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Product Detailed Parameters
- Description：BUS DRIVER, FCT SERIES
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Function：-
- Type：-
- Output Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Clock Frequency：-
- Max Propagation Delay @ V, Max CL：-
- Trigger Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Input Capacitance：-
- Grade：-
- Qualification：-
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Overview
The CY74FCT2574ATQC is an octal D-type register featuring three-state outputs, manufactured by Texas Instruments. It belongs to the FCT logic series and operates within a supply voltage range of 4.75 V to 5.25 V. The device provides non-inverting data transfer with a typical propagation delay of 6.5 ns at 5 V. It supports high-level output currents of -15 mA and low-level output currents of 12 mA. The component is housed in a 20-pin SSOP package and is designed for surface-mount installation.
Feature Summary
- Octal D-type register architecture providing eight independent data storage channels
- Three-state outputs enabling direct bus-driven connections without external transceivers
- Non-inverting logic polarity ensuring signal integrity across the data path
Applications
- Parallel data buffering in high-speed digital systems
- Bus interface circuits requiring temporary data storage
- Register stages in microprocessor-based control architectures
Procurement Notes
Verify the exact suffix against official Texas Instruments documentation, as variations such as ATQCT or ATSOCE4 indicate specific packaging or environmental compliance differences. Confirm current availability status, as this part number may be discontinued or subject to long lead times depending on the manufacturing date code. Ensure the selected variant matches the required package type and temperature rating for the target application environment.
Selection Notes
Select this component when an octal register with three-state capability is required for bus-oriented applications. The FCT series offers CMOS input compatibility with TTL output levels, facilitating integration with legacy and modern logic families. Consider the 6.5 ns propagation delay and drive strength requirements relative to the system clock speed and load capacitance constraints.
Part Context
This device is part of the Texas Instruments CY74FCT family, which combines CMOS input characteristics with fast TTL-compatible outputs. The FCT series is designed for high-performance digital applications requiring low power consumption and high noise immunity. The octal configuration allows for efficient handling of wide data buses in compact surface-mount packages.
Replacement Considerations
Check for direct pin-to-pin replacements within the same FCT family, such as the CY74FCT574, if latch functionality is acceptable instead of registered output. Verify that any substitute maintains the same 20-pin SSOP footprint and electrical specifications, including voltage range and output drive capabilities.
