General Description

The MAX9234/MAX9236/MAX9238 deserialize three LVDS serial-data inputs into 21 single-ended LVCMOS/LVTTL outputs. A parallel-rate LVDS clock received with the LVDS data streams provides timing for deserialization. The outputs have a separate supply, allowing 1.8V to 5V output logic levels. All these devices are hot-swappable and allow “on-the-fly” frequency programming.

The MAX9234/MAX9236/MAX9238 feature DC balance, which allows isolation between a serializer and deserializer using AC-coupling. Each deserializer decodes data transmitted by one of the MAX9209/MAX9211/MAX9213/MAX9215 serializers. The MAX9234 has a rising-edge output strobe. The MAX9236/MAX9238 have a falling-edge output strobe. The MAX9234/MAX9236/MAX9238 operate in DC balanced mode only.

The MAX9234/MAX9236 operate with a parallel input clock of 8MHz to 34MHz, while the MAX9238 operates from 16MHz to 66MHz. The transition time of the single ended outputs is increased on the low-frequency version parts (MAX9234/MAX9236) for reduced EMI. The LVDS inputs meet ISO 10605 ESD specification, ±25kV for Air Gap Discharge and ±8kV Contact Discharge.

The MAX9234/MAX9236/MAX9238 are available in 48-pin TSSOP packages and operate over the -40°C to +85°C temperature range.

Features

♦ DC Balance Allows AC-Coupling for Wider Input

   Common-Mode Voltage Range

♦ On-the-Fly Frequency Programming

♦ Operating Frequency Range

   8MHz to 34MHz (MAX9234/MAX9236)

   16MHz to 66MHz (MAX9238)

♦ Falling-Edge Output Strobe (MAX9236/MAX9238)

♦ Slower Output Transitions for Reduced EMI

   (MAX9234/MAX9236)

♦ High-Impedance Outputs when PWRDWN Is Low

   Allow Output Busing

♦ 5V-Tolerant PWRDWN Input

♦ PLL Requires No External Components

♦ Up to 1.386Gbps Throughput

♦ Separate Output Supply Pins Allow Interface to

   1.8V, 2.5V, 3.3V, and 5V Logic

♦ LVDS Inputs Meet ISO 10605 ESD Requirements

♦ LVDS Inputs Conform to ANSI TIA/EIA-644 LVDS Standard

♦ Low-Profile, 48-Lead TSSOP Package

♦ +3.3V Main Power Supply

♦ -40°C to +85°C Operating Temperature Range

Applications

   Automotive Navigation Systems

   Automotive DVD Entertainment Systems

   Digital Copiers

   Laser Printers