Datasheet

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-20 V +25 V

-7V +12 V

SUPER485

RS485

-20V -15V -10V -5V 0 5V 10V 15V 20V 25V

0.1

100

HVD20

HVD23

HVD24

HVD21

HVD22

SignalingRate-Mbps

100

1000

CableLength-m

SN65HVD20, SN65HVD21

SN65HVD22, SN65HVD23, SN65HVD24

www.ti.com

SLLS552E –DECEMBER 2002–REVISED MAY 2010

Extended Common-Mode RS-485 Transceivers

Check for Samples: SN65HVD20, SN65HVD21, SN65HVD22, SN65HVD23, SN65HVD24

FEATURES

DESCRIPTION

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

The transceivers in the HVD2x family offer

More Than Doubles TIA/EIA-485 Requirement

performance far exceeding typical RS−485 devices.

• Receiver Equalization Extends Cable Length,

In addition to meeting all requirements of the

Signaling Rate (HVD23, HVD24)

TIA/EIA−485−A standard, the HVD2x family operates

• Reduced Unit-Load for up to 256 Nodes

over an extended range of common-mode voltage,

and has features such as high ESD protection, wide

• Bus I/O Protection to Over 16-kV HBM

receiver hysteresis, and failsafe operation. This family

• Failsafe Receiver for Open-Circuit,

of devices is ideally suited for long-cable networks,

Short-Circuit and Idle-Bus Conditions

and other applications where the environment is too

• Low Standby Supply Current 1-µA Max

harsh for ordinary transceivers.

• More Than 100 mV Receiver Hysteresis

These devices are designed for bidirectional data

transmission on multipoint twisted-pair cables.

APPLICATIONS

Example applications are digital motor controllers,

remote sensors and terminals, industrial process

• Long Cable Solutions

control, security stations, and environmental control

– Factory Automation

systems.

– Security Networks

These devices combine a 3-state differential driver

– Building HVAC

and a differential receiver, which operate from a

single 5-V power supply. The driver differential

• Severe Electrical Environments

outputs and the receiver differential inputs are

– Electrical Power Inverters

connected internally to form a differential bus port

– Industrial Drives

that offers minimum loading to the bus. This port

features an extended common-mode voltage range

– Avionics

making the device suitable for multipoint applications

over long cable runs.

HVD2x APPLICATION SPACE

HVD2x Devices Operate Over a Wider

Common-Mode Voltage Range

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 (31 pages)

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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 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. DESCRIPTION (CONTINUED) The ‘HVD20 provides high signaling rate (up to 25 Mbps) for interconnecting networks of up to 64 nodes.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com Table 1. DRIVER FUNCTION TABLE HVD20, HVD21, HVD22 HVD23, HVD24 INPUT D ENABLE OUTPUTS DE A B H L X X OPEN H H L OPEN H H L Z Z H L H Z Z L INPUT D ENABLE OUTPUTS DE A B H L X X OPEN H H L OPEN H H L Z Z L L H Z Z H H = high level, L= low level, X = don’t care, Z = high impedance (off), ? = indeterminate Table 2.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com RECOMMENDED OPERATING CONDITIONS MIN NOM MAX 4.5 5 5.5 V −20 25 V 2 VCC 0 0.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION NOTE: Test load capacitance includes probe and jig capacitance (unless otherwise specified). Signal generator characteristics: rise and fall time <6 ns, pulse rate 100 kHz, 50% duty cycle, Zo = 50 Ω (unless otherwise specified). IO II 27 Ω VOD 0 V or 3 V 50 pF 27 Ω IO VOC Figure 1.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) VOD(SS) VOD(RING) VOD(PP) 0 V Differential VOD(RING) VOD(SS) NOTE: VOD(RING) is measured at four points on the output waveform, corresponding to overshoot and undershoot from the VOD(H) and VOD(L) steady state values. Figure 5.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) 3V DE 1.5 V 0V A D 0 V or 3 V CL = 50 pF RL = 54 Ω VOD B 1.5 V V OD DE Signal Generator td(Wake) td(Standby) 0.2 V 50 Ω Figure 8. Driver Standby/Wake Test Circuit and Waveforms IOS VO Voltage Source Figure 9. Driver Short-Circuit Test IO VID VO Figure 10.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) D VCC VCC DE A 54 Ω B R 3V RE 0V 1.5 V 0V CL = 15 pF RE Signal Generator 1 kΩ tPZH tPHZ VOH VOH -0.5 V 50 Ω 1.5 V R GND Figure 12. Receiver Enable Test Circuit and Waveforms, Data Output High 0V VCC D DE A 54 Ω B R 3V RE 5V 1.5 V 0V CL = 15 pF RE Signal Generator 1 kΩ tPZL tPLZ VCC 50 Ω 1.5 V R VOL +0.5 V VOL Figure 13.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) Bus Data Valid Region 200 mV Bus Data Transition Region -40 mV VID -200 mV -1.5 V Bus Data Valid Region tp(SET) tp(RESET) VOH R 1.5 V VOL Figure 15. Receiver Active Failsafe Definitions and Waveforms VTEST 100 Ω 0V Pulse Generator, 15 ms Duration, 1% Duty Cycle 1.5 ms 15 ms V TEST Figure 16.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com THERMAL INFORMATION SN65HVD2x THERMAL METRIC (1) Junction-to-case(top) thermal resistance θJB Junction-to-board thermal resistance ψJT Junction-to-top characterization parameter ψJB Junction-to-board characterization parameter θJC(bottom) (4) (5) (6) (7) PINS 78.1 52.5 56.5 57.6 50.4 38.6 4.1 19.1 32.6 31.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com TYPICAL CHARACTERISTICS HVD20, HVD23 BUS PIN CURRENT vs BUS PIN VOLTAGE HVD21, HVD22, HVD24 BUS PIN CURRENT vs BUS PIN VOLTAGE 150 600 DE = 0 V DE = 0 V 100 Bus Pin Current - m A Bus Pin Current - m A 400 200 VCC = 0 V 0 VCC = 5 V 200 VCC = 0 V 0 VCC = 5 V 50 100 400 600 -30 50 -20 0 -10 10 20 150 -30 30 -20 Bus Pin Voltage - V Figure 18.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com TYPICAL CHARACTERISTICS (continued) HVD20, HVD23 PEAK-TO-PEAK JITTER vs CABLE LENGTH RECEIVER OUTPUT VOLTAGE vs DIFFERENTAL INPUT VOLATGE 30 6 VIT(-) 25 VCM = 25 V VCM = 25 V 4 VCM = 0 V VCM = 0 V 3 2 VCM = 20 V VCM = 20 V 1 Peak-to-Peak Jitter - ns VO - Receiver Output Voltage - V 5 VIT(+) 0 -0.1 0.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com APPLICATION INFORMATION THEORY OF OPERATION The HVD2x family of devices integrates a differential receiver and differential driver with additional features for improved performance in electrically-noisy, long-cable, or other fault-intolerant applications. The receiver hysteresis (typically 130 mV) is much larger than found in typical RS-485 transceivers.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com Figure 26. HVD22 Receiver Operation With 20-V Offset on Input Signal k0 (DC loss) p1 (MHz) k1 p2 (MHz) k2 p3 (MHz) k3 Similar to 160m of Belden 3105A 0.95 0.25 0.3 3.5 0.5 15 1 Similar to 250m of Belden 3105A 0.9 0.25 0.4 3.5 0.7 12 1 Similar to 500m of Belden 3105A 0.8 0.25 0.6 2.2 1 8 1 Similar to 1000m of Belden 3105A 0.6 0.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com INTEGRATED RECEIVER EQUALIZATION USING THE HVD23 Figure 28 illustrates the benefits of integrated receiver equalization as implemented in the HVD23 transceiver. In this test setup, a differential signal generator applied a signal voltage at one end of the cable, which was Belden 3105A twisted-pair shielded cable. The test signal was a pseudo-random bit stream (PRBS) of nonreturn-to-zero (NRZ) data.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com INTEGRATED RECEIVER EQUALIZATION USING THE HVD24 Figure 29 illustrates the benefits of integrated receiver equalization as implemented in the HVD24 transceiver. In this test setup, a differential signal generator applied a signal voltage at one end of the cable, which was Belden 3105A twisted-pair shielded cable. The test signal was a pseudo-random bit stream (PRBS) of nonreturn-to-zero (NRZ) data.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com NOISE CONSIDERATIONS FOR EQUALIZED RECEIVERS The simplest way of overcoming the effects of cable losses is to increase the sensitivity of the receiver. If the maximum attenuation of frequencies of interest is 20 dB, increasing the receiver gain by a factor of ten compensates for the cable. However, this means that both signal and noise are amplified.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com TEST MODE DRIVER DISABLE If the input signal to the D pin is such that: 1. the signal has signaling rate above 4 Mbps (for the ‘HVD21 and ‘HVD24) 2. the signal has signaling rate above 6 Mbps (for the ‘HVD20 and ‘HVD23) 3. the signal has average amplitude between 1.2 V and 1.6 V (1.4 V ±200 mV) 4.
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SN65HVD20, SN65HVD21 SN65HVD22, SN65HVD23, SN65HVD24 SLLS552E – DECEMBER 2002 – REVISED MAY 2010 www.ti.com REVISION HISTORY Changes from Original (December 2002) to Revision A • Page Changed tPZH, tPHZ, tPZL, and tPLZ - From a MAX value of 120 To include TYP and MAX values for each entry (RECEIVER SWITCHING CHARACTERISTICS table) ........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 4-May-2010 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 SN65HVD20DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 SN65HVD21DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 SN65HVD22DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 SN65HVD23DR SOIC D 8 2500 330.
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PACKAGE MATERIALS INFORMATION www.ti.com 4-May-2010 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN65HVD20DR SOIC D 8 2500 340.5 338.1 20.6 SN65HVD21DR SOIC D 8 2500 340.5 338.1 20.6 SN65HVD22DR SOIC D 8 2500 340.5 338.1 20.6 SN65HVD23DR SOIC D 8 2500 340.5 338.1 20.6 SN65HVD24DR SOIC D 8 2500 340.5 338.1 20.
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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 JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.