encoder / decoder 4 N?Ba / a vd5026/5027/5028 ----------------------------------------------------------------------------------------------------------------- 1.0 features c wide operating voltage (2 - 6v) ? (2 - 6v) low standby power consumption oB? on-chip rc oscillator, no crystal required ?U, o?w four time transmission with polarity checking 4 OBl maximum of 4,194,304 combinations encoding capability 4,194,304 Na minimize external components easy interface with rf, ultrasonic or infrared transmission c rf, t? media ywB bonding option available to maximize encoding capacity xg? , 4 NB(0, with 4 possible addressing states. (0, 1, open and 4 th state) _ 4th), ?a 2.0 electrical characteristics v dd = 5v, t a = 25 ( unless otherwise specified ?e] ) limits parameter symbol min typ max unit operating voltage ? v dd 2 5 6 v standby current oB i sb - - 0.6 a operating current i dd - - 400 a output voltage high ?? |v oh | 4.0 - - ma output voltage low ?? v ol - - 0.19 ma frequency l freq 45 - 72 k hz source current ? (v oh = 4v) i oh -2.0 - - ma sink current M (v ol = 1v) i ol 2.0 - - ma input current ? i in (te) - - 25 a 3.0 application security systems ?y theft alarm systems I?y cordless telephone o? smoke and fire alarm systems ???y tv game remote controllers ?[ou garage door controller ?T other remote control systems (toys, tv ?) u?y
encoder / decode r 4 N?Ba / a vd5026/5027/5028 ---------------------------------------------------------------------------------------------------- ------------- 4.0 applica t ion informa t ion Y thr ee state operation d3 d2 d1 d0 te do vdd v d 5 0 2 6 - 3 tx di vt vdd v d 5 0 2 8 - 3 v t vdd rx v d 5 0 2 7 - 3 di rx the ic subst r at e shoul d be connect ed t o v dd . ?r?v dd
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