HA12187FP-ER-E

Overview

The HA12187FP-ER-E 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 characteristics, current output drivers, and a standby function. It operates within a power-supply voltage range of 5 V ±0.5 V. The driver outputs and receiver inputs are rated to withstand high voltages up to a maximum rating of 18 V, ensuring robust performance in automotive environments.

Feature Summary

• Supports two data inputs via dedicated pins
• Integrates comparators with hysteresis for both inputs and receivers
• Features current drive output drivers for signal transmission
• Includes a standby mode activated by low logic level on control pin

Applications

• Automotive audio equipment controllers
• Two-wire serial bus interfaces in vehicle systems

Procurement Notes

Verify the specific suffix ER-E against official Renesas documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with the required 5V supply voltage and 18V withstand ratings for the target automotive application. Cross-reference the part number with current datasheets to confirm availability status and any potential obsolescence notices.

Selection Notes

Select this component when designing automotive audio systems requiring a reliable two-wire serial bus interface. The built-in hysteresis comparators provide noise immunity suitable for automotive electrical environments. Verify that the system operates within the specified 5V ±0.5V supply range and that the 3.8mA typical output current meets the load requirements of the connected bus lines.

Part Context

The HA12187 series belongs to Renesas's legacy portfolio of bus interface drivers originally developed for Hitachi automotive applications. These components are engineered specifically for the harsh electromagnetic and voltage conditions found in automotive audio and control networks. The FP package variant indicates a plastic encapsulation suitable for surface or through-hole mounting depending on the specific footprint design.

Replacement Considerations

Consult Renesas replacement guides for direct equivalents. No verified substitute part numbers are available in the provided source material.