Datasheet

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FEATURES

APPLICATIONS

DESCRIPTION

GND

D or P PACKAGE

(TOP VIEW)

LOGIC DIAGRAM (Positive Logic)

SN75HVD08 , SN65HVD08

SLLS550C – NOVEMBER 2002 – REVISED JULY 2006

WIDE SUPPLY RANGE RS-485 TRANSCEIVER

The driver differential outputs and receiver

differential inputs connect internally to form a

• Operates With a 3-V to 5.5-V Supply

differential input/output (I/O) bus port that is designed

• Consumes Less Than 90 mW Quiescent

to offer minimum loading to the bus whenever the

Power

driver is disabled or not powered. The drivers and

receivers have active-high and active-low enables

• Open-Circuit, Short Circuit, and Idle-Bus

respectively, which can be externally connected

Failsafe Receiver

together to function as a direction control.

• 1/8

Unit-Load (up to 256 nodes on the bus)

• Bus-Pin ESD Protection Exceeds 16 kV HBM

• Driver Output Voltage Slew-Rate Limited for

Optimum Signal Quality at 10 Mbps

• Electrically Compatible With ANSI

TIA/EIA-485 Standard

• Data Transmission With Remote Stations

Powered From the Host

• Isolated Multipoint Data Buses

• Industrial Process Control Networks

• Point-of-Sale Networks

• Electric Utility Metering

The SN65HVD08 combines a 3-state differential line

driver and differential line receiver designed for

balanced data transmission and interoperation with

ANSI TIA/EIA-485-A and ISO-8482E

standard-compliant devices.

The wide supply voltage range and low quiescent

current requirements allow the SN65HVD08s to

operate from a 5-V power bus in the cable with as

much as a 2-V line voltage drop. Busing power in the

cable can alleviate the need for isolated power to be

generated at each connection of a ground-isolated

bus.

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 (20 pages)

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SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 WIDE SUPPLY RANGE RS-485 TRANSCEIVER FEATURES • • • • • • • Operates With a 3-V to 5.
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SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 Remote (One of n Shown) Host 5 V Power Isolation Barrier Direct Connection to Host SN65HVD08 5 V Return Power Bus and Return Resistance 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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SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 RECOMMENDED OPERATING CONDITIONS MIN Supply voltage, VCC Low-level input voltage, VIL Driver, driver enable, and receiver enable inputs Low-level output current, IOL Operating free-air temperature, TA (1) UNIT 3 5.5 V 12 V 2.25 VCC 0 0.
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SN75HVD08, SN65HVD08 www.ti.
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SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 PARAMETER MEASUREMENT INFORMATION (continued) 3V VCC DE D Input Generator VI VOD tPLH CL Includes Fixture and Instrumentation Capacitance RL = 54 Ω ± 1% B 50 Ω 1.5 V VI CL = 50 pF ±20% A 1.5 V tPHL 90% VOD ≈2V 90% 0V 10% 0V 10% ≈ –2 V tr tf Generator: PRR = 500 kHz, 50% Duty Cycle, tr <6 ns, tf <6 ns, Zo = 50 Ω Figure 3. Driver Switching Test Circuit and Voltage Waveforms A 3V D 3V S1 VO VI 1.5 V 1.
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SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 PARAMETER MEASUREMENT INFORMATION (continued) A R Input Generator 50 Ω VI VO B 1.5 V CL = 15 pF ±20% RE 0V CL Includes Fixture and Instrumentation Capacitance Generator: PRR = 500 kHz, 50% Duty Cycle, tr <6 ns, tf <6 ns, Zo = 50 Ω 3V 1.5 V VI 1.5 V 0V tPLH tPHL VOH 90% 90% VO 1.5 V 10% 1.5 V 10% V OL tr tf Figure 6.
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SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 PARAMETER MEASUREMENT INFORMATION (continued) VCC A 0 V or 1.5 V R B 1.5 V or 0 V VI S1 CL = 15 pF ±20% RE Input Generator A 1 kΩ ± 1% VO B CL Includes Fixture and Instrumentation Capacitance 50 Ω Generator: PRR = 100 kHz, 50% Duty Cycle, tr <6 ns, tf <6 ns, Zo = 50 Ω 3V VI 1.5 V 0V tPZH VOH A at 1.5 V B at 0 V S1 to B 1.5 V VO GND tPZL ≈ VCC VO 1.5 V A at 0 V B at 1.5 V S1 to A VOL Figure 8.
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SN75HVD08, SN65HVD08 www.ti.
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SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 TYPICAL CHARACTERISTICS DIFFERENTIAL OUTPUT VOLTAGE vs SUPPLY VOLTAGE DRIVER OUTPUT CURRENT vs SUPPLY VOLTAGE 4 70 D and DE at VCC RL = 54 Ω 60 I O – Driver Output Current – mA 3.5 Differential Output Voltage – V TA = 25°C DE at VCC D at VCC RL = 54 Ω TA = –40°C TA = 25°C 3 TA = 85°C 2.5 2 1.5 50 40 30 20 10 1 2.5 3 3.5 4 4.5 5 VCC – Supply Voltage – V 5.5 0 6 0 Figure 9.
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SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 TYPICAL CHARACTERISTICS (continued) ENABLE TIME vs COMMON-MODE VOLTAGE (SEE Figure 14) 500 450 400 Enable Time − ns 350 3.3 V 300 250 5V 200 150 100 50 0 -7 -2 3 8 13 V(TEST) − Common-Mode Voltage − V Figure 13. 375 W ± 1% Y D 0 or 3 V -7 V < V(TEST) < 12 V VOD 60 W ± 1% Z DE 375 W ± 1% Input Generator V 50 W 50% tpZH(diff) VOD (high) 1.5 V 0V tpZL(diff) -1.5 V VOD (low) Figure 14.
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SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 APPLICATION INFORMATION As electrical loads are physically distanced from their power source, the effects of supply and return line impedance and the resultant voltage drop must be accounted. If the supply regulation at the load cannot be maintained to the circuit requirements, it forces the use of remote sensing, additional regulation at the load, bigger or shorter cables, or a combination of these.
PAGE 12
SN75HVD08, SN65HVD08 www.ti.com SLLS550C – NOVEMBER 2002 – REVISED JULY 2006 The features of the SN65HVD08 are particularly good for the application of Figure 17. Due to added supply source impedance, the low quiescent current requirements and wide supply voltage tolerance allow for the poorer load regulation. Local Power Source Opto Isolators Rest of Board AN OPTO ALTERNATIVE The ISO150 is a two-channel, galvanically isolated data coupler capable of data rates of 80 Mbps.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 8-Jan-2007 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
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PACKAGE MATERIALS INFORMATION www.ti.com 19-Mar-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel Diameter Width (mm) W1 (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN65HVD08DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 SN75HVD08DR 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 19-Mar-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN65HVD08DR SOIC D 8 2500 340.5 338.1 20.6 SN75HVD08DR 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.