MC44140DW Ver la hoja de datos (PDF) - Motorola => Freescale
Número de pieza
componentes Descripción
Fabricante
MC44140DW Datasheet PDF : 14 Pages
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Level
3
2
0
Table 1. Sandcastle Ident. Pulse for PAL/NTSC
Meaning
Black Level
Black Level
Active Signal
PAL
NTSC
Typical
Duration
µs
5.0
5.0
54.0
53.5
Range (VDD = 5.00 V)
Lower Limit
Upper Limit
3.67 V
5.00 V
2.34 V
3.27 V
0.00 V
—
0.50 V
—
Level in
Chrono–
logical
Order
3
2
0
3
2
1
Typical
Duration
µs
5.0
5.0
54.0
5.0
5.0
54.0
Table 2. Sandcastle Ident. Pulse for SECAM
Meaning
B–Y Input
Black Level
Ident. Gate
Active Signal
DC Level
DC Level
DC Level
R–Y Input
DC Level
DC Level
DC Level
Black Level
Ident. Gate
Active Signal
Line Period
SECAM 1
SECAM 2
Range (VDD = 5.00 V)
Lower Limit
3.67 V
2.34 V
0.00 V
3.67 V
2.34 V
0.90 V
Upper Limit
5.00 V
3.27 V
0.50 V
5.00 V
3.27 V
1.94 V
Level
0
1
2
3
Table 3. System Selection
PAL
NTSC
Meaning
Typical
Voltage
0.00 V
1.40 V
Range (VDD = 5.00 V)
Lower Limit
Upper Limit
0.00 V
0.50 V
0.90 V
1.94 V
SECAM
EXTERNAL
2.50 V
5.00 V
2.34 V
3.67 V
3.27 V
5.00 V
MC44140
2–10
MOTOROLA
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