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LH540245 - 2048 x 18 / 4096 x 18 Synchronous FIFOs

Description

NOTE: Throughout this data sheet, a BOLD ITALIC type font is used for all references to Enhanced Operating Mode

Features

  • Fast Cycle Times: 20/25/35 ns.
  • Pin-Compatible Drop-In Replacements for IDT72235B/45B FIFOs 2048 × 18 / 4096 × 18 Synchronous FIFOs.
  • May be Cascaded for Increased Depth, or Paralleled for Increased Width.
  • 16 mA-IOL High-Drive Three-State Outputs.
  • Five Status Flags: Full, Almost-Full, Half-Full, Almost-Empty, and Empty; ‘Almost’ Flags are Programmable.
  • Choice of IDT-Compatible or Enhanced Operating Mode; Selected by an Input Control Signal.

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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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LH540235/45 FEATURES • Fast Cycle Times: 20/25/35 ns • Pin-Compatible Drop-In Replacements for IDT72235B/45B FIFOs 2048 × 18 / 4096 × 18 Synchronous FIFOs • May be Cascaded for Increased Depth, or Paralleled for Increased Width • 16 mA-IOL High-Drive Three-State Outputs • Five Status Flags: Full, Almost-Full, Half-Full, Almost-Empty, and Empty; ‘Almost’ Flags are Programmable • Choice of IDT-Compatible or Enhanced Operating Mode; Selected by an Input Control Signal • Device Comes Up into One of Two Known Default States at Reset Depending on the State of the EMODE Control Input: Programming is Allowed, but is not Required • In Enhanced Operating Mode, Almost-Full, Half-Full, and Almost-Empty Flags can be Made Completely Synchronous • In Enhanced Operating Mode, Duplicate Enables for I
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