Datasheet

UNISONIC TECHNOLOGIES CO., LTD
RCT2E
CMOS IC
ENCODER FOR REMOTE
CONTROLLER WITH FIVE
FUNCTIONS
SOP-8

DESCRIPTION
The UTC RCT2E can be used with the decoder UTC RCR2C to
provide a complete control functions to the remote-controlled toy.
The UTC RCT2E is the transmitter. It is provide five function keys
to control forward, Backward, Rightward, Leftward and Turbo
motions. Beside, a combination of these five motions can be
played.
UTC RCT2E is built with auto Power-OFF function. When input
key is pulled low, UTC RCT2E will wake up, SC and SO will
continuously send out code in RF format (Non-Carrier) and IR
format (Carrier). However, when a complete code is sent out and
the key is released, UTC RCT2E will automatically go into
powered-off mode.

DIP-14
FEATURES
* Wide and Low operating voltage range: 1.8V ~ 5.0V
* 5-function remote controller controlling forward/ backward/ turbo/
right/ left.
* Provide two transmissive interface (RF and IR) for different
application.
* Auto Power-OFF function
* Few external components needed and Oscillator with an external
resistor.
* Low Standby current and low operating current.
* Long distance Remote Control to 100M in UTC RCT2E and UTC
RCR2C pairing.
* Typical oscillator frequency:
RF: 116 ~ 140KHz.
IR: 114KHz (Carrier Frequency: 57KHz).
IR: 76KHz (Carrier Frequency: 38KHz).

ORDERING INFORMATION
Ordering Number
Lead Free
RCT2EL-D14-T
-
RCT2EL-D14-T
Halogen Free
RCT2EG-D14-T
RCT2EG-S08-R
Package
Packing
DIP-14
SOP-8
Tube
Tape Reel
(1)Packing Type
(1) T: Tube, R: Tape Reel
(2)Package Type
(2) D14: DIP-14, S08: SOP-8
(3)Green Package
(3) L: Lead Free, G: Halogen Free and Lead Free
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd.
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RCT2E

CMOS IC
MARKING
DIP-14

SOP-8
PIN CONFIGURATION
RIGHTB
1
14
LEFTB
NC
2
13
NC
GND
3
12
OSCI
BACKWARDB
4
11
OSCO
FORWARDB
5
10
PC
TURBOB
6
9
VDD
SC
7
8
SO
DIP-14


RIGHTB
1
8 NC
GND
2
7 OSCI
VDD
3
6 OSCO
SO
4
5 PC
SOP-8
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
9
PIN NAME
RIGHTB
NC
GND
BACKWARDB
FORWARDB
TURBOB
SC
SO
VDD
10
PC
11
12
14
OSCO
OSCI
LEFTB
FUNCTION
The rightward function will be selected when this pin is connected to GND.
No connection
Negative power supply
The backward function will be selected when this pin is connected to GND.
The forward function will be selected when this pin is connected to GND.
The turbo function will be selected when this pin is connected to GND.
Output pin of the encoding signal with carrier frequency
Output pin of the encoding signal without carrier frequency
Positive power supply
Power control output pin. When any function key is pulled low, PC will be high
logic.
Oscillator output pin
Oscillator input pin
The leftward function will be selected when this pin is connected to GND.
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
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RCT2E

ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Supply Voltage
Input/Output Voltage
Operating Temperature
Storage Temperature

CMOS IC
SYMBOL
VDD
TOPR
TSTG
RATINGS
-0.3 ~ 6.0
GND -0.2 ~ VDD+0.2
-10 ~ 60
-25 ~ 125
UNIT
V
V
°C
°C
ELECTRICAL CHARACTERISTICS
(VDD=4.5V, Fosc=116~140KHz, TA=25°C, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
Supply Voltage
VDD
Input Low Voltage
ViL
Function Input Pin
Operating Current
IDD
Unload
SO Driving Current
IDrSO
Load=0.7V
SC Driving Current
IDrSC
Load=0.7V
PC Driving Current
IDrPC
Load=0.7V
Stand by Current
IStandBy
Unload
Oscillator Frequency Tolerance
Ftolerance
UTC RCR2C FOSC=128KHz
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
1.8
TYP
4.5
MAX
5.0
2.3
0.6
6.5
6.5
6.5
-20
10
+20
UNIT
V
V
mA
mA
mA
mA
μA
%
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UNISONIC TECHNOLOGIES CO., LTD
BACKB
9
10
11
SO 8
VDD
PC
OSCO
LEFTB 14
13
NC
OSCI 12
UTC RCT2E
5 FORWB
6
TURBO B
7 SC
4
1 RIGHTB
2
NC
3 GND
U1
C6
D1
3.8V 104
R1
200K
R2
330
R7
6.8K
C7
47μ F
Q1
C945
crystal
R3
120K
R4
100
C2
47p
L1
4.7µH
C1
47p
R5
35K
C3
47µ F
C8
47p
C4
104
R6
100
Q2
C945
C5
47p
L2
2.7µH
C9
100p
L3
C10
10p
ANTENNA

9V
RCT2E
CMOS IC
TYPICAL APPLICATION CIRCUIT
Transmitter (FOSC = 116 ~140 KHz)
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RCT2E

CMOS IC
INFRARED APPLICATION CIRCUIT
Transmitter (FOSC = 114 KHz)

TESTING CIRCUIT
The oscillator frequency is 116 ~140KHz
200K
14
13
LEFTB NC
+
12
OSCI
10
11
OSCO
PC
9
VDD
8
SO
16 15
13
14
12
11
10
9
VI2 VO1 VI1 VDD TURBO FORWARD BACKWARD MOD
UTC RCT2E
100µF
RIGHTB NC
1
2
GND BACKWAREB FORWARDB TURBOB SC
4
5
6
7
3
UTC RCR2C
VO2 GND SI OSCI
2
3
4
1
OSCO
5
RIGHT
6
LEFT
7
LX
8
300K
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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RCT2E
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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