Philips Semiconductors
Product specification
Dual retriggerable monostable
multivibrator with reset
ORDERING INFORMATION
TYPE
NUMBER
74HC123N;
74HCT123N
74HC123D;
74HCT123D
74HC123DB;
74HCT123DB
74HC123PW;
74HCT123PW
PACKAGE
NAME
DIP16
SO16
SSOP16
TSSOP16
DESCRIPTION
plastic dual in-line package; 16 leads (300 mil); long body
plastic small outline package; 16 leads; body width 3.9 mm
74HC/HCT123
VERSION
SOT38-1
SOT109-1
SOT338-1
SOT403-1
plastic shrink small outline package; 16 leads; body width 5.3 mm
plastic thin shrink small outline package; 16 leads; body width 4.4 mm
PIN DESCRIPTION
PIN NO.
1, 9
2, 10
3, 11
4, 12
7
8
13, 5
14, 6
15
16
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
SYMBOL
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.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
1998 Jul 08
3
PHILIPS [ NXP SEMICONDUCTORS ]
