描述 Description

The SN65LVDM050, and SN65LVDM051 are differential line drivers and receivers that use low-voltage differential signaling (LVDS) to achieve signaling rates as high as 500 Mbps (per TIA/EIA-644 definition). These circuits are similar to TIA/EIA-644 standard compliant devices (SN65LVDS) counterparts, except that the output current of the drivers is doubled. This modification provides a minimum differential output voltage magnitude of 247 mV across a 50- load simulating two transmission lines in parallel. This allows having data buses with more than one driver or with two line termination resistors. The receivers detect a voltage difference of 50 mV with up to 1 V of ground potential difference between a transmitter and receiver.

The intended application of these devices and signaling techniques is point-to-point and multipoint, baseband data transmission over a controlled impedance media of approximately 100of characteristic impedance. The transmission media may be printed-circuit board traces, backplanes, or cables.

The SN65LVDM050Q and SN65LVDM051Q are characterized for operation from ?40°C to 125°C. Additionally, Q1 suffixed parts are qualified in accordance with AEC-Q100 stress test qualification for integrated circuits.

特性 Features

? Qualified for Automotive Applications
? ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
? Low-Voltage Differential 50- Line Drivers and Receivers
? Signaling Rates up to 500 Mbps
? Bus-Terminal ESD Exceeds 12 kV
? Operates From a Single 3.3 V Supply
? Low-Voltage Differential Signaling With Typical Output Voltages of 340 mV With a 50- Load
? Valid Output With as Little as 50-mV Input Voltage Difference
? Propagation Delay Times
? Driver: 1.7 ns Typ
? Receiver: 3.7 ns Typ

? Power Dissipation at 200 MHz
? Driver: 50 mW Typical
? Receiver: 60 mW Typical

? LVTTL Input Levels Are 5 V Tolerant
? Driver Is High Impedance When Disabled or With VCC