DESCRIPTION
The TFBS4711 is a low profile, infrared data transceiver module. It supports IrDA® data rates up to 115.2 kbit/s (SIR). The transceiver module consists of a PIN photodiode, an infrared emitter (IRED), and a low-power CMOS control IC to provide a total front-end solution in a single package.
The device is designed for the low power IrDA standard with an extended range on-axis up to 1 m. 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. TFBS4711 has a tri-state output and is floating in shut-down mode with a weak pull-up. The shut down (SD) feature cuts current consumption to typically 10 nA.

FEATURES
• Compliant with the latest IrDA physical layer low
   power specification (9.6 kbit/s to 115.2 kbit/s)
• Small package (H x L x W in mm): 1.9 x 3 x 6
• Typical link distance on-axis up to 1 m
• Battery and power management features:
   > Idle current - 70 µA typical
   > Shutdown current - 10 nA typical
   > Operates from 2.4 V to 5.5 V within specification over full
      temperature range from - 25 °C to + 85 °C
• Remote control - transmit distance up to 8 m
• Tri-state receiver output, floating in shutdown with a weak
   pull-up
• Constant RXD output pulse width (2.2 µs typical)
• Meets IrFM fast connection requirements
• Split power supply, an independent, unregulated supply for
   IRED anode and a well regulated supply for VCC
• Directly interfaces with various super I/O and controller
   devices and encoder/decoder such as TOIM4232 or
   TOIM5232
• Qualified for lead (Pb)-free and Sn/Pb processing (MSL4)
• Compliant to RoHS directive 2002/95/EC and in
   accordance to WEEE 2002/96/EC

APPLICATIONS
• Ideal for battery operated devices
• PDAs
• Mobile phones
• Electronic wallet (IrFM)
• Notebook computers
• Digital still and video cameras
• Printers, fax machines, photocopiers, screen projectors
• Data loggers
• External infrared adapters (dongles)
• Diagnostics systems
• Medical and industrial data collection devices
• Kiosks, POS, point and pay devices
• GPS
• Access control
• Field programming devices