Purchase MC74F256, In-stock MC74F256 From SeekIC.
Part Number: MC74F256
Description: The MC54/74F256 dual addressable latch has four distinct modes of operation which are selectable by co...
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MC74F256
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General Description
MC74F256 General Description
The MC54/74F256 dual addressable latch has four distinct modes of operation which are selectable by controlling the Clear and Enable inputs (see Function Table). In the addressable latch mode, data at the Data (D) inputs is written into the addressed latches. The addressed latches will follow the Data input with all unaddressed latches remaining in their previous states.
In the memory mode, all latches remain in their previous states and are unaffected by the Data or Address inputs. To eliminate the possibility of entering erroneous data in the latches, the enable should be held HIGH (inactive) while
the address lines are changing. In the dual 1-of-4 decoding or demultiplexing mode (MR = E = LOW), addressed outputs will follow the level of the D inputs with all other outputs LOW. In the clear mode, all outputs are LOW and uneffected by the Address and Data inputs.
MC74F256 Features
• Combines Dual Demultiplexer and 8-Bit Latch
• Serial-to-Parallel Capability
• Output from Each Storage Bit Available
• Random (Addressable) Data Entry
• Easily Expandable
• Common Clear Input
• Useful as Dual 1-of-4 Active HIGH Decoder
• Serial-to-Parallel Capability
• Output from Each Storage Bit Available
• Random (Addressable) Data Entry
• Easily Expandable
• Common Clear Input
• Useful as Dual 1-of-4 Active HIGH Decoder
MC74F256 Connection Diagram
MC705C8ACFNR2
PDF/DataSheet Download
- Datasheet: MC705C8ACFNR2
- File Size: 2307881 KB
- Manufacturer: MOTOROLA [Motorola, Inc]
- Click here to Download
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MC74F256 Relative Products
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MC74F251
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MC74F245
The MC54/74F245 contains eight noninverting bidirectional buffers of MC74F245 with 3-state outputs and is intended for bus-oriented applications. Current sinking capability is 24 mA at the A ports and 64 mA at the B ports. The Transmit/Receive (T/R) input de...
MC74F243
The MC54/74F242 and MC54/74F243 are Quad Bus Transmitters/Receivers designed for 4-line asynchronous 2-way data communication between data buses.
MC74F242
The MC54/74F242 and MC54/74F243 are Quad Bus Transmitters/Receivers designed for 4-line asynchronous 2-way data communication between data buses.
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