Multiplexers | NLSF2500

Keypad Multiplexer

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Overview

This device serves to encode up to 21 keys to just 8 general purpose I/O lines on a microcontroller. It eliminates many discrete diodes and transistors. Its high ESD protection serves to isolate the keyboard and the MCU.

  • Cell Phones
  • PDAs
  • MP3 players

  • Single Supply Operation
  • Optimized for 1.8 V to 3.6 V VCC
  • Tiny 3 x 3 mm QFN16 Package
  • QFN16 conforms to: JEDEC MO220, Issue H, Variation VEED6
  • Very Low Voltage Drop
  • Permits Operation Down to 1.65 V
  • Pin-to-Pin Compatible with CM2500
  • This is a PbFree Device QFN16

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