ISL41334IRZ-T

ISL41334IRZ-T is a two-port interface IC in which each port can be independently configured as a single RS-485, RS-422 transceiver, or as a dual (2 Tx, 2 Rx) RS-232 transceiver. With both ports set to the same mode, two RS-485, RS-422 transceivers, or four RS-232 transceivers are available. If either port is in RS-232 mode, the onboard charge pump generates RS-232 compliant ±5V Tx output levels from a single VCC supply as low as 4.5V. Four small 0.1µF capacitors are required for the charge pump. The transceivers are RS-232 compliant, with the Rx inputs handling up to ±25V, and the Tx outputs handling ±12V. Applications include gaming applications (such as slot machines), single board computers, factory automation, security networks, industrial/process control networks, level translators, such as RS-232 to RS-422, point of sale equipment, and dual channel RS-485 interfaces.

• 2-ports, 20M, 460k, 115kbps RS-485 data rate
• 650kbps RS-232 data rate, VL pin, low power shutdown
• ±15kV (HBM) ESD protected bus pins (RS-232 or RS-485)
• Single 5V (10% tolerance) supply, flow-through pinouts simplify board layouts
• Large (2.7V) differential VOUT for improved noise immunity in RS-485, RS-422 networks
• Full fail-safe (open/short) Rx in RS-485, RS-422 mode
• Loopback mode facilitates board self-test functions
• Logic supply pin (VL) eases operation in mixed supply systems
• Operating temperature range from -40°C to +85°C
• 40-lead QFN package