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74F189A - 64-bit TTL bipolar RAM

General Description

The 74F189A is a high speed, 64-bit RAM organized as a 16-word by 4-bit array.

Key Features

  • High speed performance.
  • Replaces 74F189.
  • Address access time: 8ns max vs 28ns for 74F189.
  • Power dissipation: 4.3mW/bit.
  • Schottky clamp TTL.
  • One chip enable.
  • Inverting outputs (for non-inverting outputs see 74F219A).
  • 3-State outputs.
  • 74F189A in 150 mil wide SO is preferred options for new designs are fully decoded on chip. The outputs are in high impedance state whenever the chip enable (CE) is high. The outputs ar.

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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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INTEGRATED CIRCUITS 74F189A 64-bit TTL bipolar RAM, inverting (3-State) Product specification IC15 Data Handbook 1990 Feb 23 Philips Semiconductors Philips Semiconductors 64-bit TTL bipolar RAM, inverting (3-State) Product specification 74F189A FEATURES • High speed performance • Replaces 74F189 • Address access time: 8ns max vs 28ns for 74F189 • Power dissipation: 4.3mW/bit • Schottky clamp TTL • One chip enable • Inverting outputs (for non-inverting outputs see 74F219A) • 3-State outputs • 74F189A in 150 mil wide SO is preferred options for new designs are fully decoded on chip. The outputs are in high impedance state whenever the chip enable (CE) is high. The outputs are active only in the READ mode (WE = high) and the output data is the complement of the stored data.