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| Product attributes | Property Value |
| Manufacturer | Fairchild Semiconductor |
| Product Series | 74VHCT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Non-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-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SOIC |
| ROHS |  |
The 74VHCT244AM is a dual-channel non-inverting buffer from Fairchild Semiconductor, designed for high-speed 5V logic systems. Operating from 4.5V to 5.5V, it delivers 8mA output current per channel with 3-State outputs for bus-oriented applications. Its TTL-compatible inputs allow seamless interfacing with 3.3V logic. Housed in a 20-SOIC package, this buffer is ideal for memory address driving, signal conditioning, and general-purpose buffering in industrial and consumer electronics.
- TTL-Compatible Inputs: Simplifies interfacing with 3.3V logic while operating at 5V, reducing level-shifting circuitry.
- 3-State Outputs: Enables bus sharing and multiplexing without external isolation components.
- High-Speed 74VHCT Family: Provides fast propagation delays suitable for high-frequency digital systems.
- 8mA Output Drive: Capable of driving moderate capacitive loads and multiple fan-outs.
5V Bus Interfacing
Use the 74VHCT244AM to buffer address or data lines in 5V microprocessor systems. Its 3-State outputs allow multiple peripherals to share the same bus without contention.
Signal Buffering for High-Capacitance Loads
When driving long PCB traces or multiple IC inputs, the 74VHCT244AM provides the necessary drive strength (8mA) to maintain signal integrity and reduce propagation delays.
Level Shifting from 3.3V to 5V
With TTL-compatible inputs, this buffer can accept 3.3V logic signals and output clean 5V logic levels, enabling mixed-voltage system design.
Driving LED Arrays
Each output can sink 8mA, sufficient to drive standard LEDs with current-limiting resistors, making it useful for indicator light control in industrial panels.
Memory Address Buffering
In memory subsystems, the 74VHCT244AM isolates the memory array from the CPU, preventing loading effects and ensuring reliable read/write operations.
Test Equipment and Instrumentation
Use it to buffer measurement signals in bench instruments, where 3-State outputs enable multiplexing of multiple test points to a single ADC input.
- Q: What logic family does the 74VHCT244AM belong to?
- A: It belongs to the 74VHCT family, which is a high-speed CMOS logic family with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 2 channels, designed to strengthen signals for driving heavier loads.
- Q: What is the output type?
- A: The outputs are 3-State, allowing connection to shared buses with high-impedance control.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, making it suitable for standard 5V systems.
- Q: What is the package type?
- A: It comes in a 20-SOIC package with a width of 7.50mm.
- Q: What is the output current capability?
- A: It can source and sink 8mA of current per output.
74VHCT244AM.pdf
- Q: What logic family does the 74VHCT244AM belong to?
- A: It belongs to the 74VHCT family, which is a high-speed CMOS logic family with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 2 channels, designed to strengthen signals for driving heavier loads.
- Q: What is the output type?
- A: The outputs are 3-State, allowing connection to shared buses with high-impedance control.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, making it suitable for standard 5V systems.
- Q: What is the package type?
- A: It comes in a 20-SOIC package with a width of 7.50mm.
- Q: What is the output current capability?
- A: It can source and sink 8mA of current per output.