DS90LV049屬于集成電路（IC）的驅(qū)動(dòng)器接收器收發(fā)器。由美國(guó)德州儀器公司制造生產(chǎn)的DS90LV049驅(qū)動(dòng)器，接收器，收發(fā)器該系列產(chǎn)品的主要功能是提供必需的硬件資源，以通過(guò)延長(zhǎng)電纜或印制線進(jìn)行通信。確切的功能會(huì)因所采用的通信協(xié)議而異，可能包括諸如瞬態(tài)抑制之類(lèi)的功能，這些功能對(duì)于通信用途可能并非絕對(duì)必要，但對(duì)于可能的使用環(huán)境卻是明智之選。

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.