HA12187FP-EL-EA

Overview

The HA12187FP-EL-EA is a bus interface driver and receiver integrated circuit manufactured by Renesas Electronics Corporation. Designed for automotive audio equipment controllers, it implements a two-wire serial bus architecture. The device integrates a two-input OR circuit, input and receiver comparator circuits with hysteresis, current output drivers, and a standby function. It operates within a power-supply voltage range of 5 V ±0.5 V. The driver output and receiver input can withstand high voltages up to a maximum rating of 18 V. The typical output current is 3.8 mA, and the common-mode input operating range is 0 to 5 V.

Feature Summary

• Implements a two-wire serial bus interface suitable for automotive audio applications
• Integrates comparators with hysteresis characteristics for both inputs and receivers
• Features a standby mode activated by a low signal on pin 8

Applications

• Automotive audio equipment controllers

Procurement Notes

Verify the specific suffix EL-EA against official Renesas documentation to confirm tape-and-reel packaging details and RoHS compliance status. Ensure the component matches the original Hitachi/Renesas specification sheet REJ09B0344 or equivalent. Confirm availability through authorized distributors as this may be an older generation part.

Selection Notes

Select this IC when designing automotive audio systems requiring a robust two-wire serial bus interface. The wide common-mode input range and high-voltage tolerance make it suitable for noisy automotive environments. Verify that the 5 V supply requirement aligns with the system's logic levels and that the 3.8 mA drive current meets the bus load requirements.

Part Context

The HA12187 series was originally developed by Hitachi, which later became part of Renesas Electronics. This component belongs to the legacy bus interface driver family. It is distinct from Renesas' modern microcontrollers and gate drivers, serving specifically as a dedicated interface chip for serial communication in automotive infotainment and control units.

Replacement Considerations

Check for direct pin-compatible replacements in the HA12187 series, such as the standard HA12187FP. Verify if newer Renesas interfaces offer similar functionality with updated packaging or enhanced features.