ISL3332IAZ

The ISL3332 is two port interface ICs where eachport can be independently configured as a singleRS-485/422 transceiver, or as a dual (2 Tx, 2 Rx) RS-232transceiver. With both ports set to the same mode, twoRS-485/RS-422 transceivers, or four RS-232 transceiversare available. If either port is in RS-232 mode, the onboard charge pumpgenerates RS-232 compliant ±5V Tx output levels from asingle VCC supply as low as 3.15V. The transceivers areRS-232 compliant, with the Rx inputs handling up to ±25V.

• ±15kV (HBM) ESD Protected Bus Pins (RS-232 or RS-485)
• Operates From a Single 3.3V Supply
• Two Independent Ports, Each User Selectable for RS-232 (2 Transceivers) or RS-485/RS-422 (1 Transceiver)
• True Flow-Through Pinouts Simplify Board Layouts
• Pb-free (RoHS compliant)
• Full Failsafe (Open/Short) Rx in RS-485/422 Mode
• Loopback Mode Facilitates Board Self Test Functions
• User Selectable RS-485 Data Rates (ISL3333 Only)
  • Fast Speed is 20Mbps
  • Slew Rate Limited is 460kbps
  • Slew Rate Limited is 115kbps
• Fast RS-232 Data Rate is Up to 400kbps
• RS-232 Tx and Rx Enable Pins (ISL3333 Only)
• Small Charge Pump Caps is 4 x 0.1µF
• Low Current Shutdown Mode is 35µA
• QFN Package Saves Board Space (ISL3333 Only)
• Logic Supply Pin (VL) Eases Operation in Mixed Supply Systems (ISL3333 Only)