TFDU4300

• Compliant to the latest IrDA physical layer specification (9.6 kbit/s to 115.2 kbit/s) and TV Remote Control, bi-directional operation included.
• Operates from 2.4 V to 5.5 V within specification over full temperature range from - 30 °C to + 85 °C
• Logic voltage 1.5 V to 5.5 V is independent of IRED driver and analog supply voltage
• Split power supply, transmitter and receiver can be operated from two power supplies with relaxed require ents saving costs, US Patent No. 6,157,476
• Extended IrDA Low Power Range to about 70 cm
• Typical Remote Control Range 12 m
• Low Power Consumption (< 0.12 mA Supply Current)
• Power Shutdown Mode (< 5 A Shutdown Current in Full Temperature Range, up to 85 °C)
• Surface Mount Package, low profile (2.5 mm) - (L 8.5 mm * H 2.5 mm * W 2.9 mm)
• High Efficiency Emitter
• Low Profile (Universal) Package Capable of Surface Mount Soldering to Side and Top View Orientation
• Directly Interfaces with Various Super I/O and Controller Devices as e.g. TOIM4232
• Tri-state-Receiver Output, floating in shut down with a weak pull-up
• Compliant with IrDA Background Light Specification
• EMI Immunity in GSM Bands > 300 V/m verified

The TFDU4300 is a low profile (2.5 mm) infraredtransceiver module with independent logic reference voltage (V_logic) for low voltage IO interfacing. It is compliant to the latest IrDA physical layer standard for fast infrared data communication, supporting IrDA speeds up to 115.2 kbit/s (SIR) and carrier based remote control. The transceiver module consists of a PIN photodiode, an infrared emitter (IRED), and a low-power control IC to provide a total front-end solution in a single package. This device covers an extended IrDA low power range of close to 1 m. With an external current control resistor the current can be adjusted for shorter ranges.

This Vishay SIR transceiver is built in a new smaller package using the experiences of the lead frame BabyFace technology.

The Rxd output pulse width is independent of the optical input pulse width and stays always at a fixed pulse width thus making the device optimum for standard Endecs. TFDU4300 has a tri-state output and is floating in shut-down mode with a weak pull-up.