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| Product attributes | Property Value |
| Manufacturer | IDT, Integrated Device Technology Inc |
| Product Series | 74FCT |
| 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-QSOP |
The 74FCT540CTQG is a high-performance inverting buffer from IDT, designed for 5V applications. It operates from 4.75V to 5.25V and features 3-State outputs for bus-oriented designs. With 15mA source and 64mA sink current, it provides excellent drive capability for demanding loads. The single-channel architecture is perfect for critical signal paths requiring inversion. Packaged in a 20-SSOP, it is suitable for industrial and automotive electronics where reliability is paramount. Typical uses include bus isolation, clock inversion, and sensor signal conditioning.
- Robust Output Drive (64mA Sink): Ensures reliable switching of high-capacitance loads without additional buffers.
- 3-State Outputs: Facilitates bus sharing and prevents data corruption in multi-device systems.
- Extended Temperature Range: Operates from -40°C to 85°C, ideal for automotive and industrial use.
- Compact SSOP Package: Saves PCB space while maintaining excellent thermal and electrical performance.
Bus Isolation in Multi-Processor Systems
In multi-processor designs, the 74FCT540CTQG isolates shared data buses. The 3-State outputs prevent bus contention when multiple processors access the same memory or peripherals.
Inverting Buffer for Clock Distribution
Use this buffer to invert and distribute clock signals to multiple loads. The 64mA sink capability ensures fast rise/fall times, maintaining signal integrity across long PCB traces.
Industrial Sensor Interfacing
In industrial controls, sensor outputs often require inversion and buffering. This IC provides clean logic levels with high noise immunity, operating reliably from -40°C to 85°C.
Memory Read/Write Control
For SRAM or EEPROM interfaces, the inverting buffer can generate complementary control signals. The 15mA source current drives address lines efficiently, reducing propagation delays.
Automotive Body Electronics
In automotive body control modules, this buffer handles signal inversion for door locks and lighting. Its wide temperature range and robust output drive make it ideal for harsh environments.
Test and Measurement Equipment
For ATE systems, the 3-State output enables efficient channel multiplexing. The inverting function simplifies logic level conversion in complex test vectors.
- Q: What is the logic family of the 74FCT540CTQG?
- A: It is part of the 74FCT family, offering high-speed performance with low power dissipation.
- Q: What is the function of this device?
- A: It is an inverting buffer with 3-State outputs, used for signal inversion and bus isolation.
- Q: How many channels are available?
- A: It provides 1 channel, making it suitable for single-line buffering applications.
- Q: What is the output type?
- A: The outputs are 3-State, allowing high-impedance states for shared bus architectures.
- Q: What is the supply voltage range?
- A: It operates between 4.75V and 5.25V, compatible with standard 5V logic systems.
- Q: What package is this IC offered in?
- A: It comes in a 20-SSOP (0.154", 3.90mm Width) package.
74FCT540CTQG.pdf
- Q: What is the logic family of the 74FCT540CTQG?
- A: It is part of the 74FCT family, offering high-speed performance with low power dissipation.
- Q: What is the function of this device?
- A: It is an inverting buffer with 3-State outputs, used for signal inversion and bus isolation.
- Q: How many channels are available?
- A: It provides 1 channel, making it suitable for single-line buffering applications.
- Q: What is the output type?
- A: The outputs are 3-State, allowing high-impedance states for shared bus architectures.
- Q: What is the supply voltage range?
- A: It operates between 4.75V and 5.25V, compatible with standard 5V logic systems.
- Q: What package is this IC offered in?
- A: It comes in a 20-SSOP (0.154", 3.90mm Width) package.