DS75176BM/NOPB - NATIONAL SEMICONDUCTOR

DS75176B, DS75176BT

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SNLS381C –JULY 1998–REVISED APRIL 2013

DS75176B/DS75176BT Multipoint RS-485/RS-422 Transceivers

Check for Samples: DS75176B,DS75176BT

1FEATURES DESCRIPTION

The DS75176B is a high speed differential TRI-

23• Meets EIA Standard RS485 for Multipoint Bus STATE®bus/line transceiver designed to meet the

Transmission and is Compatible with RS-422. requirements of EIA standard RS485 with extended

• Small Outline (SOIC) Package Option Available common mode range (+12V to −7V), for multipoint

for Minimum Board Space. data transmission. In addition, it is compatible with

RS-422.

• 22 ns Driver Propagation Delays.

• Single +5V Supply. The driver and receiver outputs feature TRI-STATE

capability, for the driver outputs over the entire

•−7V to +12V Bus Common Mode Range common mode range of +12V to −7V. Bus contention

Permits ±7V Ground Difference Between or fault situations that cause excessive power

Devices on the Bus. dissipation within the device are handled by a thermal

• Thermal Shutdown Protection. shutdown circuit, which forces the driver outputs into

• High Impedance to Bus with Driver in TRI- the high impedance state.

STATE or with Power Off, Over the Entire DC specifications are guaranteed over the 0 to 70°C

Common Mode Range Allows the Unused temperature and 4.75V to 5.25V supply voltage

Devices on the Bus to be Powered Down. range.

• Pin Out Compatible with DS3695/A and

SN75176A/B.

• Combined Impedance of a Driver Output and

Receiver Input is Less Than One RS485 Unit

Load, Allowing up to 32 Transceivers on the

Bus.

• 70 mV Typical Receiver Hysteresis.

Connection and Logic Diagram

Figure 1. Top View

See Package Number P0008E or D0008A

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.

1Please 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.

2TRI-STATE is a registered trademark of Texas Instruments.

3All other trademarks are the property of their respective owners.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

DS75176B, DS75176BT

SNLS381C –JULY 1998–REVISED APRIL 2013

www.ti.com

Absolute Maximum Ratings (1)(2)

Supply Voltage, VCC 7V

Control Input Voltages 7V

Driver Input Voltage 7V

Driver Output Voltages +15V/ −10V

Receiver Input Voltages (DS75176B) +15V/ −10V

Receiver Output Voltage 5.5V

Continuous Power Dissipation @ 25°C for SOIC Package 675 mW (3)

for PDIP Package 900 mW (4)

Storage Temperature Range −65°C to +150°C

Lead Temperature

(Soldering, 4 seconds) 260°C

ESD Rating (HBM) 500V

(1) “Absolute Maximum Ratings” are those beyond which the safety of the device cannot be verified. They are not meant to imply that the

device should be operated at these limits. The tables of “Electrical Characteristics” provide conditions for actual device operation.

(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/Distributors for availability and specifications.

(3) Derate linearly @ 6.11 mW/°C to 400 mW at 70°C.

(4) Derate linearly at 5.56 mW/°C to 650 mW at 70°C.

Recommended Operating Conditions Min Max Units

Supply Voltage, VCC 4.75 5.25 V

Voltage at Any Bus Terminal −7 +12 V

(Separate or Common Mode)

Operating Free Air Temperature TA

DS75176B 0 +70 °C

DS75176BT −40 +85 °C

Differential Input Voltage, VID (1) −12 +12 V

(1) Differential - Input/Output bus voltage is measured at the noninverting terminal A with respect to the inverting terminal B.

Electrical Characteristics (1) (2)

0°C ≤TA≤70°C, 4.75V < VCC< 5.25V unless otherwise specified

Symbol Parameter Conditions Min Typ Max Units

VOD1 Differential Driver Output IO= 0 5 V

Voltage (Unloaded)

VOD2 Differential Driver Output See (Figure 2) R = 50Ω; (RS-422) (3) 2 V

Voltage (with Load) R = 27Ω; (RS-485) 1.5 V

ΔVOD Change in Magnitude of Driver

Differential Output Voltage For 0.2 V

Complementary Output States

VOC Driver Common Mode Output Voltage See (Figure 2) R = 27Ω3.0 V

Δ|VOC| Change in Magnitude of Driver

Common Mode Output Voltage 0.2 V

For Complementary Output States

(1) All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless

otherwise specified.

(2) All typicals are given for VCC = 5V and TA= 25°C.

(3) All worst case parameters for which this note is applied, must be increased by 10% for DS75176BT. The other parameters remain valid

for −40°C < TA< +85°C.

Product Folder Links: DS75176B DS75176BT

DS75176B, DS75176BT

www.ti.com

SNLS381C –JULY 1998–REVISED APRIL 2013

Electrical Characteristics (1) (2) (continued)

0°C ≤TA≤70°C, 4.75V < VCC< 5.25V unless otherwise specified

Symbol Parameter Conditions Min Typ Max Units

VIH Input High Voltage 2 V

VIL Input Low Voltage 0.8

DI, DE,

VCL Input Clamp Voltage IIN =−18 mA −1.5

RE , E

IIL Input Low Current VIL = 0.4V −200 μA

IIH Input High Current VIH = 2.4V 20 μA

IIN Input Current DO/RI, DO/RI VCC = 0V or 5.25V VIN = 12V +1.0 mA

DE = 0V VIN =−7V −0.8 mA

VTH Differential Input Threshold Voltage for −7V ≤VCM ≤+ 12V −0. +0.2 V

Receiver 2

ΔVTH Receiver Input Hysteresis VCM = 0V 70 mV

VOH Receiver Output High Voltage IOH =−400 μA 2.7 V

VOL Output Low Voltage RO IOL = 16 mA (3) 0.5 V

IOZR OFF-State (High Impedance) VCC = Max ±20 μA

Output Current at Receiver 0.4V ≤VO≤2.4V

RIN Receiver Input Resistance −7V ≤VCM ≤+12V 12 kΩ

ICC Supply Current No Load(3) Driver Outputs Enabled 55 mA

Driver Outputs Disabled 35 mA

IOSD Driver Short-Circuit VO=−7V (3) −250 mA

Output Current VO= +12V (3) +250 mA

IOSR Receiver Short-Circuit VO= 0V −15 −85 mA

Output Current

Switching Characteristics

VCC = 5.0V, TA= 25°C

Symbol Parameter Conditions Min Typ Max Units

tPLH Driver Input to Output RLDIFF = 60Ω12 22 ns

tPHL Driver Input to Output CL1 = CL2 = 100 pF 17 22 ns

trDriver Rise Time RLDIFF = 60Ω18 ns

tfDriver Fall Time CL1 =CL2 = 100 pF 18 ns

(Figure 4 and Figure 6)

tZH Driver Enable to Output High CL= 100 pF (Figure 5 and Figure 7) S1 29 100 ns

Open

tZL Driver Enable to Output Low CL= 100 pF (Figure 5 and Figure 7) S2 31 60 ns

Open

tLZ Driver Disable Time from Low CL= 15 pF (Figure 5 and Figure 7) S2 13 30 ns

Open

tHZ Driver Disable Time from High CL= 15 pF (Figure 5 and Figure 7) S1 19 200 ns

Open

tPLH Receiver Input to Output CL= 15 pF (Figure 3 and Figure 8) 30 37 ns

S1 and S2 Closed

tPHL Receiver Input to Output 32 37 ns

tZL Receiver Enable to Output Low CL= 15 pF (Figure 3 and Figure 9) S2 15 20 ns

Open

tZH Receiver Enable to Output High CL= 15 pF (Figure 3 and Figure 9) S1 11 20 ns

Open

tLZ Receiver Disable from Low CL= 15 pF (Figure 3 and Figure 9) S2 28 32 ns

Open

tHZ Receiver Disable from High CL= 15 pF (Figure 3 and Figure 9) S1 13 35 ns

Open

Product Folder Links: DS75176B DS75176BT

DS75176B, DS75176BT

SNLS381C –JULY 1998–REVISED APRIL 2013

www.ti.com

AC TEST CIRCUITS

Note: S1 and S2 of load circuit are closed except as otherwise

mentioned.

Figure 2. Figure 3.

Note: Unless otherwise specified the switches are closed.

Figure 4. Figure 5.

Switching Time Waveforms

Figure 6. Driver Propagation Delays and Transition Times

Figure 7. Driver Enable and Disable Times

Product Folder Links: DS75176B DS75176BT

DS75176B, DS75176BT

www.ti.com

SNLS381C –JULY 1998–REVISED APRIL 2013

Note: Differential input voltage may may be realized by grounding RI and pulsing RI between +2.5V and −2.5V

Figure 8. Receiver Propagation Delays

Figure 9. Receiver Enable and Disable Times

Function Tables

Table 1. DS75176B Transmitting(1)

Inputs Line Condition Outputs

RE DE DI DO DO

X 1 1 No Fault 0 1

X 1 0 No Fault 1 0

X 0 X X Z Z

X 1 X Fault Z Z

(1) X — Don't care condition

Z — High impedance state

Fault — Improper line conditons causing excessive power dissipation

in the driver, such as shorts or bus contention situations

**This is a fail safe condition

Product Folder Links: DS75176B DS75176BT

DS75176B, DS75176BT

SNLS381C –JULY 1998–REVISED APRIL 2013

www.ti.com

Table 2. DS75176B Receiving(1)

Inputs Outputs

RE DE RI-RI RO

0 0 ≥+0.2V 1

0 0 ≤ −0.2V 0

0 0 Inputs Open** 1

1 0 X Z

(1) X — Don't care condition

Z — High impedance state

Fault — Improper line conditons causing excessive power dissipation

in the driver, such as shorts or bus contention situations

**This is a fail safe condition

TYPICAL APPLICATION

Product Folder Links: DS75176B DS75176BT

DS75176B, DS75176BT

www.ti.com

SNLS381C –JULY 1998–REVISED APRIL 2013

REVISION HISTORY

Changes from Revision B (April 2013) to Revision C Page

• Changed layout of National Data Sheet to TI format ............................................................................................................ 6

Product Folder Links: DS75176B DS75176BT

PACKAGE OPTION ADDENDUM

www.ti.com 6-Oct-2017

Addendum-Page 1

PACKAGING INFORMATION

Orderable Device Status

(1)

Package Type Package

Drawing Pins Package

Qty Eco Plan

(2)

Lead/Ball Finish

(6)

MSL Peak Temp

(3)

Op Temp (°C) Device Marking

(4/5)

Samples

DS75176BM LIFEBUY SOIC D 8 95 TBD Call TI Call TI 0 to 70 DS751

76BM

DS75176BM/NOPB LIFEBUY SOIC D 8 95 Green (RoHS

& no Sb/Br) CU SN Level-1-260C-UNLIM 0 to 70 DS751

76BM

DS75176BMX LIFEBUY SOIC D 8 2500 TBD Call TI Call TI 0 to 70 DS751

76BM

DS75176BMX/NOPB LIFEBUY SOIC D 8 2500 Green (RoHS

& no Sb/Br) CU SN Level-1-260C-UNLIM 0 to 70 DS751

76BM

DS75176BN/NOPB LIFEBUY PDIP P 8 40 Green (RoHS

& no Sb/Br) CU SN Level-1-NA-UNLIM 0 to 70 DS75176BN

DS75176BTM LIFEBUY SOIC D 8 95 TBD Call TI Call TI -40 to 85 DS751

76BTM

DS75176BTM/NOPB LIFEBUY SOIC D 8 95 Green (RoHS

& no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 DS751

76BTM

DS75176BTMX LIFEBUY SOIC D 8 2500 TBD Call TI Call TI -40 to 85 DS751

76BTM

DS75176BTMX/NOPB LIFEBUY SOIC D 8 2500 Green (RoHS

& no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 DS751

76BTM

DS75176BTN/NOPB LIFEBUY PDIP P 8 40 Green (RoHS

& no Sb/Br) CU SN Level-1-NA-UNLIM -40 to 85 DS75176

BTN

(1) The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

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) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance

do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may

reference these types of products as "Pb-Free".

RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.

Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based

flame retardants must also meet the <=1000ppm threshold requirement.

(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

PACKAGE OPTION ADDENDUM

www.ti.com 6-Oct-2017

Addendum-Page 2

(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.

(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation

of the previous line and the two combined represent the entire Device Marking for that device.

(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish

value exceeds the maximum column width.

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