1 Features

• Differential line drivers for 30Ω to 55Ω loads and

data rates1 up to 200Mbps, clock frequencies up to

100MHz

• Supports multipoint bus architectures

• Operates from a single 3.3V supply

• Characterized for operation from –40°C to 85°C

• 16-pin SOIC (JEDEC MS-012) and 16-pin TSSOP

(JEDEC MS-153) packaging

2 Applications

• AdvancedTCA™ (ATCA™) Clock Bus Driver

• Clock distribution

• Backplane or cabled multipoint data transmission

in telecommunications, automotive, industrial, and

other computer systems

• Cellular base stations

• Central-office and PBX switching

• Bridges and routers

• Low-power high-speed short-reach alternative to

TIA/EIA-485

3 Description

The SN65MLVD047A is a quadruple line driver that

complies with the TIA/EIA-899 standard, Electrical

Characteristics of Multipoint-Low-Voltage Differential

Signaling (M−LVDS). The output current of this

M−LVDS device has been increased, in comparison

to standard LVDS compliant devices, in order to

support doubly terminated transmission lines and

heavily loaded backplane bus applications. Backplane

applications generally require impedance matching

termination resistors at both ends of the bus. The

effective impedance of a doubly terminated bus can

be as low as 30Ω due to the bus terminations, as

well as the capacitive load of bus interface devices.

SN65MLVD047A drivers allow for operation with loads

as low as 30Ω. The SN65MLVD047A devices allow

for multiple drivers to be present on a single bus.

SN65MLVD047A drivers are high impedance when

disabled or unpowered. Driver edge rate control

is incorporated to support operation. The M−LVDS

standard allows up to 32 nodes (drivers and/or

receivers) to be connected to the same media in a

backplane when multiple bus stubs are expected from

the main transmission line to interface devices. The

SN65MLVD047A provides 9kV ESD protection on all

bus pins.