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TDA4557 датащи(PDF) 7 Page - NXP Semiconductors

номер детали TDA4557
подробное описание детали  Multistandard decoder
Download  11 Pages
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA4557 датащи(HTML) 7 Page - NXP Semiconductors

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March 1991
7
Philips Semiconductors
Product specification
Multistandard decoder
TDA4557
Identification part
Switching voltages for chrominance filters
and crystals
at pin 28 (PAL)
at pin 27 (SECAM)
at pin 26 (NTSC 3.58 MHz)
at pin 25 (NTSC 4.43 MHz)
Control voltage OFF state
V25,26,27,28-9
−−
0.5
V
Control voltage ON state
during scanning; colour OFF
V25,26,27,28-9
2.1
2.45
2.7
V
colour ON
V25,26,27,28-9
5.5
5.8
6.2
V
Output current
−I
25,26,27,28-9
−−
3mA
Voltage for forced switching ON
PAL
V28-9
9
VP
V
SECAM
V27-9
9
VP
V
NTSC 3.58 MHz
V26-9
9
VP
V
NTSC 4.43 MHz
V25-9
9
VP
V
Delay time for
restart of scanning
tdS
2 to 3 vertical periods
colour ON
tdC1
2 to 3 vertical periods
colour OFF
tdC2
0 to 1 vertical periods
SECAM identification (pin 23)
Input voltage for
horizontal identification (H)
V23-9
0
2V
vertical identification (V)
V23-9
10
VP
V
combined (H) and (V) identification
V23-9
6 (note 2)
V
Sequence of standard inquiry
PAL-SECAM-NTSC 3.58 MHz-NTSC
4.43 MHz
Reliable SECAM identification by PAL
priority circuit
Scanning time for each standard
tS
4 vertical periods
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT


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