MAX3640

Supply Voltage, V_CC................................................-0.5V to 5.0V
Input Voltage (LVDS, TTL)..........................-0.5V to (V_CC + 0.5V)
Output Voltage (LVDS)...............................-0.5V to (V_CC + 0.5V)
Continuous Power Dissipation (T_A = +85°C)
48-Pin TQFP (derate 12.5mW/°C) .................................813mW
Operating Temperature Range.............................0°C to +85°C
Storage Temperature Range .......................... -55°C to +150°C
Lead Temperature (soldering, 10s) ...............................+300°C

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The MAX3640 is a dual-path crosspoint switch for use at OC-12 data rates. The MAX3640 can be used to receive and transmit 622Mbps low-voltage differentialsignals (LVDS) across a backplane with minimum jitter accumulation. Each path incorporates input buffers, multiplexers, a crosspoint switch, and output drivers. The four output channels have a redundant set of outputs for test or fanning purposes. The MAX3640 offers signal- path redundancy for critical data streams.

The MAX3640 has a unique power-saving feature.When a set of four output channels has been de-selected,the output drivers are powered down to reduce power consumption by 165mW. The fully differential architecture ensures low crosstalk, jitter accumulation, and signal skew.

The MAX3640 is available in a 48-pin TQFP package and operates from a +3.3V supply over the 0°C to +85°C temperature range.