ELM712

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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.

Applications

  • Campaign buttons
  • Battery operated toys
  • Dress ties
  • Signs
  • Holiday Ornaments

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 or SOIC, top view )
ELM712 connection diagram

Block Diagram

ELM712 block diagram

Downloads

The ELM712 data sheet (ver B, 20K):

pdf icon

Quantity Pricing

The following are the unit prices, as you vary the quantity purchased:

1-9

$8.00
10-99

$6.67
100-999

$6.15
1000+

$5.71

All prices are in Canadian dollars. We use the total number purchased (ELM712P + ELM712SM) for the calculation.

Purchase

Select the desired integrated circuit package type, then the quantity desired, before adding it to your shopping cart. Quantity discounts will be applied as appropriate.

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