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SN65HVD1792 Datasheet Preview

SN65HVD1792 Datasheet

RS-485 Transceiver

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SN65HVD1785, SN65HVD1786, SN65HVD1787
SN65HVD1791, SN65HVD1792, SN65HVD1793
SLLS872I – JANUARY 2008 – REVISED AUGUST 2015
SN65HVD17xx Fault-Protected RS-485 Transceivers With Extended Common-Mode Range
1 Features
1 Bus-Pin Fault Protection to:
– > ±70 V ('HVD1785, 86, 91, 92)
– > ±30 V ('HVD1787, 93)
• Common-Mode Voltage Range (–20 V to 25 V)
More Than Doubles TIA/EIA 485 Requirement
• Bus I/O Protection
– ±16 kV JEDEC HBM Protection
• Reduced Unit Load for Up to 256 Nodes
• Failsafe Receiver for Open-Circuit, Short-Circuit
and Idle-Bus Conditions
• Low Power Consumption
– Low Standby Supply Current, 1 μA Typical
– ICC 5 mA Quiescent During Operation
• Power-Up, Power-Down Glitch-Free Operation
2 Applications
• Designed for RS-485 and RS-422 Networks
3 Description
These devices are designed to survive overvoltage
faults such as direct shorts to power supplies, mis-
wiring faults, connector failures, cable crushes, and
tool mis-applications. They are also robust to ESD
events, with high levels of protection to human-body
model specifications.
These devices combine a differential driver and a
differential receiver, which operate from a single
power supply. In the 'HVD1785, 'HVD1786, and
'HVD1787, the driver differential outputs and the
receiver differential inputs are connected internally to
form a bus port suitable for half-duplex (two-wire bus)
communication. In the 'HVD1793, the driver
differential outputs and the receiver differential inputs
are separate pins, to form a bus port suitable for full-
duplex (four-wire bus) communication. These ports
feature a wide common-mode voltage range, making
the devices suitable for multipoint applications over
long cable runs. These devices are characterized
from –40°C to 105°C.
For similar features with 3.3-V supply operation, see
the SN65HVD1781 (SLLS877).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SN65HVD1785,
SN65HVD1786,
SN65HVD1787
SOIC (8)
PDIP (8)
4.90 mm × 3.91 mm
9.81 mm × 6.35 mm
SN65HVD1791,
SN65HVD1792,
SN65HVD1793
SOIC (14)
8.65 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Example of Bus Short to Power Supply
VFAULT up to 70 V
M0092-01
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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SN65HVD1792 Datasheet Preview

SN65HVD1792 Datasheet

RS-485 Transceiver

No Preview Available !

SN65HVD1785, SN65HVD1786, SN65HVD1787
SN65HVD1791, SN65HVD1792, SN65HVD1793
SLLS872I – JANUARY 2008 – REVISED AUGUST 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Product Selection Guide ....................................... 4
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ..................................... 5
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 6
7.5 Electrical Characteristics........................................... 7
7.6 Thermal Considerations ............................................ 8
7.7 Switching Characteristics .......................................... 8
7.8 Typical Characteristics ............................................ 10
8 Parameter Measurement Information ................ 11
9 Detailed Description ............................................ 15
9.1 Overview ................................................................. 15
9.2 Functional Block Diagram ....................................... 15
9.3 Feature Description................................................. 15
9.4 Device Functional Modes........................................ 18
10 Application and Implementation........................ 19
10.1 Application Information.......................................... 19
10.2 Typical Application ............................................... 19
11 Power Supply Recommendations ..................... 21
12 Layout................................................................... 22
12.1 Layout Guidelines ................................................. 22
12.2 Layout Example .................................................... 22
13 Device and Documentation Support ................. 23
13.1 Documentation Support ........................................ 23
13.2 Related Links ........................................................ 23
13.3 Community Resources.......................................... 24
13.4 Trademarks ........................................................... 24
13.5 Electrostatic Discharge Caution ............................ 24
13.6 Glossary ................................................................ 24
14 Mechanical, Packaging, and Orderable
Information ........................................................... 24
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision H (February 2010) to Revision I
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
Changes from Revision G (April 2009) to Revision H
Page
• Deleted 70-V from the data sheet title.................................................................................................................................... 1
• Changed first Features Bullet From: Bus-Pin Fault Protection to > ±70 V To: Bus-Pin Fault Protection to: > ±70 V
('HVD1785, 86,91,92), > ±30 V ('HVD1787, 93)..................................................................................................................... 1
• Changed Voltage range at A and B inputs in the ABS MAX RATINGS table, adding seperate conditions for the
different devices...................................................................................................................................................................... 5
• Changed From: Voltage input range, transient pulse, A and B, through 100 To: Transient overvoltage pulse
through 100 per TIA-485..................................................................................................................................................... 5
• Added the 70-V Fault-Protection section.............................................................................................................................. 16
Changes from Revision F (November 2008) to Revision G
Page
• Added IOH = –400 μA conditions and values to the Receiver high-level output voltage ........................................................ 7
• Added Receiver enabled VCM > VCC ...................................................................................................................................... 8
• Added Receiver Failsafe information.................................................................................................................................... 15
• Changed the Receiver Failsafe section................................................................................................................................ 16
2
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Copyright © 2008–2015, Texas Instruments Incorporated
Product Folder Links: SN65HVD1785 SN65HVD1786 SN65HVD1787 SN65HVD1791 SN65HVD1792 SN65HVD1793


Part Number SN65HVD1792
Description RS-485 Transceiver
Maker etcTI
Total Page 3 Pages
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