Microchip Technology HCS360/SN

The HCS360 produces a 67-bit transmission consisting of a 32-bit hopping portion and a 35-bit fixed portion. Four button inputs support multiple command combinations. The changing hopping code is intended for provisioned, synchronized receiver systems; device selection must account for the complete encoder, decoder and RF path.

Microchip identifies SN as an 8-lead plastic SOIC with a 150-mil body. The non-T order option does not specify tape-and-reel delivery. LCDChip registers this package as 8-SOIC (0.154", 3.90 mm width); verify the controlled package drawing and pin-one mark for the board footprint.

Layout checks

• Confirm SOIC land pattern and orientation.
• Route DATA to the external transmitter modulation stage.
• Provide supply bypassing and review LED output loading.

This generic JPG does not show device pin assignments.

The manufacturer SOIC pin diagram assigns pin 1 to S0, 2 to S1, 3 to S2, 4 to S3, 5 to VSS, 6 to DATA, 7 to LED and 8 to VDD. Confirm signal polarity and electrical loading in the current data sheet before routing.

Check the manufacturer data sheet for timing, programming, waveform selection and detailed electrical limits.

A matching 8-SOIC outline does not establish interchangeability. Verify code-word length, algorithm and receiver compatibility, secret-key derivation, serial-number format, button encoding, modulation, supply range, temperature rating and programming process. The -I industrial option may have a different temperature qualification; no unverified internal alternative link is asserted.

Microchip Technology's HCS360 KEELOQ Code Hopping Encoder data sheet, DS40152F, defines the device features, code format, pin assignment, electrical limits and product identification system. The ordering table identifies SN as 8-lead 150-mil SOIC and distinguishes commercial and industrial temperature options and T tape-and-reel ordering.

Verify the exact HCS360/SN order code, package and lot labels, device markings and traceability records. Production acceptance should include programming verification and a synchronized transmission with the intended decoder; external marking alone cannot prove the programmed key.

Use the current Microchip HCS360 data sheet, package drawing and applicable notices for final circuit, programming and receiver approval. Replay resistance depends on proper key secrecy, receiver synchronization and end-to-end system design; this summary is not a security certification.