UC1543J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock

Name: UC1543J
Brand: Texas Instruments
SKU: UC1543J
Availability: InStock

UC1543J is a single-channel voltage supervisor and reset IC from Texas Instruments in a ceramic 16-pin DIP package. It monitors supply rails and asserts reset to protect systems from undervoltage faults. From $8.50 in stock worldwide shipping.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

UC1543JCeramic Dual-In-Line Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Ceramic Dual-In-Line Packages
Pin Count: 16
Lifecycle: ACTIVE
Datasheet: UC1543J Datasheet PDF
Category: Integrated Circuit
Temp Range: -55.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of UC1543J?

Single-channel voltage supervisor with fixed threshold detection ensures reliable system reset on undervoltage events
Ceramic glass-sealed DIP-16 package offers superior reliability for military, aerospace, and harsh-environment applications
Single-function reset architecture simplifies integration into power sequencing circuits without additional discrete components
JESD-609 compliant and rated for extended temperature ranges common in industrial and defense electronics

What is UC1543J used for?

UC1543J is used as a system reset supervisor in mission-critical embedded controllers, military electronics, and industrial PLCs where supply rail integrity must be continuously monitored. Its ceramic 16-pin DIP package makes it particularly suitable for high-reliability designs operating in wide temperature environments such as aerospace avionics and defense communication systems. The device also fits legacy board repairs and retrofit designs requiring a through-hole reset IC with guaranteed long-term availability.

What are the specifications of UC1543J?

Pbfree Code	Yes
YTEOL	15
Adjustable Threshold	NO
Analog IC - Other Type	VOLTAGE SUPERVISOR/RESET IC
JESD-30 Code	R-GDIP-T16
JESD-609 Code	e0
Number of Channels	1
Number of Functions	1
Package Body Material	CERAMIC, GLASS-SEALED
Package Equivalence Code	DIP16,.3
Package Shape	RECTANGULAR
Package Style	IN-LINE
Qualification Status	Not Qualified
Supply Current-Max (Isup)	15mA
Supply Voltage-Max (Vsup)	40V
Supply Voltage-Min (Vsup)	4.5V
Supply Voltage-Nom (Vsup)	10V
Surface Mount	NO
Technology	CMOS
Temperature Grade	MILITARY
Terminal Finish	Tin/Lead (Sn/Pb)
Terminal Form	THROUGH-HOLE
Terminal Pitch	2.54mm
Terminal Position	DUAL
Threshold Voltage-Nom	+2.5V
Package	Ceramic Dual-In-Line Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.39.00.90

Where can I find the UC1543J datasheet?

UC1543J Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for UC1543J?

Compatible alternatives and drop-in replacements for UC1543J:

UC1543J883BTexas Instruments

Voltage Supervisor/Reset IC, Fixed, 1 Channel, +2.5V, CMOS, CDIP16

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

What is the package type of UC1543J and why is it preferred in high-reliability designs?

UC1543J comes in a ceramic glass-sealed 16-pin DIP package (DIP-16, 0.3-inch pitch). Ceramic packaging provides hermetic sealing, which resists moisture ingress and extreme temperatures, making it the preferred choice for aerospace, defense, and industrial systems that must operate reliably over thousands of hours.

How many channels does UC1543J monitor, and is its threshold voltage adjustable?

UC1543J monitors a single voltage channel with a fixed, non-adjustable threshold. This single-function, 1-channel architecture reduces component count and design complexity in systems where only one supply rail requires supervision and reset assertion.

In which applications is UC1543J commonly used as a voltage supervisor?

UC1543J is used in military avionics, aerospace control electronics, and industrial automation controllers where a 16-pin ceramic DIP voltage supervisor provides supply monitoring across a wide temperature range. It is also used in legacy telecom and defense boards requiring a through-hole reset IC with long lifecycle availability of 15 years (YTEOL).

What distinguishes UC1543J from plastic-packaged voltage supervisors in procurement?

UC1543J uses a ceramic glass-sealed body (JESD-609 code e0) rather than a plastic mold compound, giving it superior moisture resistance and a broader operating temperature range. For procurement in defense or space programs, this ceramic qualification is often a hard requirement that standard plastic 1-channel supervisors cannot meet.

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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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UC1543J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock

What are the key features of UC1543J?

What is UC1543J used for?

What are the specifications of UC1543J?

Compliance & Regulatory

Where can I find the UC1543J datasheet?

What are equivalent replacements for UC1543J?

Frequently Asked Questions

What is the package type of UC1543J and why is it preferred in high-reliability designs?

How many channels does UC1543J monitor, and is its threshold voltage adjustable?

In which applications is UC1543J commonly used as a voltage supervisor?

What distinguishes UC1543J from plastic-packaged voltage supervisors in procurement?

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

More from Texas Instruments

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