1FEATURES

2• >155.5 Mbps (77.7 MHz) switching rates

• High impedance LVDS outputs with power-off

• ±350 mV differential signaling

• Ultra low power dissipation

• 400 ps maximum differential skew (5V, 25°C)

• 3.5 ns maximum propagation delay

• Industrial operating temperature range

• Pin compatible with DS26C31, MB571 (PECL)

and 41LG (PECL)

• Conforms to ANSI/TIA/EIA-644 LVDS standard

• Offered in narrow body SOIC package

• Fail-safe logic for floating inputs

DESCRIPTION

The DS90C031B is a quad CMOS differential line

driver designed for applications requiring ultra low

power dissipation and high data rates. The device

supports data rates in excess of 155.5 Mbps (77.7

MHz) and uses Low Voltage Differential Signaling

(LVDS) technology.

The DS90C031B accepts TTL/CMOS input levels and

translates them to low voltage (350 mV) differential

output signals. In addition the driver supports a TRI-

STATE function that may be used to disable the

output stage, disabling the load current, and thus

dropping the device to an ultra low idle power state of

11 mW typical.

In addition, the DS90C031B provides power-off high

impedance LVDS outputs. This feature assures

minimal loading effect on the LVDS bus lines when

VCC is not present.

The DS90C031B and companion line receiver

(DS90C032B) provide a new alternative to high

power pseudo-ECL devices for high speed point-topoint

interface applications.