SN65HVD21A
www.ti.com SLLSE36 – DECEMBER 2010 6 Mbps, Extended Common-Mode RS-485 Transceiver
Check for Samples: SN65HVD21A FEATURES 1 DESCRIPTION Common-Mode Voltage Range (–20 V to 25 V)
More Than Doubles TIA/EIA-485 Requirement
Reduced Unit-Load for up to 256 Nodes
Bus I/O Protection to Over 16-kV HBM
Failsafe Receiver for Open-Circuit,
Short-Circuit and Idle-Bus Conditions
Low Standby Supply Current 1-ВµA Max
More Than 100 mV Receiver Hysteresis The SN65HVD21A offers performance far exceeding
typical RS-485 devices. In addition to meeting all
requirements of the TIA/EIA-485-A standard, the
device operates over an extended range of
common-mode voltage, and has features such as
high ESD protection, wide receiver hysteresis, and
failsafe operation. This device is ideally suited for
long-cable networks, and other applications where
the environment is too harsh for ordinary
transceivers. APPLICATIONS The device is designed for bidirectional data
transmission on multipoint twisted-pair cables.
Example applications are digital motor controllers,
remote sensors and terminals, industrial process
control, security stations, and environmental control …
