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TFDU5307
Vishay Semiconductors
Fast Low Profile (2.5 mm) Infrared Transceiver Module (MIR, 1.152 Mbit/s) for IrDA® Applications
Description
The TFDU5307 is an infrared transceiver module compliant to the latest IrDA physical layer standard, supporting IrDA speeds up to 1.152 Mbit/s (MIR) and carrier based remote control modes up to 2 MHz. Integrated within the transceiver module are 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 Vishay MIR transceiver is built in a low profile package using the experiences of the lead frame babyface technology. The transceivers are capable of directly interfacing with a wide variety of I/O devices, which perform the modulation/ demodulation function. At a minimum, a VCC bypass capacitor and a serial
resistor for current control are the only external components required implementing a complete solution. TFDU5307 has a tri-state output and is floating in shutdown mode with a weak pull-up.
Features
• Compliant to the latest IrDA physical layer specification (up to 1.152 Mbit/s) and TV Remote Control, bi-directional e3 operation included. • Sensitivity covers full IrDA range. Recommended operating range is from nose to nose to 70 cm • Operates from 2.7 V to 5.5 V within specification • Low power consumption (typ. 0.55 mA Supply current in receive mode, no signal) • Power shutdown mode (< 5 µA Shutdown Current in Full Temperature Range, up to 85 °C) • Surface mount package, low profile universal (L 8.5 mm x W 2.9 mm x H 2.5 mm) Capable of surface mount soldering to Side and top view orientation • Backward pin compatible to Vishay Semiconductors SIR and MIR infrared transceivers • High efficiency emitter • Directly interfaces with various super I/O and controller devices • Tri-state-receiver output, floating in shut down with a weak pull-up • Split power supply, transmitter and receiver can be operated from two power supplies with relaxed requirements saving costs, US Patent No. 6,157,476 • Logic voltage 1.5 V to 5.5 V is independent of IRED driver and analog supply voltage • Only one external component required • TV remote control supported • Transmitter intensity can be adjusted by an external resistor for extended range (> 0.7 m) or minimum low power (> 0.2 m) IrDA compliance. • Lead (Pb)-free device • Device in accordance to RoHS 2002/95/EC and WEEE 2002/96EC
Applications
• Telecommunication products (cellular phones, pagers) • Digital still and video cameras • Printers, fax machines, photocopiers, screen projectors • Low power consumption (typ. 0.55 mA Supply current in receive mode, no signal)
Document Number 82616 Rev. 1.5, 07-Apr-06
• Medical and industrial data collection • Notebook computers, desktop PCs, Palmtop Computers (Win CE, Palm PC), PDAs • Internet TV boxes, video conferencing systems • External infrared adapters (dongles) • Kiosks, POS, Point and Pay devices including IrFM - applications
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TFDU5307
Vishay Semiconductors Parts Table
Part TFDU5307-TR1 TFDU5307-TR3 TFDU5307-TT1 TFDU5307-TT3 Description Oriented in carrier tape for side view surface mounting Oriented in carrier tape for side view surface mounting Oriented in carrier tape for top view surface mounting Oriented in carrier tape for top view surface mounting 750 pcs 2500 pcs 750 pcs 2500 pcs Qty / Reel
Functional Block Diagram
Vlogic
Vcc1 Tri-State Driver Vcc2 RXD
Amplifier
Comparator
SD TXD
Logic &
Control
IRED Driver
IRED C GND
18509
Pin Description
Pin Number 1 2 3 Function IRED Anode IRED Cathode TXD Description Connect IRED anode to the VCC2 power supply through an external current limiting resistor. A separate unregulated power supply can be used at this pin. IRED Cathode, internally connected to the driver transistor This Schmitt-Trigger input is used to transmit serial data when SD is low. An onchip protection circuit disables the LED driver if the TXD pin is asserted for longer than 80 μs. When used in conjunction with the SD pin, this pin is also used to control receiver output pulse duration. The input threshold voltage adapts to and follows the logic voltage reference applied to the Vlogic pin (pin 7). Received Data Output, push-pull CMOS driver output capable of driving standard CMOS or TTL loads. No external pull-up or pull-down resistor is required. Floating with a weak pull-up of 500 kΩ (typ.) in shutdown mode. The voltage swing is defined by the applied Vlogic voltage Shutdown. Also used for setting the output pulse duration. Setting this pin active for more than 1.5 ms places the module into shutdown mode. Before that (t < 0.7 ms) on the falling edge of this signal, the state of the TXD pin is sampled and used to set the receiver output to long pulse duration (2 µs) or to short pulse duration (0.4 μs) mode. The input threshold voltage adapts to and follows the logic voltage reference applied to the Vlogic pin (pin 7). Supply Voltage Vlogic defi.