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Description: Four independent R-S flip-flops are found in this package. The device has a common tri-state enable control for the four flip-flops.
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Functional Diagram and/or Package:
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Pin Names:
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Vdd - Positive Supply Voltage [3V to 15V]
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Vss - Ground
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S1, S2, S3, S4 - Set
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RST1, RST2, RST3, RST4 - Reset
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Q1, Q2, Q3, Q4 - Outputs
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EN - Enable
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NG - Not Connected
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Truth Table
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Operation Mode:
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In normal operation, S and RST are “0.
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When S and RST are “1' the output goes to “1“ This is a disallowed state.
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When EN is “0”, the output goes to the third state [high-impedance state]. With the input EN=1, the outputs are connected to the internal circuit.
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Electrical Characteristics:
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Other Devices:
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The 4044 is similar, but it has NAND inputs.
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Applications:
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Strobed Registers
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Digital Logic
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Holding Registers [for Multimode Register Systems]
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Four Bits of Independent Storage
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Observations:
- Stages using this device may not be cascaded and are not suitable for counters or shift registers.
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