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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | 54ACT |
| Packaging | Strip | |
| 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 | - |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-CFlatPack |
| Supplier Device Package | 20-CFlatPack |
| ROHS |  |
The RHFACT244K1 is a dual non-inverting buffer from STMicroelectronics, part of the 54ACT logic family. It operates over a 4.5V to 5.5V supply range and features 3-State outputs for bus-oriented applications. With a wide temperature range of -55°C to 125°C, it is designed for demanding environments. The 20-lead CFlatPack package offers a compact solution for high-reliability systems requiring signal buffering and line driving.
- Wide Temperature Range (-55°C to 125°C): Suitable for military and aerospace applications where extreme conditions are common.
- 3-State Outputs: Enables bus sharing and multiplexing, reducing the need for additional isolation components.
- 54ACT Logic Family: Combines high-speed CMOS performance with TTL-compatible inputs, simplifying mixed-logic interfacing.
- Non-Inverting Buffer: Preserves signal polarity, reducing design complexity and potential errors.
High-Reliability Bus Interfacing
In aerospace and defense systems, the RHFACT244K1 provides robust buffering for data buses. Its 3-State outputs allow multiple devices to share a common bus without contention, while the 54ACT family ensures high noise immunity and fast propagation delays critical for reliable communication.
Signal Buffering in Satellite Electronics
Satellite subsystems require components that withstand extreme temperatures. This buffer operates from -55°C to 125°C, ensuring consistent signal integrity in thermal vacuum cycling. The non-inverting configuration preserves signal polarity, simplifying system design.
Level Shifting for Mixed-Voltage Systems
With a 4.5V to 5.5V supply, this buffer can interface between 3.3V logic and 5V peripherals. The TTL-compatible inputs of the 54ACT family allow direct connection to lower-voltage controllers, providing a simple level-shifting solution without additional components.
Driving High-Capacitance Loads
The buffer's high output drive capability makes it suitable for driving long PCB traces or multiple gate inputs. This is essential in large digital systems where fan-out is a concern, ensuring signals remain clean and within specified voltage thresholds.
Industrial Control and Actuation
In industrial environments with wide temperature swings, this buffer can condition control signals from a central PLC to remote actuators. The 3-State feature enables tri-stating outputs during system reset or diagnostics, preventing unintended actuation.
Radiation-Tolerant System Design
While not explicitly radiation-hardened, the 54ACT family is often used in high-reliability applications. The CFlatPack package offers a smaller footprint and better thermal performance, which is beneficial in sealed or vacuum environments where heat dissipation is challenging.
- Q: What is the logic family of the RHFACT244K1?
- A: It belongs to the 54ACT logic family, offering advanced CMOS performance with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a dual (2-channel) non-inverting buffer with 3-State outputs, ideal for bus driving and signal isolation.
- Q: What is the operating voltage range?
- A: The supply voltage range is 4.5V to 5.5V, making it suitable for standard 5V systems.
- Q: What is the output type?
- A: The outputs are 3-State, allowing connection to shared buses with high-impedance control.
- Q: What package is available?
- A: It comes in a 20-lead CFlatPack, designed for space-constrained and high-reliability applications.
- Q: What is the temperature range?
- A: It operates over the full military temperature range of -55°C to 125°C.
RHFACT244K1.pdf
- Q: What is the logic family of the RHFACT244K1?
- A: It belongs to the 54ACT logic family, offering advanced CMOS performance with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a dual (2-channel) non-inverting buffer with 3-State outputs, ideal for bus driving and signal isolation.
- Q: What is the operating voltage range?
- A: The supply voltage range is 4.5V to 5.5V, making it suitable for standard 5V systems.
- Q: What is the output type?
- A: The outputs are 3-State, allowing connection to shared buses with high-impedance control.
- Q: What package is available?
- A: It comes in a 20-lead CFlatPack, designed for space-constrained and high-reliability applications.
- Q: What is the temperature range?
- A: It operates over the full military temperature range of -55°C to 125°C.