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CH451S AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

CH451S product

CH451S

Integrated Circuits (ICs)

LED DriverKeyboard ControllerWatchdog

The CH451S is a highly integrated peripheral chip designed for driving 8-digit LED displays and scanning 8x8 matrix keyboards, while providing system monitoring features.

Best for

  • Embedded systems requiring LED display and keyboard input
  • Space-constrained designs needing integrated peripheral control

Avoid if

  • Applications requiring high-speed parallel display interfaces
  • Systems where the 3V-5V voltage range is insufficient

Check before use

  • Serial interface timing requirements
  • Power supply decoupling for high-current LED segments

Key specifications

Supply Voltage
3V - 5V
Interface
4-Wire Serial
Package
SOP28
Max Segment Current
25mA

Compliance & Environment

RoHS
RoHS Compliant
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Consumer ElectronicsIndustrial Control

Datasheet

edfca8be7706bb791f50df3bbfec7c44_2403131118_WCH-Jiangsu-Qin-Heng-CH451S_C46001.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for CH451S: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

The CH451S is a multi-functional peripheral chip from WCH that combines an LED display driver, a 64-key keyboard scanner, and a microprocessor monitoring unit (watchdog/reset) into a single package.