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Product Detailed Parameters
- Description：IC FF D-TYPE SNGL 8BIT 20QSOP
- Series：74FCT
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- 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：10ns @ 5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：32mA, 64mA
- Voltage - Supply：4.75V ~ 5.25V
- Current - Quiescent (Iq)：200 µA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-SSOP
- Package / Case：20-SSOP (0.154", 3.90mm Width)
- Input Capacitance：5 pF
- Grade：-
- Qualification：-
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Overview
The CY74FCT574TQCTG4 is an octal edge-triggered D-type flip-flop manufactured by Texas Instruments. It features eight non-inverting outputs with three-state control, housed in a 20-pin QSOP package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports TTL-compatible inputs. Key electrical specifications include a propagation delay of 10 ns, a high-level output current of -32 mA, and a low-level output current of 64 mA. It functions reliably across an operating temperature range from -40°C to +85°C.
Feature Summary
- Contains eight independent D-type flip-flops with positive-edge triggering for data storage.
- Provides three-state outputs allowing direct bus line connections without external buffers.
- Features TTL-compatible input logic levels for seamless integration with standard logic families.
Applications
- Parallel-to-serial data conversion circuits
- Bus-oriented memory register structures
- I/O port buffering and latching applications
Procurement Notes
Verify the specific suffix G4 indicates lead-free compliance when sourcing. Confirm the QSOP-20 package variant matches the target PCB footprint requirements. Ensure the manufacturer designation aligns with Texas Instruments specifications rather than legacy Cypress designations. Cross-reference the datasheet revision to confirm pinout consistency for the specific batch.
Selection Notes
Select this component for designs requiring high-speed octal data latching with bus drive capabilities. The FCT series offers faster switching speeds compared to standard CMOS alternatives. Consider the 20-lead QSOP form factor for space-constrained surface-mount layouts. Evaluate the 64 mA sink capability against load requirements to ensure signal integrity.
Part Context
This part belongs to the CY74FCT574T family of octal D-type flip-flops. It serves as a digital storage element within the broader FCT logic product line. The device complements other bus drivers and registers in system architectures requiring parallel data handling. It represents a transition point between older bipolar technologies and modern high-speed CMOS solutions.
Replacement Considerations
CY74FCT574ATQCT provides equivalent functionality in the same package type. CY74FCT574TSOC offers identical logical operations in a SOIC-20 housing. CY74FCT574TQCT serves as the base model without the specific lead-free suffix designation.
