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Product attributes Property Value
Manufacturer onsemi
Product Series 74VHCT
Packaging Bulk |
Part Status Active
Logic Type Buffer, Inverting
Number of Elements 2
Number of Bits per Element 4
Input Type -
Output Type 3-State
Current - Output High, Low 8mA, 8mA
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 20-TSSOP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The MC74VHCT240ADT from onsemi is a dual inverting buffer featuring 3-state outputs, part of the 74VHCT logic family. It is designed for 5V systems, operating from 4.5V to 5.5V, and offers TTL-compatible inputs for easy integration with legacy logic. Each output can source or sink 8mA, providing adequate drive for bus lines and control signals. Housed in a 20-pin TSSOP package, this buffer is well-suited for bus isolation, signal inversion, and level translation in high-speed digital applications.

  • TTL-Compatible Inputs: Allows direct connection to TTL logic without additional interface circuitry, simplifying mixed-logic designs.
  • 3-State Outputs: Facilitates bus-oriented architectures by allowing multiple devices to share a data line.
  • High-Speed Operation: The 74VHCT family provides very fast propagation delays, critical for high-frequency applications.
  • Wide Temperature Range: Operates from -40°C to 85°C, suitable for demanding industrial environments.

5V Bus Driving and Isolation

Designed for 5V operation, the MC74VHCT240ADT is perfect for driving and isolating 5V buses in legacy systems, ensuring signal integrity with its 3-state outputs.

Inverting Signal Conditioning

Its inverting function is useful for generating complementary signals or for active-low control lines in digital circuits, simplifying logic design.

Interfacing TTL and CMOS Logic

The 74VHCT family features TTL-compatible inputs, allowing direct interfacing with TTL logic while providing CMOS-level outputs, bridging two logic standards.

Memory and Peripheral Control

Used to buffer and invert control signals like chip select or write enable, it isolates the controller from the load of multiple memory or peripheral devices.

Industrial Sensor Interfaces

With an operating temperature range of -40°C to 85°C, it is suitable for industrial environments where sensor signals need to be buffered and inverted before processing.

High-Speed Data Paths

The very high-speed nature of the 74VHCT family ensures minimal propagation delay, making it suitable for high-frequency data paths in communication equipment.

Q: What is the logic family of the MC74VHCT240ADT?
A: It belongs to the 74VHCT (Very High-Speed CMOS with TTL-compatible inputs) family.
Q: What is the function of this IC?
A: It is a dual (2-channel) inverting buffer with 3-state outputs.
Q: How many channels does it have?
A: It has 2 inverting buffer channels.
Q: What is the output type?
A: The outputs are 3-State, enabling connection to shared buses.
Q: What is the operating voltage range?
A: It operates from 4.5V to 5.5V, making it ideal for 5V systems.
Q: What package is available?
A: It comes in a 20-pin TSSOP package (4.40mm width).
Base Product Number : MC74VHCT240A
20-TSSOP 3-State Output 4.5V to 5.5V 74VHCT Buffer Bus Interface Inverting Logic IC onsemi TTL Compatible
Q: What is the logic family of the MC74VHCT240ADT?
A: It belongs to the 74VHCT (Very High-Speed CMOS with TTL-compatible inputs) family.
Q: What is the function of this IC?
A: It is a dual (2-channel) inverting buffer with 3-state outputs.
Q: How many channels does it have?
A: It has 2 inverting buffer channels.
Q: What is the output type?
A: The outputs are 3-State, enabling connection to shared buses.
Q: What is the operating voltage range?
A: It operates from 4.5V to 5.5V, making it ideal for 5V systems.
Q: What package is available?
A: It comes in a 20-pin TSSOP package (4.40mm width).