General Description
The UM3750A Encoder/Decoder is a CMOS/LSI digital code Transmitter-Receiver system. Working in the transmit (encoder) mode, the UM3750A will sequentially encode and transmit 12 bits of input. Each of the 12 bits may be 1 or 0 to allow 4096 different codes.
Features
â Single chip contains both Encoder and Decoder.
â 3V to 11 V operation.
â On chip oscillator uses non-critical RC components.
â Cross interference of recetver is virtually eliminated
by circuitry which requires 4 valid words to be received,
each within 64ms of the other.
â Schmitt Trigger input provides excellent noise immunity.
â Applications. alarm control system, security system
cordless telephone, remote control.
â Interfaces with RF, ultrasonic, or infrared modulators
and demodulators
â 212 = 4096 different codes
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