everlight electronics co., ltd. http://www.ever light.com rev 2 page: 1 of 9 device no: dtm-328-001 prepared date: 07-21-2005 prepared by: stephen-wang technical data sheet 115.2kbit/s infrared transceiver tm3208/tr2 features ? compliant irda 1.4 low power specification ? excellent fluorescent noise immunity and very high emi immunity ? wide operating voltage range from 2.4 to 5.0volts ? ultra small surface mount package: - l7.0mm * w2.8mm * h1.6mm ? data rate :2.4k ~ 115.2kbit/s ? operating temperature range : -25 to 85 ? low shutdown current : 0.01 a typical ? link distance:80cm(min.) at leda=50ma ? few external components required ? pb-free ? the product itself will remain within rohs compliant version. descriptions the tm3208/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 to 5.0volts, the led drive current is internally compensated to a constant 50ma to assure that link distances meet the low power standard of irda 1.4 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. http://www.ever light.com rev 2 page: 2 of 9 device no: dtm-328-001 prepared date: 07-21-2005 prepared by: stephen-wang tm3208/tr2 package dimensions unit: mm tolerance : 0.2 mm recommended land pattern for tm3208/tr2 unit: mm mounting center
everlight electronics co., ltd. http://www.ever light.com rev 2 page: 3 of 9 device no: dtm-328-001 prepared date: 07-21-2005 prepared by: stephen-wang tm3208/tr2 device selection guide transmitter receiver mode link distance angle 2 1/2 link distance angle 2 1/2 p operating voltage (vcc) data rate tm3208/tr2 >80cm +/-15 +/-30 >80cm +/-15 +/-30 850~900 nm 2.4~5.0 volts 2.4k~115.2k bps pin descriptions pin symbol function description i/o active 1 leda led anode irled supply voltage from 2.4 to vcc+4 v 2 ledc led cathode internally connected to the led driver. 3 txd transmitter data logic high turn on the irled *note 4 i high 4 rxd receiver data output is a low pulse when a light pulse is seen.. *note 3 olow 5 sd shut down must be driven either high or low. *note 2 i high 6 vcc supply voltage supply voltage from 2.4 to 5.0volts. *note 1 7 gnd analog ground connect to system ground note 1: receives power supply fr om 2.4to 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 shutdown, disabling transmitter and tri-stating the receiver output; however, it mu st be driven above vdd-0.7v for shutdown current consumption to be less 1ua. note 3: normally high goes low for duration of r eceive pulse. output is a cmos driver providing rail to rail operation. rxd may go low conti nuously 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 pul se width is ~50usec. input has 500k pull down which is active even during shutdown.
everlight electronics co., ltd. http://www.ever light.com rev 2 page: 4 of 9 device no: dtm-328-001 prepared date: 07-21-2005 prepared by: stephen-wang tm3208/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 test conditions symbol min. typ. max. unit supply voltage all states vcc -0.5 7 v ired supply voltage sd=0, txd=vcc v leda -0.5 9 v receiver data output all states rxd -0.5 vcc+0.5 v transmitter data input all states txd -0.5 vcc+0.5 v shut down all states sd -0.5 vcc+0.5 v operating temperature range tamb -25 +85 storage temperature range tstg -40 100 soldering temperature see recommended solder profile - 245 recommended operating conditions parameters test conditions symbol min. typ. max. unit operating temperature range tamb -25 +85 supply voltage vcc to gnd vcc 2.4 5.0 v receiver date rate 2.4 115.2 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 test conditions / pins symbol min. typ. max. unit transceiver supply voltage vcc to gnd vcc 2.4 5.0 v supply current pin vcc (receive mode) vcc=2.4 to 5.0v icc (rx) 150 ua supply current pin vcc (avg.) (transmit mode) i ired =50 ma(at v leda pin) vcc=3.6v icc1 (tx) 1.4 ma shut down current pin sd sd=vcc,vcc=2.4 to 5.0v i sd 0.01 1.0 ua transmit receiver latency t trl 50 100 ua transceiver power on latency t pon 100 150 us
everlight electronics co., ltd. http://www.ever light.com rev 2 page: 5 of 9 device no: dtm-328-001 prepared date: 07-21-2005 prepared by: stephen-wang tm3208/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 sir mode, vcc=5.5v ee - - 4 uw/cm 2 minimum detection threshold irradiance sir mode, vcc=2.4v ee - - 10 uw/m 2 sir mode, vcc=5.5v ee - 500 uw/cm 2 maximum detection threshold irradiance sir mode, vcc=2.4v ee - 1000 uw/cm 2 logic low receiver input irradiance ee 0.4 uw/cm 2 i oh =-200 a, ei Q 0.3 uw/cm 2 v oh vcc-0.2 vcc v rxd output voltage i ol =200 a, v ol 0 0.4 v rxd pulse width vcc=3.6v t pw 1.5 2.5 us vcc=5.0v, c=15pf t r /t f (rxd) 40 ns rise/fall time-rxd vcc=2.4v, c=15pf t r /t f (rxd) 60 ns transmitter ired operating current vcc=2.4 to 5.0v i ired 50 - ma logic low transmitter input voltage v il 0 1/3vcc v logic high transmitter input voltage v ih 2/3vcc vcc v vcc=2.4v ie 4 mw/sr output radiant intensity txd logic low level ie 0.04 mw/sr angle of half intensity 2 1/2 30 60 peak wavelength of emission p 850 875 900 nm half-width of emission spectrum ? 40 nm average ired current i ired (dc) 100 ma repetitive pulsed ired current t<50 s, t on <20% i ired (rp) 400 ma optical rise/fall time, tpw(txd)= 1.6 s t r /t f 600 ns optical overshoot 25 %
everlight electronics co., ltd. http://www.ever light.com rev 2 page: 6 of 9 device no: dtm-328-001 prepared date: 07-21-2005 prepared by: stephen-wang tm3208/tr2 recommended circuit diagram note:outlined components are optional depending on the quality of the power supply. component recommended value c1 0.1uf(ceramic). it must be plac ed within 0.7cm of the tm3208/tr2 c2 10uf(electrolytic). it must be placed within 15cm of the tm3208/tr2 r1 recommended r1=10 . resistor must have a positive temperat ure coefficient of 0.47% per degree c
everlight electronics co., ltd. http://www.ever light.com rev 2 page: 7 of 9 device no: dtm-328-001 prepared date: 07-21-2005 prepared by: stephen-wang tm3208/tr2 taping and packing information shape of reel and dimensions version tape width a n w1 w2max c 16 330 1 100 1.5 18 2 21.7 tape dimensions reel hub
everlight electronics co., ltd. http://www.ever light.com rev 2 page: 8 of 9 device no: dtm-328-001 prepared date: 07-21-2005 prepared by: stephen-wang tm3208/tr2 leader and trailer quantity tm3208/tr2 2500 pcs. per reel cover tape peel strength according to iec 286 0.1 to 1.3n 300 10%mm/min 165 -180 peel angle damp proof packing. the reel is packed in a damp proof aluminum bag to protect the devices from absorbing moisture during transportation and storage. min.200 min.400 trailer no devices devices no devices leader start end aluminum bag label reel
everlight electronics co., ltd. http://www.ever light.com rev 2 page: 9 of 9 device no: dtm-328-001 prepared date: 07-21-2005 prepared by: stephen-wang tm3208/tr2 recommended method of storage the following are general recommendations for moisture sensitive level (msl) 4 storage and use: z shelf life in sealed bag: 12 months at < 40 c and < 90% relative humidity (rh) z after bag is opened, devices that will be subjected to reflow solder or other high temperature process must a) mounted within 72 hours of factory conditions < 30 c/60%rh, or b) stored at <20% rh z devices require bake, before mounting, if: humidity indicator card is > 20% when read at 23 5 c z if baking is required, devices may be baked: a) 192 hours at 40 ,and <5% rh(dry air/nitrogen) or b) 96 hours at 60 ,and <5% rh for all device containers c) 24 hours at 125 c esd precaution proper storage and handling procedures should be followed to prevent esd damage to the devices especially when they are removed from the antistatic shielding bag. electro-static sensitive devices warning labels are on the packing. recommended solder profile 2.5~5 c/sec 2.5~5 c/sec. pre-heating 120~150 c 120sec.max. 60sec. max above. 260 c max. 5sec. max . notice: (1) reflow soldering should not be done more than two times. (2) when soldering, do not put stress on the irda devices during heating. (3) after soldering, do not warp the circuit board.
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