General Description

The MAX9205/MAX9207 serializers transform 10-bit-wide parallel LVCMOS/LVTTL data into a serial high-speed bus low-voltage differential signaling (LVDS) data stream. The serializers typically pair with deserializers like the MAX9206/MAX9208, which receive the serial output and transform it back to 10-bit-wide parallel data.

The MAX9205/MAX9207 transmit serial data at speeds up to 400Mbps and 660Mbps, respectively, over PCB traces or twisted-pair cables. Since the clock is recovered from the serial data stream, clock-to-data and data-to-data skew that would be present with a parallel bus are eliminated.

The MAX9205 can lock to a 16MHz to 40MHz system clock, while the MAX9207 can lock to a 40MHz to 66MHz system clock. The serializer output is held in high impedance until the device is fully locked to the local system clock, or when the device is in power down mode.

Both the devices operate from a single +3.3V supply, are specified for operation from -40°C to +85°C, and are available in 28-pin SSOP packages.

Features

♦ Standalone Serializer (vs. SERDES) Ideal for

   Unidirectional Links

♦ Framing Bits for Deserializer Resync Allow Hot

   Insertion Without System Interruption

♦ LVDS Serial Output Rated for Point-to-Point and

   Bus Applications

♦ Wide Reference Clock Input Range

   16MHz to 40MHz (MAX9205)

   40MHz to 66MHz (MAX9207)

♦ Low 140ps (pk-pk) Deterministic Jitter (MAX9207)

♦ Low 34mA Supply Current (MAX9205)

♦ 10-Bit Parallel LVCMOS/LVTTL Interface

♦ Up to 660Mbps Payload Data Rate (MAX9207)

♦ Programmable Active Edge on Input Latch

♦ Pin-Compatible Upgrades to DS92LV1021 and DS92LV1023

Applications

   Cellular Phone Base Stations

   Add Drop Muxes

   Digital Cross-Connects

   DSLAMs

   Network Switches and Routers

   Backplane Interconnect