HA12187FP-EL-E

Overview

The HA12187FP-EL-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 comparator circuits with hysteresis, current output drivers, receiver input comparators, receiver output circuits, and a standby function. It operates within a power-supply voltage range of 5 V ±0.5 V. The driver outputs provide a typical current drive of 3.8 mA. Both the driver output and receiver input can withstand high voltages up to a maximum rating of 18 V. The receiver supports a wide common-mode input operating range of 0 to 5 V typical.

Feature Summary

• Supports two data inputs via dedicated pins
• Integrates comparators with hysteresis characteristics for both inputs and receivers
• Features current drive output drivers for robust signal transmission
• Includes a standby function activated by low logic level on pin 8

Applications

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

Procurement Notes

Verify the specific suffix EL-E against official Renesas documentation to confirm tape-and-reel packaging details and any minor electrical variations compared to the standard FP package. Ensure compatibility with existing board layouts requiring the specified pin configuration and thermal characteristics. Cross-reference the latest datasheet revision to confirm active status and availability constraints.

Selection Notes

Select this component when designing automotive audio systems requiring a reliable two-wire serial bus interface. The built-in hysteresis comparators help ensure signal integrity in electrically noisy environments. The high-voltage tolerance of 18 V provides protection against transient events common in automotive applications. Verify that the 5 V supply requirement aligns with the system's power distribution network.

Part Context

The HA12187 series belongs to Renesas' portfolio of specialized interface ICs for automotive applications. It is part of the legacy product line developed for bus interface functions in car audio controllers. The FP package variant is commonly used in surface-mount assemblies where space efficiency and thermal performance are critical for long-term reliability in vehicle interiors.