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Product Detailed Parameters
- Description：IC FF D-TYPE SNGL 8BIT 20LCC
- Series：74FCT
- Mfr：Renesas Electronics Corporation
- Package：Tray
- Function：Standard
- Type：D-Type
- Output Type：Tri-State, Non-Inverted
- Number of Elements：1
- Number of Bits per Element：8
- Clock Frequency：-
- Max Propagation Delay @ V, Max CL：5.2ns @ 5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：15mA, 48mA
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Iq)：1.5 mA
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-LCC (8.89x8.89)
- Package / Case：20-LCC
- Input Capacitance：6 pF
- Grade：-
- Qualification：-
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Overview
The 74FCT574CTLB is an octal D-type flip-flop with 3-state outputs manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 4.5V to 5.5V and features a propagation delay of 7.2ns at 50pF load. The device provides high-level output current of 15mA and low-level output current of 48mA, with static current consumption of 1mA. It is housed in a 20-LCC package and supports industrial temperature ranges.
Feature Summary
- Octal D-type flip-flop architecture with single element configuration
- Three-state output capability for bus-driven applications
- Positive-edge triggering mechanism for data latching
Applications
- Parallel data storage in digital systems
- Bus interface circuits requiring tri-state control
- Register files in microprocessor-based designs
Procurement Notes
This component is officially listed as obsolete or end-of-life by the manufacturer. Verify availability through authorized distributors for remaining stock. Confirm RoHS compliance status, as older FCT series parts may not meet current environmental regulations. Check datasheet revisions for any pinout or electrical characteristic updates before finalizing procurement plans.
Selection Notes
Select this part when an octal D-latch with tri-state outputs is required in a 20-lead LCC package. Ensure the design accommodates the 4.5V to 5.5V operating voltage range. Consider the 7.2ns propagation delay for timing constraints. Verify that the 20-LCC footprint matches the PCB layout requirements, as alternative packages like CDIP or TQFP exist within the same family.
Part Context
The 74FCT574CTLB belongs to the FCT (Fast CMOS) logic family, designed for high-speed performance with CMOS compatibility. It is part of the broader 74FCT574 series, which includes variants in different packages such as CDIP and TSSOP. The CTLB suffix specifically denotes the 20-LCC package type. This series bridges the gap between standard TTL speeds and advanced CMOS technologies.
Replacement Considerations
Direct replacements include other 74FCT574 variants in different packages, such as 74FCT574ATDB (CDIP) or 74FCT574T (SOIC), provided the package footprint allows adaptation. Cross-reference with IDT-branded equivalents if available, as IDT was acquired by Renesas. Verify electrical parameters match exactly, especially output drive strength and propagation delay.
