DS36276M

• Fail-proof receiver, reverse osmosis = high is:
• Enter Open Circuit
• Terminate the input
• Enter a short circuit
• Compatible with popular interface standards:
• TIA/EIA-485 (RS-485)
• TIA/EIA-422-A (RS-422-A).
• CCITT recommends 5.11
• Bidirectional transceivers
• Designed for multipoint transmission
• Independent driver inputs, driver enabled, enable receiver, receiver output and maximum flexibility
• Wide bus common-mode range
• (-7V to +12 V)
• Pin compatible: DS75176B, DS96176, DS3695 and SN75176A and B
• SOIC package available

illustrate

DS36276 use of a bidirectional differential bus on a fail-safe multipoint transceiver design. It is compatible with existing TIA/EIA-485 transceivers, however, it provides support for additional features that are not standard transceivers.

The fail-safe feature guarantees that the receiver outputs to a known state when the interface is in the following conditions: floating line, idle line (inactive driver), and line fault conditions (open or short). The receiver output is in high condition with the following conditions: open input, end input (50 ohms), and short input.

FailSafe is a desirable feature when used in transceivers, such as UART asynchronous controllers.