes protect the X, Y, Z and X_, Y_, Z_ pins from overvoltages due to improper power-supply sequencing. Once the SCR turns on because of an ESD strike, it remains on until the current through it falls below its "holding current." The holding current is typically 110mA in the positive direction (current flowing into the pin) and 95mA in the negative direction at room temperature (see SCR Holding Current vs. Temperature in the Typical Operating Characteristics). The system should be designed so that any sources connected to the X, Y, Z or X_, Y_, Z_ pins are current limited to a value below the holding current. This ensures that the SCR turns off and normal operation resumes after an ESD event. Keep in mind that the holding currents vary significantly with temperature; they drop to 70mA (typ) in the positive direction and 65mA (typ) in the negative direction, at +85C worst case. To guarantee turn-off of the SCRs under all conditions, current limit the sources connected to these pins to not more than half of these typical values. When the SCR is latched, the voltage across it is about 3V, depending on the polarity of the pin current. The supply voltages do not affect the holding currents appreciably. When one or more SCRs turn on because of an ESD event, all switches in the part turn off to prevent current through the switch(es) from sustaining latchup. Even though most of the ESD current flows to GND through the SCRs, a small portion of it goes into the supplies. Therefore, it is a good idea to bypass the supply pins with 100nF capacitors to the ground plane.
MAX4558/MAX4559/MAX4560
__________Applications Information
ESD Protection
The MAX4558/MAX4559/MAX4560 are characterized for protection to the following: * 15kV using the Human Body Model * 8kV using the Contact Discharge method specified in IEC 1000-4-2 (formerly IEC 801-2) * 12kV using the Air-Gap Discharge method specified in IEC 1000-4-2 (formerly IEC 801-2).
Beyond-the-Rails is a trademark of Maxim Integrated Products.
Table 1. Truth Table/Switch Programming
ENABLE INPUT H L L L L L L L L SELECT INPUTS C* X L L L L H H H H B X L L H H L L H H A X L H L H L H L H MAX4558 All switches open X-X0 X-X1 X-X2 X-X3 X-X4 X-X5 X-X6 X-X7 ON SWITCHES MAX4559 All switches open X-X0, Y-Y0 X-X1, Y-Y1 X-X2, Y-Y2 X-X3, Y-Y3 X-X0, Y-Y0 X-X1, Y-Y1 X-X2, Y-Y2 X-X3, Y-Y3 MAX4560 All switches open X-X0, Y-Y0, Z-Z0 X-X1, Y-Y0, Z-Z0 X-X0, Y-Y1, Z-Z0 X-X1, Y-Y1, Z-Z0 X-X0, Y-Y0, Z-Z1 X-X1, Y-Y0, Z-Z1 X-X0, Y-Y1, Z-Z1 X-X1, Y-Y1, Z-Z1
X = Don't care * C not present on MAX4559. Note: Input and output pins are identical and interchangeable. Either may be considered an input or output; signals pass equally well in either direction.
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches MAX4558/MAX4559/MAX4560
ESD Test Conditions
ESD performance depends on several conditions. Contact Maxim for a reliability report that documents test setup, methodology, and results. terminals, not to the other switch terminal. This is why both sides of a given switch can show leakage currents of either the same or opposite polarity. VCC and GND power the internal logic and logic-level translators, and set the input logic limits. The logic-level translators convert the logic levels into switched VCC and VEE signals to drive the gates of the analog switch. This drive signal is the only connection between the logic supplies and logic signals and the analog supplies. V CC and V EE have ESD-protection diodes to GND. The logic-level thresholds are TTL/CMOS compatible when VCC is +5V. As VCC rises, the threshold increases slightly. When V CC reaches +12V, the threshold is about 3.1V (above the TTL-guaranteed high-level minimum of 2.4V, but still compatible with CMOS outputs).
Human Body Model
Figure 6 shows the Human Body Model, and Figure 7 shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the test device through a 1.5k resistor.
Power-Supply Considerations
The MAX4558/MAX4559/MAX4560 are typical of most CMOS analog switches. They have three supply pins: VCC, VEE, and GND. VCC and VEE drive the internal CMOS switches and set the limits of the analog voltage on every switch. Internal reverse ESD-protection diodes connect between each analog signal pin and both VCC and VEE. If any analog signal exceeds VCC or VEE, one of these diodes conducts. The only currents drawn from VCC or VEE during normal operation are the leakage currents of these ESD diodes. Although the ESD diodes on a given signal pin are identical and therefore fairly well balanced, they are reverse biased differently. Each is biased by either VCC or VEE and the analog signal. Their leakage currents vary as the signal varies. The difference in the two diode leakages to the VCC and VEE pins constitutes the analog signal-path leakage current. All analog leakage current flows between each input and one of the supply
High-Frequency Performance
In 50 systems, signal response is reasonably flat up to 50MHz (see Typical Operating Characteristics). Above 20MHz, the on response has several minor peaks that are highly layout dependent. The problem is not turning the switch on, but turning it off. The off-state switch acts like a capacitor and passes higher frequencies with less attenuation. At 1MHz, off-isolation is about -68dB in 50 systems, becoming worse (approximately 20dB per decade) as the frequency increases. Higher circuit impedance also degrades off-isolation. Adjacent channel attenuation is about 3dB above that of a bare IC socket and is entirely due to capacitive coupling.
10
______________________________________________________________________________________
15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches
Test Circuits/Timing Diagrams
VCC VCC VENABLE X0 X1-X7 VCC
MAX4558/MAX4559/MAX4560
VCC 50% 0V VX0 90%
A B C VENABLE 50
MAX4558
ENABLE GND VEE 300 VEE X 35pF 0V tON VOUT VOUT 90%
tOFF
VCC VCC VENABLE X0, Y0 VCC VCC 0V VX0, VY0 90% X, Y GND 50 VEE VEE 300 35pF VOUT 50%
A B
X1-X3, Y1-Y3
MAX4559
VENABLE ENABLE VOUT 0V tON 90%
tOFF
VCC A B C VENABLE VCC VENABLE X1, Y1, Z1 VCC VCC 50% 0V VX0, VY0, VZ0 VOUT 35pF 300 VEE VOUT 0V tON tOFF 90%
MAX4560
X0, Y0, Z0 VEE X, Y, Z GND VEE
90%
ENABLE 50
V- = 0 FOR SINGLE-SUPPLY OPERATION. REPEAT TEST FOR EACH SECTION.
Figure 1. Switching Times
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11
15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches MAX4558/MAX4559/MAX4560
Test Circuits/Timing Diagrams (continued)
VCC VA, VB, VC A 50 B C VCC VA, VB X0-X7 VCC 50 A B VCC VCC
X0-X3, Y0-Y3
VCC
MAX4558
ENABLE GND VEE 300 VEE VCC VA, VB, VC A, B, C 50 VCC X0, X1, Y0, Y1, Z0, Z1 VCC V+ VA, VB, VC 0V VX, VY, VZ X 35pF VOUT ENABLE
MAX4559
X, Y GND VEE 35pF 300 VEE VOUT
50%
tR < 20ns tF < 20ns
MAX4560
ENABLE GND X, Y, Z VEE 300 VEE VEE = 0 FOR SINGLE-SUPPLY OPERATION. TEST EACH SECTION INDIVIDUALLY. 35pF VOUT
80%
VOUT 0V tBBM
Figure 2. Break-Before-Make Interval
VCC VCC A CHANNEL SELECT B C VENABLE ENABLE GND 50 VEE VEE = 0V FOR SINGLE-SUPPLY OPERATION. TEST EACH SECTION INDIVIDUALLY. VCC VENABLE X_, Y_, Z_ 0V
MAX4558 MAX4559 MAX4560
X, Y, Z VEE VOUT CL = 1000pF
VOUT
VOUT
VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = VOUT * CL
Figure 3. Charge Injection
12
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches
Test Circuits/Timing Diagrams (continued)
V+ 10nF NETWORK ANALYZER 50 50
MAX4558/MAX4559/MAX4560
V+ A CHANNEL SELECT B C X_, Y_, Z_
VIN
OFF-ISOLATION = 20log
VOUT VIN VOUT VIN VOUT VIN
MAX4558 MAX4559 MAX4560
GND X, Y, Z VEE
ON-LOSS = 20log VOUT MEAS. REF. CROSSTALK = 20log 50 50
ENABLE
10nF VEE MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM AND "OFF" NO TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM AND "ON" NO TERMINAL ON EACH SWITCH. CROSSTALK (MAX4559/MAX4560) IS MEASURED FROM ONE CHANNEL X_, Y_, Z_ TO ALL OTHER CHANNELS. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
Figure 4. Off-Isolation/On-Channel Bandwidth and Crosstalk
VCC
A CHANNEL SELECT B C
VCC
X_, Y_, Z_
ENABLE
MAX4558 MAX4559 MAX4560
GND
X, Y, Z VEE
1MHz CAPACITANCE ANALYZER
VEE
Figure 5. Channel Off/On-Capacitance
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13
15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches MAX4558/MAX4559/MAX4560
Test Circuits/Timing Diagrams (continued)
RC 1M CHARGE-CURRENT LIMIT RESISTOR HIGHVOLTAGE DC SOURCE RD 1500 DISCHARGE RESISTANCE DEVICE UNDER TEST IP 100% 90% AMPERES Cs 100pF STORAGE CAPACITOR 36.8% 10% 0 0 tRL TIME tDL CURRENT WAVEFORM Ir PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE)
Figure 6. Human Body ESD Test Model
Figure 7. Human Body Model Current Waveform
Ordering Information (continued)
PART MAX4558EEE MAX4558ESE MAX4558EPE MAX4559CEE MAX4559CSE MAX4559CPE MAX4559EEE MAX4559ESE MAX4559EPE MAX4560CEE MAX4560CSE MAX4560CPE MAX4560EEE MAX4560ESE MAX4560EPE TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 16 QSOP 16 Narrow SO 16 Plastic DIP 16 QSOP 16 Narrow SO 16 Plastic DIP 16 QSOP 16 Narrow SO 16 Plastic DIP 16 QSOP 16 Narrow SO 16 Plastic DIP 16 QSOP 16 Narrow SO 16 Plastic DIP
___________________Chip Information
TRANSISTOR COUNT: 221
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15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches
Package Information
QSOP.EPS
MAX4558/MAX4559/MAX4560
______________________________________________________________________________________
15
15kV ESD-Protected, Low-Voltage, CMOS Analog Multiplexers/Switches MAX4558/MAX4559/MAX4560
Package Information (continued)
SOICN.EPS
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
PDIPN.EPS

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