HCS362T-I/SN

Specialized ICS Overview

The HCS362T-I/SN is a code hopping encoder from Microchip Technology, part of the KEELOQ series. It operates on a 2.0V to 6.3V supply and utilizes an 8-SOIC surface-mount package. The device features a programmable 28/32-bit serial number, two 64-bit encryption keys, and a 60-bit seed. Each transmission generates a unique 69-bit code comprising a 32-bit hopping portion and a 37-bit fixed portion, ensuring security against code grabbing. It includes four button inputs, an RF enable output, and internal timing components.

Specialized ICS Feature Summary

• KEELOQ code hopping technology with 69-bit unique transmission codes
• Programmable 28/32-bit serial number and two 64-bit encryption keys
• Supports PWM and Manchester modulation formats
• Integrated low voltage detector and LED driver

Specialized ICS Applications

• Automotive Remote Keyless Entry (RKE) systems
• Gate and garage door openers
• Burglar alarm systems

Specialized ICS Procurement Notes

Verify the 'T' suffix indicates Tape & Reel packaging and 'SN' denotes the SOIC-8 case. Confirm the '-I' grade matches industrial temperature requirements. Check current availability status as this component may be subject to lifecycle changes.

Specialized ICS Selection Notes

Select based on required voltage range (2.0V–6.3V) and modulation type (PWM or Manchester). Ensure the receiver supports the specific KEELOQ algorithm and synchronization parameters. Verify that the 8-SOIC package fits the PCB layout constraints.

Specialized ICS Part Context

This model is the tape-and-reel variant of the HCS362 encoder. It belongs to the KEELOQ family, designed for secure unidirectional communication. It enhances previous models like the HCS300 with a larger seed value and CRC error detection.

Specialized ICS Replacement Considerations

Direct replacements must support KEELOQ encryption and similar pinouts. Consider the HCS362 in other packages (e.g., PDIP, TSSOP) if form factor differs. Verify compatibility with existing decoder firmware before substitution.

Specialized ICS FAQ

What is the function of the S3/RFEN pin?

It serves as Switch Input 3 or can be configured as an RF Enable output to interface with PLL circuits.

How does the device handle battery low conditions?

An onboard low voltage detector transmits a status bit in each code word and can alter LED blinking patterns.

What modulation formats are supported?

The HCS362 supports both Pulse Width Modulation (PWM) and Manchester Encoding.