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Product Detailed Parameters
- Description：8 BIT BUS INTERFACE REGISTER
- 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 CY74FCT821CTQC is an 8-bit bus interface register manufactured by Texas Instruments. It belongs to the FCT logic series and utilizes CMOS technology. The component features a non-inverting configuration with tri-state outputs, housed in a QSOP-20 package. It operates within a supply voltage range of 4.75 V to 5.25 V. The device supports surface mount installation and functions at temperatures between -40°C and +85°C.
Feature Summary
- Provides 8-bit data storage capability for bus interface applications
- Features tri-state outputs for efficient bus line management
- Utilizes FCT CMOS technology for high-speed performance
Applications
- Data storage in computer systems
- Bus interface circuits
- Memory buffering applications
Procurement Notes
Verify the specific datasheet version for the CY74FCT821CTQC to confirm pinout compatibility and electrical characteristics. Ensure that the QSOP-20 package dimensions match the target PCB footprint. Check moisture sensitivity levels and reflow soldering profiles prior to assembly. Confirm RoHS compliance status if required by project specifications.
Selection Notes
Select this component when an 8-bit latch with tri-state output is required for 5V logic systems. The FCT series offers speed comparable to LS TTL but with CMOS power consumption. Consider the QSOP-20 package size constraints and thermal requirements during design. Verify input thresholds against the driving source logic family.
Part Context
This part is a member of the CY74FCT541T/FCT374T/FCT821T family from Texas Instruments. These devices are designed for high-speed digital applications requiring reliable data retention. The FCT series bridges the gap between standard TTL and advanced CMOS technologies, providing robust performance in mixed-signal environments.
Replacement Considerations
Consult official substitution guides for compatible parts within the same FCT logic family. Verify pin-to-pin compatibility and electrical parameter equivalence before replacing the component.
