HCPL-900J

Overview

The HCPL-900J is a quad-channel unidirectional CMOS digital isolator utilizing magnetic coupling technology. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 100 MBd. The device features a propagation delay of 15 ns maximum, with a typical pulse width distortion of 2 ns. It provides an isolation voltage of 2500 Vrms and a common-mode transient immunity of 15 kV/µs. The component is housed in a 16-pin SOIC-Narrow package and functions reliably across an operating temperature range of -40°C to +100°C.

Feature Summary

• Unidirectional signal transmission for four independent channels
• CMOS logic level compatibility for 3.3 V and 5 V systems
• High-speed magnetic coupling barrier for superior noise immunity
• Symmetrical design ensuring minimal channel-to-channel skew

Applications

• Isolation of parallel buses and peripheral interfaces
• Digital fieldbus communication systems
• Multiplexed data transmission circuits
• Computer peripheral interface isolation

Procurement Notes

Verify the specific suffix code (e.g., -000E) against the datasheet to confirm lead-free status and RoHS compliance. Confirm the package variant matches the required footprint, as the family includes both narrow and wide SOIC options. Ensure static protection procedures are followed during handling to prevent ESD damage. Cross-reference the manufacturer part number with official Broadcom documentation to validate current production status and availability constraints.

Selection Notes

Select this component when high-density unidirectional isolation is required for parallel data lines. The 100 MBd speed rating suits applications demanding rapid data throughput without significant latency. Consider the 15 kV/µs CMTI rating for environments with high electromagnetic interference. The 16-pin SOIC package offers a compact solution for space-constrained PCB layouts while maintaining robust electrical isolation characteristics between circuit domains.

Part Context

This device belongs to the HCPL-09xx series of high-speed digital isolators from Broadcom. The series leverages GMR technology to achieve industry-leading speed and transient rejection capabilities. It serves as a critical interface component for separating noisy power domains from sensitive logic circuits in industrial and computing applications.

Replacement Considerations

HCPL-090J-000E is a direct equivalent part number representing the same functional specifications and pinout configuration.