Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74AHC157
CMOS IC
QUADRUPLE 2-LINE TO 1-LINE
DATA SELECTORS /
MULTIPLEXERS
„
DESCRIPTION
The U74AHC157 is a quadruple 2-line to 1-line data
selector/multiplexer. 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
* Wide supply voltage range from 2V to 5.5V
* Max tPD of 4.1ns from A or B to Y at 5V, CL=15pF
* Low power consumption, ICC = 4 μA (MAX) at 5.5V
* ±8 mA output driver at 5V
„
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74AHC157L-P16-R
U74AHC157G-P16-R
U74AHC157L-P16-T
U74AHC157G-P16-T
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Copyright © 2011 Unisonic Technologies Co., Ltd
Package
Packing
TSSOP-16
TSSOP-16
Tape Reel
Tube
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U74AHC157
CMOS IC
„
PIN CONFIGURATION
„
FUNCTION TABLE
INPUTS
G
H
L
L
L
L
„
A/B
X
L
L
H
H
A
B
OUTPUTS
Y
X
L
H
X
X
X
X
X
L
H
L
L
H
L
H
LOGIC DIAGRAM
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U74AHC157
„
CMOS IC
ABSOLUTE MAXIMUM RATING (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage Range
VCC
-0.5~7
V
Input Voltage Range
VIN
-0.5~7
V
Output Voltage Range
VOUT
-0.5~VCC +0.5
V
Input Clamp Current (VIN<0)
IIK
-20
mA
Output Clamp Current (VOUT<0, or VOUT>VCC)
IOK
±20
mA
Output Current
IOUT
±25
mA
VCC or GND Current
ICC
±50
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.
Note: 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 COMDITIONS
PARAMETER
Supply Voltage
SYMBOL
VCC
High-Level Input Voltage
VIH
Low-Level Input Voltage
VIL
Input Voltage
Output Voltage
IOH
Low-level Output Current
IOL
Operating Temperature
„
VCC = 2V
VCC = 3V
VCC = 5.5V
VCC = 2V
VCC = 3V
VCC = 5.5V
MIN
2
1.5
2.1
3.85
VIN
VOUT
High-level Output Current
Input Transition Rise or Fall Rate
CONDITIONS
Δt/Δv
TYP
UNIT
V
V
0.5
0.9
1.65
5.5
VCC
-50
-4
-8
50
4
8
100
20
85
0
0
VCC = 2V
VCC = 3.3±0.3V
VCC = 5±0.5V
VCC = 2V
VCC = 3.3±0.3V
VCC = 5±0.5V
VCC = 3.3±0.3V
VCC = 5±0.5V
TA
MAX
5.5
-40
V
V
V
μA
mA
μA
mA
ns/V
°C
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
High-Level Output Voltage
Low-Level Output Voltage
Input Leakage Current
(A or B inputs)
Quiescent Supply Current
Input Capacitance
SYMBOL
VOH
VOL
II(LEAK)
ICC
CIN
TEST CONDITIONS
IOH = -50 μA, VCC = 2V
IOH = -50 μA, VCC = 3V
IOH = -50 μA, VCC = 4.5V
IOH = -4 mA, VCC = 3V
IOH = -8 mA, VCC = 4.5V
IOH = 50 μA, VCC = 2V
IOH = 50 μA, VCC = 3V
IOH = 50 μA, VCC = 4.5V
IOH = 4 mA, VCC = 3V
IOH = 8 mA, VCC = 4.5V
TYP
2
3
4.5
VIN = 5.5V or GND, VCC = 0 to 5.5V
VIN = VCC or GND, IOUT = 0, VCC = 5.5V
VIN = VCC or GND, VCC=5V
UNISONIC TECHNOLOGIES CO., LTD
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MIN
1.9
2.9
4.4
2.58
3.94
2
MAX
UNIT
V
0.1
0.1
0.1
0.36
0.36
V
±0.1
μA
4
10
μA
pF
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CMOS IC
SWITCHING CHARACTERISTICS
VCC = 3.3V ± 0.3V, TA =25°C
PARAMETER
SYMBOL
tPLH
Propagation delay from input A or B to output Y, tpd
tPHL
tPLH
Propagation delay from input A / B to output Y, tpd
tPHL
tPLH
Propagation delay from input G to output Y, tpd
tPHL
VCC = 5V ± 0.5V, TA =25°C
PARAMETER
SYMBOL
tPLH
Propagation delay from input A or B to output Y, tpd
tPHL
tPLH
Propagation delay from input A / B to output Y, tpd
tPHL
tPLH
Propagation delay from input G to output Y, tpd
tPHL
„
TEST CONDITIONS
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
MIN TYP
6.2
8.7
6.2
8.7
8.4
10.9
8.4
10.9
8.7
11.2
8.7
11.2
MAX UNIT
9.7
ns
13.2
9.7
ns
13.2
13.2
Ns
16.7
13.2
Ns
16.7
13.6
Ns
17.1
13.6
Ns
17.1
TEST CONDITIONS
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
CL=15pF, RL=1kΩ
CL=50pF, RL=1kΩ
MIN TYP
4.1
5.6
4.1
5.6
5.3
6.8
5.3
6.8
5.6
7.1
5.6
7.1
MAX UNIT
6.4
ns
8.4
6.4
ns
8.4
8.1
ns
10.1
8.1
ns
10.1
8.6
ns
10.6
8.6
ns
10.6
OPERATING CHARACTERISTICS (TA =25°C)
PARAMETER
Power dissipation capacitance
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SYMBOL
CPD
TEST CONDITIONS
VCC = 5V, f=1MHz, No load
RATINGS
11
UNIT
pF
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CMOS IC
TEST CIRCUIT AND WAVEFORMS
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
Open
VLOAD
GND
VM
VLOAD
Input
VCC
VIN
tR, tF
3.3V±0.3V
VCC
≤3ns
VCC/2
VCC
5V±0.5V
VCC
≤3ns
VCC/2
VCC
CL
15pF
50pF
15pF
50pF
RL
VΔ
1kΩ
0.3V
1kΩ
0.5V
tW
VIN
Input
VM
VM
0
V
Pulse Duration
Timing Input
VM
tSU
tH
VIN
Data Input
VM
VM
0V
Setup and Hold Times
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CMOS IC
TEST CIRCUIT AND WAVEFORMS(Cont.)
Notes: 1. CL includes probe and jig capacitance.
2. All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, ZO = 50Ω.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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