74 series digital circuit 74S428 system controller and bus driver

Published:2011/6/26 21:52:00 Author:Nicole | Keyword: 74 series, digital circuit, system controller, bus driver | From:SeekIC

74426 four gates bus buffer(there states) C is low level, Y is high resistance output; when C is high level, Y=A, if the diodes of Y to VCC clamped are removed, then it is the same as 74125 absolutely; the pin is the same as 74425. 74S428, 74S438 system controller and bus driver two-way data channel: it can be exchanged with Intel 8228 and 8238.



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