The MAX3783 is a dual serial multiplexer (mux) and buffer with selectable line-side loopback for system interconnect and serial backplane applications up to 2.7Gbps. Each independent channel consists of a transmitter with fanout of two and a receiver with a 2:1 input mux. Selectable loopback paths support system testing. Operating from a single 3.3V supply, this device has current-mode logic (CML) inputs and outputs, which can be AC-coupled for PECL compatibility, if desired. The IC is packaged in a compact 48-pin TQFP-EP package with exposed pad. Typical power consumption is 1.12W. Applications include 2.7Gbps Serial Communications System Interconnect, Serial Backplane Fail-Over and Protection Switching.
The MAX3783 provides two independent high‑speed channels, each with a transmitter fan‑out of two and a 2:1 multiplexed receiver. It operates from a single 3.3 V supply, supports CML inputs and outputs, and offers optional AC‑coupled PECL compatibility. Selectable line‑side loopback paths enable system testing, and on‑chip 50 Ω termination resistors simplify board design.
The device is packaged in a compact 48‑pin TQFP‑EP with an exposed pad that must be soldered to the circuit board for proper thermal and electrical performance. Typical power consumption is 1.12 W, and the part includes TTL‑compatible control pins for loopback and channel selection.
| Maximum Serial Data Rate | 2.75‑3.125 Gbps |
|---|---|
| Typical Power Consumption | 1.12 W |
| Supply Voltage (VCC) | -0.5 V to 4.0 V |
| Continuous Current at Serial Outputs | ±36 mA |
The device operates from –0.5 V to 4.0 V on the VCC pin.
The exposed pad must be soldered to the circuit board ground for proper thermal and electrical performance.
Typical power consumption is 1.12 W.