1 Features

• Switching rates up to 32MHz

• Operate from a single 3.3V supply

• Propagation delay time: 8ns typical

• Pulse skew time: 500ps typical

• High output-drive current: ±30 mA

• Controlled rise and fall times: 3ns typical

• Differential output voltage with 100Ω

load: 1.5V typical

• Ultra-low power dissipation

– DC, 0.3mW maximum

– 32MHz All channels (no load), 385mW typical

• Accept 5V logic inputs with 3.3V supply

• Low-voltage pin-to-pin compatible replacement for

AM26C31, AM26LS31, MB571

• High output impedance in power-off condition

• Driver output short-protection circuit

• Package options include plastic small-outline (D,

NS) packages

2 Applications

• Motor control: brushless DC and brushed DC

• Field transmitters: temperature sensors and

pressure sensors

• Temperature sensors or controllers using Modbus

3 Description

The AM26LV31C and AM26LV31I are BiCMOS

quadruple differential line drivers with 3-state outputs.

They are designed to be similar to TIA/EIA-422-B

and ITU Recommendation V.11 drivers with reduced

supply-voltage range.

The devices are optimized for balanced-bus

transmission at switching rates up to 32MHz. The

outputs have very high current capability for driving

balanced lines such as twisted-pair transmission lines

and provide a high impedance in the power-off

condition. The enable function is common to all four

drivers and offers the choice of active-high or activelow

enable inputs. The AM26LV31C and AM26LV31I

are designed using Texas Instruments proprietary

LinIMPACT-C60™ technology, facilitating ultra-low

power consumption without sacrificing speed. These

devices offer optimum performance when used with

the AM26LV32 quadruple line receivers.

The AM26LV31C is characterized for operation from

0°C to 70°C. The AM26LV31I is characterized for

operation from –45°C to 85°.C