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参数资料
| 型号： | NTE874 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit TV Horiz/Vert Countdown System Circuit |
| 中文描述： | 集成电路电视Horiz /垂直倒计时系统电路 |
| 文件页数： | 3/7页 |
| 文件大小： | 43K |
| 代理商： | NTE874 |
Electrical Characteristics (Cont
’
d): (
T
A
= +25
°
C, V
CC
= 12V
DC
, V25 = 12V
DC
, Pin 2, 15, 22 to
GND;, 1
μ
F from Pin 4 to GND., 10K ohms from Pin 28 to GND., F
CLK
= 1MHz, (AC Coupled),
V
Sync
1.2V to 4V, V
IV
1.9V to 2.8V, V
FA
0.2V to 0.7V)
Parameter
Test Conditions
OSC/Count
–
Down/APC Section (Cont
’
d)
APC Discharge
V27 = 4V, I26 = 0
μ
A,
V21 = Open
APC Discharge
I26 =
–
500
μ
A, V20 = 2V,
V21 = 2V,
V21 = VAPC Bias (above),
(Stop Clock When Pin 21
Goes Low)
APC Charge
V27 = 4V, I26 =
–
500
μ
A,
V20 = 6V,
V21 = VAPC Bias (above)
Phase Detector
I21 = APC Discharge
–
APC
Charge
Sync Width, Wide
Differentiation
I20 =
–
300
μ
A,
V26 = Sq. Wave 0 to 5V with
T
on
= T
off
= 31.75
μ
s
Sync Width, Narrow
Same as above except
T
on
= 2
μ
s, T
off
= 61.5
μ
s
Phase Detector Bias
V27 = 4V
Oscillator Current 1
V24 = 3V, V23 = 6V
V21 = 8.5V
OSC/Count
–
Down/APC Section
Oscillator Current Ratio
V24 = 3V, V23 = 6V,
V21 = Open, Measured I25 &
Divide by Oscillator Current 1
Oscillator Bias
+Phase Input Current
V24 = 0V
–
Phase Input Current
V23 = 0V
Flyback Charge Current
V17 = 0V, V19 = 6V
Flyback Discharge Current
I17 = 700
μ
A, V19 = 6V
Blanking/Gating Section
Flyback Input, Low Current 1
V18 = 0V
Flyback Input, High Current 1
V18 = 2V
Flyback Input, Low Current 2
V17 = 0V
Flyback Input, High Current 2
V17 = 2V
Blanking Voltage
V18 = 2V, V23 = 1MHz, Stop
Clock when 3V < V16< 5V
Burst Voltage
V18 = 2V, V23 = 1MHz, Stop
Clock when V16 > 9V
Burst Saturation Voltage
V18 = 0V I16 = 5
μ
A
PIN #
Min
Typ
Max
Units
21
6.5
6.8
7.5
V
21
600
803
1100
μ
A
21
–
600
–
793
–
1100
μ
A
21
–
30
9.8
30
μ
A
V27 = 5V, V23 = 1MHz,
21
5
6
8
μ
s
21
1.8
2.3
2.6
μ
s
20
25
3.9
1.4
4.3
1.8
4.7
3.0
V
mA
25
.45
.5
.55
Ratio
24
24
23
19
19
4.5
–
230
–
230
–
400
2
4.8
312
331
–
501
2.4
5.5
–
570
–
570
–
766
3.5
V
μ
A
μ
A
μ
A
mA
18
18
17
17
16
–
3
0.8
–
3
0.8
5.8
–
1
1.6
–
.09
1.5
6
3
μ
A
mA
μ
A
mA
V
3.8
3
1.9
6.4
16
11.2
11.95
–
V
16
–
.45
0.6
V
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