Technical Data Sheet
115.2Kbit/s Infrared Transceiver
TM3204/TR2
Features
․Excellent
Fluorescent Noise Immunity and Very
High EMI Immunity
․Wide
Operating Voltage Range from 2.4 to 5.0
Volts
․Independent
IrED Operating Voltage Range from
2.0 to 6 Volts
․Ultra
Small Surface Mount Package:
- L 8.0mm * W 3.0mm * H 2.15mm
․Data
Rate :2.4k ~ 115.2kbit/s
․Operating
Temperature Range : -25℃ to 85℃
․LED
Drive Current : 60 mA Typical
․Low
Shutdown Current :0.1μA Typical
․Few
External Components Required
․Pb-free
․The
product itself will remain within RoHS compliant version.
Descriptions
The TM3204/TR2 is a new generation of
low-cost infrared transceiver modules. The module is
in ultra-small surface mount package. Although the
operating voltage can range from 2.4 to5.0 Volts, the
LED drive current is internally compensated to a
constant 60 mA to assure that link distances meet the
low power standard of IrDA 1.3 physical layer
specification.
Applications
․PDA
․Digital
Still and Video Cameras
․Handheld
Battery Operated Products, ex: Handheld Printers
․Electronic
wallet
․Mobile
Telecommunication
Everlight Electronics Co., Ltd.
Device No: DTM-324-001
http://www.everlight.com
Prepared Date: 07-21-2005
Rev 3
Page: 1 of 10
Prepared By: Stephen Wang
TM3204/TR2
Package Dimensions
Unit : mm
Tolerance:
±0.2
mm
Everlight Electronics Co., Ltd.
Device No: DTM-324-001
http://www.everlight.com
Prepared Date: 07-21-2005
Rev 3
Page: 2 of 10
Prepared By: Stephen Wang
TM3204/TR2
Device Selection Guide
Standard
Mode
TM3204/TR2
Link
Distance
>50cm
Angle
2
θ
1/2
+/-15~+/-30
λ
p
(nm)
850~900
Operating
Voltage
(Vcc)
2.4~5.0 Volts
Data Rate
(kbps)
2.4~115.2
Pin Descriptions
Pin Symbol
1
2
3
4
5
6
7
8
NC
NC
Vcc
GND
SD
RXD
TXD
V
LEDA
Function
No Connect
No Connect
Supply Voltage
Ground
Shut Down
Receiver Data Output
Supply Voltage from 2.4 to 5.0 Volts. *Note 1
Connect to system ground
Must be driven either high or low. *Note 2
Output is a low pulse when a light pulse is
seen. *Note 3
I
O
I
High
Low
High
Description
I/O Active
Transmitter Data Input Logic High turn on the IrED. *Note 4
IrED Supply Voltage IrED Supply Voltage from 2.0 to 6 Volts.
Note 1: Receives power supply from 2.4 to 5.0 Volts. This pin provides power for the receiver and
transmitter drive section. Power supply noise in 100KHz to 2MHz range must have a dv/dt
of less than 50mV/us in receive mode.
Note 2: Asserting this pin above 1.4V causes the device to shut down, disabling transmitter and
tri-stating the receiver output; however, it must be driven above Vdd-1.3V for shutdown
current consumption to be less 1uA.
Note 3: Normally high goes low for duration of receive pulse. Output is a CMOS driver providing
rail to rail operation. RXD may go low continuously if the DC ambient exceeds input
capacity. During shutdown RXD output tri-states with a weak (500K) pull up.
Note 4: Asserting this pin above 1.4V turns on transmitter. This input is gated by the shutdown
function and AC coupled. Maximum transmit pulse width is ~50usec. Input has 500K pull
down which is active even during shutdown.
Everlight Electronics Co., Ltd.
Device No: DTM-324-001
http://www.everlight.com
Prepared Date: 07-21-2005
Rev 3
Page: 3 of 10
Prepared By: Stephen Wang
TM3204/TR2
Absolute Maximum Ratings (Ta=25℃)
reference point Pin GND unless otherwise noted.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Parameters
Supply Voltage
IrED Supply Voltage
Receiver Data Output
Transmitter Data Input
Shut Down
Operating Temperature
Range
Storage Temperature
Range
Soldering Temperature
See Recommended
Solder Profile
Test Conditions
Symbol
Tamb
Vcc to GND
Vcc
Test Conditions
All States
SD=0, TXD=Vcc
All States
All States
All States
Symbol
Vcc
V
LEDA
RXD
TXD
SD
Tamb
Tstg
Min.
-0.5
-0.5
-0.5
-0.5
-0.5
-25
-40
Typ.
Max.
7
Vcc+4
Vcc+0.5
Vcc+0.5
Vcc+0.5
+85
100
Unit
V
V
V
V
V
℃
℃
℃
-
245
Recommended Operating Conditions
Parameters
Operating Temperature
Range
Supply Voltage
Min. Typ.
-25
2.4
Max.
+85
5.0
Unit
℃
V
TXD,SD Input Threshold Vcc=2.4 to 5.0V
Receiver Date Rate
2.4
2.4
5.0
115.2
V
kbps
Electrical Characteristics
Tamb=25℃, Vcc=2.4V to5.0V unless otherwise noted.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Parameters
Transceiver
Supply Voltage
Supply Current Pin Vcc
(No signal)
Test Conditions / Pins
Vcc to GND
Vcc=3.6V
Symbol
Vcc
Icc
I
SD
T
TRL
T
PON
Min. Typ. Max.
2.4
110
0.01
50
100
1.0
100
150
5.0
Unit
V
uA
uA
uA
us
Shut Down Current Pin SD SD=Vcc, Vcc=2.4 to 5.0V
Transmit Receiver Latency
Transceiver Power on
Latency
Everlight Electronics Co., Ltd.
Device No: DTM-324-001
http://www.everlight.com
Prepared Date: 07-21-2005
Rev 3
Page: 4 of 10
Prepared By: Stephen Wang
TM3204/TR2
Opto-electronic Characteristics
Tamb=25℃,Vcc=2.4V to 5.0V unless otherwise noted.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Parameters
Test Conditions
Symbol
Min. Typ. Max. Unit
Receiver
Minimum Detection
SIR Mode, Vcc=3.6V
Ee
-
-
4
uW/cm
2
Threshold Irradiance SIR Mode, Vcc=2.7V
Ee
-
-
10 uW/m
2
Maximum Detection SIR Mode, Vcc=3.6V
Ee
-
500
uW/cm
2
Threshold Irradiance SIR Mode, Vcc=2.7V
Ee
-
1000
uW/cm
2
Logic LOW Receiver
Ee
0.4 uW/cm
2
Input Irradiance
Output Voltage
I
OH
=-200μA, EI≦0.3 uW/cm
2
V
OH
Vcc-0.2
Vcc
V
-Active
V
OL
0
0.4
V
I
OL
=200μA,
Vcc=5.0V, C=15pF
t
r
/t
f (RXD)
40
ns
Rise/Fall Time-RXD
60
ns
Vcc=2.4V, C=15pF
t
r
/t
f (RXD
Transmitter
IrED Operating Current Vcc=2.4 to 5.0V
Logic LOW Transmitter
Input Voltage
Logic HIGH Transmitter
Input Voltage
Output Radiant Intensity Vcc=2.7V
TXD Logic LOW Level
Angle of Half Intensity
Peak Wavelength of
Emission
Half-Width of Emission
Spectrum
I
IrED
V
IL
V
IH
Ie
Ie
2θ
1/2
λp
Δλ
0
2/3Vcc
4
30
850
870
40
900
5
0.04
60
-
1/3Vcc
Vcc
mA
V
V
mW/sr
mW/sr
°
nm
nm
Average IrED Current
Repetitive Pulsed IrED t<50μs, t
on
<20%
Current
Optical Rise/Fall Time,
Optical Overshoot
I
IrED
(DC)
I
IrED
(RP)
t
r
/t
f
11.25
60
180
600
25
mA
mA
ns
%
Everlight Electronics Co., Ltd.
Device No: DTM-324-001
http://www.everlight.com
Prepared Date: 07-21-2005
Rev 3
Page: 5 of 10
Prepared By: Stephen Wang
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