um3758 series --- z= --a m--w- preliminary i?ri-siate programmahle encoder/decoder features m single-chip cmos construction m single-chip encoder/decoder selected by jump wire m wide operating voltage range : v do = 3 to 12 volts . built-in rc oscillator (tan use 5 % resistor) n easy interface with rf, infrared(lr) and ultrasonic transmission media n tri-state(0, 1, open) address codes, some of address general description the um3758 series are single-chip programmable encoder /decoder ics fabricated in cmos structure for low power consun$ion: they are enhanced for new stage encoder/decoder ics to provide many more combinations for higher security. most fzmbinations are achieved by um3758-18oa, provid- ing 3 = 387,420,489 combinations. some ics of this series provide 4 to 8 data bits for controlling. pin configurations codes used as data codes or as internal addresses by mask option m internal address code is lsbii, ie 3 ?5 387,428, 489 different ccdes at most m decoder has 8-bit latch data m series 1c for various applications n um3758120a pin outcompatibleto um3750 according to the following information, the inter- nal address biis, 18 bis/24pin and 12 biis/lepin package, tan be assigned by customer in advance for much higher securii and confidentialii. whenever the address codes of transmitter transmits, the receiver will check the address codes with his own and the successive two matched address codes will generate a low pulse. if there were any data bits, the receiver will latch these data bis at the corresponding pins for controlling. ., - ._. 1
um3758 series pin configurations (continued) vdd tx/rx out rx inp iwde ?ss osc cl17 f116 fl15 i 02 e3 cl4 635 cl6 a8 r9 rio d2 nc ~vdd ft2 fl3 w rs c16 cl8 a9 aid fl12 nc vdd tx/rx out rx inp mode vss 0% cl17 ca16 01s nc absolute maximum ratings* *comments power supply voltage . . . . . . . . . .-0.3v to 11v operating temperature . . . . . . . . .-20c to 70% storage temperature (tstg) . . . . . 55c to 150c apply voltage on any pin . . . . . . . . . . . . . . vss - 0.3 < vin < vod + 0.3 dc electrical characteristics stresses above those listed under ?absolute maximum ratings? may cause permanent darnage to the device. these are stress ratings only. functional operation of this device at these or any other conditions above those indicated in the operational sections of this specification is not implied and exposure to absolute (t a = 25c , vdd = 9 volts , vss = ov unless otherwise specified) parameter operating voltage operating current schmitt trigger input level other pins input level output pin logic level data output current high level low level symbol min. vdd 3.0 lop - vsh 6 vsl - vih 8.5 vil 0 voh 8.5 vol 0 lohd 9 lold 9 t yp . - - - max. 12 1.2 2 9 0.5 9 1 unit v ma v v v v v v ma ma conditions high low high low high low v dd = 12v voh = 6v vol = 6v .?. .- 2 ._. : ..:%.h . ...,. ..~., <,.,;:..;:;:.
um3758 series dc electrical characteristics (continued) parameter symbol min. typ. max. unit , conditions tx/rx outputcurrent high level low level loht 35 ma ior 15 ma vod = 12v voh = 6v vol = 6v operating frequency f ?- 160 khz + 15% exclusive of external part pin descriptions 1. um3758-1 soa/am, um37584 20a and um3758-120am pin number um3758 um3758 -18oa -120a /am 1 2 1 3 2 4 3 5 4 6 5 7 8 6 9 7 10 8 11 - um3758 -120am designation descripti.on al address select line 1 is tri-state indicated as 0, 1 and open 1 a2 address select line 2 is tri-state indicated as 0, 1 and open 2 a3 address select line 3 is tri-state indicated as 0, 1 and open 3 a4 address select line 4 is tri-state indicated as 0, 1 and open 4 a5 address select line 5 is tri-state indicated as 0, 1 and open 5 a6 address select line 6 is tri-state indicated as 0, 1 and open a7 address select line 7 is tri-state indicated as 0, 1 and open 6 a8 address select line 8 is tri-state indicated as 0, 1 and open 7 1 ag 1 and open address select line 9 is tri-state indicated as 0, 1 address select line 10 is tri-state indicated as 0, 1 8 1 a10 1 and open address select line 11 is tri-state indicated as 0, 1 - 1 a1? / and open -l ,. -_ 3
.-. ad g == ==- -sv --- ------ l-a-4 -.m--- -w-w- um3758 wies pin descriptions (continued) pin number um3758 um3758 um3758 -18oa -12oa -120am /am 12 9 9 designation al2 description address select line 12 is tri-state indicated as 0, 1 and open 10 nc 11 nc 13 - - al3 no connection noconnection address select line 13 is tri-state indicated as 0, 1 and open 14 - al4 address select line 14 is tri-state indicated as 0, 1 and open 15 10 12 al5 address select line 15 is tri-state indicated as 0, 1 and open 16 11 13 al6 address select line 16 is tri-state indicated as 0, 1 and open 17 12 14 al7 address select line 17 is tri-state indicated as 0, 1 and open 16 - - al8 address select line 16 is tri-state indicated as 0, 1 and open 19 13 15 osc r.c. input pin for single pin oscillator. a resistor is connected from this pin to vdo and a capacitor to vss 20 14 16 vss 21 15 17 mode the ground pin for um3756 this pin is used to select transmit or receive mode mode - vdo : encoder mode ?*? mode - vss : decoder mode 22 16 18 rxinp receiver input pin. receives waveform from the detect circuit 23 17 19 tx/rx out in encoder mode, this pin will transmit waveform; in decoder mode, this pin will switch to low if comparison is ok 24 18 20 vdd the positive power supply of um3756 4
um3758 series 2. um3758=108a/b/am/bm, um3758-084a/b and um3758-084am/bm im3756 108a/b hm/sm 1 5 6 7 a 9 10 11 12 .- ?~~ designation description - i - l a? a 8 1 al0 dl 9 9 di address select line 1 is tri-state indicated as 0, 1 and open address select line 2 is tri-state indicated as 0, 1 and open address select line 3 is tri-state indicated as 0, 1 and open address select line 4 is tri-state indicated as 0, 1 and open address select line 5 is tri-state indicated as 0, 1 and open address select line 6 is triistate indicated as 0, 1 and open address select line 7 is tri-state indicated as 0, 1 and open address select line 8 is tri-state indicated as 0, 1 and open address
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