Fast Infrared Transceiver Module Family
(FIR, 4 Mbit/s) for 2.6 V to 5.5 V Operation
Description
The TFDU6102E, TFDS6402, TFDS6502E,
TFDT6502E are a family of low–power infrared
transceiver modules compliant to the IrDA physical
layer standard for fast infrared data communication,
supporting IrDA speeds up to 4.0 Mbit/s (FIR),
HP-SIR, Sharp ASK and carrier based remote control
modes up to 2 MHz. Integrated within the transceiver
modules are a photo PIN diode, an infrared emitter
(IRED), and a low–power CMOS control IC to provide
a total front–end solution in a single package.
Vishay Telefunken’s FIR transceivers are available in
four package options, including our Baby Face
package (TFDU610xE), the standard setting, once
smallest FIR transceiver available on the market. This
wide selection provides flexibility for a variety of
applications and space constraints. The transceivers
are capable of directly interfacing with a wide variety
of I/O devices which perform the modulation/
demodulation function, including National
Semiconductor’s PC87338, PC87108 and PC87109,
SMC’s FDC37C669, FDC37N769 and CAM35C44,
and Hitachi’s SH3. At a minimum, a current–limiting
resistor in series with the infrared emitter and a
VCC bypass capacitor are the only external
components required implementing a complete
solution.
Vishay Semiconductor
Features
Compliant to the IrDA physical layer specification
(Up to 4 Mbit/s),
HP–SIR, Sharp ASK and TV Remote Control
For 3.0 V and 5.0 V Applications
Operates from 2.6 V to 5.5 V within specification,
operational down to 2.4 V
Low Power Consumption (3 mA Supply Current)
Power Shutdown Mode (1 A Shutdown Current)
Four Surface Mount Package Options
Digital Still and Video Cameras
Printers, Fax Machines, Photocopiers,
Screen Projectors
High Efficiency Emitter
Baby Face (Universal) Package Capable of
Surface Mount Soldering to Side and Top View
Orientation
Directly Interfaces with Various Super I/O and
Controller Devices
Built–In EMI Protection – No External Shielding
Necessary
Few External Components Required
Backward Pin to Pin Compatible to all Vishay
Telefunken SIR and FIR Infrared Transceivers
Split power supply , transmitter and receiver can be
operated from two power supplies with relaxed
requirements, thus saving costs
Telecommunication Products
(Cellular Phones, Pagers)
Internet TV Boxes, Video Conferencing Systems
External Infrared Adapters (Dongles)
Medical and Industrial Data Collection Devices
Document Number 82526
Rev. B1.6, 02–Nov–001
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TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductor
Package Options
TFDU6102E
Baby Face (Universal)
weight 0.20 g
TFDS6402
Dracula Side View
weight 0.30 g
TFDS6502E
Side View
weight 0.39 g
TFDT6502E
Top View
weight 0.39 g
Ordering Information
Part NumberQty / ReelDescription
TFDU6102E–TR31000 pcsOriented in carrier tape for side view surface mounting
TFDU6102E–TT31000 pcsOriented in carrier tape for top view surface mounting
TFDS6402–TR31000 pcsSide View
TFDS6502E–TR3750 pcsSide View
TFDT6502E–TR3750 pcsTop View
Functional Block Diagram
Amplifier
SD/Mode
Txd
AGC
Logic
Open Drain Driver
V
CC
Comparator
GND
Figure 1. Functional Block Diagram
Driver
Rxd
IRED Anode
IRED Cathode
www.vishay.comDocument Number 82526
Rev. B1.6, 02–Nov–002
TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Function
Descrition
I/O
Active
Pin Description
Pin NumberFunctionDescriptionI/OActive
“U” and “T” Option“S” Option
18IRED AnodeIRED anode, to be externally connected
21IRED Cathode IRED cathode, internally connected to
37TxdTransmit Data InputIHIGH
42RxdReceived Data Output, push-pull CMOS
56SD/ModeShutdown/ ModeIHIGH
63V
75ModeHIGH: High speed mode;
84GNDGround
CC
Vishay Semiconductor
to V
through a current control resistor.
CC
This pin is allowed to be supplied from
an uncontrolled power supply separated
from the controlled V
driver transistor
driver output capable of driving a standard CMOS or TTL load. No external
pull-up or pull-down resistor is required.
Pin is floating when
device is in shutdown mode
Supply Voltage
LOW: Low speed mode, SIR only
(see chapter “Mode Switching”)
supply
CC
OLOW
I
“U” Option Baby Face (Universal)
and Dracula
IREDDetector
14885
“S” Option Side View“T” Option Top View
IREDDetector
IREDDetector
Figure 2. Pinnings
Document Number 82526
Rev. B1.6, 02–Nov–003
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TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductor
Absolute Maximum Ratings
Reference point Pin: GND unless otherwise noted.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
ParametersTest ConditionsSymbolMin.Typ.Max.Unit
Supply Voltage Range,
Transceiver
Supply Voltage Range,
Transmitter
Input CurrentsFor all Pins, Except IRED
Output Sinking Current25mA
Power DissipationSee Derating CurveP
Junction TemperatureT
Ambient Temperature
Range (Operating)
Storage Temperature
Range
Soldering TemperatureSee Recommended Solder
Average Output CurrentI
Repetitive Pulsed Output
Current
IRED Anode VoltageV
Transmitter Data Input
Voltage
Receiver Data Output
Voltage
Virtual Source SizeMethod:
Maximum Intensity for
Class 1 Operation of
IEC825–1 or EN60825–1
(worst case IrDA FIR
pulse pattern)
0 V <V
0 V <V
<6 VV
CC2
<6 VV
CC1
Anode Pin
Profile (see Figure 11)
<90 µs, ton <20%I
(1–1/e) encircled energy
EN60825, 1997,
unidirectional operation,
worst case test mode
CC1
CC2
– 0.56V
– 0.56V
10mA
350mW
125°C
T
amb
T
stg
D
J
–25+85°C
–25+85°C
240°C
(DC)130mA
IRED
(RP)600mA
IRED
IREDA
V
Txd
V
Rxd
– 0.56V
– 0.5V
– 0.5V
+0.5V
CC1
+0.5V
CC1
d2.52.8mm
320mW/sr
www.vishay.comDocument Number 82526
Rev. B1.6, 02–Nov–004
TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Mode Floating,
InutVoltageHigh
Vishay Semiconductor
Electrical Characteristics
T
= 25_C, VCC = 2.6V to 5.5 V unless otherwise noted.
amb
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Txd = Low, SD = High,
(Receiver is inactive as long as
SD = High) R1= 7.2 Ω
Output Radiant Intensity,
a±24°
Angle of Half Intensity
Peak – Emission
l
P
880900nm
Wavelength
Optical Output Pulse
Duration
Input pulse width 217 ns,
1.152 Mbit/s
Input pulse width 125 ns,
t
opt
t
opt
207217227ns
117125133ns
4 Mbit/s
Input pulse width 250 ns,
t
opt
242250258ns
4 Mbit/s
Input pulse width t < 80 µs
t
opt
Input pulse width t ≥ 80 µs
Optical Rise Time,
Fall Time
t
ropt
t
fopt
,
1040ns
Optical Overshoot10%
0.40.55A
0.04mW/sr
t
80
µs
*)R1: control series resistor for current limitation
Document Number 82526
Rev. B1.6, 02–Nov–007
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TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductor
Recommended Circuit Diagram
The only required component for designing an
IrDA 1.3 solution using Vishay Telefunken
transceivers is a current limiting resistor, R1, to the
IRED. However, depending on the entire system
design and board layout, additional components may
be required (see figure 3).
V
CC2
V
CC1
Rxd
GND
SD/Mode
Txd
Figure 3. Recommended Application Circuit
R1
R2
IRED
Cathode
Rxd
IRED
Anode
Txd
TFDx6x0xE
C2C1
Note: outlined components are optional depending
on the quality of the power supply
Vcc
GND
SD/Mode
Mode
Vishay Telefunken transceivers integrate a sensitive
receiver and a built-in power driver. The combination
of both needs a careful circuit board layout. The use of
thin, long, resistive and inductive wiring should be
avoided. The inputs (Txd, SD/ Mode) and the output
Rxd should be directly (DC) coupled to the I/O circuit.
R1 is used for controlling the current through the
IR emitter. For increasing the output power of the
IRED, the value of the resistor should be reduced.
Similarly , to reduce the output power of the IRED, the
value of the resistor should be increased. For typical
values of R1 see figure 4. For IrDA compliant
operation, a current control resistor of 7.2 Ω is
recommended. For compensating losses of the cosmetic window, reducing that value to 5.6 Ω is
acceptable. The upper drive current limitation is
dependent on the duty cycle and is given by the
absolute maximum ratings on the data sheet.
R2, C1 and C2 are optional and dependent on the
quality of the supply voltage V
and injected noise.
CC
An unstable power supply with dropping voltage during
transmission may reduce sensitivity (and transmission
range) of the transceiver.
The placement of these parts is critical. It is strongly
recommended to position C2 as near as possible to the
transceiver power supply pins. An electrolytic
capacitor should be used for C1 while a ceramic
capacitor is used for C2.
C14.7 mF, Tantalum293D 475X9 016B 2T
C20.1 µF, CeramicVJ 1206 Y 104 J XXMT
R15 V supply voltage: 7.2 Ω , 0.25 W
(recommend using
two 3.6 W, 0.125 W resistors in series)
CRCW–1206–3R60–F–RT1
3.3 V supply voltage: 3.6 Ω , 0.25 W
(recommend using
two 1.8 W, 0.125 W resistors in series)
CRCW–1206–1R80–F–RT1
R247 Ω , 0.125 WCRCW–1206–47R0–F–RT1
www.vishay.comDocument Number 82526
Rev. B1.6, 02–Nov–008
TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductor
500
5.25V
5.0V
400
300
200
Intensity (mW/sr)
100
0
5.0V
Vcc=4.75V
min. intensity in emission cone 15°
0246810121416
Current Control Resistor ( W )14379
max. intensity in
emission cone 15°
min. R
max.R
dson
dson
, min. V
, max.V
F
F
Figure 4. Intensity Ie vs. Current Control Resistor R1,
5 V Applications
700
3.6V
600
500
400
3.3V
300
200
Intensity (mW/sr)
100
0
024681012
3.3V
Vcc=3.0V
Current Control Resistor ( W )15111
max. intensity in
emission cone 15°
min. R
min. intensity in
emission cone 15°
max. R
dson
dson
, min. V
, max. V
F
F
Figure 5. Intensity Ie vs. Current Control Resistor R1,
3 V Applications
In addition, when connecting the described circuit to
the power supply, low impedance wiring should be
used.
I/O and Software
drivers are available from SMSC and Vishay
Semiconductor GmbH. This software is intended to
work with Windows 95, too. Alternatively the
HP/ Sharp settings can be selected. The Microsoft
Operating Systems NT 5.0
Beta 2 and
Windows 2000provide Miniport device drivers.
Mode Switching
The TFDU6102E, TFDS6402, TFDS6502E and
TFDT6502E do not power on with a default mode,
therefore the data transfer rate has to be set by a programming sequence using the Txd and SD/ Mode
inputs as described below or selected by setting the
Mode Pin. The Mode Pin can be used to statically set
the mode (Mode Pin: LOW: SIR, HIGH: 0.576 Mbit/s
to 4.0 Mbit/s). When using the Mode Pin, the standby
current may increase to about 50 to 60 mA when high
or low. If not used or in standby mode, the mode input
should float to minimize standby current. The low
frequency mode covers speeds up to 1 15.2 kbit/s. Signals with higher data rates should be detected in the
high frequency mode. Lower frequency data can also
be received in the high frequency mode but with reduced sensitivity. To switch the transceivers from low
frequency mode to the high frequency mode and vice
versa, the programming sequences described below
are required.
SD/Mode
Txd
50%
Figure 6. Mode Switching Timing Diagram
Setting to the High Bandwidth Mode
(0.576 Mbit/s to 4.0 Mbit/s)
50%
t
t
s
h
High : FIR
50%
Low : SIR
14873
In the description, already different I/Os are
mentioned. Differnt combinations are tested and the
function verified with the special drivers available from
the I/O suppliers. In special cases refer to the I/O
manual, the Vishay application notes, or contact
directly Vishay Sales, Marketing or Application.
Control: Differences to TFDx6000 Series
For applications using I/Os from NSC, Winbond and TI
no software upgrade is necessary . In combination with
the latest SMSC controllers for Microsoft
Windows 98a software upgrade is necessary,
Document Number 82526
Rev. B1.6, 02–Nov–009
1. Set SD/MODE input to logic “HIGH”.
2. Set Txd input to logic “HIGH”. Wait ts ≥ 200 ns.
3. Set SD/MODE to logic “LOW” (this negative edge
latches state of Txd, which determines speed
setting).
4. After waiting th ≥ 200 ns Txd can be set to logic
“LOW”. The hold time of Txd is limited by the
maximum allowed pulse length.
Txd is now enabled as normal Txd input for the high
bandwidth mode.
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TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
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Setting to the Lower Bandwidth Mode
(2.4 kbit/s to 115.2 kbit/s)
1. Set SD/MODE input to logic “HIGH”.
2. Set Txd input to logic “LOW”. Wait ts ≥ 200 ns.
3. Set SD/MODE to logic “LOW” (this negative edge
latches state of Txd, which determines speed
setting).
4. Txd must be held for th ≥ 200 ns.
Txd is now enabled as normal Txd input for the lower
bandwidth mode.
Recommended SMD Pad Layout
The leads of the device should be soldered in the center position of the pads.
7 x 1 = 7
0.6 (≤ 0.7)
2.5 (≥ 2.0)
1
16524
Figure 7. TFDU6102E BabyFace (Universal)
8
1
Figure 8. TFDS6402 (Dracula)
www.vishay .comDocument Number 82526
Rev. B1.6, 02–Nov–0010
TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductor
1 1.8
5.08
2.542.54
5876
1.8
0.63
1.1
1.0
0.631
2.2
4123
2.542.54
8.3
15069
Figure 9. TFDS6502E Side View Package
Pad 1 is longer to designate Pin 1 connection to transceiver.
1.270.8
18
15068
Figure 10. TFDT6502E Top View Package
Pad 1 is longer to designate Pin 1 connection to transceiver.
Note: Leads of the device should be at least 0.3 mm within the ends of the pads.
Recommended Solder Profile
240
210
180
°
150
120
90
Temperature ( C )
60
30
0
050100 150 200 250 300 350
14874
2 - 4°C/s
2 - 4°C/s
Time ( s )
10 s max.
@ 230°C
90 s max.120 - 180 s
5.08
8.89
1.8
Current Derating Diagram
600
500
400
300
Current derating as a function of
200
the maximum forward current of
IRED. Maximum duty cycle: 25%.
100
Peak Operating Current ( mA )
0
–40 –20 020 40 60 80 100 120 140
Temperature ( °C )14875
Figure 1 1. Recommended Solder Profile
Document Number 82526
Rev. B1.6, 02–Nov–0011
Figure 12. Current Derating Diagram
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TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductor
TFDU6102E – Baby Face (Universal) Package
(Mechanical Dimensions)
12249
www.vishay .comDocument Number 82526
Rev. B1.6, 02–Nov–0012
TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
TFDS6402 Package (Mechanical Dimensions)
Vishay Semiconductor
15971
Document Number 82526
Rev. B1.6, 02–Nov–0013
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TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductors
TFDS6502E – Side V iew Package (Mechanical Dimensions)
14322
www.vishay .comDocument Number 82526
Rev. B1.6, 02–Nov–0014
TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductors
TFDT6502E – T op View Package (Mechanical Dimensions)
14325
Document Number 82526
Rev. B1.6, 02–Nov–0015
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TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductors
Revision History:
B1.1, 01/03/1999: New edition for optimized E family. TFDxxx01E – RXD output is grounded when the device
is switched to shutdown mode.
B1.2, 15/03/1999: A clean tri-state version with floating output in shutdown mode was added as 02 version. The
output radiant intensity was increased.
B1.4a, 26/10/1999:TR3 changed to TR4 for 01 types, weight of packages added.
B1.4b, 22/11/1999:Max. operating current changed from 4.0 mA to 4.5 mA, Dracula package version added,
some typos corrected.
B1.5, 13/10/2000: First typos corrected
B1.6, 02/11/2000: SMD pad layout tolerances added
www.vishay .comDocument Number 82526
Rev. B1.6, 02–Nov–0016
TFDU6102E/TFDS6402/TFDS6502E/TFDT6502E
Vishay Semiconductors
Ozone Depleting Substances Policy Statement
It is the policy of Vishay Semiconductor GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating
systems with respect to their impact on the health and safety of our employees and the public, as well as
their impact on the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. V arious national and international initiatives are pressing for an earlier ban
on these substances.
Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use of
ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting
substances and do not contain such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer application
by the customer. Should the buyer use Vishay Semiconductors products for any unintended or unauthorized application, the
buyer shall indemnify Vishay Semiconductors against all claims, costs, damages, and expenses, arising out of, directly or
indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use.