1FEATURES

2• Up to 400 Mbps Switching Rates

• Flow-Through Pinout Simplifies PCB Layout

• 50 ps Typical Driver Channel-to-Channel Skew

• 50 ps Typical Receiver Channel-to-Channel

Skew

• 3.3 V Single Power Supply Design

• TRI-STATE Output Control

• Internal Fail-Safe Biasing of Receiver Inputs

• Low Power Dissipation (70 mW at 3.3 V Static)

• High Impedance on LVDS Outputs on Power

Down

• Conforms to TIA/EIA-644-A LVDS Standard

• Industrial Operating Temperature Range

(−40°C to +85°C)

• Available in Low Profile 16 Pin TSSOP

Package

DESCRIPTION

The DS90LV049 is a dual CMOS flow-through

differential line driver-receiver pair designed for

applications requiring ultra low power dissipation,

exceptional noise immunity, and high data

throughput. The device is designed to support data

rates in excess of 400 Mbps utilizing Low Voltage

Differential Signaling (LVDS) technology.

The DS90LV049 drivers accept LVTTL/LVCMOS

signals and translate them to LVDS signals. On the

other hand, the receivers accept LVDS signals and

translate them to 3 V CMOS signals. The LVDS input

buffers have internal failsafe biasing that places the

outputs to a known H (high) state for floating receiver

inputs. In addition, the DS90LV049 supports a TRI-

STATE function for a low idle power state when the

device is not in use.

The EN and EN inputs are ANDed together and

control the TRI-STATE outputs. The enables are

common to all four gates.