HT6026_09 Datasheet, PDF (1/12 Pages) Holtek Semiconductor Inc – Remote Control Encoder

HT6026
Remote Control Encoder
Features
· Operating voltage: 4V~18V
· Low standby current
· Low power and high noise immunity CMOS
technology
· 3⁹ difference codes
Applications
· Burglar alarm system
· Smoke and fire alarm system
· Garage door controllers
· Car alarm system
· Two transmission words minimum
· Built-in oscillator needs only 5% resistor
· Interface with RF or infrared transmission medium
· Minimal external components
· 16-pin DIP/NSOP package
· Security system
· Cordless telephones
· Other remote control systems
General Description
The HT6026 is a CMOS LSI encoder designed for use in
remote control system. It is capable of encoding 9 bits of
information which consists of N address bits and 9–N
data bits. Each address/data input is externally trinary
programmable by external switches. The programma-
ble address/data is transmitted along with the header
bits via an RF or an infrared transmission medium upon
receipt of a trigger signal (TE).
The HT6026 is pin compatible with the MC145026.
Pin Assignment
AD0 1
AD1 2
AD2 3
AD3 4
AD4 5
AD5 6
AD6 7
VSS 8
16 V D D
15 D O U T
14 TE
13 O S C 3
12 O S C 2
11 O S C 1
10 A D 8
9 AD7
H T6026
1 6 D IP -A /N S O P -A
Block Diagram
O SC2 O SC3
O SC1
TE
O s c illa to r
9
T r a n s m is s io n
G a te C ir c u it
¸ 4 D iv id e r
D a ta S e le c t
& B u ffe r
¸ 9 C o u n te r
& 1 of9
D ecoder
S ync.
C ir c u it
T r in a r y
D e te c to r
DOUT
AD0
AD8
VDD VSS
Rev. 1.10
1
February 20, 2009