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ELM712 - LED Runner

General Description

The ELM712 is a handy circuit for controlling up to five LEDs in novelty devices.

One pushbutton press is all it takes to initiate about 15 seconds of LED activity, before the circuit reverts back to its very low current standby mode.

Key Features

  • Low power CMOS design.
  • Wide supply range - 3.0 to 5.5 volt operation.
  • Auto-off mode conserves batteries.
  • Single push-button to activate.
  • Direct drive high current outputs.
  • No external timing components required Connection Diagram PDIP and SOIC (top view) VDD 1 LED4 2 LED5 3 start 4 8 VSS 7 LED3 6 LED2 5 LED1 Block Diagram start 4 VDD Power Control Master Oscillator Output Drivers 5 6 7 2 3 LED1 LED2 LED3 LED4 LED5 ELM712DSB E.

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Datasheet Details

Part number ELM712
Manufacturer ELM
File Size 14.77 KB
Description LED Runner
Datasheet download datasheet ELM712 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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ELM712 LED Runner Description The ELM712 is a handy circuit for controlling up to five LEDs in novelty devices. One pushbutton press is all it takes to initiate about 15 seconds of LED activity, before the circuit reverts back to its very low current standby mode. All of the logic required for circuit operation is contained wholly within this 8 pin integrated circuit. Normally only a pushbutton, the LEDs, and a battery are all that are needed for a complete circuit. At higher voltages, a single current limiting resistor may be required to limit LED current. The ELM712 drives each LED output in a sequential fashion, at approximately 10 Hz. By only driving one output at a time, peak current and thus battery requirements are reduced.