NTE874 Ver la hoja de datos (PDF) - NTE Electronics
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Fabricante
NTE874 Datasheet PDF : 7 Pages
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Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12VDC, V25 = 12VDC, Pin 2, 15, 22 to
GND;, 1µF from Pin 4 to GND., 10K ohms from Pin 28 to GND., FCLK = 1MHz, (AC Coupled),
VSync 1.2V to 4V, VIV 1.9V to 2.8V, VFA 0.2V to 0.7V)
Parameter
Test Conditions
PIN # Min Typ Max Units
OSC/Count–Down/APC Section (Cont’d)
APC Discharge
V27 = 4V, I26 = 0µA,
V21 = Open
21
6.5 6.8 7.5
V
APC Discharge
I26 = –500µA, V20 = 2V,
V21 = 2V,
V21 = VAPC Bias (above),
(Stop Clock When Pin 21
Goes Low)
21
600 803 1100 µA
APC Charge
V27 = 4V, I26 = –500µA,
V20 = 6V,
V21 = VAPC Bias (above)
21 –600 –793 –1100 µA
Phase Detector
I21 = APC Discharge–APC
Charge
21
–30 9.8 30 µA
Sync Width, Wide
Differentiation
Sync Width, Narrow
Phase Detector Bias
V27 = 5V, V23 = 1MHz,
I20 = –300µA,
V26 = Sq. Wave 0 to 5V with
Ton = Toff = 31.75µs
Same as above except
Ton = 2µs, Toff = 61.5µs
V27 = 4V
21
5
6
8
µs
21
1.8 2.3 2.6 µs
20
3.9 4.3 4.7
V
Oscillator Current 1
V24 = 3V, V23 = 6V
V21 = 8.5V
25
1.4 1.8 3.0 mA
OSC/Count–Down/APC Section
Oscillator Current Ratio
V24 = 3V, V23 = 6V,
25
.45 .5 .55 Ratio
V21 = Open, Measured I25 &
Divide by Oscillator Current 1
Oscillator Bias
24
4.5 4.8 5.5
V
+Phase Input Current
V24 = 0V
24 –230 312 –570 µA
–Phase Input Current
V23 = 0V
23 –230 331 –570 µA
Flyback Charge Current
V17 = 0V, V19 = 6V
19 –400 –501 –766 µA
Flyback Discharge Current I17 = 700µA, V19 = 6V
19
2 2.4 3.5 mA
Blanking/Gating Section
Flyback Input, Low Current 1 V18 = 0V
18
–3 –1 3
µA
Flyback Input, High Current 1 V18 = 2V
18
0.8 1.6 3.8 mA
Flyback Input, Low Current 2 V17 = 0V
17
–3 –.09 3
µA
Flyback Input, High Current 2 V17 = 2V
17
0.8 1.5 1.9 mA
Blanking Voltage
V18 = 2V, V23 = 1MHz, Stop
16
5.8 6 6.4
V
Clock when 3V < V16< 5V
Burst Voltage
V18 = 2V, V23 = 1MHz, Stop
16
11.2 11.95 –
V
Clock when V16 > 9V
Burst Saturation Voltage
V18 = 0V I16 = 5µA
16
– .45 0.6
V
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