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M74HC157C1R PDF预览

M74HC157C1R

更新时间: 2024-11-04 22:34:43
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 复用器
页数 文件大小 规格书
11页 253K
描述
HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER

M74HC157C1R 数据手册

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M54HC157/158  
M74HC157/158  
HC157 QUAD 2 CHANNEL MULTIPLEXER  
HC158 QUAD 2 CHANNEL MULTIPLEXER (INV.)  
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HIGH SPEED  
tPD = 10 ns (TYP.) AT VCC = 5 V  
LOW POWER DISSIPATION  
ICC = 4 µA (MAX.) AT TA = 25 °C  
HIGH NOISE IMMUNITY  
VNIH = VNIL = 28 % VCC (MIN.)  
OUTPUT DRIVE CAPABILITY  
10 LSTTL LOADS  
SYMMETRICAL OUTPUT IMPEDANCE  
IOH = IOL = 4 mA (MIN.)  
BALANCED PROPAGATION DELAYS  
tPLH = tPHL  
WIDE OPERATING VOLTAGE RANGE  
B1R  
(Plastic Package)  
F1R  
(Ceramic Package)  
M1R  
(Micro Package)  
C1R  
(Chip Carrier)  
VCC (OPR) = 2 V TO 6 V  
PIN AND FUNCTION COMPATIBLE  
WITH 54/74LS157/158  
ORDER CODES :  
M54HCXXXF1R  
M74HCXXXB1R  
M74HCXXXM1R  
M74HCXXXC1R  
PIN CONNECTIONS (top view)  
HC157  
DESCRIPTION  
The M54/74HC157 and the M54/74HC158 are high  
speed CMOS QUAD 2-CHANNEL MULTI-  
PLEXER’s fabricated with silicon gate C2MOS tech-  
nology. They achieve the high speed operation  
similar to equivalent LSTTL while maintaining the  
CMOS low power dissipation.  
HC158  
These devices consist of four 2-input digital multi-  
plexers with common select and strobe inputs. The  
HC158 is an inverting multiplexer while the HC157  
is a non-inverting multiplexer. When the STROBE  
input is held High, selection of data is inhibited and  
all the outputs become Low in the M74HC157 and  
High in the M74HC158. The SELECT decoding  
determines whether the A or B inputs get routed to  
their corresponding Y outputs. All inputs are  
equipped with protection circuits against static dis-  
charge and transient excess voltage.  
NC =  
No Internal  
Connection  
February 1993  
1/11  

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