RF803E Datasheet, PDF (3/13 Pages) List of Unclassifed Manufacturers – Encoder // Decoder IIC’’s

Encoder / Decoder IC’s
Pin Descriptions RF803E
See Page 8 for typical application circuit
N/C
1
RF803
8 IP 3
VCC
TX
2
7 ^GND
RF803E
PDIP
DFN
3
6
N/C
IP 2
4
5
IP1
SOT23
Pin
Number
1
3
6
2
4
5
Name
IP 1
IP 2
IP 3
GND
TX
Vcc
Input /
Output
IP
IP
IP
IP
OP
IP
Description
Switch input 1 (active low)
Switch input 2 (active low)
Switch input 3 (active low)
Supply GND
Data output
Supply Voltage
PDIP
Pin
Number
1
2
3
4
5
6
7
8
Name
-
Vcc
TX
IP 2
IP1
-
GDN
IP3
Input /
Output
-
IP
OP
IP
IP
-
OP
IP
Description
Not Connected
Supply Voltage
Data output
Switch input 2 (active low)
Switch Input 1 (active low)
Not Connected
Ground Connection
Switch Input 3 (active low)
IP 1-3
These are the switch inputs which when operated wake up the RF803E and cause transmission.
They may be switched directly to Ground. Transmission occurs for the duration of the switch
operation.
Vcc
The power supply needs to be a stable regulated voltage between 2.5 and 5.5V with <10mV ripple.
Note that in idle mode the transmitter current drain is typically only 100nA.
GND
Ground connection
TX
Data Output, this is a standard CMOS / TTL output that may be connected directly to the data input
pin of the RF Module. In the event that this represents a load to Vcc then a buffer stage between
the data output and the RF module will be required.
DS803-7 April 04
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Page 3