1998 Jul 08

3

Philips Semiconductors

Product specification

Dual retriggerable monostable

multivibrator with reset

74HC/HCT423

ORDERING INFORMATION

PIN DESCRIPTION

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

74HC423N;

74HCT423N

DIP16

plastic dual in-line package; 16 leads (300 mil); long body

SOT38-1

74HC423D;

74HCT423D

SO16

plastic small outline package; 16 leads; body width 3.9 mm;

low stand-off height

SOT109-1

PIN NO.

SYMBOL

NAME AND FUNCTION

1, 9

1A, 2A

trigger inputs (negative-edge triggered)

2, 10

1B, 2B

trigger inputs (positive-edge triggered)

3, 11

direct reset action (active LOW)

4, 12

1Q, 2Q

outputs (active LOW)

external resistor/capacitor connection

8

GND

ground (0 V)

13, 5

1Q, 2Q

outputs (active HIGH)

14, 6

external capacitor connection

15

external resistor/capacitor connection

16

positive supply voltage

Fig.1 Pin configuration.

Fig.2

Fig.3 IEC logic symbol.