Holtek HT692 318 series of decoder Datasheet

318 Series of Decoders
Features
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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 oscillator needs only a 5% resistor
Valid transmission indictor
Easily interface with an RF or an infrared
transmission medium
Minimal external components
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Car alarm system
Security system
Cordless telephones
Other remote control systems
Applications
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Burglar alarm system
Smoke and fire alarm system
Garage door controllers
Car door controllers
General Description
The 318 decoders are a series of CMOS LSIs for
remote control system applications. They are
paired with the 318 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).
are 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.
The 318 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 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 318 decoders provide various combinations of address/data number in different
packages.
The 318 series of decoders receives serial address 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
Selection Table
Function Address
No.
Item
Data
VT
No.
Type
Oscillator
Trigger
Package
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
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2nd Oct ’97
318 Series of Decoders
Function Address
No.
Item
Data
VT
No.
Type
Oscillator
Trigger
Package
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.
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2nd Oct ’97
318 Series of Decoders
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
TRANSMISSION Input pins for address A0~A17 setting
GATE
They can be externally set to VDD, VSS, or left open.
A0~A17
I
D10~D17
O
CMOS OUT
DIN
I
CMOS IN
VT
O
CMOS OUT
OSC1
I
OSCILLATOR
Oscillator input pin
OSC2
O
OSCILLATOR
Oscillator output pin
VSS
I
—
Negative power supply (GND)
VDD
I
—
Positive power supply
Output data pins
Serial data input pin
Valid transmission, active high
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2nd Oct ’97
318 Series of Decoders
Approximate internal connection circuits
Absolute Maximum Ratings*
Supply Voltage ............................... –0.3V to 13V
Storage Temperature................. –50°C to 125°C
Input Voltage..................VSS–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. These are stress ratings only. Functional operation 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 reliability.
(Ta=25°C)
Electrical Characteristics
Symbol
Parameter
VDD
Operating Voltage
ISTB
Standby Current
IDD
Operating Current
IO
IVT
Test Conditions
Min.
Typ.
Max.
Unit
3
—
12
V
—
0.1
1
µA
—
2
4
µA
—
0.2
1
mA
VOH=4.5V
–0.5
–1
—
mA
VOL=0.5V
0.5
1
—
mA
VOH=4.5V
–2
–4
—
mA
VOL=0.5V
1
2
—
mA
VDD
Conditions
—
—
5V
Oscillator stops
12V
Data Output Source Current
(D10~D17)
5V
5V
Data Output Sink Current
(D10~D17)
VT Output Source Current
No load
FOSC=100kHz
5V
VT Output Sink Current
VIH
“H” Input Voltage
5V
—
3.5
—
5
V
VIL
“L” Input Voltage
5V
—
0
—
1
V
FOSC
Oscillator Frequency
10V
—
100
—
kHz
ROSC=330kΩ
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2nd Oct ’97
318 Series of Decoders
Functional Description
Operation
Flowchart
18
The 3 series of decoders provides various combinations of address and data pins in different
packages. It is paired with the 318 series of
encoders. The decoders receive data transmitted 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 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 address codes match the contents
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 address
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.
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.
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2nd Oct ’97
318 Series of Decoders
Decoder timing
Encoder/Decoder selection tables
• Latch type of data output
Package
Part No.
Data Address
VT
Pins
Pins
Pair Encoder
Encoder
DIP
HT682L
2
10
√
HT683L
3
9
√
Decoder
SOP SDIP
HT680
18
—
HT680
18
—
HT6187
18
—
DIP
SOP SDIP
—
18
—
—
—
18
—
—
HT684L
4
8
√
HT680
18
—
—
18
—
—
HT602L
2
12
√
HT600
20
20
—
20
20
—
HT604L
4
10
√
HT600
20
20
—
20
20
—
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
—
HT640
24
24
24
—
24
24
HT648L
8
10
√
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2nd Oct ’97
318 Series of Decoders
• Momentary type of data output
Package
Part No.
Data
Pins
Address
Pins
VT
Pair Encoder
Encoder
DIP
Decoder
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
—
20
20
—
HT6207
20
—
HT615
5
9
√
HT600
20
20
—
20
20
—
HT651
0
18
√
HT640
24
24
24
—
24
24
HT654
4
14
√
HT640
24
24
24
—
24
24
HT656
6
12
√
HT640
24
24
24
—
24
24
HT6247
24
—
HT640
24
24
24
—
24
24
HT658
8
10
√
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2nd Oct ’97
318 Series of Decoders
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 selected according to the requirements of individual address and data.
Address/Data Bits
Part No.
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
—
A11
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~A9 A10
A11
A12
A13
D14
D15
D16
D17
HT646L
A0~A3
A4
A5
A6~A9 A10
A11
D12
D13
D14
D15
D16
D17
HT648L
A0~A3
A4
A5
A6~A9 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
A0~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.
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2nd Oct ’97
318 Series of Decoders
Oscillator frequency vs supply voltage
The recommended oscillator frequency is FOSCD (decoder) ≅ FOSCE (encoder).
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2nd Oct ’97
318 Series of Decoders
Package Information
Latch series
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2nd Oct ’97
318 Series of Decoders
Momentary series
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2nd Oct ’97
318 Series of Decoders
Momentary series
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2nd Oct ’97
318 Series of Decoders
Application Circuits
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2nd Oct ’97
318 Series of Decoders
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.)
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2nd Oct ’97
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