Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - transceivers RS485 1/1 SOIC 8

V upto70V

FAULT

M0092-01

SN65HVD1785, SN65HVD1786

SN65HVD1787, SN65HVD1791

SN65HVD1792, SN65HVD1793

www.ti.com

SLLS872H –JANUARY 2008–REVISED FEBRUARY 2010

Fault-Protected RS-485 Transceivers With Extended Common-Mode Range

Check for Samples: SN65HVD1785, SN65HVD1786, SN65HVD1787, SN65HVD1791, SN65HVD1792, SN65HVD1793

FEATURES

• Bus-Pin Fault Protection to: • Failsafe Receiver for Open-Circuit,

Short-Circuit and Idle-Bus Conditions

– > ±70 V ('HVD1785, 86,91,92)

• Low Power Consumption

– > ±30 V ('HVD1787, 93)

– Low Standby Supply Current, 1 mA Typ

• Common-Mode Voltage Range (–20 V to 25 V)

More Than Doubles TIA/EIA 485 Requirement – I

5 mA Quiescent During Operation

• Bus I/O Protection • Power-Up, Power-Down Glitch-Free Operation

– ±16 kV JEDEC HBM Protection

APPLICATIONS

• Reduced Unit Load for Up to 256 Nodes

• Designed for RS-485 and RS-422 Networks

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).

PRODUCT SELECTION GUIDE

PART NUMBER DUPLEX SIGNALING RATE NODES CABLE LENGTH

SN65HVD1785 Half 115 kbps Up to 256 1500 m

SN65HVD1786 Half 1 Mbps Up to 256 150 m

SN65HVD1787 Half 10 Mbps Up to 64 50 m

SN65HVD1791 Full 115 kbps Up to 256 1500 m

SN65HVD1792 Full 1 Mbps Up to 256 150 m

SN65HVD1793 Full 10 Mbps Up to 64 50 m

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.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (26 pages)

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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 www.ti.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 www.ti.com SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 ABSOLUTE MAXIMUM RATINGS (1) VCC Supply voltage V A, B pins –70 to 70 V 'HVD1787 A, B pins –70 to 30 V 'HVD1793 Y, Z pins –70 to 30 V –0.3 to VCC + 0.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 www.ti.com ELECTRICAL CHARACTERISTICS over recommended operating conditions (unless otherwise noted) PARAMETER |VOD| Driver differential output voltage magnitude TEST CONDITIONS RS-485 with common-mode load, VCC > 4.75 V, see Figure 1 MIN TA ≤ 85°C 1.5 TA ≤ 105°C 1.4 RL = 54 Ω, 4.75 V ≤ VCC ≤ 5.25 V RL = 100 Ω, 4.75 V ≤ VCC ≤ 5.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 www.ti.com SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 SWITCHING CHARACTERISTICS over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 0.4 1.7 2.6 ms 0.8 2 ms 20 250 ns 0.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 www.ti.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 www.ti.com SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 PARAMETER MEASUREMENT INFORMATION (continued) 3V VCC DE D Input Generator VI CL = 50 pF ±20% A VOD 50 W B VI RL = 54 W ±1% CL Includes Fixture and Instrumentation Capacitance 50% 50% tPLH VOD tPHL »2V 90% 90% 0V 10% 0V 10% tr » –2 V tf S0303-01 Figure 3.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) A Input Generator VO R VI 50 W B 1.5 V CL = 15 pF ±20% RE 0V CL Includes Fixture and Instrumentation Capacitance 3V VI 50% 50% 0V tPLH tPHL 90% 90% VO 50% 10% 50% 10% tr VOH VOL tf S0306-01 Figure 6.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 www.ti.com SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 PARAMETER MEASUREMENT INFORMATION (continued) VCC A 0 V or 1.5 V R VO 1.5 V or 0 V RE Input Generator VI 1 kW ± 1% S1 B CL = 15 pF ±20% CL Includes Fixture and Instrumentation Capacitance 50 W 3V VI 50% 0V tPZH(2) VOH VO A at 1.5 V B at 0 V S1 to GND 50% GND tPZL(2) VCC VO 50% VOL A at 0 V B at 1.5 V S1 to VCC S0308-01 Figure 8.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 www.ti.com TYPICAL CHARACTERISTICS DRIVER OUTPUT CURRENT vs SUPPLY VOLTAGE HVD1787 RMS SUPPLY CURRENT vs SIGNALING RATE 70 50 ICC − RMS Supply Current − mA IO − Driver Output Current − mA 60 120 TA = 25°C DE at VCC D at VCC RL = 54 Ω 40 30 20 10 TA = 25°C RE at VCC DE at VCC RL = 54 Ω CL = 50 pF VCC = 5 V 100 80 60 0 −10 0.0 40 0.6 1.2 1.8 2.4 3.0 3.6 4.2 4.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 www.ti.com SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 TYPICAL CHARACTERISTICS (continued) VOD - Differential Output Voltage - V DIFFERENTIAL OUTPUT VOLTAGE vs DIFFERENTIAL LOAD CURRENT 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Load = 100 W Load = 300 W VCC = 5.5 V VCC = 5 V Load = 60 W VCC = 4.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 www.ti.com ADDITIONAL OPTIONS The SN65HVD17xx family also has options for J1708 applications, for always-enabled full-duplex versions (industry-standard SN65LBC179 footprint) and for inverting-polarity versions, which allow users to correct a reversal of the bus wires without re-wiring. Contact your local Texas Instruments representative for information on these options.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 www.ti.com SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 D Package (Top View) 1 R R 1 8 VCC INV 2 7 B DE 3 6 A D 4 5 GND 2 INV 6 A 4 D 7 B 3 DE D Package (Top View) 1 RINV 1 14 VCC RINV R 2 13 VCC R RE 3 12 A DE 4 11 B D 5 10 Z GND 6 9 Y 2 12 A 11 B 3 RE GND 7 8 8 9 5 10 Y DINV DINV P0066-04 D Z 4 DE S0311-01 Figure 15.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 www.ti.com Receiver Failsafe The differential receiver is “failsafe” to invalid bus states caused by: • open bus conditions such as a disconnected connector, • shorted bus conditions such as cable damage shorting the twisted-pair together, • or idle bus conditions that occur when no driver on the bus is actively driving.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 www.ti.com SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 REVISION HISTORY Changes from Original (January 2008) to Revision A Page • Changed Features Bullet From: Low Standby Supply Current, 2 mA Max To: Low Standby Supply Current, 1 mA Typ ..... 1 • Deleted columns to the PRODUCT SELECTION GUIDE for Package Options and Status. ............................................... 1 • Added text: For similar features with 3.
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SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 www.ti.com Changes from Revision F (November 2008) to Revision G Page • Added Notes for pin connections. ......................................................................................................................................... 2 • Added IOH = –400 mA conditions and values to the Receiver high-level output voltage ...................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Feb-2010 NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN65HVD1785DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 SN65HVD1786DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 SN65HVD1787DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN65HVD1785DR SOIC D 8 2500 367.0 367.0 35.0 SN65HVD1786DR SOIC D 8 2500 367.0 367.0 35.0 SN65HVD1787DR SOIC D 8 2500 367.0 367.0 35.0 SN65HVD1791DR SOIC D 14 2500 367.0 367.0 38.0 SN65HVD1792DR SOIC D 14 2500 367.0 367.0 38.0 SN65HVD1793DR SOIC D 14 2500 367.0 367.0 38.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.