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PDF PT2240B Data sheet ( Hoja de datos )
| Número de pieza | PT2240B | |
| Descripción | Encoder IC | |
| Fabricantes | Princeton Technology | |
| Logotipo |  |
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DESCRIPTION
PT2240B is encoder utilizing CMOS Technology
specially designed for remote control applications. It
has 220 Address. It can support up to 4 Data Bits and is
housed in 8 pin SOP package. It encodes address and
data codes into a coded waveform suitable for RF
modulation. The pin assignments and application
circuit are optimized for easy PCB Layout and cost
saving advantage. Furthermore, PT2240B’s intrinsic
feature of being able to support 4 data bits
considerably reduces inventory pressures.
APPLICATIONS
• Burglar alarm system
• Car security system
• Car/Garage door controller
• Home/Office security system
• Personal alarm system
BLOCK DIAGRAM
PT2240B
Encoder IC
FEATURES
• CMOS technology
• Low power consumption
• Least external components
• High noise immunity
• Single resistor oscillator
• Operating voltage: 1.8~15V
• 4 Data pins
• 220 address codes
• Available in SOP package
• Reduction of inventory pressures
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
1 page  
PT2240B
CODE WORD
A group of Code Bits is called a Code Word. A Code Word consists of 20 Address/4 Data Bits followed by one Sync Bit.
Please refer to the diagram below:
A0 A1 A2 A3 …… A16 A17 A18 A19 D3 D2 D1 D0 Sync. bit
SINGLE RESISTOR OSCILLATOR
The built-in oscillator circuit of PT2240B allows a precision oscillator to be constructed by connecting an external resistor
(Rosc) to the OSC Pin. The typical oscillator frequency with various resistor values for PT2240B is given below:
V1.3
5 June, 2011
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet PT2240B.PDF ] | |
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