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PDF PT2268 Data sheet ( Hoja de datos )
| Número de pieza | PT2268 | |
| Descripción | Remote Control Encoder | |
| Fabricantes | Princeton Technology Corp | |
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Remote Control Encoder
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2268
DESCRIPTION
PT2268 is a remote control encoder utilizing CMOS Technology specially designed for use with the
PT2128. Using a special coding technique, PT2268 increases noise immunity to a very great extent. It
is housed in 16-Pins DIP Package and has a maximum of eight (8) input channels. Its high
performance features make PT2268 a MUST in every fan and other electrical home appliance remote
control application.
PTC provides a new version of PT2268 which can be identified by the “B” mark on the lower right hand
corner of the IC’s topcode (beside the date code). Please refer to the diagram on the Order Information
Section. The difference between the old and new version is the external application circuit in the OSC1
and OSC2 pins. (see Oscillator Section)
FEATURES
• CMOS technology
• Low power consumption
• Very high noise immunity
• Wide range of operating voltage: Vcc=2.2 ~ 5.0V
• Transmits signals to a maximum of 8 channels
• Start word custom code options available (Please contact PTC for details.)
APPLICATIONS
• Fan remote control
• Air cleaner
• Humidifier
• Heater
PT2268 V2.5
-1-
April, 2006
1 page  
Remote Control Encoder
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2268
TRANSMISSION WAVEFOM
When any of the 8 keys (I1 ~ I8) is set to “High”, the TxOUT outputs one start word followed by 2
identical data words and a space. The code will be continuously outputted until the key is released. If
for any reason, the key was released during the code transmission process, the code that is being
transmitted during the key release action will still be completely outputted. Please refer to the following
diagram.
I1 ~ I8
TxOUT
S t art
Word
1st
Word
2 nd
Word
S pa c e
S t art
Word
1st
Word
2 nd
Word
S pa c e
S t art
Word
1st
Word
2 nd
Word
S pa c e
2 0m s
8 0m s
1 Frame=80ms
Note: OSC=455KHz
TRANSMISSION CODE WAVEFORM
The transmission waveforms of the Start Word and the different Data Words generated when a specific
input key (I1 ~ I8) is pressed are illustrated below (see also Transmission Code Pattern Section).
CLK
START
W1
W2
W3
W4
W5
W6
W7
W8
1
0
X
X
3X
X=0.625ms
PT2268 V2.5
-5-
April, 2006
5 Page 
Remote Control Encoder
PACKAGE INFORMATION
8 PINS, DIP, 300MIL
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2268
PT2268 V2.5
- 11 -
April, 2006
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet PT2268.PDF ] | |
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