U74AHC157G-P16-T [UTC]
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS / MULTIPLEXERS;型号: | U74AHC157G-P16-T |
厂家: | Unisonic Technologies |
描述: | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS / MULTIPLEXERS 光电二极管 逻辑集成电路 |
文件: | 总6页 (文件大小:208K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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
Package
Packing
Halogen Free
U74AHC157L-P16-R
U74AHC157L-P16-T
U74AHC157G-P16-R
U74AHC157G-P16-T
TSSOP-16
TSSOP-16
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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U74AHC157
CMOS IC
PIN CONFIGURATION
FUNCTION TABLE
INPUTS
OUTPUTS
Y
G
A
B
A /B
H
L
L
L
L
X
L
L
H
H
X
L
H
X
X
X
X
X
L
L
L
H
L
H
H
LOGIC DIAGRAM
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U74AHC157
CMOS IC
ABSOLUTE MAXIMUM RATING (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
VCC
RATINGS
-0.5~7
UNIT
V
Supply Voltage Range
Input Voltage Range
Output Voltage Range
VIN
-0.5~7
V
VOUT
IIK
-0.5~VCC +0.5
-20
V
Input Clamp Current (VIN<0)
Output Clamp Current (VOUT<0, or VOUT>VCC
Output Current
mA
mA
mA
mA
°C
)
IOK
±20
IOUT
ICC
±25
VCC or GND Current
±50
Storage Temperature
TSTG
-65 ~ +150
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
CONDITIONS
MIN
2
TYP
MAX UNIT
5.5
V
VCC = 2V
VCC = 3V
1.5
2.1
3.85
High-Level Input Voltage
Low-Level Input Voltage
VIH
VIL
V
VCC = 5.5V
VCC = 2V
VCC = 3V
0.5
0.9
1.65
5.5
VCC
-50
-4
V
VCC = 5.5V
Input Voltage
VIN
0
0
V
V
Output Voltage
VOUT
VCC = 2V
VCC = 3.3±0.3V
CC = 5±0.5V
μA
High-level Output Current
Low-level Output Current
IOH
mA
μA
V
-8
VCC = 2V
50
IOL
VCC = 3.3±0.3V
4
mA
V
CC = 5±0.5V
VCC = 3.3±0.3V
CC = 5±0.5V
8
100
20
Input Transition Rise or Fall Rate
Operating Temperature
Δt/Δv
ns/V
°C
V
TA
-40
85
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
VOH
TEST CONDITIONS
IOH = -50 μA, VCC = 2V
MIN
1.9
TYP
2
MAX UNIT
IOH = -50 μA, VCC = 3V
IOH = -50 μA, VCC = 4.5V
IOH = -4 mA, VCC = 3V
2.9
3
High-Level Output Voltage
Low-Level Output Voltage
V
4.4
4.5
2.58
3.94
I
OH = -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
0.1
0.1
VOL
V
0.1
0.36
0.36
I
OH = 8 mA, VCC = 4.5V
Input Leakage Current
(A or B inputs)
II(LEAK) VIN = 5.5V or GND, VCC = 0 to 5.5V
±0.1
μA
Quiescent Supply Current
Input Capacitance
ICC
VIN = VCC or GND, IOUT = 0, VCC = 5.5V
VIN = VCC or GND, VCC=5V
4
μA
CIN
2
10
pF
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U74AHC157
CMOS IC
SWITCHING CHARACTERISTICS
VCC = 3.3V ± 0.3V, TA =25°C
PARAMETER
SYMBOL
tPLH
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 MAX UNIT
6.2 9.7
ns
8.7 13.2
Propagation delay from input A or B to output Y, tpd
Propagation delay from input A / B to output Y, tpd
Propagation delay from input G to output Y, tpd
6.2 9.7
ns
tPHL
tPLH
tPHL
tPLH
tPHL
8.7 13.2
8.4 13.2
Ns
10.9 16.7
8.4 13.2
Ns
10.9 16.7
8.7 13.6
Ns
11.2 17.1
8.7 13.6
Ns
11.2 17.1
VCC = 5V ± 0.5V, TA =25°C
PARAMETER
SYMBOL
tPLH
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 MAX UNIT
4.1 6.4
ns
5.6 8.4
Propagation delay from input A or B to output Y, tpd
Propagation delay from input A / B to output Y, tpd
Propagation delay from input G to output Y, tpd
4.1 6.4
ns
tPHL
tPLH
tPHL
tPLH
tPHL
5.6 8.4
5.3 8.1
ns
6.8 10.1
5.3 8.1
ns
6.8 10.1
5.6 8.6
ns
7.1 10.6
5.6 8.6
ns
7.1 10.6
OPERATING CHARACTERISTICS (TA =25°C)
PARAMETER
Power dissipation capacitance
SYMBOL
CPD
TEST CONDITIONS
RATINGS
11
UNIT
pF
VCC = 5V, f=1MHz, No load
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U74AHC157
CMOS IC
TEST CIRCUIT AND WAVEFORMS
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
Open
VLOAD
GND
Input
VCC
VM
VLOAD
VCC
CL
RL
VΔ
VIN
tR, tF
15pF
50pF
15pF
50pF
3.3V±0.3V
5V±0.5V
VCC
≤3ns
VCC/2
VCC/2
1kΩ
1kΩ
0.3V
0.5V
VCC
≤3ns
VCC
tW
VIN
Input
VM
VM
0
V
Pulse Duration
Timing Input
VM
tSU
tH
VIN
0V
VM
Data Input
VM
Setup and Hold Times
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U74AHC157
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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