The MAX3693 serializer is ideal for converting 4-bit- wide, 155Mbps parallel data to 622Mbps serial data in ATM and SDH/SONET applications. Operating from a single +3.3V supply, this device accepts low-voltage differential-signal (LVDS) clock and data inputs for interfacing with high-speed digital circuitry, and delivers a 3.3V PECL serial-data output. A fully integrated PLL synthesizes an internal 622Mbps serial clock from a 155.52MHz, 77.76MHz, 51.84MHz, or 38.88MHz reference clock. The MAX3693 is available in the extended temperature range (-40°C to +85°C), in a 32-pin TQFP package.
The MAX3693 serializer converts 4‑bit‑wide, 155 Mbps parallel data to 622 Mbps serial data for ATM and SDH/SONET applications. It operates from a single +3.3 V supply, accepts LVDS clock and data inputs, and provides a 3.3 V PECL serial‑data output. The device includes an integrated PLL that synthesizes the 622 Mbps serial clock from selectable reference frequencies (155.52 MHz, 77.76 MHz, 51.84 MHz, or 38.88 MHz) and is offered in a 32‑pin TQFP package suitable for -40 °C to +85 °C operation.
Key features include LVDS input termination, PECL output termination requirements, detailed pin descriptions, and layout recommendations for high‑frequency performance. The datasheet provides absolute maximum ratings, DC and AC electrical characteristics, typical operating curves, and packaging information.
| Supply Voltage | +3.3 V |
|---|---|
| Serial Data Rate | 622 Mbps |
| Parallel Data Width | 4‑bit |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 32‑pin TQFP |
| Power Dissipation | 215 mW |
| Clock Reference Frequencies | 155.52 MHz, 77.76 MHz, 51.84 MHz, 38.88 MHz |
| LVDS Input Differential Voltage | 100 mV |
| Transistor Count | 2925 |
The MAX3693 operates from a single +3.3 V supply.
It can use 155.52 MHz, 77.76 MHz, 51.84 MHz, or 38.88 MHz reference clocks.
The device is rated for -40 °C to +85 °C.
It is supplied in a 32‑pin TQFP package.