NTE7049 Datasheet, PDF (1/3 Pages) NTE Electronics – Integrated Circuit CMOS-Sync Generator for TV & Video Processing Systems

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:
D Interlaced Composite Sync Output
D Automatic Genlock Capability
D Crystal Oscillator Operation
D 525 or 625 Line Operation
D Vertical Reset Option
D Wide Power Supply Operating Voltage: 4V to 15V
Applications:
D Cameras
D Monitors and Displays
D CATV
D Teletext
D Video Games
D Sync Restorer
D Video Service Instruments
Absolute Maximum Ratings:
DC Supply Voltage (Voltage referenced to V_SS terminal), V_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Input Voltage Range (All Inputs), V_I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V_SS ≤ V_I ≤ V_DD
DC Input Current (Any One Input), I_I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10mA
Power Dissipation (T_A = –40° to +60°C), P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW
Derate Linearly Above +60°C to 200mW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12mW/°C
Device Dissipation Per Output Transistor (T_A = –40° to +85°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mW
Operating Temperature Range, T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +85°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Lead Temperature (During Soldering, 1/16 ±1/32 from case for 10sec), T_L . . . . . . . . . . . . . . . . . . . . . . +265°C