HT12D-18 Holtek Semiconductor Inc, HT12D-18 Datasheet
HT12D-18
Related parts for HT12D-18
HT12D-18 Summary of contents
Page 1
... The VT pin also goes high to indicate a valid transmission. 12 The 2 series of decoders are capable of decod- ing informations that consist of N bits of ad- dress and 12-N bits of data. Of this series, the HT12D is arranged to provide 8 address bits and 4 data bits, and HT12F is used to decode 12 bits of address information. VT Oscillator Trigger L Ö ...
Page 2
Block Diagram Note: The address/data pins are available in various combinations (see the address/data table). Pin Assignment 12 2 Series of Decoders 2 July 12, 1999 ...
Page 3
Pin Description Internal Pin Name I/O Connection NMOS A0~A11 I TRANSMISSION GATE D8~D11 O CMOS OUT DIN I CMOS CMOS OUT OSC1 I OSCILLATOR OSC2 O OSCILLATOR VSS I ¾ VDD I ¾ Approximate internal connection circuits ...
Page 4
Electrical Characteristics Symbol Parameter V Operating Voltage DD I Standby Current STB I Operating Current DD Data Output Source Current (D8~D11 Data Output Sink Current (D8~D11) VT Output Source Current Output Sink Current V ²H² ...
Page 5
... Output type 12 Of the 2 series of decoders, the HT12F has no data output pin but its VT pin can be used as a momentary data output. The HT12D, on the other hand, provides 4 latch type data pins whose data remain unchanged until new data are received. Part ...
Page 6
... HT12D 4 8 HT12F 0 12 Address/Data sequence The following table provides address/data sequence for various models of the 2 correct device should be chosen according to the requirements of the individual addresses and data. Part No HT12D HT12F Series of Decoders Package ...
Page 7
Oscillator frequency vs supply voltage The recommended oscillator frequency Series of Decoders (decoder (HT12E encoder) OSCD OSCE (HT12A encoder). OSCE July 12, 1999 ...
Page 8
Application Circuits Notes: Typical infrared receiver: PIC-12043T/PIC-12043S (KODESHI CORP.) Typical RF receiver: JR-200 (JUWA CORP.) RE-99 (MING MICROSYSTEM, U.S.A Series of Decoders or LTM9052 (LITEON CORP.) 8 July 12, 1999 ...
Page 9
... RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Copyright ã 1999 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are ...