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Key Specifications
Product Description The UM13430DA is a 3.0V to 5.5V RS-485 transceiver designed to meet the increasing system requirements found in today’s communication, infrastructure and industrial equipment environments. This is a wide supply (3.0V to 5.5V) device that operates at maximum data rate of 10 Mbps and features a 1.65V to 5.5V I/O logic supply, simplifying multi-voltage system interfacing requirements.
The receiver includes full fail-safe circuitry, guaranteeing a logic-high receiver output when the receiver inputs are open, shorted or floating. The UM13430DA receiver input impedance is at least 96kΩ (1/8 unit load), allowing more than 256 devices on the bus.
The driver is protected by short circuit detection as well as thermal shutdown and maintains high impedance in shutdown or when powered off. The UM13430DA does not have slew limiting and is intended for high-speed applications requiring data rates up to 10Mbps.
The chip can enter a 1μA low current shutdown mode for extreme power savings.
The UM13430DA is a half-duplex device that operates at max data rates of 10Mbps. It is available in a 10-pin DFN package.
Features
- Wide 3.0V to 5.5V supply operation
-1.65V to 5.5V I/O logic interface VL pin
- Max data rate of 10Mbps
- 1/8 unit load, up to 256 receivers
- Robust ESD protection for RS-485 bus pins
- Driver short circuit limit and thermal shutdown for overload protection
- -40°C to 85°C operating temperature range
- Lead-free (RoHS 6) DFNTypical Application Circuits
 Applications
- Telecom Infrastructure
- High Speed data links
- Low Voltage μC Communications
- Industrial control equipment
- Building security and automationPin Configurations
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