Document
UNISONIC TECHNOLOGIES CO., LTD U74LVC157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
DESCRIPTION
The U74LVC157 is designed for 1.65V to 3.6V VCC operation. The device features a common strobe ( G ) input. 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.
FEATURES
* Operate From 1.65V to 3.6V * Inputs Accept Voltages to 5.5V * Max tpd of 5.0ns at 3.3V * Typical VOLP (Output Ground Bounce)<0.8V at VCC=3.3V, TA=25°C * Typical VOHV (Output VOH Undershoot)>2V at VCC=3.3V, TA=25°C
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74LVC157L-S16-R
U74LVC157G-S16-R
U74LVC157L-P16-R
U74LVC157G-P16-R
Package
SOP-16 TSSOP-16
CMOS IC
SOP-16
TSSOP-16
Packing Tape Reel Tape Reel
MARKING
www.unisonic.com.tw Copyright © 2017 Unisonic Technologies Co., Ltd
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U74LVC157
PIN CONFIGURATION
CMOS IC
FUNCTION TABLE
INPUTS
G A/B A
B
HXX
X
LLL
X
L LH
X
LHX
L
LHX
H
Note: H: HIGH voltage level; L: LOW voltage level; X: Don’t care.
OUTPUT Y
L L H L H
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U74LVC157
LOGIC DIAGRAM (positive logic)
CMOS IC
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QW-R502-990.D
U74LVC157
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
CONDITIONS
RATINGS
UNIT
Supply Voltage
VCC
-0.5 ~ +6.5
V
Input Voltage Output Voltage
VIN VOUT
Output in the high or low state Output in the power-off state
-0.5 ~ +6.5 -0.5 ~ VCC +0.5
-0.5 ~ +6.5
V V V
Continuous VCC or GND Current
ICC
±100
mA
Continuous Output Current Input Clamp Current
IOUT IIK
VOUT=0V ~ VCC VIN<0V
±50 mA -50 mA
Output Clamp Current Storage Temperature Range
IOK TSTG
VOUT>VCC or VOUT<0V
-50 -65 ~ +150
mA °C
Note: 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 (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX
Supply Voltage
VCC Operating
1.65 3.6
Input Voltage
VIN
0 5.5
Output Voltage
VOUT
0 VCC
High-level input voltage
VCC=1.65V~1.95V VIH VCC=2.3V~2.7V
0.65×VCC
1.7
VCC=2.7V~3.6V
2
Low-level input voltage
VCC=1.65V~1.95V VIL VCC=2.3V~2.7V
0.35×VCC
0.7
VCC=2.7V~3.6V
0.8
Input Transition Rise or Fall Rate
∆t/∆v
10
Operating Temperature
TA
-40 85
Note: All unused inputs of the device must be held at VCC or GND to ensure proper device operation.
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
UNIT V V V
V
V
ns/V °C
PARAMETER High-Level Output Voltage
Low-Level Output Voltage
SYMBOL VOH
VOL
TEST CONDITIONS VCC=1.65~3.6V, IOH=-100μA VCC=1.65V, IOH=-4mA VCC=2.3V, IOH=-8mA VCC=2.7V, IOH=-12mA VCC=3.0V, IOH=-12mA VCC=3V, IOH=-24mA VCC=1.6 ~3.6V, IOL=100μA VCC=1.65V, IOL=4mA VCC=2.3V, IOL=8mA VCC=2.7V, IOL=12mA VCC=3V, IOL=24mA
MIN VCC-0.2
1.29 1.9 2.2 2.4 2.3
TYP
MAX UNIT
V
0.1 0.24 0.30 V 0.40 0.55
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CMOS IC
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER Input Leakage Current Power OFF Leakage Current
Quiescent Supply Current
Additional Quiescent Supply Current Per Input Pin
Input Capacitance
SYMBOL II(LEAK) IOFF ICC
∆ICC
CI
TEST CONDITIONS
VCC=3.6V, VIN=5.5V or GND VCC=0V, VIN or VOUT=5.5V VIN=VCC or GND, IOUT=0 VCC=3.6V VCC=2.7V~3.6V, One input at VCC-0.6V, Other inputs at VCC or GND
VCC=3.3V, VIN=VCC or GND
MIN
TYP 5
MAX ±1 ±10 1
500
SWITCHING CHARACTERISTICS (TA =25°C , unless otherwise specified)(see Figure 1)
PARAMETER Propagation delay from input (A or B) to output(Y)
Propagation delay from input ( A / B ) to output(Y)
Propagation delay from input ( G ) to output(Y)
SYMBOL tPLH/tPHL tPLH/tPHL tPLH/tPHL
TEST CONDITIONS VCC=1.8V±0.15V, CL=30pF VCC=2.5V±0.2V, CL=30pF VCC=2.7V, CL=50pF VCC=3.3V±0.3V, CL=50pF VCC=1.8V±0.15V, CL=30pF VCC=2.5V±0.2V, CL=30pF VCC=2.7V, CL=50pF VCC=3.3V±0.3V, CL=50pF VCC=1.8V±0.15V, CL=30pF VCC=2.5V±0.2V, CL=30pF VCC=2.7V, CL=50pF VCC=3.3V±0.3V, CL=50pF
MIN TYP MAX 1 5.5 13.5 1 3.2 7.4 1 3.6 5.7 135 1 6 15.5 1 3.7 9.6 1 4.1 7.9 1 3.4 6.6 1 5.9 13.5 1 3.5 9.3 1 3.9 7.6 1 3.3 6.3
OPERATING CHARACTERISTICS (f=10MHz, TA =25°C , unless otherwise specified)
PARAMETER
Power Dissipation Capacitance
SYMBOL CPD
TEST CONDITIONS VCC=1.8V VCC=2.5V VCC=3.3V
MIN TYP MAX 14 15 16
UNIT μA μA
μA
μA
pF
UNIT ns ns ns ns ns ns ns ns ns ns ns ns
UNIT pF pF pF
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U74LVC157
TEST CIRCUIT AND WAVEFORMS
CMOS IC
VCC
1.8V±0.15V 2.5V±0.2V
2.7V 3.3V±0.3V
INPUTS
VIN tR/tF
VCC ≤2ns
VCC ≤2ns
2.7V
≤2.5ns
2.7V
≤2.5ns
VM
VCC/2 VCC/2 1.5V 1.5V
VLOAD
2×VCC 2×VCC
6V 6V
CL
30pF 30pF 50pF 50.