IBM31T1100A

IBM31T1100A Integrated Infrared Transceiver Module Highlights x IrDA 1.1, HP-SIR and Sharp ASK compliant x Supports IrDA data rates up to 4 Mbps x Low profile (height = 5.6 mm max.) x Minimum external components x On-chip LED protection circuit x Low power consumption x 5 V Supply Voltage x Complete differential receiver design x Ambient light and noise rejection circuitry x Shutdown pin for power management x Programmable bandwidth control x Compatible with all major Super I/Os General Description The IBM31T1100A is a multi-mode integrated infrared (IR) transceiver module for data communication systems. The transceiver supports IrDA speeds up to 4 Mbps, HP-SIR and Sharp ASK modes. Integrated into this tiny package is a photodiode, LED and analog transceiver ASIC to provide a total solution in a single package. A current limiting resistor in series with the LED and a Vcc bypass capacitor are the only external components required to implement a complete transceiver. Package Vcc 3 Noise Rejection Circuit + Amp Comp Driver 2 RX Vcc - 8 SD/BW TX 6 7 Control logic BW SD LEDA Driver 1 LEDC 4 GND Block Diagram IBM31T1100A Pin Assignments and Descriptions LEDA 8 TX 7 SD/BW 6 NC 5 LED Photodiode 1 2 3 4 LEDC RX V CC GND Pin 1 2 Pin Name LEDC RX Description Indicates the state of the internal LED cathode. Normally not connected. Indicates received serial data. It is a push-pull CMOS driver capable of driving a standard CMOS or TTL load. No external pull...