
VISHAY
TFDU6108
Vishay Semiconductors
Document Number 82537
Rev. 1.6, 25-Jun-04
www.vishay.com
1
18102
Fast Infrared Transceiver Module (4 Mbit/s), IrDA
Serial
Interface Compatible, 2.7 V to 5.5 V Supply Voltage Range
Description
The TFDU6108 is an infrared transceiver module
compliant to the latest IrDA standard for fast infrared
data communication, supporting IrDA speeds up to
4.0 Mbit/s (FIR), 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 CMOS control IC to provide
a total front-end solution in a single package.
These FIR transceivers with an integrated serial inter-
face are compliant with the IrDA "Serial Interface
Standard for Transceiver Control". 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 V
CC
bypass
capacitor is the only external component required
implementing a complete solution. For limiting the
transceiver internal power dissipation one additional
resistor might be added. The transceiver can be oper-
ated with logic I/O voltages as low as 1.5 V.
New Features
The functionality of the device is similar to the
TFDU6102 series. The IrDA compatible serial
interface function is replacing the former program-
ming method, guaranteeing a perfect IrDA stan-
dardized and compliant programmability. The
IRED current is programmable to different levels,
no external current limiting resistor is necessary.
Features
Compliant to the latest IrDA physical layer specifi-
cation (Up to 4 Mbit/s) TV Remote Control
Compliant to the IrDA "Serial Interface Specifica-
tion for Transceivers"
For 3.0 V and 5.0 V Applications, fully specified
2.7 V to 5.5 V Operational down to 2.6 V
Compliant to all logic levels between 1.5 V and 5 V
Low Power Consumption
(typ. 2.0 mA Supply Current)
Power Shutdown Mode
(< 1
μ
A Shutdown Current)
Surface Mount Package Options
- Universal (L 9.7 mm × W 4.7 mm × H 4.0 mm)
- Side and Top View
Tri-State-Receiver Output, Weak Pull-up when in
Shutdown Mode
High Efficiency Emitter
Baby Face (Universal) Package Capable of
Surface Mount Soldering to Side and Top
View Orientation
Eye safety class 1 (IEC60825-1, ed. 2001), limited
LED on-time, LED current is controlled, no single
fault to be considered
Built - In EMI Protection including GSM bands.
EMI Immunity in GSM Bands > 300 V/m verified
No External Shielding Necessary
Few External Components Required
Pin to Pin Compatible to Legacy Vishay Semicon-
ductor SIR and FIR Infrared Transceivers
Split power supply, transmitter and receiver can be
operated from two power supplies with relaxed
requirements saving costs, US Patent No.
6,157,476
Compliant with IrDA EMI and Background Light
Specification
Applications
Notebook Computers, Desktop PCs, Palmtop
Computers (Win CE, Palm PC), PDAs
Printers, Fax Machines, Photocopiers,
Screen Projectors
Telecommunication Products
(Cellular Phones, Pagers)
Internet TV Boxes, Video Conferencing Systems
External Infrared Adapters (Dongles)
Medical and Industrial Data Collection Devices