SAA5191 Просмотр технического описания (PDF) - Philips Electronics
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SAA5191 Datasheet PDF : 9 Pages
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Philips Semiconductors
Teletext video processor
Preliminary specification
SAA5191
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134).
SYMBOL
PARAMETER
VP
V5
Tstg
Tamb
supply voltage (pin 16)
voltage on pin 5
storage temperature range
operating ambient temperature range
MIN.
0
0
−20
0
MAX.
13.2
5.5
125
+70
UNIT
V
V
°C
°C
CHARACTERISTICS
VP = 12 V; Tamb = 25 °C and measurements taken in Fig.3, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
VP
supply voltage range (pin 16)
IP
supply current
Video input, sync separator and data slicer
ZS ≤ 250 Ω
10.8 12.0 13.2 V
50
70 105 mA
Vi CVBS
input signal sync to white
(peak-to-peak value, pin 27)
sync amplitude (peak-to-peak value)
data slicing level
V2
input voltage LOW (pin 2)
input voltage HIGH
I2
input current LOW
input current HIGH
Teletext data output (TTD)
V2 = LOW
0.7 1
1.4 V
V2 = HIGH
1.75 2.5 3.5 V
0.1 −
1
V
V2 = LOW
0.3 0.46 0.7 V
V2 = HIGH
0.75 1.15 1.75 V
0
−
0.8 V
open-circuit equals HIGH 2.0 −
5.5 V
0
−
−150 µA
V2 < 5.5 V
0
−
1
mA
V22
phase lock pulse (PL) input voltage
(peak-to-peak value, pin 22)
Vo TTD
data output signal on pin 15
(peak-to-peak value)
V15
CL
t r, t f
DC output voltage
load capacitance on pin 15
rise and fall time
Teletext clock output (TTC)
phase locked
phase unlocked
mean level
0
−
3
V
3.9 −
5.5 V
2.5 3.5 4.5 V
3
4
5
V
−
−
40
pF
20
30 45
ns
Vo TTC
V14
CL
t r, t f
td
clock output signal on pin 14
(peak-to-peak value)
DC output voltage
load capacitance on pin 14
rise and fall time
delay time of falling edge relative to
other edges of TTD
mean level
2.5 3.5 4.5 V
3
4
5
V
−
−
40
pF
20
30 45
ns
−
−
± 20 ns
March 1991
5
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