TX-5B/RX-5B
TOY CAR REMOTE CONTROLLER WITH NINE 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.
DIP-22
DIP-16
FEATURES
* Wide operating voltage range
TX-5B: (VDD=2.2~12.0V)
RX-5B: (VDD=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
TX-5B/RX-5B
SDIP-22
ORDERING INFORMATION
Device
Package
DIP-16-300-2.54
DIP-22-400-2.54
SDIP-22-300-2.54
BLOCK DIAGRAM
TEST
2
OSCI
14
Oscillator
13
Timing
Generator
OSCO
11 V
DD
RIGHT
1
16
6
5
4
Latch
Circuit
Encoding
Circuit
Logic
LEFT
12
PC
10
SO
7
SC
TURBO
FORWARD
BACKWARD
15
F1
9
F2
8
F34
3
GND
TX-5B Block Diagram
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
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:
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REV:2.1
2004.08.03
Page 1 of 10
TX-5B/RX-5B
BLOCK DIAGRAM
(continued)
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
VI2
VO2
17
F3
15
F4
RX-5B Block Diagram
ABSOLUTE MAXIMUM RATINGS
Characteristics
DC Supply Voltage
Input/Output Voltage
Operating Temperature
Storage Temperature
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.
Symbol
V
DD
V
IN
,V
OUT
T
opr
T
stg
Value
0.3 ~ 5.0
GND-0.2V ~ V
DD
+0.2V
-10 ~ +60
-25~+125
Unit
V
V
°C
°C
ELECTRICAL CHARACTERISTICS
TX-5B
(V
DD
=9V, F
osc
=128KHz, T
amb
=25°C, unless otherwise specified.)
Characteristics
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
I
drive
I
drive
F
audio
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
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http
:
www.silan.com.cn
REV:2.1
2004.08.03
Page 2 of 10
TX-5B/RX-5B
RX-5B
(V
DD
=9V, F
osc
=128KHz, T
amb
=25°C, unless otherwise specified.)
Characteristics
Operating Voltage
Operating Current
O/P Driving Current
O/P Driving Current(F1,F2)
Effect Decoding Frequency Variation
Symbol
V
DD
I
DD
I
drive
I
df
F
tolerance
Min.
3.0
--
5.0
5.0
-50%
Typ.
9.0
30.0
--
--
--
Max.
12.0
--
--
--
50%
Unit
V
mA
mA
mA
--
PIN CONFIGURATION
PIN DESCRIPTION
TX-5B
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
RIGHT
TEST
GND
BACKWARD
FORWARD
TURBO
SC
F34
F2
SO
V
DD
PC
OSCO
OSCI
F1
LEFT
This pin is used for testing mode
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, 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
Description
The rightward function will be selected when this pin is connected to GND
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http
:
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REV:2.1
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Page 3 of 10
TX-5B/RX-5B
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
VT
RDB
LDB
LRTD
BACKWARD
FORWARD
TURBO
V
DD
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.
If VT 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
Description
Inverter 2 output pin for signal amplify
FUNCTION DESCRIPTION
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 =
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http
:
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REV:2.1
2004.08.03
Page 4 of 10
TX-5B/RX-5B
F
F = Forward
F1 = Function1
B
T
R
L
F1
F3
F4
F2
L = Left
B = Backward
F2 = Function2
T = Turbo
F3 = Function3
R = Right
F4 = Function4
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
BACKWARD
BACKWARD+RIGHT
BACKWARD+LEFT
TURBO+BACKWARD
TRUBO+BACKWARD+RIGHT
TURBO+BACKWARD +LEFT
LEFT
RIGHT
FUNCTION1
FORWARD+FUNCTION1
FORWARD+TURBO+FUNC1
TURBO+FUNC1
BACKWARD+FUNC1
BACKWARD+TURBO+FUNC1
LEFT+FORWARD+FUNC1
RIGHT+FORWARD+FUNC1
LEFT+ BACKWARD +FUNC1
RIGHT+ BACKWARD +FUNC1
LEFT+FUNCTION1
RIGHT+FUNCTION1
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
Output Status
F
H
H
H
H
H
H
H
H
H
H
H
H
B
T
R
L
F1
F2
F3
F4
Note: (1) In the table, blank=F0. Rows from "FUNCTION1" to "RIGHT+FUNCTION1" (the last row) are similar for
FUNCTION2, FUNCTION2, FUNCTION2. Thus, we can see from the table that we have more than 50
states of function combinations from 8 control keys.
(2) H = high level.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http
:
www.silan.com.cn
REV:2.1
2004.08.03
Page 5 of 10
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