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NEW PRODUCT NEWS—edited by Rick Prescott

PASSIVE ENTRY TRANSPONDER/ENCODER

The HCS473 is a three-axis passive entry KEELOQ encoder, which features three transponder inputs for omni-directional detection and provides high security in an integrated package solution. The KEELOQ code-hopping technology is an industry standard for highly secure remote control and access control applications.

Designed for automotive passive keyless entry (PKE) system applications, the chip combines KEELOQ high security technology with a small 14-pin package outline, making the device an ideal solution for secure challenge and response systems.

KEELOQ technology eliminates the need for encoder firmware development and reduces external hardware requirements.

Currently, the majority of passive entry systems feature a single antenna, which results in a directional system that is sensitive to the orientation of the key. This product eliminates key orientation issues because the three transponders are positioned to provide an omni-directional solution.

The chip provides a high level of security with 64-bit encryption, bi-directional

Communication, and reduced access time for fast and secure authentication. There is also the capability to use the same key for two security systems (e.g., car and home). Additional features include a low standby current of less than 5 m A for long battery life, an RF PLL interface, input sensitivity of 20 mV, LED drive, and an internal calibrated oscillator.

The HCS473 is available in 14-pin PDIP and SOIC packages and is priced at $2.30 each in 10,000-unit quantities.

Microchip Technology Inc.
(480) 786-7200
Fax: (480) 899-9210
www.microchip.com

06-01

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