SN65HVD485E_17 Datasheet, PDF (1/29 Pages) Texas Instruments – Half-Duplex RS-485 Transceiver

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SN65HVD485E
SLLS612E – JUNE 2004 – REVISED DECEMBER 2015
SN65HVD485E Half-Duplex RS-485 Transceiver
1 Features
•1 Bus-Pin ESD Protection up to 15 kV
• 1/2 Unit Load: up to 64 Nodes on a Bus
• Bus-Open-Failsafe Receiver
• Glitch-Free Power-Up and Power-Down Bus
Inputs and Outputs
• Available in Small VSSOP-8 Package
• Meets or Exceeds the Requirements of the
TIA/EIA-485A Standard
• Industry-Standard SN75176 Footprint
2 Applications
• Motor Control
• Power Inverters
• Industrial Automation
• Building Automation Networks
• Industrial Process Control
• Battery-Powered Applications
• Telecommunications Equipment
3 Description
The SN65HVD485E device is a half-duplex
transceiver designed for RS-485 data bus networks.
Powered by a 5-V supply, it is fully compliant with the
TIA/EIA-485A standard. This device is suitable for
data transmission up to 10 Mbps over long twisted-
pair cables and is designed to operate with very low
supply current, typically less than 2 mA, exclusive of
the load. When the device is in the inactive shutdown
mode, the supply current drops below 1 mA.
The wide common-mode range and high ESD
protection levels of this device make it suitable for
demanding applications such as: electrical inverters,
status/command signals across telecom racks,
cabled chassis interconnects, and industrial
automation networks where noise tolerance is
essential. The SN65HVD485E device matches the
industry-standard footprint of the SN75176 device.
Power-on reset circuits keep the outputs in a high-
impedance state until the supply voltage has
stabilized. A thermal-shutdown function protects the
device from damage due to system-fault conditions.
The SN65HVD485E device is characterized for
operation from –40°C to 85°C air temperature.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.91 mm × 3.90 mm
SN65HVD485E
VSSOP (8)
3.00 mm × 3.00 mm
PDIP (8)
9.81 mm × 6.35 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
R
R
RE
DE
DD
A
B ^RT
AB
AB
A
R_{T B}
R
R
RE
DE
DD
R
D
R RE DE D
R
D
R RE DE D
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.