MAX9388EUP+

Overview

The MAX9388EUP+ is a fully differential, high-speed, low-jitter ECL/PECL multiplexer with a single output buffer. It functions as a 4:1 mux and is pin compatible with the MC100EP57. The device features extremely low propagation delays of 318ps typical and output-to-output skews of 3.9ps typical. It operates with a wide supply range of |VCC - VEE| from 2.375V to 5.5V. The MAX9388 includes two select inputs, SEL0 and SEL1, which are internally referenced to the on-chip output VBB.

Feature Summary

• Fully differential architecture designed for clock-and-data distribution applications
• Extremely low propagation delay and minimal output-to-output skew
• Internal pulldowns ensure low-default condition if select inputs are left open
• Differential inputs configurable for single-ended operation using on-chip reference voltage

Applications

• High-Speed Telecom and Datacom Applications
• Central Office Backplane Clock Distribution
• DSLAM/DLC

Procurement Notes

Verify the component matches the specific 4:1 multiplexer configuration with a single output buffer. Confirm the package type is TSSOP-20 and the temperature range is -40°C to +85°C. Ensure the ordering suffix corresponds to the lead-free (+) specification. Cross-reference the datasheet revision to confirm compatibility with existing designs.

Selection Notes

Select this component when a 4:1 multiplexer is required instead of the 5:1 variants in the family. It is suitable for systems needing pin compatibility with the MC100EP57. Consider its low jitter characteristics for sensitive clock distribution paths. Verify that the supply voltage range meets the system requirements for ECL or PECL logic levels.

Part Context

This part belongs to the MAX9386/MAX9387/MAX9388 family of differential ECL/PECL multiplexers. While the MAX9386 and MAX9387 offer 5:1 mux configurations, the MAX9388 provides a 4:1 mux structure. All devices share similar performance metrics regarding speed and jitter but differ in input/output counts and pin configurations.

Replacement Considerations

The MAX9388 is explicitly documented as pin compatible with the MC100EP57. No other direct substitute part numbers are listed in the provided documentation.