Decoder

SN74LS47 Datasheet – BCD to 7-Segment Decoder / Driver

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Part Number: SN74LS47

Function: BCD to 7-Segment Decoder / Driver

Package: DIP, SOIC 16 Pin Type

Manufacturer: ON Semiconductor

Pinouts:

SN74LS47 datasheet

Description

The SN74LS47 are Low Power Schottky BCD to 7-Segment Decoder /Drivers consisting of NAND gates, input buffers and seven AND-OR-INVERT gates. They offer active LOW, high sink current outputs for driving indicators directly. Seven NAND gates and one driver are connected in pairs to make BCD data and its complement available to the seven decoding AND-OR-INVERT gates. The remaining NAND gate and three input buffers provide lamp test, blanking input/ripple-blanking output and ripple-blanking input.

Features

1. Lamp Intensity Modulation Capability (BI/RBO)
2. Open Collector Outputs
3. Lamp Test Provision
4. Leading/Trailing Zero Suppression
5. Input Clamp Diodes Limit High-Speed Termination Effects

Logic Diagram

components

Other data sheets are available within the file: 7447, 74LS47, SN74LS47D, SN74LS47N

SN74LS47 Datasheet PDF Download

SN74LS47 pdf

SAA5262PS Datasheet – 10-Page Intelligent Teletext Decoder

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Part Number: SAA5262PS

Function: 10-Page Intelligent Teletext Decoder

Package: DIP 52 Pin Type

Manufacturer: Philips Electronics ( https://www.nxp.com/ )

Pinouts:

SAA5262PS datasheet

 

Description

The SAA5262PS ICs are single-chip 10-page 625-line World System Teletext (WST) decoders with a high level command interface, SAFARI compatible. It has been designed so that the overall system cost is kept to a minimum. This has been achieved through the capability of the device to be driven from a single +5 V power supply, low cost 12 MHz crystal oscillator and the high level command interface, which offers the benefit of low software overhead in the TV microcontroller. The SAA526xPS offers automatic detection of Fastext or TOP transmissions. The device also incorporates a facility to detect the pages in the transmission, which allows only transmitted pages to be selected by page-up and page-down.

 

Features

1. Complete 625-line teletext decoder in a single integrated circuit thereby reducing printed-circuit board
area and cost

2. Automatic detection of transmitted pages so that only existing pages will be selected by page-up and
page-down once inventory validated

3. Automatic detection of transmitted Fastext links or service information (packet 8/30)
4. On-screen display for user interface (menus, etc.) using teletext and dedicated menu icons
5. Video Programming System (VPS) decoding
6. Wide Screen Signalling (WSS) decoding
7. 8-page Fastext decoder

 

Other data sheets are available within the file: SAA5261PS, SAA5261PS/017, SAA5261PS/101, SAA5262

SAA5262PS Datasheet PDF Download


SAA5262PS pdf