pmos

, typical value 3.4 V, input low level maximum 0.8 V, the maximum output level is 0.5 V. LS-TTL input high level minimum 2 V, output high level minimum class I 2.5 V, Class II, Class III 2.7 V, typical value 3.4 V, input low level maximum class I 0.7 V, class II and Class III 0.8 V. The maximum output is class I 0.4 V, Class II and Class III 0.5 V, and the typical value is 0.25 V. The power supply of the TTL circuit can only be in the range of + 5 V ± 10%, and the number of Fan outlets is less t

-down resistor and PNP or PMOS tubes are used, they can form non-NAND logic, or convert and/or logic using a negative logical relationship. Note: wire or drop-down resistor to the ground. (~ A) + (~ B) = ~ (AB );These transistors are often open collector oC or source open circuit OD output of some logical circuits. this logic is usually called line and/line or logic. When you see that some chip's oC or OD output end are connected together and there i

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. Version 4: VCC and Vee appear in the dual-pole transistor circuit, and are related to the Collector emissio

reached.Limit: R is infinitely small, and C is infinitely large (Gnd). Then the output will not change! Driving Capability of P0 port of 51 Single Chip Microcomputer P0 is an open-circuit interface with drain, so it is no problem to drive the led when the current is filled. That is: VCC> throttling resistance> led> P0. Fill current: When the IO port is low, the current from the outside of the IO port "fill" into the microcontroller opposite is "pull current" when the IO port is high, the curren

Nor flash and nand flash are not clear, nornandDifferences between nor flash and nand flash I have been studying embedded systems for a while. I was confused when I first came into contact with nor and nand. I had to write a blog to remember clearly. First, they are all storage devices, collectively referred to as flash memory. The reason for their difference must be the hardware difference. // It seems that men and women have different hardware before developing physiological differences Diffe

Norflash and nandflash cannot be clearly understoodDifferences between nor flash and nand flash I have been studying embedded systems for a while. I was confused when I first came into contact with nor and nand. I had to write a blog to remember clearly. First, they are all storage devices, collectively referred to as flash memory. The reason for their difference must be the hardware difference. // It seems that men and women have different hardware before developing physiological differences

, and it will increase the power consumption of the system and also affect the speed. So I cut off a part of it later. That's the back of the Lvttl.The Lvttl is also divided into 3.3V, 2.5V, and lower voltage lvttl (Low Voltage TTL).3.3V LVTTL:vcc:3.3v;voh>=2.4v;volvih>=2v;vil2.5V LVTTL:vcc:2.5v;voh>=2.0v;volvih>=1.7v;vilThe lower Lvttl is not used first. Multi-use in the processor and other high-speed chips, when used to view the chip manual is OK.TTL usage Note: TTL level is generally more sev

PMOS tube can be used to form a non-NAND logic, or to convert and/or logic with a negative logic relationship.Note: line or, connect the pull-down resistor to ground. (~a) + (~b) =~ (AB);These transistors are often the open collector OC or open source OD output of some logic circuits. This logic is often referred to as line and/or line or logic, when you see the OC or OD output of some chips connected together, and there is a pull-up resistor, which

memory. Modern SCM uses the VLSI technology to make the memory chip, each chip contains a considerable number of storage bits, and then a number of chips constitute the memory. At present, the main material used in SCM is metal oxide field effect transistor (MOS), including PMOs, NMOS, CMOS, especially NMOS and CMOS applications most widely. RAM (random access storage) is a kind of semiconductor memory. You must work with power on, or you will lose

The TTL circuit is the abbreviation for transistor-transistor logic circuit (transister-transister-logic), which is a digital integrated electricalA wide range of roads. It is manufactured with a bipolar process and features high speed, low power consumption and variety.CMOS is: A metal-oxide-semiconductor (metal-oxide-semiconductor) structure of transistors referred to as MOS transistors,There are P-type MOS tubes and N-Type MOS tubes. An integrated circuit consisting of a MOS tube is called a

or source s of these transistors are connected to the ground, and as long as a transistor is saturated, the junction (line) is pulled to the ground level.Because these transistors have a base injection current (NPN) or gate Plus high level (NMOS), the transistor is saturated, so the relationship of these bases or gates to this node (line) is either non-nor logic. If the node is followed by an inverter, it is the or or logic.Note: Personal understanding: Line and, connect the pull-up resistor to

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2 V, output high level minimum class I 2.5 V, Class II, Class III 2.7 V, typical value 3.4 V, input low level maximum 0.8 V, the maximum output level is 0.5 V. LS-TTL input high level minimum 2 V, output high level minimum class I 2.5 V, Class II, Class III 2.7 V, typical value 3.4 V, input low level maximum class I 0.7 V, class II and Class III 0.8 V. The maximum output is class I 0.4 V, Class II and Class III 0.5 V, and the typical value is 0.25 V. The power supply of the TTL circuit can only

is small. Therefore, if you have requirements for latency, we recommend that you use the descent edge output. 2. What is line or logic and line and logic? On a single node (line), connect an upstream resistor to the Collector C or drain D of the power supply VCC or VDD and N or NMOS transistors, the emission pole E or source Pole s of these transistors are connected to the ground line. As long as there is a transistor saturated, this node (line) is pulled to the ground wire.Because the base pol

integrated circuits, which are now called VLSIverylarge-scaleintegration. An integrated circuit, as its name implies, is a circuit that combines components to achieve the required functions. So what is integrated? Think about the high school circuit, it is nothing more than resistance, capacitance, inductance, transistor, switch said small bulb is also true... Is not suitable ). Yes, the integration is basically equivalent to the replacement of these things. Someone asks, what about diode magic

) source channel is not disconnected (2) leakage end channel to clip off Features: (1) controllability: input voltageVGS control output current (2) Constant Current: Output CurrentIDBasically no output voltageVImpact of DS Purpose: amplifier and constant current source Basic switch circuit of MOS Circuit disconnected Circuit Conduction Four basic types of MOS Working principle of CMOS Inverter When the NMOS tube and the PMOS tube appear in

collector C or drain D of the NMOS transistor,The emission pole e of these transistorsOr source Pole sAll are connected to the geographic line,If one transistor is saturatedThis node (line) is pulledGround Power flat.Because the base pole of these transistors is injected with current () or the gate is added with a high level (NMOS ),The transistor is saturated.,So the relationship between these base poles or gate nodes (wires) is or notNor Logic.If this node is followed by an inverter,Or logic.