LS7215, LS7216

Programmable Digital Delay Timer (20 Pins)
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LS7215, LS7216

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Description

The LS7215 and LS7216 are CMOS integrated circuits for generating digitally programmable delays. The delay is controlled by 8 binary weighted inputs, WB0 – WB7, in conjunction with an applied clock or oscillator frequency. The programmed time delay manifests itself in the Delay Output (OUT) as a function of the Operating Mode selected by the Mode Select inputs A and B: One-Shot, Delayed Operate, Delayed Release or Dual Delay. The time delay is initiated by a transition at the Trigger Input (TRIG).

Features:

• The LS7215 and LS7216 are extended feature versions of the LS7211N and LS7212, respectively
• Extended features include:1. Latches for loading weighting bits from an 8-bit bus2. Open drain output for direct drive of a relay coil returned to chip VDD or to a voltage as high as 110V using a single external transistor

Additional information

Product

LS7215-S (20-Pin SOIC), LS7215 (20-Pin DIP), LS7216-S (20-Pin SOIC), LS7216 (20-Pin DIP)

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