LTC1334IG#TRPBF

LTC1334IG#TRPBF is a low-power CMOS bidirectional transceiver featuring two reconfigurable interface ports. It can be configured as two RS485 differential ports, as two dual RS232 single-ended ports or as one RS485 differential port and one dual RS232 single-ended port. An onboard charge pump requires four 0.1µF capacitors to generate boosted positive and negative supplies, allowing the RS232 drivers to meet the RS232 ±5V output swing requirement with only a single 5V supply. A shutdown mode reduces the ICC supply current to 10µA. The RS232 transceivers are in full compliance with RS232 specifications. The RS485 transceivers are in full compliance with RS485 and RS422 specifications. All interface drivers feature short-circuit and thermal shutdown protection. Applications include low power RS485/RS422/RS232/EIA562 interface, software-selectable multiprotocol interface port, cable repeaters, level translators.

• Four RS232 transceivers or two RS485 transceivers on one chip
• Operates from a single 5V supply
• Withstands repeated ±10kV ESD pulses
• Uses small charge pump capacitors: 0.1µF
• VCC supply current is 8mA typical at (no load, SEL1 = SEL2 = high)
• Input current is ±10µA maximum at (D, SEL1, SEL2)
• Self-testing capability in loopback mode, power-up/down glitch-free outputs
• Driver maintains high impedance in three-state, shutdown or with power off
• Thermal shutdown protection, receiver inputs can withstand ±25V
• 28 lead plastic SSOP package, industrial operating temperature range from -40°C to 85°C