74HC251D 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

比赛名单

74HC251D

8-input multiplexer; 3-state

Philips Electronics 

Philips Semiconductors

8-input multiplexer; 3-state

PIN DESCRIPTION

PIN NO.

4, 3, 2, 1, 15, 14, 13, 12

5

6

7

8

11, 10, 9

16

SYMBOL

I0 to I7

Y

Y

OE

GND

S0, S1, S2

VCC

Product specification

74HC/HCT251

NAME AND FUNCTION

multiplexer inputs

multiplexer output

complementary multiplexer output

3-state output enable input (active LOW)

ground (0 V)

select inputs

positive supply voltage

Fig.1 Pin configuration.

Fig.2 Logic symbol.

Fig.3 IEC logic symbol.

December 1990

3

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