MAX9394EHJ+

Overview

The MAX9394EHJ+ is a high-speed analog and digital crosspoint IC featuring a 2:1 multiplexer and a 1:2 demultiplexer with loopback. It operates on a single 3.0V to 3.6V supply within an extended temperature range of -40°C to +85°C. The device accepts LVDS, HSTL, or other GND-referenced differential inputs and provides LVDS outputs compliant with TIA/EIA-644 standards. Packaged in a 32-pin TQFP (5x5mm), it supports guaranteed 1.5GHz operation with low jitter characteristics.

Feature Summary

• Simultaneous independent loopback control for channel A and channel B via dedicated logic inputs
• High-level input fail-safe detection designed for LVDS, HSTL, and other ground-referenced differential signaling standards
• Ultra-low pseudorandom bit sequence jitter ensures reliable performance in high-speed links sensitive to timing errors
• LVCMOS/LVTTL logic inputs control internal routing between the multiplexer and demultiplexer sections

Applications

• High-Speed Telecom/Datacom Equipment
• Central Office Backplane Clock Distribution
• DSLAM
• Protection Switching
• Fault-Tolerant Systems

Procurement Notes

Verify the specific suffix EHJ+ corresponds to the lead-free 32-pin TQFP package variant. Confirm that the high-level fail-safe feature aligns with your system's input common-mode voltage requirements, as this distinguishes the MAX9394 from the MAX9395. Ensure supply bypassing capacitors are placed close to the VCC pins to maintain signal integrity at high frequencies.

Selection Notes

Select this component when a combined multiplexing and demultiplexing function with loopback capability is required in a single package. It is suitable for applications needing redundancy switching or clock distribution where low skew and minimal added jitter are critical. Verify compatibility with LVDS output loads and ensure the control logic levels match the available LVCMOS or LVTTL signals.

Part Context

This part belongs to the MAX9394/MAX9395 family of high-speed multiplexers and demultiplexers manufactured by Analog Devices Inc./Maxim Integrated. The series is designed for telecom and storage applications requiring signal redundancy. The MAX9394 specifically targets ground-referenced inputs, whereas the MAX9395 variant addresses voltage-referenced standards like CML and LVPECL.

Replacement Considerations

MAX9395EHJ+