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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | 54S |
| 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 | Surface Mount |
| Package / Case | 20-CFlatPack |
| Supplier Device Package | 20-CFP |
The SNJ54S240W is a high-speed inverting buffer from Texas Instruments, part of the 54S Schottky TTL logic family. This dual-channel buffer features 3-State outputs for bus isolation and multiplexing. It operates from a 4.5V to 5.5V supply and offers robust drive capability, sourcing 12mA and sinking 48mA. The device is designed for high-speed applications where fast propagation delays are critical. Housed in a 20-CFlatPack ceramic package, it is rated for the full military temperature range of -55°C to 125°C, making it suitable for the most demanding defense and aerospace systems.
- High-Speed Schottky Technology: Provides significantly faster propagation delays than standard TTL, enabling higher system clock speeds.
- High Sink Current (48mA): Delivers strong drive for heavily loaded buses and long transmission lines, improving signal integrity.
- CFlatPack Ceramic Package: Offers a low-profile, surface-mount form factor with excellent thermal and mechanical reliability for military use.
- 3-State Outputs: Enables safe bus sharing and system-level fault isolation, critical for redundant architectures.
High-Speed Bus Driving
The SNJ54S240W's Schottky TTL technology provides extremely fast propagation delays, making it ideal for driving high-speed memory buses and processor interfaces where timing margins are critical.
Inverting Signal Conditioning
Use this buffer when a logic signal needs to be inverted and strengthened. The 48mA sink capability allows it to drive long cables or multiple loads without signal degradation.
Military Avionics Data Buses
The CFlatPack package is designed for surface-mount assembly on ceramic substrates, offering excellent thermal management and reliability for military avionics and space applications.
High-Capacitance Load Driving
With 48mA sink current, this buffer can drive large capacitive loads, such as long PCB traces or multiple gate inputs, ensuring fast rise and fall times.
Redundant Bus Architectures
The 3-State outputs are essential for implementing redundant bus systems, allowing a failed board to be electrically isolated from the active bus without affecting system performance.
- Q: What is the logic family of the SNJ54S240W?
- A: It belongs to the 54S family, which is a Schottky TTL logic family known for its high speed.
- Q: What is the function of this device?
- A: It is an inverting buffer with two channels, used to invert and buffer digital signals.
- Q: What is the output type?
- A: The outputs are 3-State, allowing the device to be disconnected from the bus for multiplexing or isolation.
- Q: What is the operating voltage range?
- A: It operates with a standard 5V supply, with a recommended range of 4.5V to 5.5V.
- Q: What are the output current capabilities?
- A: It can source 12mA and sink 48mA, providing strong drive capability for bus lines and high-capacitance loads.
- Q: What is the package type?
- A: This version is packaged in a 20-CFlatPack, a flat, surface-mount style package suitable for high-density military boards.
SNJ54S240W.pdf
- Q: What is the logic family of the SNJ54S240W?
- A: It belongs to the 54S family, which is a Schottky TTL logic family known for its high speed.
- Q: What is the function of this device?
- A: It is an inverting buffer with two channels, used to invert and buffer digital signals.
- Q: What is the output type?
- A: The outputs are 3-State, allowing the device to be disconnected from the bus for multiplexing or isolation.
- Q: What is the operating voltage range?
- A: It operates with a standard 5V supply, with a recommended range of 4.5V to 5.5V.
- Q: What are the output current capabilities?
- A: It can source 12mA and sink 48mA, providing strong drive capability for bus lines and high-capacitance loads.
- Q: What is the package type?
- A: This version is packaged in a 20-CFlatPack, a flat, surface-mount style package suitable for high-density military boards.