74HC123 Datasheet, PDF (3/17 Pages) NXP Semiconductors – Dual retriggerable monostable multivibrator with reset

Philips Semiconductors
Dual retriggerable monostable
multivibrator with reset
Product specification
74HC/HCT123
ORDERING INFORMATION
TYPE
NUMBER
74HC123N;
74HCT123N
74HC123D;
74HCT123D
74HC123DB;
74HCT123DB
74HC123PW;
74HCT123PW
NAME
DIP16
PACKAGE
DESCRIPTION
plastic dual in-line package; 16 leads (300 mil); long body
SO16 plastic small outline package; 16 leads; body width 3.9 mm
SSOP16 plastic shrink small outline package; 16 leads; body width 5.3 mm
TSSOP16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm
VERSION
SOT38-1
SOT109-1
SOT338-1
SOT403-1
PIN DESCRIPTION
PIN NO.
1, 9
2, 10
3, 11
4, 12
7
8
13, 5
14, 6
15
16
SYMBOL
1A, 2A
1B, 2B
1R_D, 2R_D
1Q, 2Q
2R_EXT/C_EXT
GND
1Q, 2Q
1C_EXT, 2C_EXT
1R_EXT/C_EXT
V_CC
NAME AND FUNCTION
trigger inputs (negative-edge triggered)
trigger inputs (positive-edge triggered)
direct reset LOW and trigger action at positive edge
outputs (active LOW)
external resistor/capacitor connection
ground (0 V)
outputs (active HIGH)
external capacitor connection
external resistor/capacitor connection
positive supply voltage
Fig.1 Pin configuration.
1998 Jul 08
Fig.2 Logic symbol.
3
Fig.3 IEC logic symbol.