Encoder

SN74LS47N Datasheet – BCD to 7 Segment – Encoder, Decoder

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Part Number: SN74LS47N

Function: Encoders, Decoders, Multiplexers & Demultiplexers BCD to 7 Segment

Package: DIP 16 Pin

Manufacturer: Texas Instruments, Motorola ( Freescale )

Images:

SN74LS47N-Decode-Driver

 

Description

TheSN54/74LS47 are Low Power Schottky BCD to 7-Segment Decoder /Driversconsisting of NAND gates, input buffers and seven AND-OR-INVERTgates. They offer active LOW, high sink current outputs for driving indicators directly. Seven NAND gates and one driver are connected in pairs tomake BCD data and its complement available to the seven decoding AND-OR-INVERT gates. The remaining NAND gate and three input buffers providelamp test, blanking input/ripple-blanking output and ripple-blanking input.

The SN74LS47N feature active-low outputs designed for driving common-anode LEDs or incandescent indicators directly.

Pinouts:
SN74LS47N-datasheet-pinout

 

Features

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

Connection Diagram

SN74LS47N datasheet

Official Homepage: https://www.ti.com/product/SN74LS47/pinout-quality

 

Other data sheets are available within the file: 5447, 54LS47, 7447, 74LS47, SN54LS47

SN74LS47N Datasheet PDF Download


SN74LS47N pdf

 

SN74HC257 Datasheet – Decoder/Encoder/Multiplexer – TI

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Part Number: SN74HC257

Function: Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs

Manufacturer: Texas Instruments

Pinout: SN74HC257 Datasheet

Description

These devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (G\) input is at a high logic level.

To ensure the high-impedance state during power up or power down, (G\) should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Official Homepage: https://www.ti.com/product/sn74hc257

Block Diagram :

SN74HC257 Block Diagram

SN74HC257 Datasheet