74AHC123AD View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

74AHC123AD

Dual retriggerable monostable multivibrator with reset

Philips Electronics 

Philips Semiconductors

Dual retriggerable monostable multivibrator

with reset

Product specification

74AHC123A;

74AHCT123A

PINNING

PIN

1, 9

2, 10

3, 11

4, 12

5, 13

6, 14

7, 15

8

16

SYMBOL

1A, 2A

1B, 2B

1RD, 2RD

1Q, 2Q

2Q, 1Q

2CEXT, 1CEXT

2REXT/CEXT, 1REXT/CEXT

GND

VCC

DESCRIPTION

trigger inputs (negative-edge triggered)

trigger inputs (positive-edge triggered)

direct reset LOW and trigger action at positive edge

outputs (active LOW)

outputs (active HIGH)

external capacitor connection

external resistor/capacitor connection

ground (0 V)

DC supply voltage

handbook, halfpage

1A 1

1B 2

1RD 3

1Q 4

2Q 5

2CEXT 6

2REXT/CEXT 7

GND 8

16 VCC

15 1REXT/CEXT

14 1CEXT

13 1Q

123

12 2Q

11 2RD

10 2B

9 2A

MNA514

handbook, halfpage

1 1A

9 2A

2 1B

10 2B

3 1RD

11 2RD

1CEXT 14

2CEXT 6

1REXT/CEXT 15

2REXT/CEXT 7

S

Q

T

Q

RD

1Q 13

2Q 5

1Q 4

2Q 12

MNA515

Fig.1 Pin configuration.

Fig.2 Logic diagram.

2000 Mar 15

5

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