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DM7838

Part Number	DM7838
Manufacturer	National Semiconductor
Published	Sep 19, 2017
Description	quad TRI-STATE transceivers
Detailed Description	Line Drivers IReceivers DM7838/DM8838 quad unified"bus transceiver general description ~·features The DM7838/DM8838 ...
Datasheet	DM7838 PDF File

Overview

Line Drivers IReceivers DM7838/DM8838 quad unified"bus transceiver general description ~·features The DM7838/DM8838 are quad high speed drivers!' receivers designed for use in bus organized datatransmission systems interconnected by termi· nated 120n Impedance lines.
The external termi· nation is intended to be a 180n resistor from the bus to the +5V logic supply together with a 390n resistor from the bus to ground.
The bus can be terminated at one or both ends.
Low bus pin cur· rent allows up to 27 driver/receiver pairs to utilize a common bus.
The bus loading is unchanged when Vee = OV.
The receivers Incorporate hystere· SIS to greatly enhance bus nOise immunity.
One two·lnput NOR gate is included tq disable all drivers In a package simultaneously.
Receiver per· formance IS optimized for systems with bus rISe and fall times::; 10}.
1s.
• 4 totally separate driver/receiver pairs per package • 1V typical receiver Input hysteresIs • Receiver hysteresis independent of re...

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