SN74LS423N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

Name: SN74LS423N
Brand: Texas Instruments
SKU: SN74LS423N
Availability: InStock

SN74LS423N is a dual retriggerable monostable multivibrator IC from Texas Instruments. Features 2-bit output with minimum pulse width of 116ns, 15pF load capacitance, and LS-family logic. From $2.71, in stock worldwide shipping.

ACTIVEIntegrated CircuitVerified Apr 2026

Package / Visual Reference

SN74LS423NDual-In-Line Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Dual-In-Line Packages
Pin Count: 16
Lifecycle: ACTIVE
Datasheet: SN74LS423N Datasheet PDF
Category: Integrated Circuit
Price: From $2.7125(MOQ 89)
Temp Range: ?°C to 70.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of SN74LS423N?

Dual retriggerable monostable multivibrator with independent A and B sections
Minimum output pulse width of 116ns at REXT=5kΩ and CEXT=0 for precise timing control
LS-family TTL logic with 15pF load capacitance and 8mA output sink current
16-pin PDIP package with external RC timing components for flexible pulse width configuration

What is SN74LS423N used for?

The SN74LS423N is widely used in digital timing circuits, pulse generation, and signal conditioning applications. It serves as a reliable one-shot timer in microprocessor systems, industrial control boards, and communications equipment. The retriggerable feature makes it ideal for watchdog timers, debounce circuits, and frequency-to-pulse width conversion in embedded systems.

What are the specifications of SN74LS423N?

YTEOL	15
Additional Feature	RETRIGGERABLE; MIN OUTPUT PULSE WIDTH = 116NS @ REXT = 5K OHM & CEXT = 0
Family	LS
JESD-30 Code	R-PDIP-T16
JESD-609 Code	e4
Load Capacitance (CL)	15pF
Logic IC Type	MONOSTABLE MULTIVIBRATOR
Max I(ol)	0.008A
Number of Bits	2
Number of Data/Clock Inputs	2
Number of Functions	2
Output Polarity	COMPLEMENTARY
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	DIP16,.3
Package Shape	RECTANGULAR
Package Style	IN-LINE
Packing Method	TUBE
Power Supply Current-Max (ICC)	20mA
Propagation Delay (tpd)	56ns
Qualification Status	Not Qualified
Supply Voltage-Max (Vsup)	5.25V
Supply Voltage-Min (Vsup)	4.75V
Supply Voltage-Nom (Vsup)	5V
Surface Mount	NO
Technology	TTL
Temperature Grade	COMMERCIAL
Terminal Finish	Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form	THROUGH-HOLE
Terminal Pitch	2.54mm
Terminal Position	DUAL
Package	Dual-In-Line Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.39.00.90
Country of Origin	Malaysia, Mexico

Where can I find the SN74LS423N datasheet?

SN74LS423N Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for SN74LS423N?

Compatible alternatives and drop-in replacements for SN74LS423N:

SN74LS423DG4Texas Instruments

Monostable Multivibrator, LS Series, 2-Func, TTL, PDSO16

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

What is the minimum output pulse width of the SN74LS423N?

The SN74LS423N has a minimum output pulse width of 116ns when REXT is 5kΩ and CEXT is 0pF. The pulse width can be extended by increasing the external resistor and capacitor values connected to the RXT and CXT pins, allowing flexible timing configuration from nanoseconds to milliseconds.

What are typical applications for the SN74LS423N monostable multivibrator?

The SN74LS423N is commonly used in pulse generation, digital timing circuits, signal debouncing, watchdog timer implementations, and frequency-to-pulse-width conversion. Its dual retriggerable sections make it suitable for industrial control systems, communication equipment, and embedded microprocessor designs requiring precise one-shot timing.

What package type is the SN74LS423N available in and what is its pin count?

The SN74LS423N is available in a 16-pin Dual-In-Line Package (PDIP), with JESD-30 code R-PDIP-T16. This through-hole package is ideal for prototyping and through-hole PCB designs, offering easy hand-soldering and breadboard compatibility.

Is the SN74LS423N retriggerable and why does that matter?

Yes, the SN74LS423N is a retriggerable monostable multivibrator, meaning a new trigger pulse applied before the output pulse ends will restart the timing cycle. This feature is essential in applications like watchdog timers and noise immunity circuits, where continuous triggering must keep the output active as long as input signals are present.

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About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

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AvailabilityIn Stock

Reference Price (USD)

From $2.7125

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
89+	$3.3900	$301.71
500+	$2.9500	$1475.00
1000+	$2.8200	$2820.00
2500+	$2.7300	$6825.00
10000+	$2.7125	$27125.00

pcs

Unit price: $3.3900 · Total: $301.71

In Stock · 24h Response · Worldwide Shipping

Direct Contact

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”

Marco Rossi

CTO, AutoDrive Systems, Italy

SN74LS423N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

What are the key features of SN74LS423N?

What is SN74LS423N used for?

What are the specifications of SN74LS423N?

Compliance & Regulatory

Where can I find the SN74LS423N datasheet?

What are equivalent replacements for SN74LS423N?

Frequently Asked Questions

What is the minimum output pulse width of the SN74LS423N?

What are typical applications for the SN74LS423N monostable multivibrator?

What package type is the SN74LS423N available in and what is its pin count?

Is the SN74LS423N retriggerable and why does that matter?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

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