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CD74FCT244TQM
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Product Detailed Parameters
- Description：IC BUFF NON-INVERT 5.25V 20QSOP
- Series：-
- Mfr：Harris Corporation
- Package：Bulk
- Logic Type：Buffer, Non-Inverting
- Number of Elements：1
- Number of Bits per Element：8
- Input Type：-
- Output Type：3-State
- Current - Output High, Low：15mA, 64mA
- Voltage - Supply：4.75V ~ 5.25V
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：20-QSOP
- Grade：-
- Qualification：-
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Overview
The CD74FCT244TQM is an octal buffer and line driver manufactured by Harris Corporation. It belongs to the FCT logic series and features eight non-inverting outputs with three-state capability. The device operates within a supply voltage range of 4.5V to 5.5V and utilizes CMOS technology. It is housed in a 20-pin QSOP surface-mount package. Key electrical characteristics include a high-level output current of 15mA and a low-level output current of 64mA. The component supports an operating temperature range from -40°C to +85°C.
Feature Summary
- Provides eight non-inverting signal paths for bus driving applications
- Features three-state outputs to facilitate multiple bus configurations
- Utilizes FCT CMOS technology for high-speed performance
Applications
- Memory address and data bus drivers
- Clock drivers and buffering
- Bus-oriented transmissions
Procurement Notes
Verify the manufacturer origin, as Harris Corporation assets were acquired by Texas Instruments. Confirm the specific package variant matches the QSOP-20 footprint. Check RoHS compliance status, as older Harris production runs may not meet current environmental standards. Ensure the part number suffix accurately reflects the tape-and-reel or tube packaging configuration required for assembly.
Selection Notes
Select this component when an octal buffer with three-state control is required for 5V logic systems. The FCT series offers faster switching speeds compared to standard HC logic. Verify that the load capacitance requirements are met by the specified output drive strength. Ensure the input voltage levels are compatible with the system's logic family to guarantee proper switching thresholds.
Part Context
This component is part of the CD74FCT244 family of octal buffers. Similar variants include the CD74FCT244ATM and CD74FCT244TQM, which share functional specifications but differ in packaging or speed grades. The FCT series was designed to bridge the performance gap between TTL and CMOS technologies, offering TTL-compatible inputs with CMOS noise immunity.
Replacement Considerations
Texas Instruments CY74FCT244TQCT is a confirmed substitute from the same lineage. Verify pin compatibility and electrical parameters before substitution. Note that manufacturer branding may differ due to corporate acquisitions.
