SN65HVD30-SN65HVD35
SN65HVD36-SN65HVD39
www.ti.com
SLLS665–SEPTEMBER 2005
3.3V FULL-DUPLEX RS-485 DRIVERS AND RECEIVERS
Each driver and receiver has separate input and
output pins for full-duplex bus communication
designs. They are designed for balanced
transmission lines and interoperation with ANSI
TIA/EIA-485A, TIA/EIA-422-B, ITU-T v.11 and ISO
8482:1993 standard-compliant devices.
FEATURES
•
1/8 Unit-Load Option Available (Up to 256
Nodes on the Bus)
•
•
Bus-Pin ESD Protection Exceeds 15 kV HBM
Optional Driver Output Transition Times for
Signaling Rates (1) of 1 Mbps, 5 Mbps and 25
Mbps
The SN65HVD30, SN65HVD31, SN65HVD32,
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
Protection for Hot-Plugging Applications
technology for improved performance in long distance
applications.
•
•
•
5V Tolerant Inputs
The SN65HVD33, SN65HVD34, SN65HVD35,
SN65HVD38, and SN65HVD39 have active-high
driver enables and active-low receiver enables. A
very low, less than 1 µA, standby current can be
achieved by disabling both the driver and receiver.
The SN65HVD38 and SN65HVD39 implement
receiver equalization technology for improved
performance in long distance applications.
Bus Idle, Open, and Short Circuit Failsafe
Meets or exceeds the requirements of ANSI
TIA/EIA-485-A and RS-422 Compatible
•
5-V Devices available, SN65HVD50-59
APPLICATIONS
•
•
•
•
Utility Meters
DTE/DCE Interfaces
Industrial, Process, and Building Automation
Point-of-Sale (POS) Terminals and Networks
All devices are characterized for operation from -40°C
to +85°C.
The SN65HVD36 and SN65HVD38 implement
receiver equalization technology for improved jitter
performance on differential bus applications with data
rates up to 20 Mbps at cable lengths up to 160
meters.
DESCRIPTION
The SN65HVD3X devices are 3-state differential line
drivers and differential-input line receivers that
operate with 3.3-V power supply.
The SN65HVD37 and SN65HVD39 implement
receiver equalization technology for improved jitter
performance on differential bus applications with data
rates in the range of 1 to 5 Mbps at cable lengths up
to 1000 meters.
(1) The signaling rate of a line is the number of voltage
transitions that are made per second expressed in the units
bps (bits per second).
IMPROVED REPLACEMENT FOR:
Part Number
Replace with
xxx3491
SN65HVD33:
Better ESD protection (15kV vs 2kV or not specified) Higher Signaling
Rate (25Mbps vs 20Mbps) Fractional Unit Load (64 Nodes vs 32)
MAX3491E
MAX3076E
MAX3073E
MAX3070E
SN65HVD33:
SN65HVD33:
SN65HVD34:
SN65HVD35:
Higher Signaling Rate (25Mbps vs 12Mbps) Fractional Unit Load
(64 Nodes vs 32)
Higher Signaling Rate (25Mbps vs 16Mbps) Lower Standby Current
(1 µA vs 10 µA)
Higher Signaling Rate (5Mbps vs 500kbps) Lower Standby Current
(1 µA vs 10 µA)
Higher Signaling Rate (1Mbps vs 250kbps) Lower Standby Current
(1 µA vs 10 µA)
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, 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.
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