HD74LS04P NOT GATE

The HD74LS04P is a common digital integrated circuit, specifically a Hex Inverting NOT Gate from the 74LS (Low-Power Schottky) logic family.

Here are its core specifications and relevance:

• Type: Logic Gate / Digital Integrated Circuit (IC).

• Function: Contains six independent NOT gates (Inverters). It is fundamental for signal inversion, delay, and buffer duties.

• Family:LS (Low-Power Schottky), providing a good combination of speed and low power consumption for digital control systems.

• Supply Voltage (V_CC): Standard TTL voltage of 5.0V 

• Package: Standard 14-pin Dual In-line Package (DIP) (the 'P' suffix often denotes DIP).

• Relevance to Safety/Compliance: This chip would be used extensively in the low-voltage control circuitry to implement precise logic and timing required by the safety features:

  • Signal Inversion: Creating inverted control signals necessary for gate drivers or activating protection logic.

  • Buffer/Drive: Using gates in parallel to "buffer" a signal and increase its driving current, ensuring clean pulses are sent to components like the IR2112 or the thermal protection latch.

  • Oscillator/Delay: Used in combination with passive components to create simple, timed delays or auxiliary clock signals, which might be critical for the soft-start or controlled shutdown sequence mandated by the 120C protection scheme.