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| Product attributes | Property Value |
| Manufacturer | onsemi |
| Product Series | 74VHC |
| 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 | 8mA, 8mA |
| Voltage - Supply | 2V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 20-TSSOP |
| ROHS |  |
The MC74VHC540DT is a high-speed inverting buffer from onsemi, part of the 74VHC logic family. It features a single channel with 3-State output, allowing for bus isolation and multiplexing. Operating from 2V to 5.5V, it supports both 3.3V and 5V systems, with 8mA output drive capability. The wide temperature range of -55°C to 125°C makes it suitable for demanding industrial and automotive environments. Housed in a compact 20-TSSOP package, this buffer is ideal for signal inversion, bus driving, and level-shifting applications in mixed-voltage digital systems.
- Wide 2V to 5.5V Supply Range: Compatible with both 3.3V and 5V logic systems, reducing design complexity and BOM cost.
- 3-State Outputs: Enables bus sharing and multiplexing, critical for efficient data bus architectures.
- Extended Temperature Range (-55°C to 125°C): Reliable operation in harsh industrial and automotive environments.
- High-Speed 74VHC Technology: Provides fast propagation delays while maintaining low power consumption.
Bus Line Driving
The 3-State outputs and inverting buffer function make it ideal for driving high-capacitance bus lines in digital systems, preventing signal degradation and ensuring clean data transmission.
Memory Address Buffering
In microprocessor systems, this buffer can isolate and invert address lines, reducing loading on the CPU and improving signal integrity for reliable memory access.
Level Shifting for Mixed-Voltage Systems
With a wide 2V to 5.5V supply range, it can interface between 3.3V and 5V logic domains, simplifying mixed-voltage PCB designs without additional level-shifter ICs.
Signal Inversion in Control Logic
Use it to invert control signals like reset lines or enable signals, ensuring correct logic polarity for various peripheral devices in embedded systems.
Industrial Sensor Interfacing
In industrial controls, the buffer can condition and invert sensor output signals, providing a robust interface to PLCs or microcontrollers over extended temperature ranges (-55°C to 125°C).
Test Equipment and Instrumentation
The high-impedance 3-State output allows multiple buffers to be connected to a common test point, enabling multiplexed signal monitoring in automated test equipment.
- Q: What logic family does the MC74VHC540DT belong to?
- A: It belongs to the 74VHC (Very High-Speed CMOS) logic family, offering a balance of speed and low power consumption.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 1 channel, designed to invert and buffer digital signals while providing high drive capability.
- Q: What is the output type?
- A: The output is 3-State, allowing the output to be disconnected (high-impedance) for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 2V to 5.5V, making it compatible with both 3.3V and 5V systems.
- Q: What is the output current capability?
- A: It can source and sink 8mA of current per output.
- Q: What package is available?
- A: It comes in a 20-TSSOP (Thin Shrink Small Outline Package) with a 4.40mm width.
MC74VHC540DT.pdf
- Q: What logic family does the MC74VHC540DT belong to?
- A: It belongs to the 74VHC (Very High-Speed CMOS) logic family, offering a balance of speed and low power consumption.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 1 channel, designed to invert and buffer digital signals while providing high drive capability.
- Q: What is the output type?
- A: The output is 3-State, allowing the output to be disconnected (high-impedance) for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 2V to 5.5V, making it compatible with both 3.3V and 5V systems.
- Q: What is the output current capability?
- A: It can source and sink 8mA of current per output.
- Q: What package is available?
- A: It comes in a 20-TSSOP (Thin Shrink Small Outline Package) with a 4.40mm width.