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| Product attributes | Property Value |
| Manufacturer | Harris Corporation |
| Product Series | |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, 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) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SSOP (0.154", 3.90mm Width) |
| Supplier Device Package | 20-SSOP (0.154", 3.90mm Width) |
The CD74FCT240DTQM is a high-speed inverting buffer from Harris Corporation, designed for 5V digital systems. It features a single channel with 3-State outputs, enabling efficient bus interfacing and signal isolation. With a supply voltage range of 4.75V to 5.25V, it is ideal for legacy and current 5V logic applications. The device can source 15mA and sink 64mA, providing robust drive capability. Its 20-SSOP package offers a compact solution for space-constrained boards. Typical applications include memory buffering, signal inversion, and industrial control logic.
- High-Speed FCT Technology: Ensures minimal propagation delay, critical for high-frequency bus applications.
- Strong 64mA Sink Current: Provides excellent drive capability for heavily loaded lines and multiple inputs.
- 3-State Outputs: Allows for bus multiplexing and isolation, preventing data contention.
- Wide Operating Temperature Range (-40°C to 85°C): Suitable for industrial environments.
High-Speed Bus Interfacing
Use the CD74FCT240DTQM in 5V digital systems to buffer and invert address or data lines. Its high-speed FCT technology minimizes propagation delay, ensuring reliable operation in high-frequency bus architectures.
Memory Address Buffering
In microprocessor and memory systems, this buffer can drive multiple memory banks. The 3-State outputs allow the buffer to be disabled, effectively isolating the memory from the bus during other operations.
Signal Inversion and Conditioning
When a logic signal needs to be inverted, this IC provides a clean, buffered output. The strong 64mA sink current ensures signal integrity even when driving long PCB traces or multiple loads.
Industrial Control Logic
In industrial controllers operating at 5V, this buffer can interface between a control logic unit and high-current peripherals. Its wide operating temperature range (-40°C to 85°C) suits harsh environments.
Test and Measurement Equipment
For bench equipment, the CD74FCT240DTQM can buffer signals from a device under test. The 3-State feature is useful for multiplexing multiple test points onto a single measurement channel.
Peripheral Driver
With its high sink current, it can directly drive LEDs, relays (with external diodes), or other low-power actuators, simplifying interface design in 5V logic systems.
- Q: What is the logic family of the CD74FCT240DTQM?
- A: This device belongs to the FCT (Fast CMOS TTL) logic family, offering high-speed performance.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 1 channel, designed to invert and buffer digital signals.
- Q: What type of output does it have?
- A: It features 3-State outputs, allowing for connection to shared bus lines.
- Q: What is the operating voltage range?
- A: The recommended supply voltage is 4.75V to 5.25V, making it suitable for 5V systems.
- Q: What is the output current capability?
- A: It can source 15mA and sink 64mA, providing good drive strength for bus applications.
- Q: What package is available?
- A: It comes in a 20-SSOP (0.154", 3.90mm Width) package.
CD74FCT240DTQM.pdf
- Q: What is the logic family of the CD74FCT240DTQM?
- A: This device belongs to the FCT (Fast CMOS TTL) logic family, offering high-speed performance.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 1 channel, designed to invert and buffer digital signals.
- Q: What type of output does it have?
- A: It features 3-State outputs, allowing for connection to shared bus lines.
- Q: What is the operating voltage range?
- A: The recommended supply voltage is 4.75V to 5.25V, making it suitable for 5V systems.
- Q: What is the output current capability?
- A: It can source 15mA and sink 64mA, providing good drive strength for bus applications.
- Q: What package is available?
- A: It comes in a 20-SSOP (0.154", 3.90mm Width) package.