Maxim's MAX9386/MAX9387 are fully differential, high-speed, low-jitter ECL/PECL multiplexers (muxes) with output buffer. The devices are designed for clock-and-data distribution applications, and feature extremely low propagation delays (318 ps, typ) and output-to-output skews (3.9 ps, typ). The MAX9386 is a 5:1 mux with a single-output buffer. The MAX9387 is a 5:1 mux with dual output buffers, and is intended for use in redundant systems.

Three single-ended select inputs, SEL0, SEL1, and SEL2, control the mux function on the MAX9386/MAX9387. The mux select inputs are compatible with ECL/PECL logic, and are internally referenced to the on-chip output V_BB, nominally V_CC - 1.425 V. The select inputs accept signals between V_CC and V_EE. Internal pulldowns to V_EE ensure a low-default condition if the select inputs are left open.

The differential inputs D_, D_ -bar can be configured to accept a single-ended signal when the unused complementary input is connected to the on-chip reference output V_BB. All the differential inputs have internal bias and clamping circuits that ensure low-default output states when the inputs are left open. The MAX9386/MAX9387 operate with a wide supply range |V_CC - V_EE| of 2.375 V to 5.5 V.