The MAX9389 is a fully differential, high-speed, low-jitter, 8-to-1 ECL/PECL multiplexer (mux) with dual output buffers. The device is designed for clock and data distribution applications, and features extremely low propagation delay and output-to-output skew. It has three single-ended select inputs that are compatible with ECL/PECL logic. The differential inputs can be configured to accept a single-ended signal. The MAX9389 operates with a wide supply range and is suitable for high-speed telecom and datacom applications.
The MAX9389 is a fully differential, high‑speed, low‑jitter 8‑to‑1 ECL/PECL multiplexer with dual output buffers, intended for clock and data distribution in telecom and datacom systems. It features three single‑ended select inputs (SEL0‑SEL2) and internal reference outputs (VBB1, VBB2) for single‑ended operation.
Key specifications include a typical propagation delay of 310 ps, output‑to‑output skew up to 30 ps, a supply range of 2.375 V to 5.5 V, operation from –40 °C to +85 °C, and availability in 32‑lead TQFP and thin QFN packages. The datasheet also provides pin descriptions, electrical characteristics, layout recommendations, and ordering information.
| Typical Propagation Delay | 310 ps |
|---|---|
| Maximum Output‑to‑Output Skew | 30 ps |
| Supply Voltage Range (VCC‑VEE) | 2.375 V to 5.5 V |
| Operating Temperature Range | -40 °C to +85 °C |
| ESD Protection (HBM) | ≥2 kV |
The device has a typical propagation delay of 310 ps.
The maximum output‑to‑output skew is 30 ps.
It operates with a supply range of 2.375 V to 5.5 V (VCC‑VEE).