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IDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
INDUSTRIAL TEMPERATURE RANGE
FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
FEATURES:
* * * *
IDT74FCT164245T
* * * * *
0.5 MICRON CMOS Technology Bidirectional interface between 3.3V and 5V buses Control inputs can be driven from either 3.3V or 5V circuits ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) VCC1 = 5V 10%, VCC2 = 2.7V to 3.6V High drive outputs (-32mA IOH, 64mA IOL) on 5V port Power off disable on both ports permits "live insertion" Typical VOLP (Output Ground Bounce) < 0.9V at VCC1 = 5V, VCC2 = 3.3V, TA = 25C Available in SSOP and TSSOP packages
The FCT164245T 16-bit 3.3V-to-5V translator is built using advanced dual metal CMOS technology. This high-speed, low-power transceiver is designed to interface between a 3.3V bus and a 5V bus in a mixed 3.3V/ 5V supply environment. This enables system designers to interface TTL compatible 3.3V components with 5V components. The direction and output enable controls operate these devices as either two independent 8-bit transceivers or one 16-bit transceiver. The A port interfaces with the 3.3V bus; the B port interfaces with the 5V bus. The direction control (xDIR) pin controls the direction of data flow. The output enable pin (xOE) overrides the direction control and disables both ports. These control signals can be driven from either 3.3V or 5V devices. The FCT164245T is ideally suited for driving high-capacitance loads and low-impedance backplanes. The output buffers are designed with power off disable capability to allow "hot insertion" of boards when used as backplane drivers. They also allow interface between a mixed supply system and external 5 volt peripherals.
DESCRIPTION:
FUNCTIONAL BLOCK DIAGRAM
1 DIR 1 48 1A1 47 2 1A2 46 3 1A3 44 5 1B3 1B2 2A3 33 16 2B3 1B1 2A2 35 14 2B2 1OE 2A1 36 13 2B1 2 DIR 2 4 25 2OE
3.3V Port
3.3V Port
1A4
43
2A4
32 17
5V Port
1A5
41 8 1B5
2A5
30 19 2B5
1A6
40 9 1B6
2A6
29 20 2B6
1A7
38 11 1B7
2A7
27 22 2B7
1A8
37 12 1B8
2A8
26 23 2B8
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
(c) 1999 Integrated Device Technology, Inc.
AUGUST 1999
DSC-2555/7
5V Port
6
1B4
2B4
IDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
1DIR 1B1 1B2
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Operating Temperature Temperature Under Bias Storage Temperature Power Dissipation DC Output Current Max -0.5 to +7 -0.5 to Vcc1+0.5 -40 to +85 -55 to +125 -55 to +125 1 -60 to +120 Unit V V C C C W mA
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
SSOP/ TSSOP TOP VIEW
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
VTERM(2)
1OE 1A1 1A2
VTERM(3) TA TBIAS TSTG PT IOUT
GND
1B3 1B4
GND
1A3 1A4
VCC1
1B5 1B6
VCC2
1A5 1A6
NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. All devices except Vcc2. 3. Power supply terminal Vcc2.
GND
1B7 1B8 2B1 2B2
GND
1A7 1A8 2A1 2A2
CAPACITANCE (TA = +25C, F = 1.0MHz)
Symbol CIN CI/O Parameter(1) Input Capacitance I/O Capacitance Conditions VIN = 0V VOUT = 0V Typ. 3.5 3.5 Max. 6 8 Unit pF pF
NOTE: 1. This parameter is measured at characterization but not tested.
GND
2B3 2B4
GND
2A3 2A4
PIN DESCRIPTION
Pin Names xOE xDIR xAx xBx Description Output Enable Input (Active LOW) Direction Control Input Side A Inputs or 3-State Outputs (3.3V Port) Side B Inputs or 3-State Outputs (5V Port)
VCC1
2B5 2B6
VCC2
2A5 2A6
GND
2B7 2B8 2DIR
GND
2A7 2A8 2OE
FUNCTION TABLE(1)
Inputs xOE L L H xDIR L H X Outputs Bus B Data to Bus A Bus A Data to Bus B High Z State
In the 74FCT164245T, the condition of VCC1 (VCC2 - 0.5V) must be maintained at all times. For the range of VCC1 = (VCC2 - 0.5V) to VCC1 = (VCC2 + 0.9V), both the A and B ports will remain in a High-Impedance state.
POWER SUPPLY SEQUENCING
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedance
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IDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (A PORT, 3.3V)
Following Conditions Apply Unless Otherwise Specified: VCC1 = 5V 10%, VCC2 = 2.7V to 3.6V, Industrial: TA = -40C to +85C
Symbol VIH VIL IIH IIL VIK VOH Parameter Input HIGH Level (Input and I/O pins) Input LOW Level (Input and I/O pins) Input HIGH Current (Input pins) Input HIGH Current (I/O pins) Input LOW Current (Input pins) Input LOW Current (I/O pins) Clamp Diode Voltage Output HIGH Voltage VCC2 = Min., IIN = -18mA VCC1 = VCC2 = Min. VIN = VIH or VIL VCC2 = 3V VIN = VIH or VIL VOL Output LOW Voltage VCC1 = Min. VCC2 = Min. VIN = VIH or VIL VCC = 3V VIN = VIH or VIL IOFF IOS IO VH ICC2 ICC2H ICC2Z Input/Output Power Off Leakage Short Circuit Current(4) Output Drive Current Input Hysteresis Quiescent Power Supply Current VCC1 = 0V, VCC2 = 0V, VIN or VO 4.5V VCC1 = Max., VCC2 = Max., VO = GND(3) VCC1 = Max., VCC2 = Max., VO = 1.5V(3) -- VCC1 = Max. VCC2 = Max. VIN = GND or VCC2 -- -70 -40 -- -- -- -105 -60 150 0.35 100 -150 -90 -- 2 A mA mA mV mA IOL = 0.1mA IOL = 16mA IOL = 24mA IOL = 24mA -- -- -- -- -- 0.2 0.3 0.3 0.2 0.4 0.55 0.5 V IOH = -8mA 2.4 3 -- IOH = -0.1mA Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC1 = Max. VCC2 = Max. VI = 5.5V VI = VCC2 VI = GND VI = GND Min. 2 -0.5 -- -- -- -- -- VCC2 -0.2 Typ.(2) -- -- -- -- -- -- -0.7 -- Max. 5.5 0.8 5 15 5 15 -1.2 -- V V A Unit V V
NOTES: 1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC1 = 5V, VCC2 = 3.3V, +25C ambient. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. This parameter is guaranteed but not tested.
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IDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (B PORT, 5V)
Following Conditions Apply Unless Otherwise Specified: VCC1 = 5V 10%, VCC2 = 2.7V to 3.6V, Industrial: TA = -40C to +85C
Symbol VIH VIL IIH IIL VIK VOH Parameter Input HIGH Level (Input and I/O pins) Input LOW Level (Input and I/O pins) Input HIGH Current (Input pins) Input HIGH Current (I/O pins) Input LOW Current (Input pins) Input LOW Current (I/O pins) Clamp Diode Voltage Output HIGH Voltage VCC1 = Min., IIN = -18mA VCC1 = Min. VCC2 = Min. VIN = VIH or VIL VOL Output LOW Voltage VCC1 = Min. VCC2 = Min. VIN = VIH or VIL IOFF IOS IO VH ICC2 ICC2H ICC2Z Input/Output Power Off Leakage Short Circuit Current Input Hysteresis Quiescent Power Supply Current
(4)
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC1 = Max. VCC2 = Max. VI = GND VI = VCC1
Min. 2 -0.5 -- -- -- -- --
Typ.(2) -- -- -- -- -- -- -0.7 3.5 3.5 3 0.2
Max. 5.5 0.8 5 15 5 15 -1.2 -- -- -- 0.55
Unit V V A
V V
IOH = -3mA IOH = -15mA IOH = -32mA(5) IOL = 64mA
2.5 2.4 2 --
V
VCC1 = 0V, VCC2 = 0V, VIN or VO 4.5V VCC1 = Max., VCC2 = Max., VO = GND -- VCC1 = Max. VCC2 = Max. VIN = GND or VCC2
(3)
-- -80 -50 -- --
-- -140 -75 150 0.08
100 -225 -180 -- 1.5
A mA mA mV mA
Output Drive Current
VCC1 = Max., VCC2 = Max., VO = 2.5V(3)
NOTES: 1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC1 = 5V, VCC2 = 3.3V, +25C ambient. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. This parameter is guaranteed but not tested. 5. Duration of the condition cannot exceed one second.
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IDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol ICC ICCD Parameter Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply Current(4) Test Conditions(1) VCC1 = Max., VCC2 = Max. VIN = VCC2 - 0.6V(3) VCC1 = Max., VCC2 = Max. Outputs Open xOE = xDIR = GND One Input Togging 50% Duty Cycle VCC1 = Max., VCC2 = Max. Outputs Open fI = 10MHz 50% Duty Cycle xOE = xDIR = GND One Bit Toggling VCC1 = Max., VCC2 = Max. Outputs Open fI = 2.5MHz 50% Duty Cycle xOE = xDIR = GND Sixteen Bits Toggling
NOTES: 1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC1 = 5V, VCC2 = 3.3V, +25C ambient. 3. Per TTL driven input. All other inputs at VCC or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested. 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC1 + ICC2 + ICC DHNT + ICCD (fCPNCP/2 + fiNi) ICC1 = Quiescent Current (ICC1L, ICC1H and ICC1Z) ICC2 = Quiescent Current (ICC2L, ICC2H and ICC2Z) ICC = Power Supply Current for a TTL High Input DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current caused by an Input Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) NCP = Number of Clock Inputs at fCP fi = Input Frequency Ni = Number of Inputs at fi
Min. --
Typ.(2) 12 75
Max. 30 120
Unit A A/ MHz
VIN = VCC2 VIN = GND
--
IC
Total Power Supply Current(6)
VIN = VCC2 - 0.6V VIN = GND
--
1.2
4.7
mA
VIN = VCC2 - 0.6V VIN = GND
--
3.5
8.5(5)
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IDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE(1)
Symbol tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Parameter Propagation Delay A to B Propagation Delay B to A Output Enable Time xOE to B Output Disable Time xOE to B Output Enable Time xOE to A Output Disable Time xOE to A Output Enable Time xDIR to B(3) Output Disable Time xDIR to B(3) Output Enable Time xDIR to A(3) Output Disable Time xDIR to A(3) 1.5 6 ns 1.5 6.5 ns 1.5 6 ns 1.5 6.5 ns 1.5 6 ns 1.5 6.5 ns 1.5 6 ns 1.5 6.5 ns Condition(1) CL = 50pF RL = 500 1.5 5 ns Min.(2) 1.5 Max. 5 Unit ns
NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. This parameter is guaranteed but not tested.
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IDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
6V VCC 500 VIN Pulse Generator RT D.U.T. 50pF CL 500 VOUT Open GND
SWITCH POSITION
Test Open Drain Disable Low Enable Low Disable High Enable High All Other Tests Switch 6V GND Open
DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Test Circuits for All Outputs
DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V
tSU
tH
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
1.5V
tREM
1.5V
tSU
tH
Pulse Width
Set-up, Hold, and Release Times
ENABLE SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL 3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V CONTROL INPUT tPZL OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH 6V tPZH SWITCH GND 3V 1.5V tPHZ 0.3V 1.5V 0V 0V VOH tPLZ DISABLE 3V 1.5V 0V 3V 0.3V VOL
Propagation Delay
Enable and Disable Times
NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns.
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IDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT XX FCT XX Family XXXX Device Type X Package Temp. Range
PV PVG PA PAG 245T
Shrink Small Outline Package SSOP - Green Thin Shrink Small Outline Package TSSOP - Green 16-Bit Bidirectional 3.3 Volt to 5 Volt Translator
164 74
Double-Density -40C to +85C
CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054
for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com
for Tech Support: logichelp@idt.com (408) 654-6459
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