HT604L_03 Datasheet, PDF (1/12 Pages) Holtek Semiconductor Inc – 318 Series of Decoders

HT604L/HT614/HT692
3¹⁸ Series of Decoders
Features
· Operating voltage: 2.4V~12V
· Low power and high noise immunity CMOS
technology
· Low standby current
· Capable of decoding 18 bits of information
· 9~10 address pins
· 2~8 data pins
· Trinary address setting
· 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
· Pair with Holtek¢s 3¹⁸ series of encoders
· HT604L/HT614: 20-pin DIP/SOP package
HT692: 18-pin DIP package
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 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 en-
coder/decoder pair with the same number of address
and data format should be selected (refer to the en-
coder/decoder cross reference tables).
The 3¹⁸ series of decoders receive 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
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 in-
formation that consists of N bits of address and 18-N
bits of data. To meet various applications they are ar-
ranged 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 combi-
nations of address/data number in different packages.
Selection Table
Function _Address
Part No.
No.
Data
No. Type
VT
HT604L
10
4
L
Ö
HT614
10
4
M
Ö
HT692
10
2
M
Ö
Oscillator
RC oscillator
RC oscillator
RC oscillator
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.
Trigger
Package
DIN active ²Hi²
DIN active ²Hi²
DIN active ²Hi²
20DIP/SOP
20DIP/SOP
18DIP
Rev. 1.10
1
January 24, 2003