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UNISONIC TECHNOLOGIES CO., LTD U74HC157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS / MULTIPLEXERS
DESCRIPTION SOP-16
CMOS IC
The U74HC157 is a quadruple 2-line to 1-line data selectors/multiplexers. When G is high all outputs are low. When
G 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.
FEATURES TSSOP-16
* Wide supply voltage range from 2V to 6V * Typical tPD at 11ns from A or B to Y at 6V, CL=50pF * Low power consumption, ICC = 8 μA (MAX) at 6V * ±6 mA output driver at 5V * Low Input Current of 0.1uA Max
ORDERING INFORMATION
Ordering Number Lead Free Halogen Free U74HC157L-S16-R U74HC157G-S16-R U74HC157L-S16-T U74HC157G-S16-T U74HC157L-P16-R U74HC157G-P16-R U74HC157L-P16-T U74HC157G-P16-T Package SOP-16 SOP-16 TSSOP-16 TSSOP-16 Packing Tape Reel Tube Tape Reel Tube
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www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd
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U74HC157
PIN CONFIGURATION
CMOS IC
FUNCTION TABLE
INPUTS
G
OUTPUTS A X L H X X B X X X L H
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H L L L L
A/B X L L H H
Y L L H L H
LOGIC DIAGRAM
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U74HC157
ABSOLUTE MAXIMUM RATING (TA =25°C , unless otherwise specified)
CMOS IC
PARAMETER SYMBOL RATINGS UNIT Supply Voltage Range VCC -0.5~7 V Input Clamp Current (VIN<0) IIK ±20 mA Output Clamp Current (VOUT<0, or VOUT>VCC) IOK ±20 mA Output Current IOUT ±35 mA VCC or GND Current ICC ±70 mA Storage Temperature TSTG -65 ~ +150 °C Note: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATING CONDITIONS
SYMBOL VCC VIH VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V CONDITIONS MIN 2 1.5 3.15 4.2 TYP MAX UNIT 5 6 V V 0.5 V 1.35 1.8 VCC V VCC V 1000 500 ns/V 400 85 °C
PARAMETER Supply Voltage High-Level Input Voltage
Low-Level Input Voltage Input Voltage Output Voltage Input Transition Rise or Fall Rate Operating Temperature
VIL VIN VOUT
Δt/Δv
0 0 VCC=2V VCC=4.5V VCC=6V
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TA
-40
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS IOH=-20 μA, VCC=2V IOH=-20 μA, VCC=4.5V IOH=-20 μA, VCC=6V IOH=-6 mA, VCC=4.5V IOH=-7.8 mA, VCC=6V IOH=20 μA, VCC=2V IOH=20 μA, VCC=4.5V IOH=20 μA, VCC=6V IOH=6 mA, VCC=4.5V IOH=7.8 mA, VCC=6V VIN=VCC or GND, VCC=6V VIN=VCC or GND, IOUT=0, VCC=6V VCC=6V MIN 1.9 4.4 5.9 3.98 5.48 TYP 1.998 4.499 5.999 4.3 5.8 0.002 0.001 0.001 0.17 0.15 ±0.1 3 MAX UNIT
High-Level Output Voltage
VOH
V
Low-Level Output Voltage
VOL
Input Leakage Current Quiescent Supply Current Input Capacitance
II(LEAK) ICC CIN
0.1 0.1 0.1 0.26 0.26 ±100 8 10
V
nA μA pF
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U74HC157
SWITCHING CHARACTERISTICS
See Fig. 1 and Fig. 2 for test circuit and waveforms. PARAMETER SYMBOL TEST CONDITIONS VCC=2V, CL=50pF VCC=2V, CL=150pF VCC=4.5V, CL=50pF Propagation delay from input A or B tpd to output Y, tpd VCC=4.5V, CL=150pF VCC=6V, CL=50pF VCC=6V, CL=150pF VCC=2V, CL=50pF VCC=2V, CL=150pF VCC=4.5V, CL=50pF Propagation delay from input A / B tpd VCC=4.5V, CL=150pF to output Y, tpd VCC=6V, CL=50pF VCC=6V, CL=150pF VCC=2V, CL=50pF VCC=2V, CL=150pF VCC=4.5V, CL=50pF Propagation delay from input G to tpd VCC=4.5V, CL=150pF output Y, tpd VCC=6V, CL=50pF VCC=6V, CL=150pF VCC=2V, CL=50pF VCC=2V, CL=150pF VCC=4.5V, CL=50pF Output Transition Time tT VCC=4.5V, CL=150pF VCC=6V, CL=50pF VCC=6V, CL=150pF Note: tPLH and tPHL is the same as tPd
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CMOS IC
MIN TYP MAX UNIT 63 125 81 190 13 25 ns 23 38 11 21 18 33 67 125 81 210 18 25 ns 23 42 14 21 18 36 59 115 91 190 16 23 ns 24 38 13 20 18 33 28 60 45 210 8 12 ns 17 42 6 10 13 36
OPERATING CHARACTERISTICS (TA =25°C , unless otherwise specified)
SYMBOL CPD No load TEST CONDITIONS MIN TYP MAX UNIT 40 pF
PARAMETER Power dissipation capacitance
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U74HC157
TEST CIRCUIT AND WAVEFORMS
CMOS IC
Fig. 1 Load circuitry for switching times.
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Fig. 2 Propagation delay from input to output and Output transition time. Notes: 1. CL includes probe and jig capacitance. 2. All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, ZO=50Ω, tR=6ns, tF=6ns.
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U74HC157
CMOS IC
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