VISHAY TFDU4300 Technical data

Infrared Transceiver Module (SIR, 115.2 kbit/s)
for IrDA

Description

The TFDU4300 is a low profile (2.5 mm) infrared
transceiver module with independent logic reference
voltage (V
compliant to the latest IrDA
for fast infrared data communication, supporting

®

IrDA

speeds up to 115.2 kbit/s (SIR) and carrier
based remote control. The transceiver module con­sists of 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 device covers an extended IrDA
range of close to 1 m. With an external current control
resistor the current can be adjusted for shorter
ranges.

This Vishay SIR transceiver is built in a new smaller
package using the experiences of the lead frame
BabyFace technology.

®

applications

) for low voltage IO interfacing. It is

logic

®

physical layer standard

®

low power

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. TFDU4300 has a tri-state output and is
floating in shut-down mode with a weak pull-up.

TFDU4300

Vishay Semiconductors

18065

Features

• Compliant to the latest IrDA® physical
layer specification (9.6 kbit/s to

115.2 kbit/s) and TV Remote Control,
bi-directional operation included.

• Operates from 2.4 V to 5.5 V within specification
over full temperature range from - 30 °C to + 85 °C

• Logic voltage 1.5 V to 5.5 V is independent of
IRED driver and analog supply voltage

• Split power supply, transmitter and receiver can be
operated from two power supplies with relaxed
requirements saving costs, US Patent No.
6,157,476

• Extended IrDA

• Typical Remote Control range 12 m

• Low power consumption
(< 0.12 mA supply current)

• Power shutdown mode (< 5 µA shutdown current
in full temperature range, up to 85 °C)

®

Low Power range to about 70 cm

e3

Applications

• Ideal for battery operated applications

• Telecommunication products

(cellular phones, pagers)

• Digital still and video cameras

• Printers, fax machines, photocopiers, screen

• projectors

• Medical and industrial data collection

• Diagnostic systems

• Surface mount package, low profile (2.5 mm)

- (L 8.5 mm × H 2.5 mm × W 2.9 mm)

• High efficiency emitter

• Low profile (universal) package capable of
surface mount soldering to side and top view
orientation

• Directly interfaces with various Super I/O and con­troller devices as e.g. TOIM4232

• Tri-state-receiver output, floating in shut down with
a weak pull-up

• Compliant with IrDA background light
specification

• EMI immunity in GSM bands > 300 V/m verified

• Lead (Pb)-free device

• Device in accordance to RoHS 2002/95/EC and
WEEE 2002/96EC

• Notebook computers, desktop PCs,

Palmtop computers (Win CE, Palm PC), PDAs

• Internet TV boxes, video conferencing systems

• External infrared adapters (Dongles)

• Data loggers

• GPS

• Kiosks, POS, Point and Pay devices including

IrFM - applications

Document Number 82614

Rev. 1.5, 05-Dec-05

www.vishay.com

1

TFDU4300

RED C

Vishay Semiconductors

Parts Table

Part Description Qty / Reel

TFDU4300-TR1 Oriented in carrier tape for side view surface mounting 750 pcs

TFDU4300-TR3 Oriented in carrier tape for side view surface mounting 2500 pcs

TFDU4300-TT1 Oriented in carrier tape for top view surface mounting 750 pcs

TFDU4300-TT3 Oriented in carrier tape for top view surface mounting 2500 pcs

Functional Block Diagram

V

logic

Push-Pull

Amplifier

Comparator

Driver

RXD

Vcc2

18282

SD

TXD

Logic
&

Control

Controlled Driver

GND

Pin Description

Pin Number Function Description I/O Active

1V

CC2

IRED Anode

Connect IRED anode directly to the power supply (V

current can be decreased by adding a resistor in series between the

power supply and IRED anode. A separate unregulated power

supply can be used at this pin.

2 IRED Cathode IRED Cathode, internally connected to the driver transistor

3 TXD This Schmitt-Trigger input is used to transmit serial data when SD

is low. An on-chip protection circuit disables the LED driver if the

TXD pin is asserted for longer than 300 μs. The input threshold

voltage adapts to and follows the logic voltage swing defined by the

applied V

logic

voltage.

4 RXD Received Data Output, push-pull CMOS driver output capable of

driving standard CMOS or TTL loads. During transmission the RXD

output is inactive. 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 V

5 SD Shutdown. The input threshold voltage adapts to and follows the

logic voltage swing defined by the applied V

6V

7V

CC1

logic

V

defines the logic voltage level of the I/O ports to adap the logic

logic

Supply Voltage

voltage swing to the IR controller. The RXD output range is from 0

V to V

, for optimum noise suppression the inputs- logic decision

logic

level is 0.5 x V

logic

8 GND Ground

logic

). IRED

CC2

voltage

logic

voltage.

IHIGH

OLOW

IHIGH

I

www.vishay.com

2

Document Number 82614

Rev. 1.5, 05-Dec-05

TFDU4300

Vishay Semiconductors

Pinout

TFDU4300
weight 75 mg

Definitions:

In the Vishay transceiver data sheets the following nomenclature is

used for defining the IrDA

®

operating modes:

SIR: 2.4 kbit/s to 115.2 kbit/s, equivalent to the basic serial infrared

standard with the physical layer version IrPhy 1.0

MIR: 576 kbit/s to 1152 kbit/s

FIR: 4 Mbit/s

VFIR: 16 Mbit/s

MIR and FIR were implemented with IrPhy 1.1, followed by IrPhy

1.2, adding the SIR Low Power Standard. IrPhy 1.3 extended the

Low Power Option to MIR and FIR and VFIR was added with IrPhy

1.4.A new version of the standard in any case obsoletes the former

version.

With introducing the updated versions the old versions are obso-

lete. Therefore the only valid IrDA

®

standard is the actual version

18101

1234

IRED A

IRED C

TXD

56

RXD SD Vcc

7

Vlog

8

GND

IrPhy 1.4 (in Oct. 2002).

Absolute Maximum Ratings

Reference point Ground (pin 8) unless otherwise noted.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.

Parameter Test Conditions Symbol Min Ty p. Max Unit

Supply voltage range,
transceiver

Supply voltage range,
transmitter

Supply voltage range, V

logic

- 0.3 V < V

- 0.5 V < V

- 0.5 V < V

- 0.5 V < V

- 0.5 V < V

- 0.3 V < V

RXD output voltage - 0.5 V < V

- 0.3 V < V

Voltage at all inputs Note: V

in

< 6 V

CC2

< 6 V

logic

< 6 V

CC1

< 6 V

logic

< 6 V

CC1

< 6 V

CC2

< 6 V

CC1

< 6 V

logic

≥ V

is allowed V

CC1

V

V

V

V

CC1

CC2

logic

RXD

IN

Input current for all pins, except IRED anode

pin

Output sinking current 25 mA

Power dissipation see derating curve P

Junction temperature T

Ambient temperature range
(operating)

Storage temperature range T

D

J

T

amb

stg

Soldering temperature see recommended solder profile 260 °C

Average output current, pin 1 I

Repetitive pulsed output
current, pin 1 to pin 2

t < 90 μs, t

< 20 % I

on

IRED(DC)

IRED(RP)

- 0.5 + 6.0 V

- 0.5 + 6.0 V

- 0.5 + 6.0 V

- 0.5 V

+ 0.5 V

logic

- 0.5 + 6.0 V

10 mA

250 mW

125 °C

- 30 + 85 °C

- 40 + 100 °C

125 mA

600 mA

Document Number 82614

Rev. 1.5, 05-Dec-05

www.vishay.com

3

TFDU4300

Vishay Semiconductors

Eye safety information

Parameter Test Conditions Symbol Min Ty p. Max Unit

Virtual source size Method: (1-1/e) encircled

energy

Maximum intensity for class 1 IEC60825-1 or EN60825-1,

edition Jan. 2001, operating
below the absolute maximum
ratings

*)

Due to the internal limitation measures the device is a "class 1" device under all conditions.

**)

IrDA specifies the max. intensity with 500 mW/sr.

Note: We apologize to use sometimes in our documentation the abbreviation LED and the word Light Emitting Diode instead of Infrared
Emitting Diode (IRED) for IR-emitters. That is by definition wrong; we are here following just a bad trend.

Typical values are for design aid only, not guaranteed nor subject to production testing and may vary with time.

d1.31.8 mm

I

e

*)

(500)

**)

mW/sr

www.vishay.com

4

Document Number 82614

Rev. 1.5, 05-Dec-05

Electrical Characteristics

Transceiver

Tested at T
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.

Supply voltage Remark: For 2.4 V < V

Idle supply current at V
(receive mode, no signal)

Idle supply current at V
(receive mode, no signal)

Average dynamic supply
current, transmitting

Standby supply current SD = High, T = 25 °C, E

Standby supply current, V

Operating temperature range T

Output voltage low, RXD C

Output voltage high, RXD I

RXD to V

Input voltage low (TXD, SD) V

Input voltage high (TXD, SD)

Input voltage high (TXD, SD)

Input leakage current (TXD, SD) V

Controlled pull down current SD, TXD = "0" to "1",

Input capacitance (TXD, SD) C

*)

Standard illuminant A

**)

To provide an improved immunity with increasing V

recommended to use the specified min/max values to avoid increased operating current.

= 25 °C, V

amb

CC1

= V

= 2.7 V to 5.5 V unless otherwise noted.

CC2

Parameter Test Conditions Symbol Min Ty p. Max Unit

V

CC1

2.4 5.5 V

2.6 V at T

< - 25 °C a minor

amb

CC1

<

reduction of the receiver
sensitivity may occur

CC1

logic

SD = Low, E
T

amb

V

CC1

SD = Low, E
T

amb

V

CC1

SD = Low, E

= 1 klx*),

e

= - 25 °C to + 85 °C,

= V

= 2.7 V to 5.5 V

CC2

= 1 klx*),

e

= 25 °C,

= V

= 2.7 V to 5.5 V

CC2

= 1 klx*), V

e

log

,

I

CC1

I

CC1

I

log

pin 7, no signal, no load at RXD

I

= 300 mA, 20 % Duty

IRED

I

CC1

Cycle

= 0 klx I

e

SD = High, T = 70 °C I

SD = High, T = 85 °C I

no signal, no load I

logic

= 15 pF V

Load

= - 500 μAV

OH

I

= - 250 μA, C

OH

impedance R

CC1

CMOS level

CMOS level

= 0.9 x V

IN

V

< 0.15 V

IN

**)

**)

logic

, V

, V

logic

Load

logic

logic

= 15 pF V

≥ 2.5 V

< 2.5 V

SD, TXD = "0" to "1",
V

> 0.7 V

IN

logic

the typical threshold level is increasing with V

logic

V

V

I

I

IRTx

I

IRTx

SD

SD

SD

log

A

OL

OH

OH

RXD

IL

IH

IH

ICH

IN

- 30 + 85 °C

- 0.5 0.15 x V

0.8 x V

logic

0.9 x V

logic

400 500 600 kΩ

- 0.5 0.5 V

V

- 0.5 6 V

logic

0.8 x V

logic

- 2 + 2 μA

- 1 0 1 μA

TFDU4300

Vishay Semiconductors

90 130 μA

75 μA

1 μA

0.65 mA

0.1 μA

2 μA

3 μA

1 μA

logic

V

+ 0.5 V

logic

V

+ 0.5 V

logic

6V

+ 150 μA

5pF

and set to 0.5 x V

logic

V

logic

. It is

Document Number 82614

Rev. 1.5, 05-Dec-05

www.vishay.com

5

TFDU4300

Vishay Semiconductors

Optoelectronic Characteristics

Receiver

Tested at T
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.

Minimum irradiance E
angular range **)

Maximum Irradiance Ee In
Angular Range ***)

Maximum no detection
irradiance

Rise time of output signal 10 % to 90 %, CL = 15 pF t

Fall time of output signal 90 % to 10 %, C

RXD pulse width of output signal input pulse length > 1.2 μst

Stochastic jitter, leading edge

Standby /Shutdown delay,
receiver startup time

Latency t

*)

Equivalent to IrDA® Background Light and Electromagnetic Field Test: Fluorescent Lighting Immunity.

**)

IrDA sensitivity definition: Minimum Irradiance Ee In Angular Range, power per unit area. The receiver must meet the BER specifica­tion while the source is operating at the minimum intensity in angular range into the minimum half-angular range at the maximum Link
Length.

***)

Maximum Irradiance Ee In Angular Range, power per unit area. The optical delivered to the detector by a source operating at the
maximum intensity in angular range at Minimum Link Length must not cause receiver overdrive distortion and possible ralated link errors.
If placed at the Active Output Interface reference plane of the transmitter, the receiver must meet its bit error ratio (BER). For more defini­tions see the document “Symbols and Terminology” on the Vishay Website (http://www.vishay.com/docs/82512/82512.pdf).

= 25 °C, V

amb

CC1

= V

= 2.7 V to 5.5 V unless otherwise noted.

CC2

Parameter Test Conditions Symbol Min Ty p. Max Unit

in

e

9.6 kbit/s to 115.2 kbit/s

λ = 850 nm - 900 nm
α = 0 °, 15 °

λ = 850 nm - 900 nm E

λ = 850 nm - 900 nm

, tf < 40 ns,

t

r

= 1.6 μs at f = 115 kHz,

t

po

E

e

e

E

e

4

(0.4)

40
(4)

5

(500)

80
(8)

mW/m

(μW/cm

kW/m

(mW/cm2)

mW/m

(μW/cm

no output signal allowed

20 100 ns

20 100 ns

1.65 2.0 3.0 µs

250 ns

= 15 pF t

L

input irradiance = 100 mW/m

r(RXD)

f(RXD)

PW

2

,

≤ 115.2 kbit/s

after shutdown active or

150 µs

power-on

L

100 150 µs

2

2)

2

2

2)

www.vishay.com

6

Document Number 82614

Rev. 1.5, 05-Dec-05