NTE874

Integrated Circuit

TV Horiz/Vert Countdown System Circuit

Description:

sumer TV applications for color/monochrome receivers or monitors. This device takes the composite

video input signal in combination with the on–chip master–scan oscillator to provide both horizontal

drive and vertical deflection output signals.

Other on–chip functions include sync separator, horizontal APC, horizontal/vertical count–down cir-

cuitry, vertical ramp generator, and horizontal drive circuit (Pulse–Width Modulator).

The NTE874 features dual–mode operation and accepts either standard or non–standard video sig-

nals. An automatic mode–recognition system forces the operation into the asynchronous mode for

non–standard sync signals.

Intended for use with 525–line systems, the NTE874 is supplied in the 28–lead dual–in–line plastic

package.

Features:

D Sync Separator

D Automatic Phase Control (APC) of Oscillator

D Horizontal/Vertical Count–down

D Vertical Output

D Horizontal Drive Output (Pulse–Width Modulator)

Absolute Maximum Ratings:

POWER SUPPLY:

15V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

75mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.75V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

150mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .