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74F646B

Part Number	74F646B
Manufacturer	Fairchild
Description	Octal Transceiver / Register
Published	Aug 30, 2017
Detailed Description	74F646 • 74F646B • 74F648 Octal Transceiver/Register with 3-STATE Outputs March 1988 Revised August 1999 74F646 • 74F6...
Datasheet	74F646B PDF File

Overview

74F646 • 74F646B • 74F648 Octal Transceiver/Register with 3-STATE Outputs March 1988 Revised August 1999 74F646 • 74F646B • 74F648 Octal Transceiver/Register with 3-STATE Outputs General Description These devices consist of bus transceiver circuits with 3STATE, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers.
Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes to a high logic level.
Control G and direction pins are provided to control the transceiver function.
In the transceiver mode, data present at the high impedance port may be stored in either the A or the B register or in both.
The select controls can multiplex stored and real-time (transparent mode) data.
The direction control determines which bus will receive data when the enable control G is Active LOW.
In the isolation mode (control G HIGH), A data may be stored in the B register ...

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