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IDT74LVCH162373A 3.3V CMOS 16-BIT TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 16-BIT IDT74LVCH162373A TRANSPARENT D-TYPE LATCH WITH 3-STATE OUTPUTS, 5 VOLT TOLERANT I/O, BUS-HOLD
* Typical tSK(o) (Output Skew) < 250ps * ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) * VCC = 3.3V 0.3V, Normal Range * VCC = 2.7V to 3.6V, Extended Range * CMOS power levels (0.4 W typ. static) * All inputs, outputs, and I/O are 5V tolerant * Available in SSOP, TSSOP, and TVSOP packages
FEATURES:
DESCRIPTION:
DRIVE FEATURES: APPLICATIONS:
* Balanced Output Drivers: 12mA * Low switching noise
* 5V and 3.3V mixed voltage systems * Data communication and telecommunication systems
The LVCH162373A 16-bit transparent D-type latch is built using advanced dual metal CMOS technology. This high-speed, low-power latch is ideal for temporary storage of data. The LVCH162373A can be used for implementing memory address latches, I/O ports, and bus drivers. The output enable and latch enable controls are organized to operate each device as two 8-bit latches or one 16-bit latch. Flow-through organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin. All pins of the LVCH162373A can be driven from either 3.3V or 5V devices. This feature allows the use of this device as a translator in a mixed 3.3V/5V supply system. The LVCH162373A has series resistors in the device output structure which will significantly reduce line noise when used with light loads. The driver has been developed to drive 12mA at the designated threshold levels. The LVCH162373A has "bus-hold" which retains the inputs' last state whenever the input goes to a high impedance. This prevents floating inputs and eliminates the need for pull-up/down resistors.
FUNCTIONAL BLOCK DIAGRAM
1OE
1
2OE
24
1LE
48
2LE
25
1D1
47
D C
2
2D1
36
D C
13
1Q1
2Q1
TO SEVEN OTHER CHANNELS
TO SEVEN OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
(c) 1999 Integrated Device Technology, Inc.
JULY 1999
DSC-4888/1
IDT74LVCH162373A 3.3V CMOS 16-BIT TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
1LE 1D1 1D2
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Max VTERM Terminal Voltage with Respect to GND Storage Temperature DC Output Current Continuous Clamp Current, VI < 0 or VO < 0 Continuous Current through each VCC or GND -0.5 to +6.5 -65 to +150 -50 to +50 -50 100 TSTG IOUT IIK IOK ICC ISS
Unit V C mA mA mA
1OE 1Q1 1Q2
GND
1Q3 1Q4
GND
1D3 1D4
VCC
1Q5 1Q6
VCC
1D5 1D6
NOTE: 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.
GND
1Q7 1Q8 2Q1 2Q2
GND
1D7 1D8 2D1 2D2
CAPACITANCE (TA = +25C, F = 1.0MHz)
Symbol CIN COUT CI/O Parameter(1) Input Capacitance Output Capacitance I/O Port Capacitance Conditions VIN = 0V VOUT = 0V VIN = 0V Typ. 4.5 6.5 6.5 Max. 6 8 8 Unit pF pF pF
GND
2Q3 2Q4
GND
2D3 2D4
NOTE: 1. As applicable to the device type.
VCC
2Q5 2Q6
VCC
2D5 2D6
PIN DESCRIPTION
Pin Names xDx xLE xQx xOE Data Inputs(1) Latch Enable Inputs (Active HIGH) 3-State Outputs Output Enable Inputs (Active LOW) Description
GND
2Q7 2Q8 2OE
GND
2D7 2D8 2LE
NOTE: 1. These pins have "Bus-Hold". All other pins are standard inputs, outputs, or I/Os.
SSOP/ TSSOP/ TVSOP TOP VIEW
FUNCTION TABLE (EACH 8-BIT SECTION)(1)
Inputs xOE L L L H xLE H H L X xDx H L X X Outputs xQx H L Q(2) Z
NOTES: 1. H = HIGH Voltage Level X = Don't Care L = LOW Voltage Level Z = High-Impedance 2. Output level before the indicated steady-state input conditions were established.
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IDT74LVCH162373A 3.3V CMOS 16-BIT TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = -40C to +85C
Symbol VIH VIL IIH IIL IOZH IOZL IOFF VIK VH ICCL ICCH ICCZ ICC High Impedance Output Current (3-State Output pins) Input/Output Power Off Leakage Clamp Diode Voltage Input Hysteresis Quiescent Power Supply Current VCC = 0V, VIN or VO 5.5V VCC = 2.3V, IIN = -18mA VCC = 3.3V VCC = 3.6V VIN = GND or VCC -- -- -- -- -- -- -- -0.7 100 -- -- -- 50 -1.2 -- 10 10 500 A V mV A VCC = 3.6V VO = 0 to 5.5V -- -- 10 A Parameter Input HIGH Voltage Level Input LOW Voltage Level Input Leakage Current VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 3.6V VI = 0 to 5.5V Test Conditions Min. 1.7 2 -- -- -- Typ.(1) -- -- -- -- -- Max. -- -- 0.7 0.8 5 A V Unit V
Quiescent Power Supply Current Variation
3.6 VIN 5.5V(2) One input at VCC - 0.6V, other inputs at VCC or GND
A
NOTES: 1. Typical values are at VCC = 3.3V, +25C ambient. 2. This applies in the disabled state only.
BUS-HOLD CHARACTERISTICS
Symbol IBHH IBHL IBHH IBHL IBHHO IBHLO
NOTES: 1. Pins with Bus-Hold are identified in the pin description. 2. Typical values are at VCC = 3.3V, +25C ambient.
Parameter(1) Bus-Hold Input Sustain Current Bus-Hold Input Sustain Current Bus-Hold Input Overdrive Current VCC = 3V VCC = 2.3V VCC = 3.6V
Test Conditions VI = 2V VI = 0.8V VI = 1.7V VI = 0.7V VI = 0 to 3.6V
Min. - 75 75 -- -- --
Typ.(2) -- -- -- -- --
Max. -- -- -- -- 500
Unit A A A
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IDT74LVCH162373A 3.3V CMOS 16-BIT TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
OUTPUT DRIVE CHARACTERISTICS
Symbol VOH Parameter Output HIGH Voltage VCC = 2.3V VCC = 2.7V VCC = 3V VOL Output LOW Voltage VCC = 2.3V to 3.6V VCC = 2.3V VCC = 2.7V VCC = 3V Test Conditions(1) VCC = 2.3V to 3.6V IOH = - 0.1mA IOH = - 4mA IOH = - 6mA IOH = - 4mA IOH = - 8mA IOH = - 6mA IOH = - 12mA IOL = 0.1mA IOL = 4mA IOL = 6mA IOL = 4mA IOL = 8mA IOL = 6mA IOL = 12mA Min. VCC - 0.2 1.9 1.7 2.2 2 2.4 2 -- -- -- -- -- -- -- Max. -- -- -- -- -- -- -- 0.2 0.4 0.55 0.4 0.6 0.55 0.8 V Unit V
NOTE: 1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range. TA = - 40C to + 85C.
OPERATING CHARACTERISTICS, VCC = 3.3V 0.3V, TA = 25C
Symbol CPD CPD Parameter Power Dissipation Capacitance per Latch Outputs enabled Power Dissipation Capacitance per Latch Outputs disabled Test Conditions CL = 0pF, f = 10Mhz Typical Unit pF
-- --
SWITCHING CHARACTERISTICS(1)
VCC = 2.7V Symbol tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ tSU tH tW tSK(o) Parameter Propagation Delay xDx to xQx Propagation Delay xLE to xQx Output Enable Time xOE to xQx Output Disable Time xOE to xQx Set-up Time HIGH or LOW, xDx to xLE Hold Time HIGH or LOW, xDx after xLE xLE Pulse Width HIGH Output Skew(2) 2.3 1.6 3.3 -- -- -- 2.3 1.6 3.3 -- -- -- 500 ns ns ns ps -- 7.7 2.5 7.3 ns -- 7.1 1.3 6.1 ns -- 6.4 2.1 5.7 ns Min. -- Max. 6 VCC = 3.3V 0.3V Min. 1.6 Max. 5.3 Unit ns
--
--
--
NOTES: 1. See TEST CIRCUITS AND WAVEFORMS. TA = - 40C to + 85C. 2. Skew between any two outputs of the same package and switching in the same direction.
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IDT74LVCH162373A 3.3V CMOS 16-BIT TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS
Symbol VLOAD VIH VT VLZ VHZ CL VCC(1)= 3.3V0.3V VCC(1)= 2.7V 6 2.7 1.5 300 300 50
VCC 500 Pulse (1, 2) Generator VIN D.U.T. RT 500 CL
LVC Link
VCC(2)= 2.5V0.2V 2 x Vcc Vcc Vcc / 2 150 150 30
Unit V V V mV mV pF
VLOAD Open GND
6 2.7 1.5 300 300 50
SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL
VIH VT 0V VOH VT VOL VIH VT 0V
LVC Link
Propagation Delay
ENABLE CONTROL INPUT tPZL OUTPUT SWITCH NORMALLY CLOSED LOW tPZH OUTPUT SWITCH NORMALLY OPEN HIGH VLOAD/2 VT tPHZ VT 0V tPLZ DISABLE VIH VT 0V VLOAD/2 VOL+VLZ VOL VOH VOH-VHZ 0V
LVC Link
VOUT
Test Circuit for All Outputs
DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. NOTES: 1. Pulse Generator for All Pulses: Rate 10MHz; tF 2.5ns; tR 2.5ns. 2. Pulse Generator for All Pulses: Rate 10MHz; tF 2ns; tR 2ns.
NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
Enable and Disable Times
SWITCH POSITION
Test Open Drain Disable Low Enable Low Disable High Enable High All Other Tests Switch VLOAD GND Open
VIH VT 0V VOH VT VOL VOH VT VOL tPLH2 tPHL2
LVC Link
DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL SYNCHRONOUS CONTROL
tSU
tH
tREM
tSU
tH
VIH VT 0V VIH VT 0V VIH VT 0V VIH VT 0V
LVC Link
INPUT
Set-up, Hold, and Release Times
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE VT
LVC Link
tPLH1
tPHL1
OUTPUT 1
VT
tSK (x)
tSK (x)
OUTPUT 2
tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1
Pulse Width
Output Skew - tSK(X)
NOTES: 1. For tSK(o) OUTPUT1 and OUTPUT2 are any two outputs. 2. For tSK(b) OUTPUT1 and OUTPUT2 are in the same bank.
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IDT74LVCH162373A 3.3V CMOS 16-BIT TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
X LVC XX IDT Bus-Hold Temp. Range XX Family XX XXXX Device Type Package
PV PA PF
Shrink Small Outline Package Thin Shrink Small Outline Package Thin Very Small Outline Package
373A 16-Bit Transparent D-Type Latch with 5 Volt Tolerant I/O 162 H 74 Double-Density with Resistors, 12mA Bus-hold -40C to +85C
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