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Product Detailed Parameters
- Description：BUS DRIVER, FCT SERIES
- Series：74FCT
- Mfr：National Semiconductor
- Package：Bulk
- Function：Standard
- Type：D-Type
- Output Type：Tri-State, Inverted
- Number of Elements：1
- Number of Bits per Element：8
- Clock Frequency：-
- Max Propagation Delay @ V, Max CL：6.5ns @ 5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：15mA, 48mA
- Voltage - Supply：4.75V ~ 5.25V
- Current - Quiescent (Iq)：1 µA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-SOIC
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Input Capacitance：6 pF
- Grade：-
- Qualification：-
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Overview
The 74FCT534SC is an octal D-type flip-flop manufactured by National Semiconductor, now part of Texas Instruments. It features separate D-type inputs for each flip-flop and tri-state outputs designed for bus-oriented applications. The device operates within a temperature range of 0°C to 70°C (TA) and utilizes surface mount technology in a 20-SOIC package with a width of 7.50mm. Electrical characteristics include a quiescent current of 1 µA and an input capacitance of 6 pF.
Feature Summary
- Octal D-type flip-flop architecture with dedicated inputs per stage
- Tri-state outputs optimized for bus-oriented system designs
- High-speed operation with low power consumption profile
Applications
- Bus-oriented data storage systems
- Digital signal processing interfaces
- Memory buffer circuits
Procurement Notes
Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the suffix 'SC' corresponds to the specific 20-SOIC surface-mount package variant required for your PCB layout. Confirm that the operating temperature range of 0°C to 70°C meets your environmental specifications before finalizing procurement orders.
Selection Notes
Select this component when an octal configuration with tri-state control is necessary for bus management. The FCT series offers compatibility with standard logic families while providing improved speed. Consider the 20-SOIC package dimensions for board space constraints. Verify that the 1 µA quiescent current aligns with power budget requirements for the target application environment.
Part Context
This component belongs to the FCT (Fast CMOS Technology) series, which bridges the performance gap between standard TTL and high-speed CMOS logic. The 74FCT534 specifically addresses the need for wide-word data storage in high-speed digital systems. It represents a legacy product line from National Semiconductor that has been transitioned under Texas Instruments' portfolio following corporate acquisition.
Replacement Considerations
Consult official Texas Instruments documentation for direct cross-reference equivalents within the 74FCT family. Verify pinout compatibility and electrical parameters against alternative suppliers offering similar octal D-flip-flops with tri-state outputs.
