Differences between VCC, VDD, VSS, Vee, and VPP

What are the differences between VCC, VDD, and VSS in electronic circuits?

I. Explanation

VCC: c = circuit indicates the circuit, that is, the voltage of the access circuit; VDD: D = device indicates the working voltage inside the device;

VSS: S = series indicates the public connection, which usually refers to the public grounding terminal voltage of the circuit.

Ii. Description

1. for digital circuits, VCC is the power supply voltage of the circuit, VDD is the operating voltage of the chip (usually VCC> VDD), and VSS is the grounding point.

2. Some ICS have both VDD pins and VCC pins, indicating that the device itself has a voltage conversion function.

3. In an FET (or coms device), VDD is the drain pole, VSS is the source pole, and VDD and VSS are the component pins, not the power supply voltage.

Statement 1:

VCC, VDD, Vee, and VSS are the power supply junction of chips and decomposition circuits. the polarity of the power supply depends on the device material. VCC generally refers to a transistor C pole directly connected to an integrated or decomposed circuit, and Vee refers to an E pole connected to a transistor in an integrated or decomposed circuit. Similarly, VDD and VSS are the D and S poles connected to the inner and decomposed circuit. For example, if the integration is made of P trench E/DMOs process, its VDD should be connected to the negative power supply, while VSS should be connected to the positive power supply.

They are named like this:

VCC indicates the power supply connected to the transistor collector (c.

Vee indicates the power supply connected to the transistor emission pole (e.

VDD indicates the power supply of the drain pole (d) connected to the Fet.

VSS indicates the power of the source pole (s) connected to the Fet.

Generally, VCC and VDD are positive power supplies, while Vee and VSS are negative or local power supplies.

Statement 2:

Differences between VDD, VCC, VSS, Vee, and VPP

VDD: Power Supply voltage (Single Pole device), power supply voltage (4000 Series Digital Circuits), drain voltage (FET)

VCC: Power Supply voltage (bipolar device), power supply voltage (74 Series Digital Circuits), voice control carrier (voice controlled carrier)

VSS: ground or power supply negative pole

Vee: negative voltage power supply; source pole of the FET (s)

VPP: programming/erasure Voltage