Product Summary

The 74HC123 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard no. 7A. The 74HC123 is a dual retriggerable monostable multivibrator with output pulse width control by three methods.

Parametrics

74HC123 absolute maximum ratings: (1)VCC, supply voltage: -0.5 to +7 V; (2)IIK, input clamping current, VI < -0.5 V or VI > VCC + 0.5 V: ±20mA max; (3)IOK, output clamping current, VO < -0.5 V or VO > VCC + 0.5 V: ±20mA max; (4)IO, output current, except for pins nREXT/CEXT; VO = -0.5 V to (VCC + 0.5 V): ±25mA max; (5)ICC, supply current: 50mA max; (6)IGND, ground current: -50mA max; (7)Tstg, storage temperature: -65 to +150 ℃; (8)Ptot total power dissipation: DIP16 package: 750mW max; SO16 package: 500mW max; SSOP16 package: 500mW max; TSSOP16 package: 500mW max; DHVQFN16 package: 500mW max.

Features

74HC123 features: (1)DC triggered from active HIGH or active LOW inputs; (2) Retriggerable for very long pulses up to 100 % duty factor; (3)Direct reset terminates output pulse; (4)Schmitt-trigger action on all inputs except for the reset input; (5)ESD protection: HBM JESD22-A114E exceeds 2000 V; MM JESD22-A115-A exceeds 200 V; (6)Specified from -40 ℃ to +85 ℃ and from -40 ℃ to +125 ℃.

Diagrams

74HC123 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
74HC123BQ,115
74HC123BQ,115

NXP Semiconductors

Monostable Multivibrator 5V RETRIG 1STABLE

Data Sheet

0-1: $0.32
1-25: $0.29
25-100: $0.25
100-250: $0.22
74HC123BQ-G
74HC123BQ-G

NXP Semiconductors

Monostable Multivibrator 5V RETRIG 1STABLE MVIB RESET

Data Sheet

Negotiable 
74HC123D,652
74HC123D,652

NXP Semiconductors

Monostable Multivibrator DUAL MONO RETRIG

Data Sheet

0-1: $0.20
1-25: $0.17
25-100: $0.15
100-250: $0.12
74HC123D,653
74HC123D,653

NXP Semiconductors

Monostable Multivibrator DUAL RETRIG MONOSTABLE MULTI

Data Sheet

0-1: $0.08
1-25: $0.07
25-100: $0.07
100-250: $0.07
74HC123DB
74HC123DB

NXP Semiconductors

Monostable Multivibrator DUAL MONO MULTIVIB RETRIG/RESET

Data Sheet

Negotiable 
74HC123DB,112
74HC123DB,112

NXP Semiconductors

Monostable Multivibrator DUAL MONO MULTIVIB

Data Sheet

0-1: $0.23
1-25: $0.21
25-100: $0.20
100-250: $0.19
74HC123DB,118
74HC123DB,118

NXP Semiconductors

Monostable Multivibrator DUAL RETRIG MONOSTABLE MULTI

Data Sheet

0-1: $0.23
1-25: $0.22
25-100: $0.21
100-250: $0.20
74HC123N,652
74HC123N,652

NXP Semiconductors

Monostable Multivibrator DUAL MONO RETRIG

Data Sheet

0-1: $0.13
1-25: $0.12
25-100: $0.12
100-250: $0.11