Philips Switch TDA8443A User Manual

INTEGRATED CIRCUITS  
DATA SHEET  
TDA8443A  
I2C-bus controlled YUV/RGB switch  
1995 Mar 07  
Product specification  
Supersedes data of November 1992  
File under Integrated Circuits, IC02  
Philips Semiconductors  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
BLOCK DIAGRAM  
outputs  
B/ (B Y)  
input  
G/Y  
input  
R/ (R Y)  
GND  
SYNC  
output  
clamp pulse  
generator  
V
SDA SCL S0 S1 S2  
13 14 15 16 17  
P
input  
18  
19  
20  
21  
22  
23  
24  
2
I C-BUS INTERFACE/  
DECODER  
TDA8443A  
A4  
A3  
A2  
A1  
FAST  
SWITCHING  
B3  
B2  
B1  
MATRIX  
RGB/YUV  
CLAMP PULSE  
GENERATOR  
CLAMP  
CLAMP CLAMP  
CLAMP CLAMP  
CLAMP  
4
9
8
12  
11  
10  
7
6
5
2
3
1
ON  
input  
B/ (B Y)  
input  
G/Y  
input  
R/ (R Y) internal B/ (B Y)  
input voltage input  
G/Y  
input  
R/ (R Y)  
input  
SYNC2  
fast  
switching  
SEL  
SYNC1  
MLD003  
channel 1  
channel 2  
Fig.1 Block diagram.  
3
1995 Mar 07  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
PINNING  
SYMBOL  
SEL  
PIN  
DESCRIPTION  
1
select input  
(non-I2C-bus mode only)  
SYNC2  
2
synchronization input for  
Channel 2  
FS  
3
4
5
6
7
8
fast switching input  
handbook, halfpage  
SEL  
SYNC2  
FS  
1
2
3
4
5
6
7
8
9
24 CLAMP  
R/±(RY)IN  
G/Y IN  
R or (RY) signal input  
G or Y signal input  
23 SYNC  
B/±(BY)IN  
VINT  
B or (BY) signal input  
internal voltage supply  
22 GND  
R/ (R Y) IN  
G/Y IN  
21 R/ (R Y) OUT  
20 G/Y OUT  
19 B/ (B Y) OUT  
SYNC1  
synchronization input for  
Channel 1  
B/ (B Y) IN  
V INT  
ON  
9
ON input  
TDA8443A  
V
P
18  
R/(RY)IN  
G/Y IN  
B/(BY)IN  
SDA  
10 R or (RY) signal input  
11 G or Y signal input  
SYNC1  
17 S2  
16 S1  
15 S0  
14 SCL  
13 SDA  
12 B or (BY) signal input  
13 serial data input/output; I2C-bus  
14 serial clock input; I2C-bus  
15 address selection input 0  
16 address selection input 1  
17 address selection input 2  
18 supply voltage  
ON  
R/ (R Y) IN 10  
G/Y IN 11  
SCL  
S0  
B/ (B Y) IN 12  
S1  
MLD004  
S2  
VP  
B/(BY)OUT  
G/Y OUT  
R/(RY)OUT  
GND  
19 B or (BY) signal output  
20 G or Y signal output  
21 R or (RY) signal output  
22 ground  
SYNC  
CLAMP  
23 synchronization output  
24 clamping pulse generator  
input/output  
Fig.2 Pin configuration.  
1995 Mar 07  
4
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
I2C-bus mode  
FUNCTIONAL DESCRIPTION  
The protocol for the devices in I2C-bus mode is shown  
in Fig.3.  
The circuit contains two sets of inputs (see Fig.1). Both  
channels can receive RGB or YUV signals. Each set of  
inputs has its own synchronization input, which internally  
generates a pulse to clamp the inputs. The internal  
clamping pulse can also be controlled by a signal (e.g. a  
sandcastle pulse) applied to pin 24. The pulse will occur  
during the time that the signal at pin 24 is between  
5.5 and 6.5 V. If both a sync signal and a pin 24 signal are  
used the signal should be applied to pin 24 via a 1 kΩ  
resistor.  
Table 1 Protocol bit description  
BIT  
DESCRIPTION  
start condition  
MA2 to MA0 address selection bits; see Table 2  
STA  
ACK  
acknowledge bit  
D7  
channel selection bit; see Table 3  
matrix selection bit; see Table 3  
gain control bits; see Table 4  
fast switching priority bit; see Table 5  
output state control bits; see Table 6  
stop condition  
RGB signals of Channel 2 can be matrixed to YUV signals.  
D6  
The outputs can be set in a high impedance OFF state,  
which allows the use of seven devices in parallel  
(I2C-bus mode).  
D5 to D3  
D2  
D1 and D0  
STO  
The circuit can be controlled by an I2C-bus compatible  
microcontroller or directly by DC voltages. The fast  
switching input can be operated via pin 16 of the  
peritelevision connector.  
STA  
1
1
0
1
MA2 MA1 MA0  
0
ACK D7  
D6  
D5 D4  
D3 D2  
D1 D0 ACK STO  
MSA003  
See Table 1.  
Fig.3 I2C-bus protocol.  
1995 Mar 07  
5
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
Table 2 Address selection  
ADDRESS SELECT PINS(1)(2)  
ADDRESS SELECT BITS  
S2 (PIN 17)  
S1 (PIN 16)  
S0 (PIN 15)  
MA2  
MA1  
MA0  
(3)  
(3)  
(3)  
L
L
L
L
L
H
L
0
0
0
1
1
1
1
0
1
1
0
0
1
1
1
0
1
0
1
0
1
L
H
H
L
L
H
L
H
H
H
H
L
H
L
H
H
H
Notes  
1. L = LOW level input voltage.  
2. H = HIGH level input voltage.  
3. = non-I2C-bus operation.  
Table 3 Mode control bits D7 and D6  
MODE  
D7  
0
D6  
0
FUNCTION  
0
1
2
Channel 2 selected, no matrix  
Channel 2 selected, matrix active  
Channel 1 selected  
0
1
1
0
1
1
not allowed  
Table 4 Gain setting (see also Table 9)  
D5  
0
D4  
0
D3  
A1  
A2, A3, A4  
B1, B3  
B2  
0.45  
1
0
1
0
1
0
1
0
1
1
1
1
1
1  
1
0
0
0
1
not allowed  
0
1
1
2
2
2
2
1
2
1
2
1
1  
1  
1
0.45  
0.45  
1
1
0
1
0
1
1
1
1
1
1
1  
0.45  
Matrix equations  
The relationship between output and input signals of the matrix is as follows:  
Y = 0.3R + 0.59G + 0.11B  
RY = 0.7R 0.59G 0.11B  
BY = 0.3R 0.59G + 0.89B  
1995 Mar 07  
6
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
Table 5 Priority/fast switching bit D2  
Table 6 Output state control bits  
FAST SWITCHING  
D1  
D0  
PIN 9  
X(1)  
L
FUNCTION  
D2  
MODE  
(PIN 3)  
0
1
1
1
X(1)  
0
OFF  
OFF  
ON  
0
X(1)  
0 to 2, depending on  
D7, D6  
0
H
X(1)  
1
0.4 V  
2
1
ON  
Note  
Note  
1. X = don't care.  
1. X = don't care.  
Power-on reset  
If the circuit is switched on in the I2C-bus mode, all bits of D0 to D7 are set to zero.  
Table 7 Non-I2C-bus mode (S2 = S1 = S0 = L)  
CONTROL  
GAIN SETTINGS  
A1 A4, A3, A2  
MODE SWITCHED BY  
FS (PIN 3)  
B1, B3  
B2  
PIN 13  
PIN 14  
PIN 1  
L
L
L
L
L
H
L
2 or 0  
2 or 0  
2 or 1  
2 or 0  
2 or 0  
2 or 0  
2 or 1  
2 or 0  
1
1
1
1
2
2
2
2
1
2
1
1
1
2
1
1
1
1
1
1
L
H
H
L
1  
1  
1
0.45  
0.45  
1
L
H
L
H
H
H
H
L
H
L
1
1
H
H
1  
1  
0.45  
0.45  
H
Table 8 Fast switching input (pin 3)  
Table 9 ON input (pin 9)  
FS  
MODE SELECTED  
ON  
FUNCTION  
0.4 V mode 2  
1 to 3 V mode 0 or mode 1 as set by control  
L
OFF; no output signal; high impedance  
OFF-state  
H
function is determined in Table 7  
1995 Mar 07  
7
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
LIMITING VALUES  
In accordance with the Absolute Maximum System (IEC 134).  
SYMBOL  
VP  
PARAMETER  
MIN.  
MAX.  
14  
UNIT  
supply voltage (pin 18)  
input voltage (pin 13)  
input voltage (pin 14)  
input voltage any other pin  
maximum output current  
V
V
V
V
VI(SDA)  
VI(SCL)  
Vn  
0.3  
0.3  
0.3  
14  
14  
VP + 0.3  
20  
IO(max)  
Tamb  
Tstg  
mA  
°C  
°C  
°C  
operating ambient temperature  
IC storage temperature range  
maximum junction temperature  
0
+70  
55  
+125  
+125  
Tj  
CHARACTERISTICS  
VP = 12 V; Tamb = 25 °C; unless otherwise specified.  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN.  
TYP.  
MAX. UNIT  
Supply  
VP  
supply voltage (pin 18)  
supply current  
10.8  
12.0  
13.2  
90  
V
IP  
65  
mA  
RGB/YUV channels  
Gabs  
absolute gain difference  
(programmed value)  
0
0
10  
10  
%
%
Grel  
relative gain difference  
between Y output and the  
(RY) and (BY) channel  
outputs  
between any other two  
channels  
0
5
%
II  
input current  
0.5  
7
1.0  
30  
30  
30  
µA  
|Z19-22  
|Z20-22  
|Z21-22  
B
|
|
|
output impedance (pin 19)  
output impedance (pin 20)  
output impedance (pin 21)  
bandwidth  
7
7
3 dB; mode 0 or 2  
+3 dB; mode 0 or 2  
±3 dB; mode 1  
all inputs of one source  
connected together  
25  
12  
10  
MHz  
MHz  
MHz  
ns  
tdiff  
mutual time difference at output  
25  
Vo(p-p)  
maximum output amplitude of YUV gain × 1  
2.1  
4.2  
30  
V
signals (peak-to-peak value)  
gain × 2  
V
αct  
crosstalk  
note 1; fi = 5 MHz; between  
dB  
inputs of same source  
note 1; between same source  
fi = 10 MHz  
50  
40  
dB  
dB  
αoff  
isolation (OFF state)  
1995 Mar 07  
8
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
SYMBOL  
PARAMETER  
CONDITIONS  
RY = 1.05 V (p-p)  
BY = 1.33 V (p-p)  
Y = 0.34 V (p-p)  
MIN.  
TYP.  
MAX. UNIT  
Gdiff(p-p)  
differential gain at nominal output  
signals (peak-to-peak value)  
10  
%
%
%
dB  
10  
10  
S/N  
signal-to-noise ratio  
nominal input; B = 5 MHz;  
note 2  
50  
SVRR  
VO  
supply voltage ripple rejection  
note 3  
30  
5.3  
dB  
V
DC output levels during clamping  
Synchronization channels  
Gdiff  
B
gain difference (programmed value)  
10  
2.5  
%
bandwidth  
3 dB  
+3 dB; gain × 1  
±3 dB; gain × 2  
50  
20  
13  
MHz  
MHz  
MHz  
V
Vi(p-p)  
input amplitude of sync signal for  
correct operation of clamp pulse  
generator (peak-to-peak value)  
0.2  
|Z23-22  
|
output impedance (pin 23)  
20  
30  
Vo(p-p)  
maximum undistorted output  
amplitude (pin 23)  
2.5  
V
(peak-to-peak value)  
VO  
DC output level on top of sync pulse  
1.5  
1.9  
2.4  
V
I2C-bus inputs for SDA, SCL  
VIH  
VIL  
IIH  
HIGH level input voltage  
3
VP  
1.5  
10  
10  
V
LOW level input voltage  
HIGH level input current  
LOW level input current  
0.3  
V
µA  
µA  
IIL  
I2C-bus output for SDA (open collector)  
VOL LOW level output voltage  
Address selection inputs for S0, S1, S2  
IOL = 3 mA  
0.4  
V
VIH  
VIL  
IIH  
HIGH level input voltage  
LOW level input voltage  
HIGH level input current  
LOW level input current  
3
VP  
0.4  
10  
0
V
0.3  
50  
V
0
µA  
µA  
IIL  
10  
Fast switching input  
VIH  
VIL  
IIH  
IIL  
HIGH level input voltage  
1
3
V
LOW level input voltage  
HIGH level input current  
LOW level input current  
switching time  
0.3  
100  
0.4  
500  
V
0
µA  
µA  
ns  
ns  
10  
20  
tsw  
td  
see Fig.5  
see Fig.5  
switching delay  
1995 Mar 07  
9
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN.  
TYP.  
MAX. UNIT  
Select input  
VIH  
VIL  
IIH  
HIGH level input voltage  
LOW level input voltage  
HIGH level input current  
LOW level input current  
3
VP  
V
0.3  
50  
0.4  
10  
0
V
0
µA  
µA  
IIL  
10  
ON input  
VIH  
VIL  
IIH  
HIGH level input voltage  
LOW level input voltage  
HIGH level input current  
LOW level input current  
3
VP  
1.5  
10  
10  
V
0.3  
V
µA  
µA  
IIL  
Notes  
1. Crosstalk is defined as the unwanted data transfer from an output, driven at nominal level, to other inputs and outputs  
on the IC and is expressed as a ratio in dBs.  
Vo (p p)  
Vno (rms)  
2. Signal-to-noise ratio = 20log  
(B = 5 MHz)  
----------------------  
VRR (supply)  
3. Supply voltage ripple rejection = 20log  
-----------------------------------------  
VRR (at the output)  
1995 Mar 07  
10  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
TIMING CHARACTERISTICS  
I2C-bus load conditions: 4 kpull-up resistor to +5 V; 200 pF capacitor to GND;  
all values are referenced to VIH = 3 V and VIL = 1.5 V; see Fig.4.  
SYMBOL  
tBUF  
PARAMETER  
CONDITIONS  
MIN.  
TYP.  
MAX.  
time bus must be free before start  
set-up time for start condition  
hold time for start condition  
SCL and SDA LOW time  
SCL HIGH time  
4.7  
4.7  
4.0  
4.7  
4.0  
µs  
µs  
µs  
µs  
µs  
µs  
µs  
ns  
µs  
µs  
µs  
µs  
tSU;STA  
tHD;STA  
tLOW  
tHIGH  
tr  
SCL and SDA rise time  
SCL and SDA fall time  
1.0  
0.3  
2
tf  
tSU;DAT  
tHD;DAT  
tSU;ACK  
tHD;ACK  
tSU;STO  
data set-up time (write)  
data hold time (write)  
250  
1.0  
note 1  
acknowledge set-up time  
acknowledge hold time  
set-up time for stop condition  
0
4.7  
Note  
1. Timing tHD;DAT deviates from the I2C-bus specification. After reset has been activated, a delay of 50 µs must occur  
before transmission may be resumed.  
SDA  
(WRITE)  
t
t
t
BUF  
HD; DAT  
LOW  
t
t
SU; ACK  
HD; ACK  
t
t
f
r
SCL  
t
t
t
SU; STA  
LOW  
HIGH  
t
SU; STO  
t
t
HD; STA  
SU; DAT  
MLD005  
Fig.4 I2C-bus timing diagram.  
1995 Mar 07  
11  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
fast switching  
switching  
delay  
input signal  
90 %  
output signal  
50 %  
(YUV)  
10 %  
MLD006  
switching time  
Fig.5 Fast switching signal diagram.  
1995 Mar 07  
12  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
APPLICATION INFORMATION  
Table 10 Channel input/output information  
INPUT 1  
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.3 V  
INPUT 2  
OUTPUT  
MODE  
D5  
D4  
D3  
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.6 V  
2
1
1
1
0
0
0
0
1
1
1
R = 0.75 V  
G = 0.75 V  
B = 0.75 V  
S = 0.3 V  
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.6 V  
1
2
1
2
0
2
0
1
1
1
1
1
1
1
1
0
0
1
1
0
0
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.3 V  
Y = 0.68 V  
U = 2.66 V  
V = 2.10 V  
S = 0.6 V  
R = 0.75 V  
G = 0.75 V  
B = 0.75 V  
S = 0.3 V  
Y = 0.68 V  
U = 2.66 V  
V = 2.10 V  
S = 0.6 V  
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.3 V  
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.6 V  
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.3 V  
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.6 V  
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.3 V  
Y = 0.68 V  
U = 2.66 V  
V = 2.10 V  
S = 0.6 V  
Y = 0.34 V  
U = 1.33 V  
V = 1.05 V  
S = 0.3 V  
Y = 0.68 V  
U = 2.66 V  
V = 2.10 V  
S = 0.6 V  
1995 Mar 07  
13  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
outputs  
Y
outputs  
SYNC CLAMP  
V
V
SDA  
SCL  
S0  
15  
S1  
16  
S2  
17  
P
(B Y)  
(R Y)  
GND  
P
4.7  
kΩ  
1 nF  
13  
14  
18  
19  
20  
21  
22  
23  
24  
TDA8443A  
12  
11  
10  
9
8
7
6
5
4
3
2
1
4.7  
µF  
4.7  
µF  
47  
nF  
47  
nF  
47  
nF  
47  
nF  
47  
nF  
47  
nF  
22  
nF  
(B Y)  
Y
(R Y)  
ON  
SYNC1 internal  
voltage  
SEL  
B
G
R
FS  
17  
SYNC2  
7
9
11 13  
15  
19  
channel 1  
(colour decoder)  
8
10 12 14 16 18 20  
MLD007  
channel 2  
(peritelevision connector)  
Fig.6 Application diagram (example).  
1995 Mar 07  
14  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
When the synchronization pulse is over, the current  
source is switched off and the voltage at pin 24 will rise  
to its higher level. Because of the time constant at  
pin 24, the restoration will take some microseconds.  
The voltage at pin 24 is also sensed internally and at  
the time it is between 0.456VP and 0.544VP, a time  
pulse is generated and used for the clamping action.  
Input clamps  
The R, G, B respectively (RY), Y and (BY) video signals  
are AC-coupled to the IC where they are clamped on the  
black level. The timing information for this clamping action  
is derived from the associated synchronization signal  
SYNC, which could also consist of the composite video  
information signal CVBS. The syncsignal is AC-coupled to  
the IC where it is clamped on top-sync level, information  
obtained from this action is used to generate the clamp  
pulses.  
2. Using a sandcastle pulse (external clamping)  
If an associated sandcastle pulse is available, it can  
also be used as a clamping pulse. In this event the  
sandcastle pulse should be connected to pin 24, the  
top of the clamping pulse should be between 0.544VP  
and 0.456VP. The timing of the internal clamping pulse  
will be equal to the timing of the higher part of the  
sandcastle pulse. If the sync signal is also connected,  
the current sink will also become active during the  
synchronization pulses. This means that the  
sandcastle pulse should be connected to pin 24 via a  
1 kdropping resistor. In this event only the  
sandcastle pulse at pin 24 will be influenced during  
sync pulses, but the sandcastle pulse at the  
The clamp pulses can be generated in two ways:  
1. Using the sync information (internal clamping)  
The sync information is clamped on top-sync and the  
information obtained from this action is used to switch  
an internal current source at pin 24.  
Pin 24 should be connected to VP via a 4.7 kresistor,  
and a 1 nF capacitor to ground. During video scan the  
voltage at pin 24 will be HIGH (equals positive supply  
voltage). During the synchronization pulses the  
voltage at pin 24 will drop to zero because of the  
current sink (2.5 mA).  
sandcastle source will be unchanged.  
V
V1 = 0.544 V  
P
handbook, halfpage  
P
V2 = 0.456 V  
P
9.4 kΩ  
V1  
V2  
clamp pulse  
signal  
1.8 kΩ  
9.4 kΩ  
pin 24  
ON when current sync = 2.5 mA  
OFF when current sync = 0 mA  
MEA623  
Tolerance on V1 and V2 is given by R/R and VP/VP. The diffusion process gives R/R (max) = 1.5%.  
Fig.7 Clamping circuit.  
1995 Mar 07  
15  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
PACKAGE OUTLINE  
DIP24: plastic dual in-line package; 24 leads (600 mil)  
SOT101-1  
D
M
E
A
2
A
L
A
1
c
e
w
M
Z
b
1
(e )  
1
b
M
H
24  
13  
pin 1 index  
E
1
12  
0
5
10 mm  
scale  
DIMENSIONS (inch dimensions are derived from the original mm dimensions)  
(1)  
Z
A
A
A
(1)  
(1)  
1
2
UNIT  
mm  
b
b
c
D
E
e
e
L
M
M
H
w
1
1
E
max.  
min.  
max.  
max.  
1.7  
1.3  
0.53  
0.38  
0.32  
0.23  
32.0  
31.4  
14.1  
13.7  
3.9  
3.4  
15.80  
15.24  
17.15  
15.90  
5.1  
0.51  
4.0  
2.54  
0.10  
15.24  
0.60  
0.25  
0.01  
2.2  
0.066  
0.051  
0.021  
0.015  
0.013  
0.009  
1.26  
1.24  
0.56  
0.54  
0.15  
0.13  
0.62  
0.60  
0.68  
0.63  
inches  
0.20  
0.020  
0.16  
0.087  
Note  
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
EIAJ  
92-11-17  
95-01-23  
SOT101-1  
051G02  
MO-015AD  
1995 Mar 07  
16  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
SOLDERING  
REPAIRING SOLDERED JOINTS  
Apply a low voltage soldering iron below the seating plane  
(or not more than 2 mm above it). If its temperature is  
below 300 °C, it must not be in contact for more than 10 s;  
if between 300 and 400 °C, for not more than 5 s.  
Plastic dual in-line packages  
BY DIP OR WAVE  
The maximum permissible temperature of the solder is  
260 °C; this temperature must not be in contact with the  
joint for more than 5 s. The total contact time of successive  
solder waves must not exceed 5 s.  
The device may be mounted up to the seating plane, but  
the temperature of the plastic body must not exceed the  
specified storage maximum. If the printed-circuit board has  
been pre-heated, forced cooling may be necessary  
immediately after soldering to keep the temperature within  
the permissible limit.  
DEFINITIONS  
Data sheet status  
Objective specification  
Preliminary specification  
Product specification  
This data sheet contains target or goal specifications for product development.  
This data sheet contains preliminary data; supplementary data may be published later.  
This data sheet contains final product specifications.  
Limiting values  
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or  
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation  
of the device at these or at any other conditions above those given in the Characteristics sections of the specification  
is not implied. Exposure to limiting values for extended periods may affect device reliability.  
Application information  
Where application information is given, it is advisory and does not form part of the specification.  
LIFE SUPPORT APPLICATIONS  
These products are not designed for use in life support appliances, devices, or systems where malfunction of these  
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for  
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such  
improper use or sale.  
1995 Mar 07  
17  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
NOTES  
1995 Mar 07  
18  
 
Philips Semiconductors  
Product specification  
I2C-bus controlled YUV/RGB switch  
TDA8443A  
NOTES  
1995 Mar 07  
19  
 
Philips Semiconductors – a worldwide company  
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Tel. (0039)2 6752 2531, Fax. (0039)2 6752 2557  
For all other countries apply to: Philips Semiconductors,  
International Marketing and Sales, Building BE-p,  
P.O. Box 218, 5600 MD, EINDHOVEN, The Netherlands,  
Telex 35000 phtcnl, Fax. +31-40-724825  
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Tel. (03)3740 5028, Fax. (03)3740 0580  
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SCD38  
© Philips Electronics N.V. 1995  
All rights are reserved. Reproduction in whole or in part is prohibited without the  
prior written consent of the copyright owner.  
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Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB  
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  
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other industrial or intellectual property rights.  
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Printed in The Netherlands  
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Tel. (09)849-4160, Fax. (09)849-7811  
533061/1500/02/pp20  
Date of release: 1995 Mar 07  
9397 750 00021  
Norway: Box 1, Manglerud 0612, OSLO,  
Tel. (022)74 8000, Fax. (022)74 8341  
Document order number:  
Philips Semiconductors  
 

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