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CD54HC147 - 10- to 4-Line Priority Encoder

General Description

The CDx4HC147 and CD74HCT147 are 9-input priority encoders.

Key Features

  • Buffered inputs and outputs.
  • Typical propagation delay: 13ns at VCC = 5V, CL = 15pF, TA = 25oC.
  • Fanout (over temperature range).
  • Bus driver outputs: 15 LSTTL loads.
  • Wide operating temperature range: -55oC to 125oC.
  • Balanced propagation delay and transition times.
  • Significant power reduction compared to LSTTL logic ICs.
  • HC types.
  • 2V to 6V Operation.
  • High noise immunity: NIL = 30%, NIH = 30% of VCC at VCC =.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CD54HC147, CD74HC147, CD74HCT147 SCHS149G – NOVEMBER 1998 – REVISED JANUARY 2025 CDx4HC147, CD74HCT147 High-Speed CMOS Logic 10- to 4-Line Priority Encoder 1 Features • Buffered inputs and outputs • Typical propagation delay: 13ns at VCC = 5V, CL = 15pF, TA = 25oC • Fanout (over temperature range) – Bus driver outputs: 15 LSTTL loads • Wide operating temperature range: -55oC to 125oC • Balanced propagation delay and transition times • Significant power reduction compared to LSTTL logic ICs • HC types – 2V to 6V Operation – High noise immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V • HCT types – 4.5V to 5.5V Operation – Direct LSTTL input logic compatibility, VIL= 0.