Datasheet RX-2B Datasheet (SILAN)

Silan
Semiconductors





REMOTE CONTROLLER WITH FIVE
FUNCTIONS

DESCRIPTION

The TX-2B/RX-2B is a pair of CMOS LSIs designed for remote
controlled car applications. The TX-2B/RX-2B has five control keys
for controlling the motions (i.e. forward, backward, rightward, leftward
and the turbo function ) of the remote controlled car.

FEATURES

* Wide operating voltage range (VCC=1.5~5.0V)
* Low stand-by current
* Auto-power-off function for TX-2B
* Few external components are needed

ORDERING INFORMATION

Part No. Package

TX-2B DIP-14-300-2.54
RX-2B DIP-16-300-2.54

BLOCK DIAGRAM

TX-2B/RX-2B

DIP-14

TX-2B

RX-2B

DIP-16

OSCI

OSCO

RIGHT

LEFT

TURBO

FORWARD

BACKWARD

FOSC

13

12

11

14

Oscillator

1

6

5

4

Latch

Circuit

TRANSMITTER TX-2B Block Diagram

TEST B

2

Timing

Generator

Encoding

Circuit

GND

Logic

3

9

V

DD

PC

10

SO

8

SC

7

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2002.03.29

1





Silan
Semiconductors



BLOCK DIAGRAM

OSCI

4

OSCO

5

SI

3

VO1

15

VI1

14

LDB

9

RDB

8

VI2

16

VO2

1



Oscillator

AMP

Control

Logic



Timing

Generator

Decoding

Circuit

2

GND

RECEIVER RX-2B Block Diagra m

Computer

PLA

Latch

Circuit

TX-2B/RX-2B

V

13

DD

RIGHT

6
7

LEFT
TURBO

12

BACKWARD

10

FORWARD

11

PIN CONFIGURATION

RIGHT

TEST

GND

ACKWARD

FORWARD

TURBO

SC

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

1

2

3

4

5

6

7

14

LEFT

13

FOSC

12

OSCI

11

OSCO

TX-2B

10

PC

9

DD

V

8

SO

VO2

GND

OSCI

OSCO

RIGHT

LEFT

ROB

1

2

SI

3

4

5

6

7

8

16

VI2

15

VO1

VI1

14

13

DD

V

RX-2B

12

TURBO

FORWARD

11

10

BACKWARD

9

LDB

Rev: 1.0 2002.03.29

2





Silan
Semiconductors



ABSOLUTE MAXIMUM RATINGS

Characteristic Symbol Value Unit

Supply Voltage V
Input / Output Voltage VIN,V
Operating Temperature T
Storage Temperature T

ELECTRICAL CHARACTERISTICS

(V

1. TX-2B

=4.0V, F

DD

Characteristic Symbol Min Typ Max Unit

Operating Voltage V
Operating Current I
Stand-By Current I
DC O/P Driving Current I
AC O/P Driving Current I
AC O/P Frequency F

2. RX-2B (V

=4.0V,F

DD

=128KHz, T

osc

=128KHz, T

osc



OPR

=25°C, unless otherwise specified.)

amb

DD

DD

STB
drive
drive
audio

=25°C, unless otherwise specified.)

amb

TX-2B/RX-2B

DD

OUT

stg

1.5 4.0 5.0 V

-- -- 2.0 mA

-- -- 10
5----mA
5----mA

0.5 -- 1.0 kHz

0.3~5.0 V

GND-0.3~VDD+0.3 V

-10~65

-25~125

°C
°C

µA

characteristic Symbol Min Typ Max Unit

Operating Voltage V
Operating Current I
O/P Driving Current I
O/P Sinking Current I
Effect Decoding Frequency Variation F

tolerance

DD

DD

drive

sink

1.5 4.0 5.0 V

-- -- 3.0 mA
1----mA
1----mA

-20 -- 20 %

PIN DESCRIPTION

1. TX-2B

Pin No. Symbol Description

1 RIGHT The rightward function will be selected, if this pin is connected to GND
2 TEST This pin is used for testing mode
3 GND Negative power supply
4 BACKWARD The backward function will be selected, if this pin is connected to GND
5 FORWARD The forward function will be selected, if this pin is connected to GND

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

3

(To be continued)

Rev: 1.0 2002.03.29





Silan
Semiconductors





(Continued)

Pin No. Symbol Description

6 TURBO The turbo function will be selected if this pin is connected to GND
7 SC Output pin of the encoding signal with carrier frequency
8 SO Output pin of the encoding signal without carrier frequency

9VDDPositive power supply
10 PC Power control output pin
11 OSCO Oscillator output pin
12 OSCI Oscillator input pin
13 FOSC This pin is used for testing mode
14 LEFT The leftward function will be selected, if this pin is connected to GND

TX-2B/RX-2B

2. RX-2B

Pin No. Symbol Description

1 VO2 Inverter 2 output pin for power amplify

2 GND Negative power supply

3 SI Input pin of the encoding signal

4 OSCI Oscillator input pin

5 OSCO Oscillator output pin

6 RIGHT Rightward output pin

7 LEFT Leftward output pin

8 ROB Rightward function disable, if this pin is connected to GND

9 LDB Leftward function disable, if this pin is connected to GND
10 BACKWARD Backward output pin
11 FORWARD Forward output pin
12 TURBO TURBO output pin
13 V
14 VI1 Inverter 1 input pin for power amplify
15 VO1 Inverter 1 output pin for power amplify
16 VI2 Inverter 2 input pin for power amplify

DD

Positive power supply

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2002.03.29

4





Silan
Semiconductors



CODE FORMAT

1. ENCODE RULE

(A).Bit Format (W1 is used for function codes,W2 for start codes)

1KHz



TX-2B/RX-2B

W1

W2

1KHz 50% Duty cycle

500Hz 75% Duty cycle

(B).Date Format

W2 W2 W2 W2 (n) X W1 W2 W2 W2 W2 (n)X W1 W2 W2 W2 W2



W2 W2 W2 W2

1234

start code

W2

1234

W1W1 W1 W1

1word

nxW1

function code

W1 W1

n-th

W2 W2 W2



Number Of Function Code ( N) W1 Function Key Decode Result

4 End Code
10 Forward Forward
16 Forward & Turbo Forward
22 Turbo Turbo
28 Turbo & Forward & Left Forward & Left
34 Turbo & Forward & Right Forward & Right
40 Backward Backward
46 Backward & Right Backward & Right
52 Backward & Left Backward & Left
58 Left Left
64 Right Right

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2002.03.29

5





Silan
Semiconductors



2. ENCODE/DECODE TIMING

Any function key



TX-2B/RX-2B

Encode output

Decode output

SI

Decode output

1st word 2nd word 3rd word 12345678

end code

9ms9ms

8ms

T=17ms+(nW1)x1ms

(n) W1

T

8ms

1ms

TESTING CIRCUIT

(The oscillator frequency of TX-2B, RX-2B is 128KHz, the oscillator resistor is 160KΩ and 250KΩ respectively)

forward

f

osc

=128kHz

turbo

14 13 12 11 810 9

VCC=3V

F



100

1 2 3 4 75 6 1 2 3 4 75 6 8

TX-2B RX-2B

14 13 12 11 10 91516

backward

left

right

backward

turbo

forward

f

osc

=128kHz

right

left

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2002.03.29

6





Silan
Semiconductors



TYPICAL APPLICATION CIRCUIT

TRANSMITTER



R

14 13 12 11 10 9 8

1 2 3 4 5 6 7

osc

=500k

TX-2B

TX-2B/RX-2B

V

R.F.

CIRCUIT

CC

¡

SI

RECEIVER

V

CC

R.F.

CIRCUIT

GND

100

right

left



F

4.3V

backward

15 14 13 12 11 10 916

1 2 3 4 5 6 7 8

turbo

forward

power
switch

RX-2B

500k

¡

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2002.03.29

7





Silan
Semiconductors



INFRARED APPLICATION CIRCUIT

TRANSMITTER

F

DC:3V



100



f

osc

=114kHz

TX-2B/RX-2B

¡

RECEIVER

DC:5V

14 13 12 11 10 9 8

TX-2B

2 3 4 5 6 71

Left

Right

16 15 14 13 12 11 910

F



100

1 2 3 4 5 6 87

RX-2B

f

osc

Backw

=114KHz

ard

Frontwar

1~4.7

Photo Diode

d

Turbo

C8050

100K

1815

¡

OUT

IR

Receiver

V

DD

GND

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2002.03.29

8





Silan
Semiconductors



RECOMMENDED APPLICATION CIRCUIT

1

2

14

13



LR

LED

1.5k

TX-2B/RX-2B

VDD=9V

¡

3

B

4

F

5

TURBO

6

7 8

TX-2B

12

11

10

¡

¡

390

220k

XTAL

Rosc=160K

9

203P

F



47

27MHz

3.0V

Q1

C945

L1

203P



H

2.2
47P

68P

¡

100

¡

68P

33K

2.2

Q2

C945

L2



H

151P

L4



H

6.8
L3

7T 0.3mm (¶)

x 5mm(Core)

¡

151P

100

203P

103P

203P

222P

C2 47P

F



Q1

L1

1.1

¡

820

C1 102P

1

¡

3.3k

2

F



4.7

3.9MO

180k

¡

R2

3

4

RX-2B

5

Rosc=250K

right

6

left

7

8

4P

7T0.3mm (¶)

x 5mm(Core)

L2

C3 18PC4203P

3.3k

¡

¡

220F

/16V

3.3k

104P

103P

16

390

¡

15

14

501P

V

DD1

=12V,R=330
=9V,R=220

470



F

/16V

¡

¡

1N4148

R1

¡

1k

C945

1k

¡

1kO

V

DD1

3.0V

330

¡

¡

3.9M

13

turbo

12

forward

11

backward

10

9

R3

¡

1k

C945 C945

Q1: C9018,C1815,C380,C382
Q2,Q3,Q4: 5610,C8550,B772
Q5,Q6: C8050,5609,D882
Q7,Q8: B564,C8550,B772
Q9,Q10: D471,C8050,D882

Q3

Q2

C945

Q5

473P

R1,R2,R3,R4=80~150¡,are
changeable with the V
V

DD2.

Q7 Q8

M

Q9 Q10

473P

V

DD1

100



F

/16V

Q4

R2

M

C945

Q6

DD1

and

R4

1k

104P

V

DD2

¡

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2002.03.29

9





Silan
Semiconductors





PACKAGE OUTLINE

DIP-14-300-2.54 UNIT: mm

2.54

0.25

B

6.35

TX-2B/RX-2B

0.05

B

7.62

0.25

19.55B0.3

0.5MIN

0.46B0.08

1.52

4.36MAX3.00MIN

2.40MAX

15 degree

DIP-16-300-2.54 UNIT: mm

2.54

0.05

0.25

B

6.35

0.5MIN

19.55B0.3

7.62

1.52

4.36MAX3.00MIN

B

0.25

15 degree

0.99B0.3

0.46B0.08

1.27MAX



HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2002.03.29

10



