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M74HC237M1R PDF预览

M74HC237M1R

更新时间: 2024-11-17 22:57:55
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS /
页数 文件大小 规格书
11页 259K
描述
3 TO 8 LINE DECODER LATCH

M74HC237M1R 数据手册

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M54HC237  
M74HC237  
3 TO 8 LINE DECODER LATCH  
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HIGH SPEED  
tPD = 12 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 54/74LS237  
ORDER CODES :  
M54HC237F1R  
M74HC237B1R  
M74HC237M1R  
M74HC237C1R  
PIN CONNECTIONS (top view)  
DESCRIPTION  
The M54/74HC237 is a high speed CMOS 3 TO 8  
LINE DECODER LATCH fabricated in silicon gate  
C2MOS technology.  
It has the same high speed performance of LSTTL  
combined with true CMOS low power consumption.  
When GL goes from low to high, the address present  
at the select inputs (A, B, C) is stored in the latches.  
As long as GL remains high no address changes will  
be recognized. Output enable controls, G1 and G2  
control the state of the outputs independantly of the  
select or latch-enable inputs. All of the outputs are low  
unless G1 is high and G2 is low. The ’HC237 is ideally  
suited for the implementation of glitch-free decoders  
in stored-address applications in bus oriented sys-  
tems. All inputs are equipped with protection circuits  
against static discharge and transient excess voltage.  
NC =  
No Internal  
Connection  
October 1992  
1/11  

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