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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | | |
| Part Status | Active |
| Logic Type | Buffer, Inverting |
| Number of Elements | 6 |
| Number of Bits per Element | 1 |
| Input Type | - |
| Output Type | Open Collector |
| Current - Output High, Low | 250µA, 30mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 14-CDIP (0.300", 7.62mm) |
| Supplier Device Package | 14-CDIP (0.300", 7.62mm) |
| ROHS |  |
The SNJ5406J is a high-voltage inverting hex buffer from Texas Instruments, designed for driving loads that require higher voltages than standard logic. It features six open-collector outputs, each capable of sinking 30mA and switching up to 30V. The device operates from a 4.5V to 5.5V supply and is housed in a 14-CDIP ceramic package. Engineered for military and industrial applications, it functions reliably across the -55°C to 125°C temperature range. This buffer is ideal for interfacing 5V logic with relays, lamps, and solenoids, while also providing logic inversion where needed.
- Integrated Inversion: Eliminates the need for separate inverter ICs, saving board space and simplifying design.
- 30V/30mA Drive Capability: Directly switches high-voltage, moderate-current loads without external transistors.
- Open-Collector Flexibility: Allows user-defined output high-level voltage and wired-OR logic connections.
- Rugged Ceramic Package: Provides excellent thermal and mechanical stability for harsh environments.
Inverting High-Voltage Drivers
In military communication equipment, the SNJ5406J's inverting function simplifies logic design when active-low control signals are needed to drive high-voltage displays or indicators.
Relay and Solenoid Control
For industrial automation, this buffer can sink 30mA to energize relay coils. The open-collector output allows the relay supply to be independent of the logic supply, enhancing noise immunity.
Level Shifting with Inversion
When interfacing 5V logic to a 12V or 24V system, this IC both inverts and level-shifts the signal, reducing the need for additional discrete components in control panels.
Driving Incandescent Lamps
In avionics panels, the 30mA sink capability is sufficient to drive small incandescent lamps directly, providing a simple and reliable dimming or status indication solution.
Wired-OR Interrupt Lines
The open-collector outputs can be paralleled to create a wired-OR configuration, allowing multiple fault signals to be combined into a single active-low interrupt line for a central processor.
Automotive Warning Systems
In heavy-duty vehicles, this buffer drives warning lamps and buzzers, with the inverting feature enabling fail-safe designs where a logic low activates the alarm.
- Q: What is the logic family of the SNJ5406J?
- A: It is a standard 5406 series TTL logic device, optimized for high-voltage open-collector switching.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 6 channels, providing logic inversion while driving high-voltage loads.
- Q: What type of output does it have?
- A: It has an Open Collector output, which requires an external pull-up resistor to define the high-level output voltage.
- Q: What is the operating voltage range?
- A: The supply voltage is 4.5V to 5.5V, but the output can switch up to 30V when connected to a suitable pull-up supply.
- Q: What is the output current capability?
- A: Each output can sink up to 30mA, making it suitable for driving relays, lamps, and other moderate-power loads.
- Q: What package is available?
- A: This model is offered in a 14-CDIP (0.300", 7.62mm) ceramic dual-inline package, ideal for through-hole mounting in high-reliability systems.
SNJ5406J.pdf
- Q: What is the logic family of the SNJ5406J?
- A: It is a standard 5406 series TTL logic device, optimized for high-voltage open-collector switching.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 6 channels, providing logic inversion while driving high-voltage loads.
- Q: What type of output does it have?
- A: It has an Open Collector output, which requires an external pull-up resistor to define the high-level output voltage.
- Q: What is the operating voltage range?
- A: The supply voltage is 4.5V to 5.5V, but the output can switch up to 30V when connected to a suitable pull-up supply.
- Q: What is the output current capability?
- A: Each output can sink up to 30mA, making it suitable for driving relays, lamps, and other moderate-power loads.
- Q: What package is available?
- A: This model is offered in a 14-CDIP (0.300", 7.62mm) ceramic dual-inline package, ideal for through-hole mounting in high-reliability systems.