unisonic technologies co., ltd ut232a preliminary cmos www.unisonic.com.tw 1 of 5 copyright ? 2009 unisonic technologies co., ltd qw-r502-272.b enhanced rs-232 line drivers/receivers ? description the utc ut232a is the enhanced versions rs-232 line drivers/receivers. enhancement s of use performance include increased drive current for longer and more flexible cable configurations and 10v/s slew rate, 120k bits per second guaranteed transmission rate and ease of use enhancements include enhanced esd protection, low power dissipation, smaller, 0.1f charge pump capacitors, and overall ruggedized construction for commercial environments. ? features * receiver input levels:30v * single 5v power supply * 0.1f small charge pump capacitors * high data rate-120kbps * high output slew rate 10v/s * 1a low power shutdown * 3-state outputs of ttl/cmos receiver * multiple drivers and receivers dip-16 sop-16 lead-free: ut232al halogen-free: ut232ag ? ordering information ordering number normal lead free halogen free package packing ut232a-d16-t ut232al-d16-t ut232ag-d16-t dip-16 tube ut232a-s16-r ut232al-s16-r UT232AG-S16-R sop-16 tape reel
ut232a preliminary cmos unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-272.b ? pin configuration
ut232a preliminary cmos unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r502-272.b ? absolute maximum ratings parameter symbol ratings unit supply voltage range v cc 6 v positive-output supply voltage range v + (v cc -0.3) ~+13.2 v negative-output supply voltage range v - 13.2v v t in -0.3~(v cc +0.3) v input voltages r in 30 v t out (v+, +0.3) ~(v-, -0.3) v output voltages r out -0.3~(vcc+0.3) v short circuit duration t out continuous power dissipation p d 375 mw operating temperature t opr 0 ~ +70 note absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? electrical characteristics (v cc =+5v10%; 0.1f charge pump capacitors; t min to t max unless otherwise specified.) parameter symbol test conditions min typ max unit ttl input low t in ; en , sd 0.8 v logic threshold high v thr t in ; en , sd 2.0 v logic pull up current t in =0v 15 200 a maximum data rate c l =2500pf, r l =3k ? 120 k ttl output low v ol i out =3.2ma; v cc =+5v 0.4 v ttl/cmos output voltage high v oh i out =-1.0ma 3.5 v rs-232 output output voltage swing v o(sw) all transmitter outputs loaded with 3k ? to ground 5 9 v output resistance r o v cc =0v; v out =2v 300 ? output short circuit current i o(sc) infinite duration 18 ma rs-232 input voltage range -30 +30 v low v thr(l) 0.8 1.2 v voltage threshold high v thr(h) v cc =5v, t a =+25 1.7 2.4 v hysteresis v hys v cc =5v, t a =+25 0.2 0.5 1.0 v resistance r i t a =+25 , -15v v in +15v 3 5 7 k ? dynamic characteristics propagation delay, rs232 to ttl 1.5 s instantaneous slew rate sr c l =10pf, r l =3-7k ? ; t a =+25 30 v/s transition region slew rate sr c l =2500pf, r l =3k ? ;measured from +3v ~ -3v or -3v ~ +3v 10 v/s power requirements no load, t a =+25 ; v cc =5v 10 15 ma v cc power supply current all transmitters r l =3k ? ;t a =+25 25 ma
ut232a preliminary cmos unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r502-272.b ? application information to operate from a single +5v supply, the utc ut232a include charge pump voltage converters which can allow it. to generate the rs-232 output levels these converters convert the +5v input power to the 10v needed. the current drain due to charge pump operat ion is considerably reduced, typically to 400a with this power supplied externally. the utc ut232a can operate over the commercial, indus trial and military temperature ranges. protection from shorts to 15v against shorts to ground, any other driver output, and v + or v - the driver outputs are prot ected. if the outputs is connected to voltages higher than 15v inadvertently, then the external prot ection is recommended to be provided. while voltages exceeding 15v ,for protection, two back- to-back zener diodes which is connected from each output to ground will clamp the outputs to an acceptable voltage level.
ut232a preliminary cmos unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r502-272.b utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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