Datasheet HT644L, HT646L, HT612, HT615, HT605L Datasheet (Holtek Semiconductor Inc)

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Series of Decoders

Selection Table

Function

Address

No.

Data

VT Oscillator Trig ger Package

Item No. Type

HT602L 12 2 L

√

RC oscillator DIN active “Hi” 20 DIP/20 SOP

HT604L 10 4 L

√

RC oscillator DIN active “Hi” 20 DIP/20 SOP

HT605L 9 5 L

√

RC oscillator DIN active “Hi” 20 DIP/20 SOP

HT611 14 0 —

√

RC oscillator DIN active “Hi” 20 DIP/20 SOP

Features

•

Operating voltage: 2.4V~12V

•

Low power and high noise immunity CMOS technology

•

Low standby current

•

Capable of decoding 18 bits of information

•

Pairs with HOLTEK’s 318 series of encoders

•

8~18 address pins

•

0~8 data pins

•

Trinary address setting

•

Two times of receiving check

•

Built-in oscillato r needs only a 5% resistor

•

Valid transmission indictor

•

Easily interface with an RF or an infrared transmission medium

•

Minimal external components

General Description

The 318 decoders are a series of CMOS LSIs for remote control system applications. They are paired with the 3

series of encoders. For proper operation a pair of encoder/decoder pair with the same number of address and data format should be selected (refer to the encoder/decoder cross reference tables).

The 3

series of decoders receives serial address and data from that series of encoders that are transmitted by a carrie r using an R F or a n IR transmission medium. It then compares the serial input data twice continuously with its local address. If no errors or unma tched codes

are encountered, the input data codes are decoded and then transferred to the outp ut pins. The VT pin also goes high to indicate a valid transmission.

The 3

decoders are capable of decoding 18 bits of information that consists of N bits of address and 18–N bits of data. To meet various applications they are arranged to provi de a nu mber of data pins whose range is from 0 to 8 and an address pin whose range is from 8 to 18. In addition, the 3

decoders provide various combinations of address/d ata number in different packages.

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

1 2nd Oct ’97

Function

Address

No.

Data

VT Oscillator Trigger Package

Item No. Type

HT612 12 2 M

√

RC oscillator DIN active “Hi” 20 DIP/20 SOP

HT614 10 4 M

√

RC oscillator DIN active “Hi” 20 DIP/20 SOP

HT615 9 5 M

√

RC oscillator DIN active “Hi” 20 DIP/20 SOP

HT644L 14 4 L

√

RC oscillator DIN active “Hi” 24 SOP/24 SDIP

HT646L 12 6 L

√

RC oscillator DIN active “Hi” 24 SOP/24 SDIP

HT648L 10 8 L

√

RC oscillator DIN active “Hi” 24 SOP/24 SDIP

HT651 18 0 —

√

RC oscillator DIN active “Hi” 24 SOP/24 SDIP

HT654 14 4 M

√

RC oscillator DIN active “Hi” 24 SOP/24 SDIP

HT656 12 6 M

√

RC oscillator DIN active “Hi” 24 SOP/24 SDIP

HT658 10 8 M

√

RC oscillator DIN active “Hi” 24 SOP/24 SDIP

HT682L 10 2 L

√

RC oscillator DIN active “Hi” 18 DIP

HT683L 9 3 L

√

RC oscillator DIN active “Hi” 18 DIP

HT684L 8 4 L

√

RC oscillator DIN active “Hi” 18 DIP

HT691 12 0 —

√

RC oscillator DIN active “Hi” 18 DIP

HT692 10 2 M

√

RC oscillator DIN active “Hi” 18 DIP

HT693 9 3 M

√

RC oscillator DIN active “Hi” 18 DIP

HT694 8 4 M

√

RC oscillator DIN active “Hi” 18 DIP

Note: Data type: M represents momentary type of data output.

L represents latch type of data output.

VT can be used as a momentary data output.

318 Series of Decoders

2 2nd Oct ’97

Block Diagram

Note: The address/data pins are available in various combinations

(refer to the address/data table).

Pin Description

Pin Name I/O

Internal

Connection

Description

A0~A17 I

TRANSMISSION

GATE

Input pins for address A0~A17 setting

They can be externally set to VDD , VS S, or left open. D10~D17 O CMOS OUT Output data pins DIN I CMOS IN Serial data input pin VT O CMOS OUT Valid transmission, active high OSC1 I OSCILLATOR Oscillator input pin OSC2 O OSCILLATOR Oscillator output pin VSS I — Negative power supply (GND) VDD I — Positive power supply

318 Series of Decoders

3 2nd Oct ’97

Approximate i nte r na l connection circu i t s

Absolute Maximum Ratings*

Supply Voltage...............................–0.3V to 13V

Storage Temperature.................–50

°C to 125°C

Input Voltage..................V

–0.3V to VDD+0.3V

Operating Temperature...............–20

°C to 75°C

*Note: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent

damage to the device. The se are stress ratings on ly. Functional operatio n of this device at these or any other conditions above those indicated in the operational sections of this specification is not implied and exposure to absolute maximum rating conditions for extened periods may affect device relia bility.

Electrical Characteristics

(Ta=25°C)

Symbol Parameter

Test Conditions

Min. Typ. Max. Unit

Conditions

Operating Voltage — — 3 — 12 V

STB

Standby Current

Oscillator stops

— 0.1 1

µA

12V — 2 4

µA

Operating Current 5V

No load F

OSC

=100kHz

— 0.2 1 mA

Data Output Source Current (D10~D17)

=4.5V –0.5 –1 — mA

Data Output Sink Current (D10~D17)

=0.5V 0.5 1 — mA

VT Output Source Curren t

VOH=4.5V –2 –4 — mA

VT Output Sink Current V

=0.5V 1 2 — mA

“H” Input Voltage 5V — 3.5 — 5 V

“L” Input Voltage 5V — 0 — 1 V

OSC

Oscillator Freque ncy 10V

OSC

=330kΩ

—100—kHz

318 Series of Decoders

4 2nd Oct ’97

Functional Description

Operation

The 318 series of decoders provides various combinations of address and data pins i n different packages. It is paired with the 3

series of encoders. The d ecoders receive data transmitted by the encoders a nd interpret the first N bits of the code period as address and the last 18–N bits as data (where N is the address code number). A signal on the DIN pin then activates the oscillator which in turns decodes the incoming address and data. The decoders will check the received address twice continuously. If all the received ad dress code s match the conten ts of the decoder ’s local add ress, the 18–N bits of data are decoded to activate the output pins, and the VT pin is set high to indica te a valid transmission. Th at will last until the ad dress code is incorrect or no signal has been received. The output of the VT pin is high only when the transmission is valid. Otherwise it is low always.

Output type

There are 2 types of output to select from:

•

Momentary type The data outputs follow the encoder during a

valid transmission and then reset.

•

Latch type The data outputs follow the encoder during a

valid transmission, and are then latched in this state until the next valid transmission occurs.

Flowchart

Note: The oscillator is disabled in the

standby state and activated as long as a logic “high” signal is applied to the DIN pin. i.e., the DIN should be kept “low” if there is no signal input.

318 Series of Decoders

5 2nd Oct ’97

Decoder timing

Encoder/Decoder selection tables

•

Latch type of data output

Part No.

Data

Pins

Address

Pins

VT Pair Encoder

Package

Encoder Decoder

DIP SOP SDIP DIP SOP SDIP

HT682L 2 10

√

HT680 18 — — 18 — —

HT683L 3 9

√

HT680 18 —

—18——

HT6187 18 —

HT684L 4 8

√

HT680 18 — — 18 — —

HT602L 2 12

√

HT600 20 20 — 20 20 —

HT604L 4 10

√

HT600 20 20

—2020—

HT6207 20 —

HT605L 5 9

√

HT600 20 20 — 20 20 —

HT644L 4 14

√

HT640 24 24 24 — 24 24

HT646L 6 12

√

HT640 24 24

24 — 24 24

HT6247 24 —

HT648L 8 10

√

HT640 24 24 24 — 24 24

318 Series of Decoders

6 2nd Oct ’97

•

Momentary type of data o utput

Part No.

Data

Pins

Address

Pins

VT Pair Encoder

Package

Encoder Decoder

DIP SOP SDIP DIP SOP SDIP

HT691 0 12

√

HT680 18——18——

HT692 2 10

√

HT680 18——18——

HT693 3 9

√

HT680 18 —

—18——

HT6187 18 —

HT694 4 8

√

HT680 18——18——

HT611 0 14

√

HT600 20 20 — 20 20 —

HT612 2 12

√

HT600 20 20 — 20 20 —

HT614 4 10

√

HT600 20 20

—2020—

HT6207 20 —

HT615 5 9

√

HT600 20 20 — 20 20 —

HT651 0 18

√

HT640 242424—2424

HT654 4 14

√

HT640 242424—2424

HT656 6 12

√

HT640 24 24

24 — 24 24

HT6247 24 —

HT658 8 10

√

HT640 242424—2424

318 Series of Decoders

7 2nd Oct ’97

Address/Data sequence

The following provides a table of address/data sequence for various models of the 318 series decoders. A correct device should be selecte d according to the requir ements of in dividual address an d data.

Part No.

Address/Data Bits

0~3 4 5 6~9 10 11 12 13 14 15 16 17 HT602L A0~A3 A4 — A6~A9 — A11 A12 A13 D14 D15 — — HT604L A0~A3 A4 — A6~A9 — A 11 D12 D13 D14 D15 — — HT605L A0~A3 A4 — A6~A9 — D11 D12 D13 D14 D15 — — HT611 A0~A3 A4 — A6~A9 — A11 A12 A13 A14 A15 — — HT612 A0~A3 A4 — A6~A9 — A11 A12 A13 D14 D15 — — HT614 A0~A3 A4 — A6~A9 — A11 D12 D13 D14 D15 — — HT615 A0~A3 A4 — A6~A9 — D11 D12 D13 D14 D15 — — HT644L A0~A3 A4 A5 A6~ A 9 A 10 A11 A12 A13 D14 D15 D16 D17 HT646L A 0~A3 A4 A5 A6~A 9 A10 A11 D12 D13 D14 D15 D16 D17 HT648L A 0~A3 A4 A5 A6~A 9 D10 D11 D12 D13 D14 D15 D16 D17 HT651 A0~A3 A4 A5 A6~A9 A10 A11 A12 A13 A14 A15 A16 A17 HT654 A0~A3 A4 A5 A6~A9 A10 A11 A12 A13 D14 D15 D16 D17 HT656 A0~A3 A4 A5 A6~A9 A10 A11 D12 D13 D14 D15 D16 D17 HT658 A0~A3 A4 A5 A6~A9 D10 D11 D12 D13 D14 D15 D16 D17 HT682L A0~A3 — — A6~A9 — A11 A12 — D14 D15 — — HT683L A0~A3 — — A6~A9 — A11 D12 — D14 D15 — — HT684L A 0~A3 — — A6~A9 — D11 D12 — D14 D15 — — HT691 A0~A3 — — A6~A9 — A11 A12 — A14 A15 — — HT692 A0~A3 — — A6~A9 — A11 A12 — D14 D15 — — HT693 A0~A3 — — A6~A9 — A11 D12 — D14 D15 — — HT694 A0~A3 — — A6~A9 — D11 D12 — D14 D15 — —

Note: “—” is a dummy code which is left “open” and not bonded out.

318 Series of Decoders

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