UM3750

The UM3750 is a CMOS/LSI digital code transmitter-receiver system.Working in the transmit(encoder) mode, it will sequnentially encode and transmit 12 bits of input.Each of the 12 bits may be 1 or 0 to allow 4096 different codes.

Features of the UM3750 are:(1)single chip contains both encoder and decoder;(2)3V to 11V operation;(3)on chip oscillator uses non-ciritical RC components;(4)cross interfence of receiver is virtually eliminated by circuitry which requies 4 valid words to be received,each within 64ms of the other;(5)schmitt trigger input provides excellent noise immunity;(6)applications:alarm control system,security system,cordless telephone,remote control;(7)interfaces with RF,ultrasonic,or infrared modulators and demodulators;(8)2¹²=4096 different codes.

The absolute maximum ratings of the UM3750 can be summarized as:(1)power supply voltage:-0.3V to 11V;(2)operating temperature:-20 to +70;(3)storage temperature(Tstg):-55 to +150;(4)applied voltage on any pin:GND-0.3v

If you want to know more information such as the electrical characteristics about the UM3750, please download the datasheet in www.seekic.com or www.chinaicmart.com .