UM3750 PDF Datasheet
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Description
This is Programmable Encoder/Decoder. UN13750
Programmable Encoder, Decoder
Single chip contains both Encoder and Decoder. 3V to 11 V operation. On chip oscillator uses non-critical RC components. Cross interference of recetver is virtually eliminated by circuitry which requires 4 valid words to be received, each within 64ms of the other.
Schmitt Trigger input provides excellent noise immunity. Applications. alarm control system, security system cordless telephone, remote control. Interfaces with RF, ultrasonic, or infrared modulators I and demodulators
General Description
T h e U M 3 7 5 0 E n c o d e r , D e c o d e r is a CMOS, LSI digital code Transmitter-Receiver system. Working in the transmit (encoder) mode, the UM3750 will sequentially encode and transmit 12 bits of input. Each of the 12 bits may be 1 or 0 to allow 4096 different codes. In the
receive (decoder) mode, the incoming signal is
Once
IS
compared to the local code In a sequential manner an error
comparison on the next word. If all 12 bits are recei.