Datasheet > 74HCT123D

74HCT123D

更新时间： 2024-11-06 11:10:47

品牌	Logo	应用领域
安世 - NEXPERIA		/
页数	文件大小	规格书
20页	317K
描述
Dual retriggerable monostable multivibrator with resetProduction

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74HCT123D 数据手册

74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

Rev. 12 — 11 August 2021

Product data sheet

1. General description

The 74HC123; 74HCT123 is a dual retriggerable monostable multivibrator with reset. The basic

output pulse width is programmed by selection of external components (R_EXTand C_EXT). Once

triggered this basic pulse width may be extended by retriggering either of the edge triggered

inputs (nA or nB). By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW)

can be made as long as desired. Alternatively, an output delay can be terminated at any time by

a LOW-going edge on input nRD. Inputs include clamp diodes. This enables the use of current

limiting resistors to interface inputs to voltages in excess of V_CC

Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower input rise

and fall times.

2. Features and benefits

•

Wide supply voltage range from 2.0 V to 6.0 V

•

CMOS low power dissipation

High noise immunity

Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

Complies with JEDEC standards:

•

JESD8C (2.7 V to 3.6 V)

JESD7A (2.0 V to 6.0 V)

•

Input levels:

•

For 74HC123: CMOS level

For 74HCT123: TTL level

•

DC triggered from active HIGH or active LOW inputs

Retriggerable for very long pulses up to 100 % duty factor

Direct reset terminates output pulse

Schmitt-trigger action on all inputs except for the reset input

ESD protection:

•

HBM JESD22-A114F exceeds 2000 V

MM JESD22-A115-A exceeds 200 V

•

Multiple package options

Specified from -40 °C to +85 °C and from -40 °C to +125 °C

12 3 4 5 6 7...20

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74HCT123D 替代型号

型号	品牌	替代类型	描述	数据表
74HCT123D-T	NXP	功能相似	IC HCT SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16, 3.90 MM, PLASTIC, MS-012, SOT-109-1,

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74HCT123DB	NXP	获取价格	Dual retriggerable monostable multivibrator with reset
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74HCT123D-T	NXP	获取价格	IC HCT SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16, 3.90 MM, PLASTIC, MS-012, SOT-109-1,
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