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Product Detailed Parameters
- Description：IC QUAD 2-INP
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Number of Circuits：-
- Number of Inputs：-
- Features：-
- Voltage - Supply：-
- Current - Quiescent (Max)：-
- Current - Output High, Low：-
- Input Logic Level - Low：-
- Input Logic Level - High：-
- Max Propagation Delay @ V, Max CL：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Grade：-
- Qualification：-
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Overview
The SN54LS09J is a quadruple 2-input open-collector NAND gate manufactured by Texas Instruments. It belongs to the SN54LSxx series of logic integrated circuits, designed for military-grade performance with an extended operating temperature range from -55°C to +125°C. The device utilizes a 14-pin ceramic dual in-line package (CDIP) with glass-sealed construction, ensuring reliability in harsh environments. As an open-collector output device, it facilitates wired-OR logic connections and allows interfacing with various voltage levels, making it suitable for high-voltage or current-driving applications within digital systems.
Feature Summary
- Quadruple 2-input positive-NAND logic functionality
- Open-collector output configuration enabling wired-OR capabilities
- Military-grade temperature range operation (-55°C to +125°C)
- Ceramic dual in-line package with glass-sealed construction
Applications
- Military aerospace digital logic systems
- High-voltage interface circuits requiring level shifting
- Wired-OR bus configurations in industrial control
- TTL-to-non-TTL logic interfacing
Procurement Notes
Verify the manufacturer marking and date code on the ceramic package to confirm authenticity. Ensure the part number suffix matches the specific revision requirements for your design. Cross-reference the datasheet specifications against your system's electrical constraints before integration. Confirm that the open-collector nature aligns with your pull-up resistor strategy.
Selection Notes
Select this component when military-grade environmental tolerance is required alongside standard TTL logic compatibility. The open-collector outputs distinguish it from standard NAND gates like the SN54LS00J, allowing for direct connection to higher voltage loads. Consider the CDIP package size constraints during PCB layout. Verify that the load capacitance limits are respected for the intended switching speeds.
Part Context
This component is part of the broader SN54LSxx family, which provides low-power Schottky logic performance. Unlike the SN54LS00J, which features standard totem-pole outputs, the SN54LS09J specifically offers open-collector outputs. This distinction is critical for applications requiring multiple outputs to share a common line or drive external voltages beyond standard TTL levels.
Replacement Considerations
Direct substitutes include other SN54LS09 variants from different manufacturers such as Motorola or Fairchild, provided they meet the same pinout and electrical specifications. Ensure any replacement maintains the military temperature rating and ceramic package integrity if environmental resilience is required.
