NTE NTE1784 Datasheet
NTE1784
Integrated Circuit
TV Horizontal Processor
Description:
The NTE1784 is an integrated circuit in a 16–Lead DIP type package designed for use as a horizontal
processor circuit for B/W and color television receivers.
Features:
D Noise Gated Horizontal Sync Separator
D Noise Gated Vertical Sync Separator
D Horizonyal Oscillator with Frequency Range Limiter
D Phase Comparator between Sync Pulses and Oscillator Pulses (PLL)
D Phase Comparator between Flyback Pulses and Oscillator Pulses (PLL)
D Loop Gain and Time Constant Switching (VCR)
D Composite Blanking and Key Pulse Generator
D Protection Circuits
D Output Stages with High Current Capability
Absolute Maximum Ratings:
Supply Voltage (Pin1), V
Circuit Voltage, V
Circuit Voltage, V
Circuit Voltage, V
Circuit Voltage, V
2
4
8
9
, V
Peak Circuit Current, I
Peak Circuit Current, I
Circuit Current, I
Circuit Current, I
, I
6
7
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
2
3
10
Total Power Dissipation (T
Operating Junction Temperature Range, T
Storage Temperature Range, T
(TA = +25°C unless otherwise specified)
≤ +70°C), P
A
stg
tot
J
Maximum Thermal Resistance, Junction–to–Ambient, R
Electrical Characteristics:
Parameter Symbol Test Conditions Min Typ Max Unit
Supply Voltage V
Supply Current I
(TA = +25°C, VS = 12V unless otherwise specified)
S
Output pulses at Pin2 and Pin3 OFF – – 4 V
I3 = 0 – 40 52 mA
S
thJA
VS to –6V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+6V to –6V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
500mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
80°C/W. . . . . . . . . . . . . . . . . . . . . . . . .
10.0 12.0 13.2 V
15V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
S
1A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics (Cont’d): (TA = +25°C, VS = 12V unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Horizontal Sync Separator and Noise Gate
Input Signal (Peak–to–Peak) V
Input Switching Voltage V
Input Switching Current I
Input Blocking Current for Noise
Suppression
Input Switching Voltage for Noise
V
Suppression
Leakage Current I
Vertical Sync Separator
Input Signal (Peak–to–Peak) V
Input Switching Voltage V
Input Switching Current I
Leakage Current I
Vertical Sync Pulse Output Voltage V
Output Resistance R
Delay between Leading Edge of Input
t
and Output Signals
Delay between Trailing Edge of Input
t
and Output Signals
Vertical Sync Pulse Duration t
Protection Circuit
Input Voltage for Switching Off the
V
Output Pulses
Input Resistance R
Input Current I
Flyback Pulse
Input Threshold Voltage of Blanking
V
‘Generator
Input Threshold Voltage of Phase
V
Comparator
Input Switching Current I
Output Pulse
Output Voltage (Peak–to–Peak) V
Output Current I
Output Resistance R
Output Pulse Duration t
Composite Blanking and Key Pulse
Key Pulse Output Peak Voltage V
Blanking Pulse Output Voltage V
Output Resistance R
I
LV
TV
7K
7B
i
I8 = 80µA – 1.5 – V
8
V8 = 1.4V – 10 – µA
8
8
8
V8 = –5V – – 1 µA
8
i
I9 = 80µA – 1.5 – V
9
I9 = 1.4V – 5 – µA
9
V9 = –5V – – 1 µA
9
No load at Pin10 11 – – kΩ
10
10
V
Output pulses OFF – – 0.5 V
4
Output pulses ON 1 – – V
4
4
6
6
V6 ≥ 1.7V – 0.23 – mA
6
I3 = 150mA
3
V3 = 5V – 500 – mA
3
At leading edge of output pulse – 3 – Ω
3
P–P
At trailing edge of output pulses – 20 – Ω
p
7
1 3 6 V
– 0.9 – mA
– 2.1 – V
1 3 6 V
– 10 – kΩ
– 17 – µs
– 50 – µs
– 190 – µs
– 200 – kΩ
5 – – µA
– 1.5 – V
– 7.6 – V
– 10 – V
20 22 26 µs
9 11 – V
4.2 4.5 4.8 V
– 100 – Ω
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