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参数资料
| 型号： | NTE7049 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit CMOS-Sync Generator for TV & Video Processing Systems |
| 中文描述： | 集成电路的CMOS电视同步发电机 |
| 文件页数： | 1/3页 |
| 文件大小： | 27K |
| 代理商： | NTE7049 |
NTE7049
Integrated Circuit
CMOS–Sync Generator for TV & Video
Processing Systems
Description:
The NTE7049 is a CMOS LSI sync generator in a 24–Lead DIP type package that produces all the timing sig-
nals required to drive a fully 2–to–1 interlaced 525–line 30–frame/second, or 625–line 25–frame/second TV
camera or video processing system. A complete sync waveform is produced which begins each field with six
serrated vertical sync pulses, preceded and followed by six half–width double frequency equalizing pulses.
The sync output is gated by the master clock to preserve horizontal phase continuity during the vertical interval.
The NTE7049 can be operated either in “genlock” mode, in which it is synchronized with a reference sync pulse
train from another TV camera, or in “stand–alone” mode, in which it is synchronized with a local on–chip crystal
oscillator (the crystal and two passive components are off chip). Also, the circuit can sense the presence or
absence of a reference sync pulse train and automatically select the “genlock” or “stand–alone” mode.
A frame sync pulse is produced at the beginning of every odd field. The vertical counter can be reset to either
the first equalizing pulse or the first vertical sync pulse of the vertical interval.
Features:
Interlaced Composite Sync Output
Automatic Genlock Capability
Crystal Oscillator Operation
525 or 625 Line Operation
Vertical Reset Option
Wide Power Supply Operating Voltage: 4V to 15V
Applications:
Cameras
Monitors and Displays
CATV
Teletext
Video Games
Sync Restorer
Video Service Instruments
Absolute Maximum Ratings:
DC Supply Voltage (Voltage referenced to V
SS
terminal), V
DD
Input Voltage Range (All Inputs), V
I
DC Input Current (Any One Input), I
I
Power Dissipation (T
A
= –40
°
to +60
°
C), P
D
Derate Linearly Above +60
°
C to 200mW
Device Dissipation Per Output Transistor (T
A
= –40
°
to +85
°
C)
Operating Temperature Range, T
A
Storage Temperature Range, T
stg
Lead Temperature (During Soldering, 1/16
±
1/32 from case for 10sec), T
L
15V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
SS
≤
V
I
≤
V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
10mA
500mW
12mW/
°
C
100mW
–40
°
to +85
°
C
–65
°
to +150
°
C
+265
°
C
. . . . . . . . . . . . . . . . . . . . . .
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