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Product attributes Property Value
Manufacturer Harris Corporation
Product Series 54HCT
Packaging Bulk |
Part Status Active
Logic Type Buffer, Non-Inverting
Number of Elements 2
Number of Bits per Element 8
Input Type -
Output Type 3-State
Current - Output High, Low 7.8mA, 7.8mA
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature -55°C ~ 125°C (TA)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 20-CDIP (0.300", 7.62mm)
Supplier Device Package 20-CDIP

The CD54HCT241F3A is a high-speed CMOS octal buffer from Harris Corporation, belonging to the 54HCT logic family. This non-inverting, dual-channel buffer features 3-State outputs for bus isolation and multiplexing. It operates from a 4.5V to 5.5V supply and provides balanced drive capability, sourcing and sinking 7.8mA. The device is TTL-compatible, allowing it to directly interface with legacy TTL logic. Packaged in a 20-CDIP ceramic package, it is designed for operation over the full military temperature range of -55°C to 125°C, making it ideal for high-reliability applications.

  • TTL-Compatible Inputs: Simplifies mixed-technology designs by allowing direct connection to 5V TTL logic without level shifters.
  • Balanced 7.8mA Drive: Provides symmetric source and sink current, ensuring clean signal edges and reducing noise.
  • Ceramic DIP Package: Offers superior hermetic sealing and thermal cycling resistance for military and aerospace use.
  • 3-State Outputs: Enables efficient bus sharing and system-level isolation, critical for multi-processor systems.

TTL-to-CMOS Level Conversion

As a 54HCT device, the CD54HCT241F3A is specifically designed to be pin-compatible and functionally equivalent to 54LS TTL devices, but with CMOS power efficiency. It can directly interface TTL logic to CMOS logic without additional components.

Memory Address Buffering

Use this buffer to drive the address lines of multiple memory chips. The 3-State outputs allow the address bus to be shared with other controllers, and the 7.8mA drive ensures fast edge rates.

High-Reliability Aerospace Systems

The ceramic DIP package and -55°C to 125°C temperature range make this buffer suitable for satellite, avionics, and other high-reliability applications where standard plastic packages are inadequate.

Microprocessor Bus Isolation

The 3-State outputs enable the buffer to isolate the microprocessor from the system bus during reset or when another bus master is active, preventing data corruption.

Industrial Control Signal Conditioning

In industrial PLCs, this buffer can condition and drive control signals to various I/O modules, ensuring clean, strong signals over short PCB traces.

Q: What is the logic family of the CD54HCT241F3A?
A: It belongs to the 54HCT family, which is a high-speed CMOS logic family that is TTL-compatible and operates at 5V.
Q: What is the function of this device?
A: It is a non-inverting buffer with two channels, used to strengthen signals and drive higher capacitive loads.
Q: What is the output type?
A: The outputs are 3-State, allowing the buffer to be placed in a high-impedance state for bus-oriented applications.
Q: What is the operating voltage range?
A: It operates with a standard 5V supply, with a recommended range of 4.5V to 5.5V.
Q: What is the package type?
A: It is available in a 20-CDIP (Ceramic Dual In-line Package) with a 0.300" body width and 7.62mm lead spacing.
Q: What are the output current capabilities?
A: It can both source and sink 7.8mA, providing balanced drive for TTL and CMOS loads.
Base Product Number : CD54HCT241
20-CDIP 3-State 4.5V-5.5V 54HCT Buffer CMOS Harris Logic IC Military Grade TTL Compatible
Q: What is the logic family of the CD54HCT241F3A?
A: It belongs to the 54HCT family, which is a high-speed CMOS logic family that is TTL-compatible and operates at 5V.
Q: What is the function of this device?
A: It is a non-inverting buffer with two channels, used to strengthen signals and drive higher capacitive loads.
Q: What is the output type?
A: The outputs are 3-State, allowing the buffer to be placed in a high-impedance state for bus-oriented applications.
Q: What is the operating voltage range?
A: It operates with a standard 5V supply, with a recommended range of 4.5V to 5.5V.
Q: What is the package type?
A: It is available in a 20-CDIP (Ceramic Dual In-line Package) with a 0.300" body width and 7.62mm lead spacing.
Q: What are the output current capabilities?
A: It can both source and sink 7.8mA, providing balanced drive for TTL and CMOS loads.