Part Number
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SN74LS398 |
Manufacturer
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Motorola |
Description
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QUAD 2-PORT REGISTER |
Published
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Apr 11, 2016 |
Detailed Description
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QUAD 2-PORT REGISTER
The SN54 / 74LS398 and SN54 / 74LS399 are Quad 2-Port Registers. They are the logical equivalent of...
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Datasheet
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SN74LS398
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Overview
QUAD 2-PORT REGISTER
The SN54 / 74LS398 and SN54 / 74LS399 are Quad 2-Port Registers.
They are the logical equivalent of a quad 2-input multiplexer followed by a quad 4-bit edge-triggered register.
A Common Select input selects between two 4-bit input ports (data sources).
The selected data is transferred to the output register on the LOW-to-HIGH transition of the Clock input.
The SN54/ 74LS398 features both Q and Q inputs, while the SN54/ 74LS399 has only Q outputs.
• Select From Two Data Sources • Fully Positive Edge-Triggered Operation • Both True and Complemented Outputs on SN54/ 74LS398 • Input Clamp Diodes Limit High-Speed Termination Effects
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC Qd Qd...
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