HOT-SWAPPABLE, 21-BIT, DC-BALANCED LVDS DESERIALIZERS

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.

• 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 Active-Low PWRDWN Is Low Allow Output Busing

5V-Tolerant Active-Low 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