TX2B / RX2B Remote Control Encoder Decoder IC Pair

Name: RX-2B TX-2B
Brand: HIMA TRONICS
SKU: HMJ657
Price: 400.00 KES
Availability: OutOfStock

= 5-Channel Wireless Remote Control IC Set for Arduino =

The TX2B and RX2B are a matched pair of CMOS LSI chips designed for wireless remote control applications . The TX2B serves as the encoder/transmitter IC, while the RX2B functions as the decoder/receiver IC. Together they provide 5channel control (Forward, Backward, Left, Right, and Turbo) for remotecontrolled cars, robots, and automation projects .

Complete encoder/decoder pair for 5-channel wireless control

Requires external RF circuits (27MHz typical) - not just the ICs alone

Wide operating voltage: 1.5V5.0V for TX2B, 1.5V5.0V for RX2B

= Technical Specifications =

Parameter	TX-2B	RX-2B
Supply Voltage	1.5V - 5.0V DC	1.5V - 5.0V DC
Stand-by Current	~10µA (low)	~10µA (low)
Operating Current	~2mA	~2mA
Control Channels	5 Channels	5 Channels
Output Type	Encoded Signal	Parallel Outputs
Auto Power Off	Yes	-
Package Type	DIP / SOP	DIP / SOP

= Key Features =

5Channel Control Forward, backward, right, left, and turbo functions

Low Power Consumption Standby current as low as 10µA

Wide Voltage Range - 1.5V to 5.0V operation

Auto Power Off TX2B saves battery life when not in use

Easy Integration - Few external components required

Versatile Applications - Toy cars, robotics, and remote switching

== Applications ==

Remote-controlled toy cars and robots
Wireless automation and switching systems
5-channel remote control projects
Arduino-based wireless control systems
DIY remote control vehicles
Industrial remote switching
Educational projects

= How It Works =

The TX2B encodes button presses into a digital signal. This encoded signal is then modulated onto an RF carrier (typically 27MHz) using external RF circuits . The RX2B receives and demodulates the signal, then decodes it to activate corresponding output pins .

Transmitter Side: Push buttons → TX-2B encodes → RF transmitter circuit → Antenna

Receiver Side: Antenna → RF receiver circuit → RX-2B decodes → Output pins

Both ICs require external RF circuits - they are codec ICs, not complete transceivers

Typical carrier frequency is 27MHz using crystal oscillator

The encoded signal at TX2B pin 8 is without carrier needs RF modulation

= Pin Configuration (Typical) =

TX-2B (Encoder)

Pin	Function	Description
K1-K5	Key Inputs	5 control buttons
VCC	Power	1.5V-5.0V DC
GND	Ground	0V
OSC	Oscillator	External resistor sets frequency
OUT	Signal Output	Encoded data output

RX-2B (Decoder)

Pin	Function	Description
OP1-OP5	Outputs	5 channel outputs (active high)
VCC	Power	1.5V-5.0V DC
GND	Ground	0V
IN	Signal Input	Demodulated signal input
OSC	Oscillator	External resistor sets frequency

Output pins go high when corresponding transmitter button is pressed

Use transistor drivers for relays or high-current loads

= Why Choose TX2B / RX2B? =

Complete 5-channel wireless control solution

Low power for battery-operated projects

Simple interface with only few external components

Industry-standard remote control IC pair

Ideal for DIY robotics and RC projects

√ Compatible with Arduino and other microcontrollers

√ Works with 1.5-5V systems

√ Proven design for remote control applications

√ Cost-effective wireless solution

√ Easy to implement with typical circuits

= Important Notes =

These are encoder/decoder ICs - require external RF circuits for wireless communication

Use with 27MHz RF transmitter and receiver circuits

Both ICs must use same oscillator frequency

Recommended operating voltage: 3V typical

Reference circuit diagrams available online for complete implementation

Data sheet from Silan Microelectronics provides detailed application circuits

The TX2B / RX2B IC pair provides a complete 5channel wireless control solution for your remotecontrolled projects. Easy to implement and reliable, this encoder/decoder set is perfect for DIY robotics, RC vehicles, and automation systems.