1FEATURES
2• FAILSAFE Receiver, RO = HIGH for:
– OPEN Inputs
– Terminated Inputs
– SHORTED Inputs
• Optimal for Use in SAE J1708 Interfaces
• Compatible with Popular Interface Standards:
– TIA/EIA-485 and TIA/EIA-422-A
– CCITT Recommendation V.11
• Bi-Directional Transceiver
– Designed for Multipoint Transmission
• Wide Bus Common Mode Range
– (−7V to +12V)
• Available in PDIP and SOIC Packages

DESCRIPTION
The DS36277 Dominant Mode Multipoint Transceiver
is designed for use on bi-directional differential
busses. It is optimal for use on Interfaces that utilize
Society of Automotive Engineers (SAE) J1708
Electrical Standard.
The device is similar to standard TIA/EIA-485
transceivers, but differs in enabling scheme. The
Driver's Input is normally externally tied LOW, thus
providing only two states: Active (LOW), or Disabled
(OFF). When the driver is active, the dominant mode
is LOW, conversely, when the driver is disabled, the
bus is pulled HIGH by external bias resistors.
The receiver provides a FAILSAFE feature that
ensures a known output state when the Interface is in
the following conditions: Floating Line, Idle Line (no
active drivers), and Line Fault Conditions (open or
short). The receiver output is HIGH for the following
conditions: Open Inputs, Terminated Inputs (50Ω), or
Shorted Inputs. FAILSAFE is a highly desirable
feature when the transceivers are used with
Asynchronous Controllers such as UARTs.