LTC2873IUFD#TRPBF

LTC2873IUFD#TRPBF is a single-bus transceiver with switchable termination. It is a robust pin-configurable multiprotocol transceiver that supports RS232, RS485, and RS422 protocols while operating on a single 3V to 5.5V supply. This can be configured as a half-duplex RS485 transceiver or as an RS232 transceiver using the same two bus pins. A pin-controlled integrated termination resistor allows for easy interface reconfiguration, eliminating external resistors and control relays. Loopback mode steers the driver inputs to the receiver outputs for diagnostic self-test. The RS485 receiver supports up to 256 nodes per bus, and features full failsafe operation for floating, shorted or terminated inputs. Applications include software selectable RS232/RS485/RS422 interface, industrial sensors and actuators, alarm systems, traffic control and monitoring, highway signs and jumbo displays.

• High ESD: ±26kV HBM, logic loopback mode
• 1.7V to 5.5V logic interface
• RS485 receiver failsafe eliminates UART lockup
• VCC supply current in shutdown mode is 8µA typ at active-low SHDN=0V
• Maximum data rate is 20Mbps
• Common mode output voltage is 3V maximum at RL=27ohm or 50 ohm
• Maximum short-circuit current is ±250mA max at -7V ≤ VOUT ≤ 12V
• Driver slew rate is 2V/µs typ at RL=3kohm, CL=2.5nF, (fast, slow modes)
• 24-lead (4mm × 5mm) plastic QFN package
• Operating temperature range from -40°C to 85°C

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