74HC7404 Datasheet, PDF(24/28 Page) NXP Semiconductors – 5-Bit x 64-word FIFO register; 3-state

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74HC7404 Datasheet, PDF (24/28 Pages) NXP Semiconductors – 5-Bit x 64-word FIFO register; 3-state

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Philips Semiconductors

5-Bit x 64-word FIFO register; 3-state

Product speciï¬cation

74HC/HCT7404

handbook, full pagewidth

DIR

DATA INPUT 5

DOR A

SO A

SI A 7404

DIR A FIFO A QnA 5

DnA

SI B

DOR B

DIR B

SOB

7404 Q nB 5

DnB FIFO B

DOR

DATA OUTPUT

MGA682

Fig.21 Cascading for increased word capacity; 128 word Ã 5 bits.

Note to Fig.21

The â7404â is easily cascaded to increase word capacity without any external circuitry. In cascaded format, all necessary

communications are handled by the FIFOs. Figures 22 and 23 demonstrate the intercommunication timing between

FIFOA and FIFOB. Figure 24 provides an overview of pulses and timing of two cascaded FIFOs, when shifted full and

shifted empty again.

September 1993

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