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IDT74LVC157A 3.3V CMOS QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR
EXTENDED COMMERCIAL TEMPERATURE RANGE
3.3V CMOS QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER, 5 VOLT TOLERANT I/O
FEATURES:
- - - - - - - - - - 0.5 MICRON CMOS Technology ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) 1.27mm pitch SOIC, 0.635mm pitch QSOP, 0.65mm pitch SSOP, 0.65mm pitch TSSOP packages Extended commercial range of - 40C to +85C VCC = 3.3V 0.3V, Normal Range VCC = 2.3V to 3.6V, Extended Range CMOS power levels (0.4 W typ. static) Rail-to-Rail output swing for increased noise margin All inputs, outputs and I/O are 5 Volt tolerant Supports hot insertion
IDT74LVC157A
DESCRIPTION:
This quadruple 2-line to 1-line data selector/multiplexer is built using advanced dual metal CMOS technology. The LVC157A features a common strobe (G) input. When the strobe is high, all outputs are low. When the strobe is low, a 4-bit word is selected from one of two sources and is routed to the four outputs. The device provides true data. Inputs 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 LVC157A has been designed with a 24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance.
Drive Features for LVC157A: - High Output Drivers: 24mA - Reduced system switching noise
APPLICATIONS:
* 5V and 3.3V mixed voltage systems * Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
1A
2
4
1B
3
1Y
2A
5
7
2B
6
2Y
11
3A
9
3B
10
3Y
4A
14
12
4B
13
4Y
G A/B
15 1
EXTENDED COMMERCIAL TEMPERATURE RANGE
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c 1999 Integrated Device Technology, Inc.
FEBRUARY 2000
DSC-4721/-
IDT74LVC157A 3.3V CMOS QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR
EXTENDED COMMERCIAL TEMPERATURE RANGE
PIN CONFIGURATION
A/B
1A 1B 1Y 2A 2B 2Y
ABSOLUTE MAXIMUM RATINGS (1)
Symbol VTERM Description 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
LVC QUAD Link
Max. - 0.5 to +6.5 - 65 to +150 - 50 to +50 - 50 100
Unit V C mA mA mA
1 2 3 4 5 6 7 8
16 15 14 SO16-7 13 SO16-8 SO16-9 12 SO16-10 11 10 9
VCC G
4A 4B 4Y 3A 3B 3Y
TSTG IOUT IIK IOK ICC ISS
G ND
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.
SOIC/ SSOP/ TSSOP/ QSOP TOP VIEW
CAPACITANCE (TA = +25C, f = 1.0MHZ)
Symbol CIN COUT CI/O Parameter(1) Input Capacitance Output Capacitance I/O Port Capacitance
LVC QUAD Link
Conditions VIN = 0V VOUT = 0V VIN = 0V
Typ. 4.5 5.5 6.5
Max. 6 8 8
Unit pF pF pF
NOTE: 1. As applicable to the device type.
PIN DESCRIPTION
Pin Names A/B G xY xA, xB Description Select Input (Active LOW) Common Strobe Input (Active LOW) Data Output Data Inputs
FUNCTION TABLE(1)
Inputs G H L L L L A/B X L L H H xA X L H X X xB X X X L H Outputs xY L L H L H
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care
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IDT74LVC157A 3.3V CMOS QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR
EXTENDED COMMERCIAL 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 Parameter Input HIGH Voltage Level Input LOW Voltage Level Input Leakage Current 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 A V mV A Test Conditions 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 VCC = 3.6V VI = 0 to 5.5V VO = 0 to 5.5V Min. 1.7 2 -- -- -- -- Typ.(1) -- -- -- -- -- -- Max. -- -- 0.7 0.8 5 10 A A V Unit V
Quiescent Power Supply Current Variation
One input at VCC - 0.6V other inputs at VCC or GND
--
--
500
A
LVC QUAD Link
NOTE: 1. Typical values are at VCC = 3.3V, +25C ambient.
OUTPUT DRIVE CHARACTERISTICS
Symbol VOH Parameter Output HIGH Voltage Test Conditions(1) VCC = 2.3V to 3.6V IOH = - 0.1mA VCC = 2.3V VCC = 2.3V VCC = 2.7V VCC = 3.0V VCC = 3.0V VOL Output LOW Voltage VCC = 2.3V to 3.6V VCC = 2.3V VCC = 2.7V VCC = 3.0V IOH = - 24mA IOL = 0.1mA IOL = 6mA IOL = 12mA IOL = 12mA IOL = 24mA IOH = - 6mA IOH = - 12mA Min. VCC - 0.2 2 1.7 2.2 2.4 2.2 -- -- -- -- -- Max. -- -- -- -- -- -- 0.2 0.4 0.7 0.4 0.55
LVC QUAD Link
Unit V
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.
c
1998 Integrated Device Technology, Inc.
3
DSC-123456
IDT74LVC157A 3.3V CMOS QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR
EXTENDED COMMERCIAL TEMPERATURE RANGE
OPERATING CHARACTERISTICS, VCC = 3.3V 0.3V, TA = 25C
Symbol CPD Parameter Power Dissipation Capacitance Test Conditions CL = 0pF, f = 10Mhz Typical 16 Unit pF
SWITCHING CHARACTERISTICS
Symbol tPLH tPHL tPLH tPHL tPLH tPHL tSK(o) Parameter Propagation Delay xA or xB to xY Propagation Delay A/B to xY Propagation Delay G to xY Output Skew(2) Min. -- -- -- --
(1) VCC = 2.7V Min. -- -- -- -- Max. 5.9 8.1 7.8 --
VCC = 3.3V0.3V
VCC = 2.5V0.2V
Max. -- -- -- --
Min. 1 1 1 --
Max. 5.2 6.8 6.5 1
Unit ns ns ns 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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IDT74LVC157A 3.3V CMOS QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR
EXTENDED COMMERCIAL TEMPERATURE RANGE
TEST CONDITIONS
Symbol VLOAD VIH VT VLZ VHZ CL VCC(1)= 2.5V 0.2V 2 x Vcc Vcc VCC / 2 150 150 30
TEST CIRCUITS AND WAVEFORMS PROPAGATION DELAY
VCC(2)= 3.3V 0.3V & 2.7V 6 2.7 1.5 300 300 50 Unit V V V mV mV pF
LVC QUAD Link
SA M E PH AS E IN PU T TR AN S ITIO N tPLH O U TPU T tPLH O PPO SITE P H AS E IN PU T TR AN S ITIO N tPHL tPHL
VIH VT 0V VOH VT VOL VIH VT 0V
LV C Q U A D L in k
TEST CIRCUITS FOR ALL OUTPUTS
VCC 500 Pulse G enerator
(1, 2)
V LOAD O pen GND
ENABLE AND DISABLE TIMES
EN ABLE C O N TR O L IN PU T tPZL tPLZ VLOAD/2 VT tPHZ VT 0V D ISAB LE VIH VT 0V VLOAD/2 VLZ VOL V OH V HZ 0V
LV C Q U A D L in k
VIN D.U.T.
VOUT
RT
500 CL
L V C Q U A D L in k
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 2ns; tR 2ns. 2. Pulse Generator for All Pulses: Rate 10MHz; tF 2.5ns; tR 2.5ns.
O U TPU T SW ITCH N O R M ALLY CLO SED LO W tPZH O U TPU T SW ITCH N O R M ALLY OP EN H IGH
NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
SWITCH POSITION
Test Open Drain Disable Low Enable Low Disable High Enable High All Other tests Switch VLOAD
SET-UP, HOLD, AND RELEASE TIMES
D A TA IN PU T TIM IN G IN PU T tSU tH V IH VT 0V V IH VT 0V V IH VT 0V V IH VT 0V
L V C Q U A D L in k
GND Open
LVC QUAD Link
SY N C H RO N O U S C O N TR O L
tREM
OUTPUT SKEW - tsk (x)
IN PU T tPLH1 tPHL1
VIH VT 0V VOH
AS YN C H RO N O U S C O N TR O L
tSU
tH
PULSE WIDTH
LO W -H IG H -LO W PU LSE tW H IGH -LO W -H IG H PU LSE VT
LV C Q U A D L in k
O U TP U T 1
tSK (x)
tSK (x)
VT V OL V OH
VT
O U TP U T 2 tPLH2 tPHL2
VT VOL
tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1
LV C Q U A D L in k 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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IDT74LVC157A 3.3V CMOS QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR
EXTENDED COMMERCIAL TEMPERATURE RANGE
ORDERING INFORMATION
ID T XX LV C XXXX D evice Type XX Package Tem p. R ange
Q DC PY PG 157A 74
Quarter Size O utline Package (SO16-7) Sm all O utline Package (SO 16-8) Shrink Sm all Outline Package (S O16-9) Thin S hrink Sm all Outline Package (S O16-10) Quadruple 2-Line to 1-Line Data Selector/M ultiplexer, 24m A
-40C to +85C
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*To search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2. The IDT logo is a registered trademark of Integrated Device Technology, Inc.
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