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SAA5252

Line twenty-one acquisition and display (LITOD)

Philips Electronics 

Philips Semiconductors

Line twenty-one acquisition and display (LITOD)

Product specification

SAA5252

FEATURES

• Complete ‘stand-alone’ Line 21 decoder in one package

• On-chip display RAM allowing full page Text mode

• Enhanced character display modes

• Full colour captions

• RGB interface for standard colour decoder ICs

• Automatic handling of Field 2 data

• Automatic selection of (1H, 1V), (2H, 1V) or (2H, 2V)

scan modes

• Onboard OSD facility using Character generator

• RGB inputs to support existing OSD ICs

• I2C-bus or ‘stand-alone’ pin control

• Automatic data-ready signal generation on data

acquisition

• Can decode signals recorded on standard VHS and

S-VHS tape.

GENERAL DESCRIPTION

The SAA5252 (LITOD) is a single-chip CMOS device,

which will acquire, decode and display Line 21 Closed

Captioning data from a 525-line composite video signal.

Operation as an On-Screen Display (OSD) device is also

possible. Normal and line progressive scan modes are

supported.

QUICK REFERENCE DATA

SYMBOL

VDD

IDD

Vsyn

Vvid

Tamb

Tstg

PARAMETER

supply voltage

supply current

CVBS sync amplitude

CVBS video amplitude

operating ambient temperature

storage temperature

MIN.

4.5

−

0.1

0.7

−20

−55

TYP.

5.0

30

0.3

1.0

−

−

MAX.

5.5

−

0.6

1.4

+70

+125

UNIT

V

mA

V

V

°C

°C

ORDERING INFORMATION

TYPE

NUMBER

SAA5252P

SAA5252T

NAME

DIP24

SO24

PACKAGE

DESCRIPTION

plastic dual in-line package; 24 leads (600 mil)

plastic small outline package; 24 leads; body width 7.5 mm

VERSION

SOT101-1

SOT137-1

1996 Jul 18

2

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