The miniaturized TFDU4202 is an ideal transceiver for applications in telecommunications like mobile phones and pagers. The device is mechanically designed for lowest profile with a height of only 2.8 mm. The infrared transceiver is compatible to the latest IrDA® IrPHY specification up to a data rate of 115 kbit/s. At lower operating voltages up to 3.3 V the transceiver can be operated without external current limiting resistor to achieve a range > 1 m. The added feature is a split power supply for IRED driver (Vccp) and ASIC (Vccp). For operating only in the limited distance, low power range (20 cm/ 30 cm), TFDU4201 with built-in current control is recommended. For this device see the appropriate data sheet.
The TFDU4202 is a miniaturized, low‑profile infrared transceiver designed for telecom applications such as mobile phones, pagers, PDAs and handheld equipment. It complies with the IrDA IrPHY standard and offers a typical transmission range of up to 8 m.
The document lists mechanical dimensions, electrical ratings, optical characteristics, recommended application circuits, and handling guidelines, including power‑supply recommendations, shutdown operation, and solder‑profile specifications.
| Package dimensions | L7.1 mm × W4.7 mm × H2.8 mm |
|---|---|
| Supply voltage range | 2.4 V to 5.5 V (down to 2.0 V operation) |
| Maximum data rate | 115.2 kbit/s |
| Peak emission wavelength | 850‑900 nm |
The device operates from 2.4 V to 5.5 V and can function down to 2.0 V in low‑power mode.
It supports data rates up to 115.2 kbit/s according to the IrDA IrPHY specification.
The device can be disabled by pulling the Vpp pin (pin 8) low; the RXD output then floats and the TXD input becomes high‑impedance.