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HT12D, HT-12D, HT12E

Table of contents:
Info of HT12D
Info of HT-12D
Info of HT12E

HT12D, HT-12D, HT12E Selling Leads, Datasheet

MFG:HOLTEK Package Cooled:SMD D/C:00+

HT12D, HT-12D, HT12E Datasheet download

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Part Number: HT12D

MFG: HOLTEK

Package Cooled: SMD

D/C: 00+

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HT12D General Description

The 2¹² decoders are a series of CMOS LSIs for remote control system applications. They are paired with Holtek's 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.

The decoders receive serial addresses and data from a programmed 2¹² series of encoders that are transmitted by a carrier using an RF or an IR transmission medium. They compare the serial input data three times continuously with their local addresses. If no error or unmatched 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 2¹²series of decoders are capable of decoding informations that consist of N bits of address 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.

HT12D Maximum Ratings

Supply Voltage.............................-0.3V to 13V
Storage Temperature............... -50 to 125
Input Voltage.................V_SS-0.3 to V_DD+0.3V
Operating Temperature ..............-20 to 75

Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute Maximum Ratings" may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

HT12D Features

` Operating voltage: 2.4V~12V
` Low power and high noise immunity CMOS technology
` Low standby current
` Capable of decoding 12 bits of information
` Pair with Holtek's 2¹² series of encoders
` 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

HT12D Typical Application

· 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

HT12D Connection Diagram

HT12E General Description

Holtek Encoder Chip, 18 Pin DIP

HT12E Maximum Ratings

Supply Voltage (HT12A) ............-0.3V to 5.5V
Supply Voltage (HT12E) .............-0.3V to 13V
Input Voltage................VSS-0.3 to VDD+0.3V
Storage Temperature..............-50 to 125
Operating Temperature.............-20 to 75

Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute MaximumRatings " may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

HT12E Features

` Operating voltage
` 2.4V~5V for the HT12A
` 2.4V~12V for the HT12E
` Low power and high noise immunity CMOS technology
` Low standby current: 0.1A (typ.) at V_DD=5V
` HT12A with a 38kHz carrier for infrared transmission medium
` Minimum transmission word
` Four words for the HT12E
` One word for the HT12A
` Built-in oscillator needs only 5% resistor
` Data code has positive polarity
` Minimal external components
` HT12A/E: 18-pin DIP/20-pin SOP package

HT12E Typical Application

· 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

HT12E Connection Diagram

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