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APPLICATIONS

DESCRIPTION

IMPROVED REPLACEMENT FOR:

SN65HVD30 – SN65HVD39

SLLS665C – SEPTEMBER 2005 – REVISED JULY 2006

3.3V FULL-DUPLEX RS-485 DRIVERS AND RECEIVERS

Each driver and receiver has separate input and

output

pins

for

full-duplex

bus

communication

•

1/8 Unit-Load Option Available (Up to 256

designs.

They

are

designed

for

balanced

Nodes on the Bus)

transmission lines and interoperation with ANSI

•

Bus-Pin ESD Protection Exceeds 15 kV HBM

TIA/EIA-485A, TIA/EIA-422-B, ITU-T v.11 and ISO

8482:1993 standard-compliant devices.

•

Optional Driver Output Transition Times for

The

SN65HVD30,

SN65HVD31,

SN65HVD32,

25 Mbps

SN65HVD36 and SN65HVD37 are fully enabled with

no external enabling pins. The SN65HVD36 and

•

Low-Current Standby Mode: < 1

µA

SN65HVD37

implement

receiver

equalization

•

Glitch-Free Power-Up and Power-Down

technology

for

improved

performance

in

long

Protection for Hot-Plugging Applications

distance applications.

•

5-V Tolerant Inputs

The

SN65HVD33,

SN65HVD34,

SN65HVD35,

•

Bus Idle, Open, and Short Circuit Failsafe

SN65HVD38, and SN65HVD39 have active-high

•

Driver Current Limiting and Thermal

driver enables and active-low receiver enables. A

Shutdown

very low, less than 1

µA, standby current can be

achieved by disabling both the driver and receiver.

•

Meets or exceeds the requirements of ANSI

The

SN65HVD38

and

SN65HVD39

implement

TIA/EIA-485-A and RS-422 Compatible

receiver

equalization

technology

for

improved

•

5-V Devices available, SN65HVD50-59

performance in long distance applications.

(1)

The signaling rate of a line is the number of voltage

All devices are characterized for operation from

transitions that are made per second expressed in the units

–40

°C to 85°C.

bps (bits per second).

The

SN65HVD36

and

SN65HVD38

implement

receiver equalization technology for improved jitter

•

Utility Meters

performance on differential bus applications with

data rates up to 20 Mbps at cable lengths up to 160

•

DTE/DCE Interfaces

meters.

•

Industrial, Process, and Building Automation

The

SN65HVD37

and

SN65HVD39

implement

•

Point-of-Sale (POS) Terminals and Networks

receiver equalization technology for improved jitter

performance on differential bus applications with

data rates in the range of 1 to 5 Mbps at cable

The SN65HVD3X devices are 3-state differential line

lengths up to 1000 meters.

drivers

and

differential-input

line

receivers

that

operate with 3.3-V power supply.

Part Number

Replace with

xxx3491

SN65HVD33:

Better ESD protection (15kV vs 2kV or not specified) Higher Signaling Rate (25Mbps vs 20Mbps)

xxx3490

SN65HVD30:

Fractional Unit Load (64 Nodes vs 32)

MAX3491E

SN65HVD33:

Higher Signaling Rate (25Mbps vs 12Mbps) Fractional Unit Load (64 Nodes vs 32)

MAX3490E

SN65HVD30:

MAX3076E

SN65HVD33:

Higher Signaling Rate (25Mbps vs 16Mbps) Lower Standby Current (1

µA vs 10 µA)

MAX3077E

SN65HVD30:

MAX3073E

SN65HVD34:

Higher Signaling Rate (5Mbps vs 500kbps) Lower Standby Current (1

µA vs 10 µA)

MAX3074E

SN65HVD31:

MAX3070E

SN65HVD35:

Higher Signaling Rate (1Mbps vs 250kbps) Lower Standby Current (1

µA vs 10 µA)

MAX3071E

SN65HVD32:

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright © 2005–2006, Texas Instruments Incorporated

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.