DS75176B Datasheet, PDF (1/14 Pages) National Semiconductor (TI) – Multipoint RS-485/RS-422 Transceivers

DS75176B, DS75176BT
www.ti.com
SNLS381C – JULY 1998 – REVISED APRIL 2013
DS75176B/DS75176BT Multipoint RS-485/RS-422 Transceivers
Check for Samples: DS75176B, DS75176BT
FEATURES
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•23 Meets EIA Standard RS485 for Multipoint Bus
Transmission and is Compatible with RS-422.
• Small Outline (SOIC) Package Option Available
for Minimum Board Space.
• 22 ns Driver Propagation Delays.
• Single +5V Supply.
• −7V to +12V Bus Common Mode Range
Permits ±7V Ground Difference Between
Devices on the Bus.
• Thermal Shutdown Protection.
• High Impedance to Bus with Driver in TRI-
STATE or with Power Off, Over the Entire
Common Mode Range Allows the Unused
Devices on the Bus to be Powered Down.
• 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.
DESCRIPTION
The DS75176B is a high speed differential TRI-
STATE^®bus/line transceiver designed to meet the
requirements of EIA standard RS485 with extended
common mode range (+12V to −7V), for multipoint
data transmission. In addition, it is compatible with
RS-422.
The driver and receiver outputs feature TRI-STATE
capability, for the driver outputs over the entire
common mode range of +12V to −7V. Bus contention
or fault situations that cause excessive power
dissipation within the device are handled by a thermal
shutdown circuit, which forces the driver outputs into
the high impedance state.
DC specifications are guaranteed over the 0 to 70°C
temperature and 4.75V to 5.25V supply voltage
range.
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.
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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.
TRI-STATE is a registered trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
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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.
Copyright © 1998–2013, Texas Instruments Incorporated