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HD74HC670

Hitachi Semiconductor
Part Number HD74HC670
Manufacturer Hitachi Semiconductor
Description 4-by-4 Register
Published Mar 23, 2005
Detailed Description HD74HC670 4-by-4 Register File (with 3-state outputs) Description The HD74HC670, 16-bit register file is organized as 4...
Datasheet PDF File HD74HC670 PDF File

HD74HC670
HD74HC670

Overview
HD74HC670 4-by-4 Register File (with 3-state outputs) Description The HD74HC670, 16-bit register file is organized as 4 words of 4 bits each and separate on-chip decoding is provided for addressing the four word locations to either write-in or retrieve data.
This permits simultaneous writing into one location and reading from another word location.
Four data inputs are available which are used to supply the 4-bit word to be stored.
Location of the word is determined by the write-address inputs A and B in conjunction with a write-enable signal.
Data applied at the inputs should be in its true form.
That is, if a high-level signal is desired from the output, a high-level is applied at the dat...


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