MC9825P

Inverter Gates Overview

The MC9825P is an octal low-side driver circuit designed for automotive applications, manufactured by STMicroelectronics under the Motorola legacy branding. It features eight outputs with a current capability of up to 1A and an on-resistance (R_ON) of ≤0.75Ω at T_J = 25°C. The device supports SPI control for all outputs and parallel inputs for two channels. Key protection mechanisms include short-circuit current limitation, selective thermal shutdown for outputs 7 and 8, overcurrent shutdown for outputs 1 to 6, and intrinsic output voltage clamping at approximately 50V. It operates within a supply voltage range of 4.5V to 5.5V and functions between -40°C and +150°C.

Inverter Gates Feature Summary

• Octal low-side driver architecture dedicated to automotive load management
• Integrated flyback current recirculation via intrinsic output voltage clamping
• Dual control interface combining Serial Peripheral Interface (SPI) and parallel inputs
• Comprehensive output protection including current limiting and thermal/overcurrent shutdown

Inverter Gates Applications

• Automotive resistive and inductive load driving
• Power distribution systems requiring diagnostic feedback
• Vehicle body electronics control modules

Inverter Gates Procurement Notes

Verify that the specific MC9825P variant matches the required package type and temperature grade. Confirm compatibility with the system's SPI protocol and logic levels. Ensure the design accounts for the thermal dissipation requirements given the high operating temperature range. Cross-reference the manufacturer documentation for any specific handling or moisture sensitivity precautions.

Inverter Gates Selection Notes

Select this component when an octal low-side configuration with integrated diagnostics is required for automotive environments. It is suitable for applications needing both serial programmability and fast parallel response. Consider the 1A per channel capacity and the specific protection features for outputs 7 and 8 versus outputs 1-6 when designing the load circuitry.

Inverter Gates Part Context

This part belongs to the L9825 series of power switch ICs. It is functionally equivalent to other octal low-side drivers in the automotive sector but is distinguished by its specific combination of SPI control, parallel inputs, and robust fault protection mechanisms tailored for harsh automotive electrical environments.

Inverter Gates Replacement Considerations

Direct substitutes may include other STMicroelectronics octal low-side drivers from the same family. Verify pinout compatibility and electrical specifications before substitution.