General Description

The 212 decoders are a series of CMOS LSIs for remote control system applications. They are paired with Holteks 212 series of encoders (refer to the encoder/decoder cross reference table). For proper operation, a pair of encoder/decoder with the same number of addresses and data format should be chosen

特性 Features

? Operating voltage: 2.4V~12V

? Low power and high noise immunity CMOS technology

? Low standby current

? Capable of decoding 12 bits of information

? Binary address setting

? Received codes are checked 3 times

? Address/Data number combination

- HT12D: 8 address bits and 4 data bits

- HT12F: 12 address bits only

? Built-in oscillator needs only 5 resistor

? Valid transmission indicator

? Easy interface with an RF or an infrared transmission medium

? Minimal external components

? Pair with Holteks 212 series of encoders

? 18-pin DIP, 20-pin SOP package

Applications

? Burglar alarm system

? Smoke and fire alarm system

? Garage door controllers

? Car door controllers

? Car alarm system

? Security system

? Cordless telephones

? Other remote control systems