HT12A/HT12E

2

Selection Table

Function Address

No.

Address/

Data No.

Data No. Oscillator

Trigger

Carrier

Output

Negative

Polarity

Package

Part No.

HT12A

8

0

4

455kHz

resonator

D8~D11

38kHz

No

18DIP, 20SOP

HT12E

8

4

0

RC

oscillator

TE

No

No

18DIP, 20SOP

Note:

Address/Data represents pins that can be either address or data according to the application requirement.

Rev. 1.10

1

January 24, 2003

General Description

The 2

control system applications. They are capable of encod-

ing information which consists of N address bits and

12

-N data bits. Each address/data input can be set to

one of the two logic states. The programmed ad-

dresses/data are transmitted together with the header

bits via an RF or an infrared transmission medium upon

receipt of a trigger signal. The capability to select a TE

trigger on the HT12E or a DATA trigger on the HT12A

further enhances the application flexibility of the 2

ries of encoders. The HT12A additionally provides a

38kHz carrier for infrared systems.

Features

technology

medium

Applications