IC-krets UM3750A Encoder/Decoder

IC-krets UM3750A Encoder/Decoder

https://www.thierry-lequeu.fr/data/UM3750.pdf

General Description
The UM3750 Encoder/Decoder 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.

Features
¦ 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
and demodulators