TDA8842 PDF Datasheet – I2C-bus Controlled TV Processor

This post explains for the TV Processor.

The Part Number is TDA8842.

The function of this semiconductor is I2C-bus Controlled TV Processor.

The package is DIP 56 Pin, QFP 64 Pin type

Manufacturer: Philips, NXP Semiconductor


TDA8842 datasheet


The TDA8842 is I2C-bus controlled PAL / NTSC / SECAM TV processor.

The various versions of the TDA884X/5X series are I2C-bus controlled single chip TV processors which are intended to be applied in PAL, NTSC, PAL/NTSC and multi-standard television receivers. The N2 version is pin and application compatible with the N1 version, however, a new feature has been added which makes the N2 more attractive. The IF PLL demodulator has been replaced by an alignment-free IF PLL demodulator with internal VCO (no tuned circuit required).

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TDA8842 pdf pinout


1. Multi-standard vision IF circuit with an alignment-free PLL demodulator without external components

2. Alignment-free multi-standard FM sound demodulator (4.5 MHz to 6.5 MHz)

3. Audio switch

4. Flexible source selection with CVBS switch and Y(CVBS)/C input so that a comb filter can be applied

5. Integrated chrominance trap circuit

6. Integrated luminance delay line

7. Asymmetrical peaking in the luminance channel with a (defeatable) noise coring function

8. Black stretching of non-standard CVBS or luminance signals

Other data sheets are available within the file:

TDA8840, TDA8840H, TDA8841, TDA8843, TDA8841H, TDA8842,

TDA8844, TDA8842H, TDA8854H, TDA8846, TDA8846A, TDA8847


TDA8842 PDF Datasheet

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TDA9381 PDF Datasheet – 64Pin, TV Signal Processor – Philips

This post describes for the processor.

The Part Number is TDA9381PS.

The package is 64pin DIP type.

The function of this semiconductor is TV signal processor-Teletext decoder.

The manufacturer of this part is philips.

See the preview image and the PDF file for more information.

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TDA9381 pdf datasheet


The various versions of the TDA9381 series combine the functions of a TV signal processor together with a m-Controller and US Closed Caption decoder. Most versions have a Teletext decoder on board. The Teletext decoder has an internal RAM memory for 1or 10 page text. The ICs are intended to be used in economy television receivers with 90° and 110° picture tubes.


1. TV-signal processor

(1) Multi-standard vision IF circuit with alignment-free PLL demodulator

(2) Internal (switchable) time-constant for the IF-AGC circuit

(3) A choice can be made between versions with mono intercarrier sound FM demodulator and versions with QSS IF amplifier.

(4) The mono intercarrier sound versions have a selective FM-PLL demodulator which can be switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz).  The quality of this system is such that the external band-pass filters can be omitted.

(5) Source selection between ‘internal’ CVBS and external CVBS or Y/C signals

(6) Integrated chrominance trap circuit


TDA9381 pinout


• Teletext and Enhanced OSD modes

• Features of level 1.5 WST and US Close Caption

• Serial and Parallel Display Attributes

• Single/Double/Quadruple Width and Height for characters

• Scrolling of display region

• Variable flash rate controlled by software

• Enhanced display features including overlining, underlining and italics

• Soft colours using CLUT with 4096 colour palette


Other data sheets are available within the file:

TDA9350, TDA9352,  TDA9353,  TDA9360,  TDA9361,  TDA9362,  TDA9363,

TDA9364,  TDA9365, TDA9366, TDA9367, TDA9380, TDA9382, TDA9383,

TDA9384, TDA9385, TDA9386, TDA9387, TDA9388, TDA9389

TDA9381 PDF Datasheet


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