OTX-418-HH-KF3-MS Linx Technologies Inc, OTX-418-HH-KF3-MS Datasheet - Page 4

• Manufacturer Part Number: OTX-418-HH-KF3-MS
• Description: XMITTER KEYFOB 418MHZ 3 BUTTON
• Manufacturer: Linx Technologies Inc

Specifications of OTX-418-HH-KF3-MS

• Function: Transmitter
• Frequency: 418MHz
• Applications: Keyless Entery, Home Automation, Wireless Audio/Video
• Interface: Handheld, 3 Button
• Data Rate - Maximum: 9.6 kbps
• Features: 3 buttons, 1000 ft. Operating Distance
• Voltage - Supply: 2.1 V ~ 3.6 V
• Package / Case: Keyfob
• Board Size: 56.6 mm x 34.8 mm x 11.4 mm
• Minimum Operating Temperature: - 40 C
• Supply Voltage (min): 2.1 V
• Product: RF Modules
• Maximum Frequency: 418 MHz
• Supply Voltage (max): 3.6 V
• Maximum Operating Temperature: + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Sensitivity: -
• Modulation Or Protocol: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

TYPICAL APPLICATIONS
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The signal sent by the Keyfob transmitter can be
received by the LR Series receiver module or the LT
Series transceiver module. The outstanding sensitivity
of the LR Series receiver offers the best range when
used with the Keyfob transmitter. The receiver module
is then connected directly to the MS Series decoder,
which will decode the transmitted signal.
When a button is pressed on the transmitter, a
corresponding line on the decoder will go high. This can
then be connected to external circuitry to perform
whatever function is required by the application.
The decoder must learn the transmitter’s address
before they can work together. This is done by taking
the LEARN line on the decoder high, typically with a
pushbutton. The MODE_IND line will start switching (if a LED is attached, this
will cause it to flash) indicating that the decoder is in Learn Mode. Press any of
the buttons on the transmitter to initiate a transmission. Take the LEARN line
high again to exit Learn Mode and the system is ready for use. The figure below
shows a schematic for a typical application.
The Keyfob is set to 9,600bps,
so SEL_BAUD0 should be tied
high and SEL_BAUD1 tied low.
The decoder has several unique
features, such as Latch Mode,
Receiver Control, and TX_ID.
If the LATCH line is tied to V
the outputs will go high on the
first transmission, then low on
the second. It is shown tied low,
so the outputs will be momentary
(high for as long as a signal is
received instructing the decoder
to make them high).
The RX_CNTL line can be
connected to the PDN line of the
receiver and the decoder will
activate the receiver with a 10%
duty cycle This greatly reduces
the average current consumption
of the system. The adjacent
figure shows it tied to ground, but to use this feature, connect the RX_CNTL line
of the decoder directly to the receiver’s PDN line.
The TX_ID line will output a number associated with the originating transmitter /
encoder. Application Note AN-00156 shows how to use this feature.
Data guides for the modules, the MS encoder, and the MS decoder can be found
on the Linx Technologies web site, www.linxtechnologies.com.
CC
,
Figure 6: LR Receiver and MS Decoder Schematic
GND
220
VCC
VCC
GND
10
1
2
3
4
5
6
7
8
9
LICAL-DEC-MS001
1
2
3
4
5
6
7
8
D6
D7
SEL_BAUD0
SEL_BAUD1
GND
GND
LATCH
RX_CNTL
TX_ID
MODE_IND
RXM-LR
NC
NC
NC
GND
VCC
PDN
RSSI
DATA
LICAL-DEC-MS001
DATA_IN
GND
ANT
NC
NC
NC
NC
NC
NC
LEARN
RXM-***-LR
VCC
VCC
D5
D4
D3
D2
D1
D0
16
15
14
13
12
11
10
9
20
19
18
17
16
15
14
13
12
11
GND
GND
VCC
Figure 7: OTX-***-HH-KF#-MS Schematic Diagram
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