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| Product attributes | Property Value |
| Manufacturer | onsemi |
| Product Series | 74VHCT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Transceiver, Non-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 | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.209", 5.30mm Width) |
| Supplier Device Package | SOEIAJ-20 |
| ROHS |  |
The MC74VHCT245AM from onsemi is an octal (8-bit) non-inverting transceiver from the 74VHCT family. Designed for 5V operation (4.5V to 5.5V), it provides bidirectional data transfer with 3-State outputs for bus-oriented applications. With 8mA output drive, it is suitable for moderate-speed signal routing. The 20-SOIC package is compact for space-constrained designs.
- Bidirectional Operation: Allows data flow in both directions, reducing component count in bus designs.
- TTL-Compatible Inputs: Ensures direct compatibility with legacy TTL logic, simplifying system integration.
- 3-State Outputs: Provides high-impedance state for bus sharing and isolation.
- Standard 5V Supply: Works with existing 5V power rails without additional regulation.
Bidirectional Bus Transceiver
The MC74VHCT245AM is ideal for connecting two 5V data buses, allowing data to flow in either direction under the control of a direction pin (DIR).
Memory Data Bus Isolation
In 5V embedded systems, this transceiver isolates the CPU data bus from the memory array, preventing bus contention during read/write cycles.
Peripheral Interface
Use it to interface a 5V microcontroller to external peripherals like ADCs or DACs, providing buffered bidirectional communication.
Level Shifting (5V to 5V with TTL)
While operating at 5V, its TTL-compatible inputs allow it to interface with older TTL logic, ensuring compatibility in mixed-logic systems.
Industrial Control Backplane
In industrial PLCs, this transceiver drives signals across a backplane, handling the capacitive load and ensuring reliable data transfer between modules.
Test and Measurement Equipment
For automated testers, the 3-State outputs allow multiple instruments to share a common data bus, controlled by a central controller.
- Q: What is the logic family of the MC74VHCT245AM?
- A: It belongs to the 74VHCT family, which is a high-speed CMOS family with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a single-channel (octal) non-inverting transceiver, allowing bidirectional data flow.
- Q: How many channels does it have?
- A: It has 1 channel, but that channel is 8 bits wide (octal), providing 8 bidirectional lines.
- Q: What is the output type?
- A: The outputs are 3-State, enabling direction control and bus isolation.
- Q: What is the voltage range?
- A: It operates from 4.5V to 5.5V, making it suitable for 5V systems.
- Q: What package is available?
- A: It is offered in a 20-SOIC (0.209", 5.30mm Width) package.
MC74VHCT245AM.pdf
- Q: What is the logic family of the MC74VHCT245AM?
- A: It belongs to the 74VHCT family, which is a high-speed CMOS family with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a single-channel (octal) non-inverting transceiver, allowing bidirectional data flow.
- Q: How many channels does it have?
- A: It has 1 channel, but that channel is 8 bits wide (octal), providing 8 bidirectional lines.
- Q: What is the output type?
- A: The outputs are 3-State, enabling direction control and bus isolation.
- Q: What is the voltage range?
- A: It operates from 4.5V to 5.5V, making it suitable for 5V systems.
- Q: What package is available?
- A: It is offered in a 20-SOIC (0.209", 5.30mm Width) package.