Ultra-Small, Flexible LED Expansion Reference Design
TIDA-01233
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Description

This document focuses on two reference designs using the SN74HC595B 8-bit Shift Register with 3-State Output Registers and the SN74LVC244A Octal Buffer with 3-State Outputs, each used to expand three general purpose outputs on a microcontroller to eight or more general purpose outputs. Both devices are available in the ultra-small X2SON package. The Seven Segment Driver Reference Design focuses on individually controlling the eight LEDs in seven-segments with hardware that fits underneath the display module. This 8×8 LED Matrix Reference Design focuses on driving 64 LEDs arranged as an 8×8 matrix display that could be panelized to create larger displays.

Features
  • Wide voltage supply range of 2 V to 3.6 V
  • Expands 3 general purpose output pins to 64+outputs
  • Allows custom character displays on sevensegments
  • Indefinitely expandable to additional sevensegments
  • 8×8 LED Matrix with expandable outputs
  • Compatible with 2.5-V and 3.3-V standard logic outputs 

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
SN74HC595B  8-Bit Shift Registers With 3-State Output  Flip-flop/latch/register  Sample & Buy Not Available
SN74LVC244A  Octal Buffer/Driver With 3-State Outputs  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
SN74HC595B Download Download
SN74LVC244A Download Download
Download Download
Download Download
(GQN) | 20 Download -
Download Download
Download Download
Download Download
Download Download
Download -
Download -

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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

Datasheet (2)
Title Type Size (KB) Date
PDF 2555 01 Nov 2016
PDF 1095 15 Feb 2016
User guides (1)
Title Type Size (KB) Date
PDF 11163 20 Jul 2016
Design files (6)
Title Type Size (KB) Date
ZIP 897 29 Nov 2016
ZIP 2163 29 Nov 2016
PDF 3248 29 Nov 2016
PDF 634 29 Nov 2016
PDF 215 29 Nov 2016
PDF 824 29 Nov 2016

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