74HCT7540D 查看數據表（PDF） - Philips Electronics

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74HCT7540D

Octal Schmitt trigger buffer/line driver; 3-state; inverting

Philips Electronics 

Philips Semiconductors

Octal Schmitt trigger buffer/line driver;

3-state; inverting

Product specification

74HC/HCT7540

PIN DESCRIPTION

PIN NO.

1, 19

2, 3, 4, 5, 6, 7, 8, 9

10

18, 17, 16, 15, 14, 13, 12, 11

20

SYMBOL

OE1, OE2

A0 to A7

GND

Y0 to Y7

VCC

NAME AND FUNCTION

output enable inputs (active LOW)

data inputs

ground (0 V)

bus outputs

positive supply voltage

Fig.1 Pin configuration.

Fig.2 Logic symbol.

Fig.3 IEC logic symbol.

December 1990

3

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