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參數(shù)資料
| 型號(hào)： | TDA8446T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Fast RGB/YC switch for digital decoding |
| 中文描述： | 3-CHANNEL, AUDIO/VIDEO SWITCH, PDSO28 |
| 封裝： | PLASTIC, SOP-28 |
| 文件頁(yè)數(shù)： | 4/16頁(yè) |
| 文件大小： | 106K |
| 代理商： | TDA8446T |
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1995 Feb 16
4
Philips Semiconductors
Product specification
Fast RGB/YC switch for digital decoding
TDA8446
PINNING
SYMBOL
PIN
DESCRIPTION
DIP20
SO28
SOUT
1
1
synchronization signal output; this output provides the synchronization information
extracted from the incoming signal at pin 2 (SIN).
synchronization signal input; CSYNC or CVBS signal from the peri-connector
clamping capacitor connection; the clamping pulse is generated by external circuitry
connected to this pin, the generated pulse clamps the RGB inputs.
not connected
clamping pulse output
not connected
B-signal input
G-signal input
R-signal input
clamping control signal input; this TTL signal is used to select the clamp signal, a LOW
level at this input forces the circuit to output the generated clamping pulse.
not connected
clamping pulse input; this TTL signal indicates the black level clamping period for the
incoming Y signal (active-HIGH).
chrominance signal input
chrominance signal output
luminance signal input; this input also accepts the CVBS signal
fast switching signal input; this signal is used to control fast switching of the luminance
signals, a HIGH level at this input forces the circuit to output the internal Y signal.
not connected
not connected
gain control signal input; this TTL signal is used to set the gain of the chrominance
amplifiers (A), a LOW level at this input forces the gain A to 6 dB (HIGH forces to 0 dB).
not connected
(R
Y) signal output
luminance signal output
(B
Y) signal output
not connected
not connected
positive supply voltage (+12 V)
internal decoupling
ground
SIN
CCL
2
3
2
3
n.c.
CLO
n.c.
BIN
GIN
RIN
SW1
4
5
6
7
8
4
5
6
7
8
9
10
n.c.
CLI
9
11
12
CIN
COUT
YIN
FS
10
11
12
13
13
14
15
16
n.c.
n.c.
SW2
17
18
19
14
n.c.
(R-Y)
YOUT
(B
Y)
n.c.
n.c.
V
CC
VINT
V
EE
20
21
22
23
24
25
26
27
28
15
16
17
18
19
20
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TDA8451 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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| TDA8452 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| TDA8452A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:P2CCD FILTER COMBINATION FOR COLOUR DECODERS |
| TDA8453A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:P2CCD FILTER COMBINATION FOR CVBS AND S-VHS |
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