3
18
Series of Encoders
Features
·
·
·
·
Operating voltage: 2.4V~12V
Low power and high noise immunity CMOS
technology
Low standby current
Three words transmission
·
·
·
Built-in oscillator needs only 5% resistor
Easy interface with an RF or infrared trans-
mission media
Minimal external components
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
General Description
The 3 encoders are a series of CMOS LSIs for
remote control system applications. They are
capable of encoding 18 bits of information
which consists of N address bits and 18-N data
bits. Each address/data input is externally
trinary programmable if bonded out. It is other-
wise set floating internally. Various packages of
18
the 3 encoders offer flexible combinations of
18
programmable address/data to meet various
application needs. The programmable ad-
dress/data is transmitted together with the
header bits via an RF or an infrared transmis-
sion medium upon receipt of a trigger signal.
The capability to select a TE trigger type or a
DATA trigger type further enhances the appli-
18
cation flexibility of the 3 series of encoders.
Selection Table
Function
Part No.
HT600
HT640
HT680
HT6187
HT6207
HT6247
Address
No.
9
10
8
9
10
12
Address/
Data No.
5
8
4
0
0
0
Data Dummy
No. Code No.
0
0
0
3
4
6
4
0
6
6
4
0
Oscillator
RC oscillator
RC oscillator
RC oscillator
RC oscillator
RC oscillator
Trigger
TE
TE
TE
D12~D15
D12~D17
Package
20 DIP/20 SOP
24 SOP/24 SDIP
18 DIP
20 DIP/20 SOP
24 SOP/24 SDIP
RC oscillator D12,D14,D15 18 DIP/20 SOP
Note: Address/Data represents addressable pins or data according to the decoder requirements.
1
July 8, 1999
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
