Programmable Encoder IC
PT2241
PT2241 v1.3
Page 1
Written August 1998
Princeton Technology Corp.
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
DESCRIPTION
PT2241 is a tri-state programmable encoder utilizing CMOS Technology specially designed for remote
control applications. It encodes address and data codes into a coded waveform suitable for RF modula-
tion and can provide up to 11 Address which may be designed by a one-time programmable process.
PT2241 can support up to 4 Data Bits, thereby reducing inventory pressures. It is housed in 8 or 16-pin
DIP or SO Package. The pin assignments and application circuit are optimized for easy PCB Layout
and cost saving advantage.
FEATURES
CMOS Technology
Low Power Consumption
Least External Components
High Noise Immunity
Single Resistor Oscillator
Operating Voltage: 1.8~15 V
Up to 4 Data Pins
Up to 3
11
Address Codes
One-Time Programmable Process
Available in SO or DIP Package
Reduction of Inventory Pressures
APPLICATIONS
Burglar Alarm System
Car Security System
Car/Garage Door Controller
Home/Office Security System
Personal Alarm System
Programmable Encoder IC
PT2241
PT2241 v1.3
Page 2
Written August 1998
Princeton Technology Corp.
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
8
7
6
5
VSS
S1
VPG
N3
D3
N2
D2
PGM
S0
VDD
DOUT
OSC
D0/CLK
N0/CODE
D1
N1
PT2241 (16 PINS)
VCC
VPG
PGM
N0/CODE
VDD
DOUT
OSC
D0/CLK
PT2241 (8 PINS)
APPLICATION CIRCUITS
V ss
V P G
P GM
N 0/CODE
VD D
D OU T
OS C
D0/CLK
PT2241
RF
12V
Rosc
+
_
Note: In order that IC protection is assured, please make sure that a diode is connected between the
battery and the VDD. If the diode is not connected and the battery polarity was inverted, the IC will
fail.
Programmable Encoder IC
PT2241
PT2241 v1.3
Page 3
Written August 1998
Princeton Technology Corp.
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
V ss
S 1
V P G
N 3
D 3
N 2
D 2
P G M
S 0
V D D
D O U T
O S C
D 0/C LK
N 0/C O D E
D 1
N 1
RF
Rosc
12V
PT2241
+
_
Note: In order that IC protection is assured, please make sure that a diode is connected between the
battery and the VDD. If the diode is not connected and the battery polarity was inverted, the IC
will fail.
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