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ELM381 - 60Hz Long Interval Counter

Datasheet Summary

Description

The ELM381 is a digitally configurable, multistage counter circuit in a single 8 pin package.

When connected to a 60Hz source, four time periods from one hour to one week are possible, as shown in Table 1 below.

Features

  • Low power CMOS design - typically 1mA at 5V.
  • Wide supply range.
  • 3.0 to 5.5 volt operation.
  • Digitally selectable delays.
  • Schmitt trigger circuitry on the clock input.
  • Completely static operation.
  • Long term accuracy with line frequency clock.
  • High current drive outputs.
  • up to 25 mA.
  • Reset input provided with a pullup resistor Connection Diagram PDIP and SOIC (top view) VDD 1 D1 2 D0 3 reset 4 8 VSS 7 Out.

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Datasheet preview – ELM381

Datasheet Details

Part number ELM381
Manufacturer ELM Electronics
File Size 21.96 KB
Description 60Hz Long Interval Counter
Datasheet download datasheet ELM381 Datasheet
Additional preview pages of the ELM381 datasheet.

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Full PDF Text Transcription

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ELM381 60 Hz Long Interval Counter Description The ELM381 is a digitally configurable, multistage counter circuit in a single 8 pin package. When connected to a 60Hz source, four time periods from one hour to one week are possible, as shown in Table 1 below. Although the circuit has been optimized for a 60Hz input frequency, it is capable of being operated over a very wide range of frequencies. Of particular interest is the ability to interface directly to very low frequencies with varying waveforms due to the use of a Schmitt trigger input circuit. The ELM381 provides two outputs – a standard 50% duty cycle divider output, and a momentarily pulsed output. The pulse output is useful for audibly or visually signalling the beginning of a time period, or as a trigger for other circuitry.
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