MAX9401/MAX9404 are extremely fast and low-skew quad ECL/PECL differential buffers/receivers for data and clock signals. The four channels can be operated synchronously with an external clock, or in asynchronous mode, determined by the state of the SEL input. An enable input provides the ability to force all the outputs to a differential low state. The MAX9401 has high-impedance (open) input and the MAX9404 has an integrated 100Ω differential input termination, which reduces external component count. Both devices have double amplitude swing open emitter outputs suitable for driving long cables. The MAX9401/MAX9404 operate over a VCC - VEE = +3.0V to +5.5V supply range, and are specified for operation from -40°C to +85°C. These devices are offered in space-saving 32-pin 5mm x 5mm QFN exposed-paddle (EP) and TQFP packages.
The MAX9401 and MAX9404 are quad ECL/PECL differential buffers/receivers designed for high‑speed data and clock driver applications. They support both synchronous and asynchronous operation and are suitable for driving long cables and double‑terminated links.
Key features include ultra‑low propagation delay (365 ps), very low channel‑to‑channel skew (10 ps), 900 mV differential output at 3 GHz, and operation over a wide supply range (+3.0 V to +5.5 V). The devices are offered in 32‑pin QFN‑EP and TQFP packages and operate from –40 °C to +85 °C.
| Propagation Delay (asynchronous mode) | 365 ps |
|---|---|
| Supply Current | 84 mA |
| Differential Output Voltage | 900 mV at 3.0 GHz |
| Operating Temperature Range | -40 °C to +85 °C |
The maximum differential input signal magnitude is 3.0 V.
The Vcc range for PECL operation is from +3.0 V to +5.5 V.
The propagation delay in asynchronous mode is 365 ps.