Silan
Semiconductors
REMOTE CONTROLLER WITH SEVEN
FUNCTIONS
DESCRIPTION
The TX-5B/RX-5B are a pair of CMOS LSIs designed for remote
controlled car applications. They have nine control keys controlling
the motions (i.e. forward, backward, rightward, leftward, trigger 1--
trigger 4 functions and the turbo function) of the remote controlled
car.
The TX-5B is housed in DIP-16 package, and the RX-5B is
housed in DIP-22 package.
TX-5B/RX-5B
DIP-16
DIP-22
FEATURES
* Wide operating voltage range
TX-5B: (V
DD
=2.2~12.0V)
RX-5B: (V
DD
=3.0~12.0V)
* Very Low stand-by current for TX-5B
* Auto-power-off function for TX-5B
* Few external components are needed
* Built-in 3.6V zener for RX-5B
* 9 functions remote controller controlling: forward,backward, right,
left, turbo, trigger 1-- trigger 4 functions
ORDERING INFORMATION
Part No.
TX-5B/RX-5B
Package
DIP-16-300-2.54
DIP-22-400-2.54
PIN CONFIGURATION
VO2
GND
RIGHT
TEST
GND
BACKWARD
FORWARD
TURBO
SC
F34
1
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
VI2
VO1
VI1
VDD
TURBO
F3
FORWAR
F4
BACKWAR
LRTD
LDB
1
2
3
4
5
6
7
8
16
15
14
13
LEFT
SI
F1
OSCI
OSCI
OSCO
OSCO
F1
PC
RIGHT
VDD
F2
SO
LEFT
F2
V
T
RDB
RX-5B
17
16
15
14
13
12
TX-5B
12
11
10
9
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2002.03.26
1
Silan
Semiconductors
BLOCK DIAGRAM
TEST
TX-5B/RX-5B
2
OSCI
14
Oscillator
13
Timing
Generator
OSCO
RIGHT
1
16
6
5
4
Latch
Circuit
Encoding
Circuit
Logic
11 V
DD
LEFT
12
PC
10
SO
7
SC
TURBO
FORWARD
BACKWARD
15
F1
9
F2
8
F34
3
GND
TX-5B Block Diagram
OSCI
4
Oscillator
Timing
Generator
Counter
19 V
DD
OSCO
5
3
21
20
12
13
11
10
22
1
2
GND
Control
Logic
Latch
Circuit
AMP
Decoding
Circuit
SI
VO1
VI1
PLA
7
RIGHT
9
LEFT
LDB
LRTD
RDB
VT
18
TURBO
14
BACKWARD
16
FORWARD
6
8
F1
F2
F3
F4
VI2
VO2
17
15
RX-5B Block Diagram
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2002.03.26
2
Silan
Semiconductors
ABSOLUTE MAXIMUM RATINGS
Characteristic
DC Supply Voltage
Input/Output Voltage
Operating Temperature
Storage Temperature
TX-5B/RX-5B
Symbol
V
DD
V
IN
,V
OUT
Topr
Tstg
Value
0.3 ~ 5.0
GND-0.2V ~ V
DD
+0.2V
-10 ~ +60
-25~+125
Unit
V
V
°C
°C
COMMENT
Never allow a stress to exceed the values listed under "Absolute Maximum Ratings", otherwise the device would
suffer from a permanent damage. Nor is a stress at the listed value be allowed to persist over a period, since an
extended exposure to the absolute maximum rating condition may also affect the reliability of the device, if not
causing a damage thereof.
ELECTRICAL CHARACTERISTICS
TX-5B
(V
DD
=9V,Fosc=128KHz, Tamb=25°C
,unless otherwise specified.)
Parameter
Operating Voltage
Operating Current
Stand-By Current
DC O/P Driving Current(RF)
AC O/P Driving Current(IR)
AC O/P Frequency
Symbol
V
DD
I
DD
I
STB
Idrive
Idrive
Faudio
Min
2.2
--
--
--
--
--
Typ
9.0
--
1.0
10.0
6.0
500
Max
12.0
1.5
1000
--
--
--
Unit
V
mA
µA
mA
mA
Hz
RX-5B
(V
DD
=9V,Fosc=128KHz, Tamb=25°C
,unless otherwise specified.)
Parameter
Operating Voltage
Operating Current
O/P Driving Current
O/P Driving Current(F1,F2)
Effect Decoding Frequency Variation
Symbol
V
DD
I
DD
Idrive
Idf
Ftolerance
Min
3.0
--
5.0
5.0
-50%
Typ
9.0
30.0
--
--
--
Max
12.0
--
--
--
50%
Unit
V
mA
mA
mA
--
PIN DESCRIPTION
TX-5B
Pin No.
1
2
3
Symbol
RIGHT
TEST
GND
Description
The rightward function will be selected when this pin is connected to GND
This pin is used for testing mode
Negative power supply
(To be continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2002.03.26
3
Silan
Semiconductors
(Continued)
TX-5B/RX-5B
Description
Pin No.
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
BACKWARD
FORWARD
TURBO
SC
F34
F2
SO
VDD
PC
OSCO
OSCI
F1
LEFT
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, if this pin is connected to GND
Output pin of the encoding signal with carrier frequency
F3 and F4 function select (sequential trigger)
F2 function select
Output pin of the encoding signal without carrier frequency
Positive power supply
Power control output pin
Oscillator output pin
Oscillator input pin
F1 function select
The leftward function will be selected when this pin is connected to GND
RX-5B
Pin No.
1
2
3
4
5
6,8,17,15
7
9
10
11
12
13
14
16
18
19
20
21
22
Symbol
VO2
GND
SI
OSCI
OSCO
F1, F2,F3,F4
RIGHT
LEFT
V
T
RDB
LDB
LRTD
BACKWARD
FORWARD
TURBO
VDD
VI1
VO1
VI2
Negative power supply
Input pin of the encoding signal
Oscillator input pin
Oscillator output pin
F1,F2,F3,F4 function output pin
Rightward output pin
Leftward output pin
Auto Shut-OFF input pin.
Description
Inverter 2 output pin for signal amplify
If V
T
voltage exceeds 1.4V, all outputs shut off automatically.
Right disable pin.
Left disable pin.
Left/right turbo disable pin
Backward output pin
Forward output pin
TURBO output pin
Positive power supply
Inverter 1 input pin for signal amplify
Inverter 1 output pin for signal amplify
Inverter 2 input pin for signal amplify
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2002.03.26
4
Silan
Semiconductors
FUNCTION DESCRIPTION
TX-5B/RX-5B
The TX-5B/RX-5B are a pair of CMOS LSIs designed for remote controlled car applications. The TX-5B/RX-5B
have nine control keys controlling the motions (i.e. forward, backward, rightward, leftward, and trigger1--trigger4
functions and the turbo function) of the remote controlled car.
1. OVER-CURRENT PROTECTION
An Auto Shut-Off mechanism is built-in according to Toy Safety Requirement and effective during over-current
situation in motor driver. The active high input applying to this Auto Shut-Off pin will turn off the motor. (VT pin,
when unused, has to be connected to ground. The transfer point=1.4V)
2. DATA FORMAT
F1="1"
500Hz, 3/4 duty
F0="0"
500Hz, 1/4 duty
3. CODING METHOD
3.1 when a trigger pin is triggered, its data code will correspond to the data format of "F1", while the remaining pins
will have the data format of "F0".
3.2. Data string: start code + data code +parity code + end code
start code = F1 F1 F1 F1 F0
data code =
F
B
T
R
L
F1
F3
F4
F2
F = Forward
F1 = Function1
B = Backward
F2 = Function2
T = Turbo
F3 = Function3
R = Right
F4 = Function4
L = Left
parity code = for parity check
end code = for (latch data)
* Data code can be any combination of F,B,T,R,L,F1,F2,F3,F4 except for F&B, R&L, F3&F4.
OUTPUT TABLES
Function
FORWARD
LEFT+FORWARD
RIGHT+FORWARD
TURBO
TURBO+FORWARD
TURBO+LEFT+ FORWARD
TURBO+RIGHT+FORWARD
H
H
H
Output Status
F
H
H
H
H
H
H
H
H
(To be continued)
H
H
H
B
T
R
L
F1
F2
F3
F4
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2002.03.26
5
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