18-09-2017, 04:59 PM
Decoder 318 is a series of LSI CMOS for remote control system applications. They are paired with the 318 series of encoders. For correct operation, a pair of encoder / decoder pairs with the same number of addresses and data format must be selected (see encoder / decoder cross reference tables). The decoder series 318 receives the serial address and data from that set of encoders that are transmitted by a carrier using an RF or IR transmission medium. It then compares the serial input data twice continuously with your local address. If no errors or mismatched codes are found, the input data codes are decoded and then transferred to the output pins. The VT pin also goes high to indicate a valid transmission. The 318 decoders are capable of decoding 18 bits of information consisting of N address bits and 18 N data bits. In order to satisfy several applications, they are arranged to provide a series of data pins ranging from 0 to 8 and an address pin whose range is from 8 to 18. In addition, the 318 decoders provide various combinations of address / data numbers in different packages.