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The ELM701 is a fun circuit for creating mouse- like noises. Its very low current consumption makes it an ideal candidate for battery-powered toys and novelty items.

All of the logic required for circuit operation is contained within this 8 pin integrated circuit. Normally only a battery, a piezo element, and a single resistor are all that are needed for a complete circuit, although an on/off switch may be desireable.

The ELM701 uses pseudo-random number generators to produce from one to four ‘chirps’ at random intervals of up to about eight seconds. This makes the noises seem more like a real (but fairly active) rodent. Between these series of chirps, the circuit reverts to low power mode in order to conserve battery energy.


  • Mousetrap bait
  • Unique power on warning
  • Voicing for toys
  • Coffee machine or office desk item
  • A fun plaything


  • Low power CMOS design
  • Wide supply range – 3.0 to 5.5 volt operation
  • Low power mode between chirps saves batteries
  • Pseudo-random intervals for more realistic sounds
  • Push-pull piezo drive eliminates the need for an external capacitor while providing high volume
  • Only one external resistor required

Connection Diagram

( PDIP or SOIC, top view )
ELM701 connection diagram

Block Diagram

ELM701 block diagram


The ELM701 data sheet (ver B, 18K):

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Quantity Pricing

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






All prices are in Canadian dollars. We use the total number purchased (ELM701P + ELM701SM) for the calculation.


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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