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1 Features

1? Operates With a 3.3-V Supply

? Bus-Pin ESD Protection Exceeds 16-kV Human-

Body Model (HBM)

? 1/8 Unit-Load Option Available (up to 256 Nodes

on Bus)

? Optional Driver Output Transition Times for

Signaling Rates (1) of 1 Mbps, 10 Mbps, and 32 Mbps

? Based on ANSI TIA/EIA-485-A

? Bus-Pin Short Circuit Protection From

–7 V to 12 V

? Open-Circuit, Idle-Bus, and Shorted-Bus Fail-Safe

Receiver

? Glitch-Free Power-Up and Power-Down Protection

for Hot-Plugging Applications

? SN75176 Footprint

? Supports Extreme Temperature Applications:

– Controlled Baselines

– One Assembly and Test Sites bus–

One Fabrication Sites

– Available in Extreme (–55°C/210°C)

Temperature Range (2)

– Extended Product Life Cycles

– Extended Product-Change Notifications

– Product Traceability

– Texas Instruments' High Temperature

Products Use Highly Optimized Silicon (Die)

Solutions With Design and Process

Enhancements to Maximize Performance Over

Extended Temperatures.

2 Applications

? Down-Hole Drilling

? High Temperature Environments

? Digital Motor Controls

? Utility Meters

? Chassis-to-Chassis Interconnects

? Electronic Security Stations

? Industrial Process Controls

? Building Automation

? Point-of-Sale (POS) Terminals and Networks

3 Description

The SN65HVD11-HT device combines a 3-state

differential line driver and differential input line

receiver that operates with a single 3.3-V power

supply. It is designed for balanced transmission lines

and meets or exceeds ANSI TIA/EIA-485-A and ISO

8482:1993, with the exception that the thermal shutdown is removed. This differential bus transceiver

is a monolithic integrated circuit designed for

bidirectional data communication on multipoint bus–

transmission lines. The driver and receiver have active-high and active-low enables, respectively, that

can be externally connected together to function as

direction control.

The driver differential outputs and receiver differential

inputs connect internally to form a differential input/

output (I/O) bus port that is designed to offer

minimum loading to the bus when the driver is disabled or VCC = 0.