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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | 54F |
| 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 | 12mA, 48mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 20-CDIP (0.300", 7.62mm) |
| Supplier Device Package | 20-CERDIP |
The 54F240DC from National Semiconductor is a dual inverting buffer with 3-State outputs, designed for high-reliability applications. Operating from 4.5V to 5.5V, it sources 12mA and sinks 48mA, providing robust drive for TTL loads. Housed in a ceramic 20-CDIP package, it operates from -55°C to 125°C, making it ideal for military, aerospace, and industrial environments where extreme conditions are expected.
- Extended Temperature Range (-55°C to 125°C): Suitable for military and aerospace applications.
- 3-State Outputs: Enable bus sharing in multi-processor systems.
- High Sink Current (48mA): Drives heavy loads like relays and long cables.
- Ceramic DIP Package: Provides hermetic sealing and high reliability.
Military Avionics Bus Buffering
In military avionics, the 54F240DC buffers data buses with its 3-State outputs. The -55°C to 125°C range ensures operation in extreme altitudes and temperatures.
Spacecraft Telemetry
For satellite telemetry systems, this inverting buffer processes command signals. The ceramic CDIP package provides hermetic sealing against vacuum and radiation.
Industrial Process Control
In harsh industrial environments, use this buffer to invert and drive control signals to actuators. The high sink current (48mA) drives relays directly.
Defense Communication Systems
For secure communication equipment, the 54F240DC provides signal inversion in encrypted data paths, maintaining signal integrity over long distances.
Nuclear Power Plant Monitoring
In radiation-hardened environments, this buffer handles sensor signals. The wide temperature range and robust packaging ensure reliability.
High-Reliability Computing
For redundant computing systems, the 3-State outputs allow multiple processors to share a bus without conflict, essential for fault-tolerant designs.
- Q: What logic family does the 54F240DC belong to?
- A: It belongs to the 54F logic family, offering fast bipolar TTL performance.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 2 channels, providing signal inversion and buffering.
- Q: What is the output type?
- A: It features 3-State outputs for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, standard for TTL logic.
- Q: What is the package type?
- A: It comes in a 20-CDIP (0.300", 7.62mm) ceramic DIP package.
- Q: What is the output current capability?
- A: It can source 12mA and sink 48mA, suitable for driving TTL loads.
54F240DC.pdf
- Q: What logic family does the 54F240DC belong to?
- A: It belongs to the 54F logic family, offering fast bipolar TTL performance.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 2 channels, providing signal inversion and buffering.
- Q: What is the output type?
- A: It features 3-State outputs for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, standard for TTL logic.
- Q: What is the package type?
- A: It comes in a 20-CDIP (0.300", 7.62mm) ceramic DIP package.
- Q: What is the output current capability?
- A: It can source 12mA and sink 48mA, suitable for driving TTL loads.