Datasheet HT614, HT604L, HT692 Datasheet (Holtek Semiconductor Inc)

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¢s318series of encoders

·

9~10 address pins

·

2~8 data pins

·

Trinary address setting

·

Applications

Burglar alarm system

·

Smoke and fire alarm system

·

Garage door controllers

·

Car door controllers

·

General Description

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

18

The 3
and data from that series of encoders that are
transmitted by a carrier using an RF or an IR
transmission medium. It then compares the se­rial input data twice continuously with its local
address. If no errors or unmatched codes are

series of decoders receive serial address

18

series of encoders. For

HT604L/614/692

318Series of Decoders

Two times of receiving check

·

Built-in oscillator needs only a 5% resistor

·

Valid transmission indicator

·

Easy interface with an RF or an infrared

·

transmission medium
Minimal external components

·

Package information: refer to Selection

·

Table

Car alarm system

·

Security system

·

Cordless telephones

·

Other remote control systems

·

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

18

The 3
of information that consists of N bits of address
and 18-N bits of data. To meet various applica­tions they are arranged to provide a number 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
combinations of address/data number in differ
ent packages.

decoders are capable of decoding 18 bits

18

decoders provide various

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1 April 24, 2000

Selection Table

HT604L/614/692

Function

Part No. No. Type

Address

No.

HT604L 10 4 L

HT614 10 4 M

HT692 10 2 M

Data

VT Oscillator Trigger Package

RC oscillator

Ö

RC oscillator

Ö

RC oscillator

Ö

Note: Data type: M stands for momentary type data output.

L stands for latch type data output.

VT can be used as a momentary data output.

Block Diagram

OSC1OSC2

DIN

O scillator

B u ffe r

Sync. D etector

D ivider

D a ta D e te c to r

C om parator C om parator

D a ta S h ift

R egister

Latch C ircuit

C ontrol Logic

DIN active ²Hi²

DIN active ²Hi²

DIN active ²Hi²

Data

20 DIP/SOP

20 DIP/SOP

18 DIP

VT

Address

Buffer Transm issio n G ate C ircuit

VDD VSS

Note: The address/datapins are available in various combinations (refer to the address/data table).

2 April 24, 2000

Pin Assignment

Latch series Momentary series

HT604L/614/692

10-A ddress
4 -D a t a

1

A11

2

D12

3

D13

4

D14

5

D15

VT

6

DIN

7

OSC2

8

9

OSC1

10

VSS

H T 604L

20 D IP/S O P

10-A ddress
4 -D a t a

A11

20

VDD

19

A9

18

A8

17

A7

16

A6

A4

15

A3

14

A2

13

12

A1

11

A0

OSC2

OSC1

D12

D13

D14

D15

VT

DIN

VSS

1

2

3

4

5

6

7

8

9

10

VDD

20

19

A9

18

A8

17

A7

16

A6

A4

15

A3

14

A2

13

A1

12

A0

11

H T 614

20 DIP/SO P

10-A ddress
2 -D a t a

Pin Description

Pin Name I/O

A0~A12 I

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

VDD

¾¾

¾¾

Internal

Connection

TRANSMISSION

GATE

Description

Input pins for address A0~A12 setting
They can be externally set to VDD, VSS or left open.

Negative power supply, ground

Positive power supply

A11

A12

D14
D15

VT

DIN

OSC2

OSC1

VSS

1

2

3
4

5

6

7

8

9

HT692

18 D IP

18

VDD

17

A9

16

A8

15

A7

14

A6

A3

13

12

A2

A1

11

10

A0

Approximate internal connections

TRANSM ISSION

GATE

CMOS OUT OSCILLATOR

CMOS IN

OSC1

EN

OSC2

3 April 24, 2000

Absolute Maximum Ratings

HT604L/614/692

Supply Voltage ...............................-0.3V to 13V

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

-0.3V to VDD+0.3V

SS

Storage Temperature.................-50°Cto125°C

Operating Temperature ..............-20°Cto75°C

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi

mum Ratings² may cause substantial damage to the device. Functional operation of this de
vice at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme conditions may affect device reliability.

Electrical Characteristics

Ta=25°C

Test Conditions

Symbol Parameter

V

I

I

DD

STB

DD

Operating Voltage

Standby Current

Operating Current 5V

Data Output Source Current

I

O

(D10~D17)

Data Output Sink Current
(D10~D17)

I

V

V

f

OSC

VT

IH

IL

VT Output Source Current

VT Output Sink Current

²H² Input Voltage

²L² Input Voltage

Oscillator Frequency 10V

V

DD

Conditions

¾¾

5V

Oscillator stops

12V

No load
f

=100kHz

OSC

V

=4.5V

OH

5V

=0.5V

V

OL

V

=4.5V

OH

5V

V

=0.5V

OL

5V

5V

R

¾

¾

=330kW¾

OSC

Min. Typ. Max. Unit

3

¾

¾

0.1 1

¾

¾

0.2 1 mA

-0.5 -1 ¾

0.5 1

-2 -4 ¾

12

3.5

0

¾

¾

100

12 V

24

¾

¾

5V

1V

¾

mA

mA

mA

mA

mA

mA

kHz

-

-

4 April 24, 2000

Functional Description

HT604L/614/692

Operation

18

The 3
binations of address and data pins in different
packages. It is paired with the 3

series of decoders provide various com

18

series of
encoders. The decoders receive data transmit
ted by the encoders and 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 acti
vates the oscillator which in turns decodes the
incoming address and data. The decoders will
check the received address twice continuously.
If all the received address codes match the con
tents of the decoder¢s local address, the 18-N
bits of data are decoded to activate the output
pins, and the VT pin is set high to indicate a
valid transmission. That will last until the ad
dress code is incorrect or no signal has been re
ceived. The output of the VT pin is high only
when the transmission is valid. Otherwise it is
always low.

Output type

There are two 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

-

-

No

Pow er on

Standby m ode

C ode in ?

-

Yes

Address bits

-

m atched ?

Yes

Store data

No

-

-

No

No

Match

previous stored

data ?

Yes

2 tim es

of checking

com pleted ?

Yes

Latch/M om entary

data to output &

a c tiv a te V T

Address or

data error ?

Yes

No

Note: T he oscillator is disabled in the

standby state and activated as long as
a logic ²high² signal is applied to the
DIN pin. i.e., the DIN should be kept
²low² if there is no signal input.

D isable V T &

ignore the rest of

th is w o rd

5 April 24, 2000

Decoder timing

Encoder

Transm ission

Enable

Encoder

Data Out

D ecoder V T

M om entary

Data Out

Latched

Data Out

< 1 word

3 w ords

2 w ords

check

1/2 clock period 1/2 clock period

Encoder/Decoder selection tables

·

Latch type of data output

Data

Part No.

Pins

Address

Pins

VT Pair Encoder

HT604L 4 10

Transm itted

C ontinuously

14

2 c lo c k s

check

HT600 20 20

Ö

HT6207 20

HT604L/614/692

3 w ords

Encoder Decoder

DIP SOP SKDIP DIP SOP SKDIP

¾

14

2 c lo c k s

Package

¾

20 20

¾

·

Momentary type of data output

Part No.

Data

Pins

Address

Pins

HT692 2 10

HT614 4 10

VT Pair Encoder

HT680 18

Ö

HT600 20 20

Ö

HT6207 20

6 April 24, 2000

Package

Encoder Decoder

DIP SOP SKDIP DIP SOP SKDIP

¾¾

¾

18

¾¾

20 20

¾

¾

HT604L/614/692

Address/Data sequence

The following provides a table of address/data sequence for various models of the 3
correct device should be selected according to the sindividual address and data requirements.

18

series decoders. A

Part No.

Address/Data Bits

0~3 4 5 6~9 10 11 12 13 14 15 16 17

HT604L A0~A3 A4

HT614 A0~A3 A4

HT692 A0~A3

Note:

²¾² is a dummy code which is left ²open² and not bonded out.

¾¾

¾

¾

A6~A9

A6~A9

A6~A9

A11 D12 D13 D14 D15

¾

A11 D12 D13 D14 D15

¾

A11 A12

¾

Oscillator frequency vs supply voltage

fo s c

(S cale)

3.00

2 .7 5

2 .5 0

2 .2 5

2 .0 0

1.75

1.50

1.25

(100 kH z) 1.00

0.75

0.50

0.25

2345678910

¾

11 12 12.5

D14 D15

Rosc(9)

120k

150k

180k

220k

270k

330k

390k
470k
560k

680k
820k
1M

1.5M
2M

¾¾

¾¾

¾¾

DD

V

(V D C )

The recommended oscillator frequency is f

7 April 24, 2000

OSCD

(decoder) @ f

OSCE

(encoder)

Application Circuits

HT604L/614/692

Rosc

R eceive r C ircuit

1

A11

2

A12

3

D14

4

D15

5

VT

6

DIN

7

OSC2

8

OSC1

9

VSS

HT692

VDD

A9

A8

A7

A6

A3

A2

A1

A0

V

DD

18

17

16

15

14

13

12

11

10

R eceive r C ircuit

1

A11

2

D12

3

D13

4

D14

5

D15

6

VT

7

DIN

8

OSC2

Rosc

9

OSC1

10

VSS

H T 614/H T604L

Note: Typical infrared receiver: PIC-12043T/PIC-12043C (KODENSHI CORP.)

or LTM9052 (LITEON CORP.)

Typical RF receiver: JR-200 (JUWA CORP.)

RE-99 (MING MICROSYSTEM, U.S.A.)

VDD

A9

A8

A7

A6

A4

A3

A2

A1

A0

V

DD

20

19

18

17

16

15

14

13

12

11

8 April 24, 2000

HT604L/614/692

Holtek Semiconductor Inc. (Headquarters)

No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]

Holtek Semiconductor Inc. (Taipei Office)

5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
Fax: [phone] (International sales hotline)

Holtek Semiconductor (Hong Kong) Ltd.

RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong
Tel: [phone]
Fax: [phone]

Copyright ã 2000 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
used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications
will be suitable without further modification, nor recommends the use of its products for application that may pres
ent a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior
notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.

9 April 24, 2000

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