ER400TRS EASY RADIO, ER400TRS Datasheet - Page 11

• Manufacturer Part Number: ER400TRS
• Description: MODULE, TX, 433MHZ
• Manufacturer: EASY RADIO

Specifications of ER400TRS

• External Depth: 4mm
• External Length / Height: 14mm
• External Width: 37mm
• Frequency: 433.92MHz
• Operating Temperature Max: 65°C
• Operating Temperature Min: -20°C
• Output Power: 10mW
• Rf Sensitivity: -100dBm
• Range: 250m

Pin Description
Checklist
LPRS Data Sheet
Pin
No
1
2
3
4
5
6
7
8
9
ERx00-02 Series V2.3
1. The module operates internally from an on board 3.3 Volt low drop regulator. The logic levels of the
2. The serial inputs and outputs are intended for connection to a UART or similar low voltage logic
3. The ‘Host Ready Input’ should be tied to 0 Volt (Ground) if not used, when handshaking is enabled.
4. The ‘Serial Data In’ should be tied to Vcc if not used. (Receive mode only).
5. Outputs will drive logic operating at 5 Volts and inputs will be correctly driven by logic operating at 5
input/output pins are therefore between 0 Volt and 3.3 Volts. (See specifications/performance data).
device. Do not connect any of the inputs or outputs directly to an RS232 port. The transceiver
module may be permanently damaged by the voltages (+/- 12V) present on RS232 signal lines. See
Application Circuit (Figure 11) for typical connection to an RS232 port via MAX232 interface IC.
Volts (CMOS & TTL logic levels).
Name
Antenna
RF Ground
RSSI
Busy Output
Serial Data Out
Serial Data In
Host Ready
Input
Vcc
Ground
Datasheet Revision 2.3 Sept 2005
Description
50Ω RF input/output. Connect to suitable antenna.
RF ground. Connect to antenna ground (coaxial cable screen
braid) and local ground plane. Internally connected to other
Ground pins.
Received Signal Strength Indication
Digital Output to indicate that transceiver is ready to receive
serial data from host.
Digital output for received data to host
Digital input for serial data to be transmitted
Digital Input to indicate that Host is Ready to receive serial
data from transceiver
Positive supply pin. +2.5 to +5.5 Volts. This should be a
‘clean’ noise free supply with less than 25mV of ripple.
Connect to supply 0 Volt and ground plane
ER400TS Transmitter, ER400RS Receiver & ER400TRS Transceiver
ER900TS Transmitter, ER900RS Receiver & ER900TRS Transceiver
Easy-Radio ‘02’ (2
Copyright LPRS 2005.
nd
Generation Modules)
Notes
CTS function
RTS function
Page 11 of 30