IrDA infrared transceiver modules extend battery life with ultra-low idle current
The TF family of infrared (IR) transceiver modules from Vishay comply with the latest IrDA physical layer specification, and offer data rates up to 115.2 kbits/s at a link distance of 1 m.
Vishay offers an interesting solution for IrDA communications with the TF family of infrared transceiver modules. Each transceiver integrates a PIN photodiode and an IR emitter at each end of the longer side, and a low-power control IC. The TF transceivers comply with the latest IrDA physical layer specification, and are backwards-compatible with previous versions.
The TF family’s use of the latest chip technologies assures manufacturers of the long-term availability of Vishay IR transceiver products.
The idle current drawn by the TF transceivers is less than 70 μA, and this is reduced to less than 1 μA in shutdown mode for long battery life in handheld devices. For repetitive pulse operation, current increases to up to 430 mA for a pulse duration of less than 90 μs with a duty cycle of less than 20%.
Vishay produces the TF family of IR transceiver modules in several form factors to suit different installation requirements.
| Part Number | Height (mm) | Length (mm) | Width (mm) |
| TFDU4301 | 3.1 | 8.5 | 2.5 |
| TFDU4101 | 4.0 | 9.7 | 4.7 |
| TFBS4711 | 1.9 | 6.0 | 3.0 |
| TFBS4652 | 1.6 | 6.8 | 2.8 |
| TFBS4650 | 1.6 | 6.8 | 2.8 |