LS20 (using voltage 5±0.3V) or 74HC20 (using voltage 2-6V) have the same logical relationship, both are 4-input ics containing 2 sets of and not gates, of which 7 pins are ground, 14 pins are positive power supply, 1,2,4,5 is the input end of one set, 6 is its outputOut end, 9,10,12,13 is another set of input end, 8 is its output end, pin 3,11 is not used.
LS20 is and not gate chip, 74ls00 is four groups of 2 input terminals with not gate (positive logic). They are basic logic circuits, used to implement and non this logic function. And not gate is a basic logic circuit of digital circuit. Is a superposition of gates and non-gates, with multiple inputs and one output. If the input is represented by 0 and 1, the result of the operation is the product of these two numbers.
ls20 is with non-gate chip, 74ls00 is with 4 groups of 2 input and non-gate.Are used to implement the basic logic circuit, not this logic function. Non-gate circuit is the basic logic circuit of digital circuit. A superposition of gates and non-gates, with multiple inputs and one output. There are two requirements for non-computational inputs. If the input is represented by 0 and 1, the result of the operation is the product of those two numbers.
and non-gate 74LS20 chip is an integrated circuit, specifically bipolar 42 input and non-gate. The chip was developed by Fairchild Semiconductor and was widely used in the 1970s. 74LS20 coresThe chip contains four independent and non-gate circuits, each of which has two inputs, one output, and a common power supply and ground terminal.
ls20 is a common double 4 input and non-gate integrated circuit, commonly used in a variety of digital circuits and single-chip microcomputer systems, its logic function is to complete the logic and non-computing functions of four inputs. The 74ls20 pin diagram is as follows: 74ls20 includes two 4 input and not gates, containing two sets of 4 and not gates. Among them, the first group: 5 input 6 output; Group 2:113 inputs and 8 outputs.
ls20 is two 4-input and non gates, containing twoAn input terminal, an output terminal and a common power supply and ground terminal.
2, ls20 is and non-gate chip, 74ls00 is 4 groups of 2 input and non-gate. Are used to implement the basic logic circuit, not this logic function. Non-gate circuit is the basic logic circuit of digital circuit. A superposition of gates and non-gates, with multiple inputs and one output. There are two requirements for non-computational inputs. If the input is represented by 0 and 1, the result of the operation is the product of those two numbers.
3, LS20 (using voltage 5±0.3V) or 74HC20 (using voltage 2-6V) logicThe relationship is the same, all are 4-input ics containing 2 sets of and not gates, of which 7-pin ground, 14-pin power supply positive, 1,2,4,5 is the input end of one set, 6 is its output end, 9,10,12,13 is another set of input end, 8 is its output end, 3,11 is not used.
1, this is a TTL3 input 3 and gate chip, it has 3 inputs and 1 output.
2, three input and doorThe chip models are as follows: 74LS11: is a three-input and gate chip manufactured by TexasInstruments in a DIP-14 package with a wide operating temperature range and high performance. 74LS09: is a 2-input four-gate (OC) chip. 74LS15: is a 3-input three-and-gate (OC) chip.
3, LS10 is a three-input and gate chip, 74LS10 function is to realize the logic and operation of three input signals, and output the calculation results to the output port Y. Enable port GG2 through controlAnd G3 high and low levels, can realize the chip switching control. 74LS10 Power Supply voltage: 75V to 25V. Input voltage: 0V to 5V. Operating temperature range: 0℃ to 70℃.
4, when doing digital experiments, to use 3 input and gate should be selected model is 74LS11, there are 3 and doors inside, but this laboratory on a chip is not commonly used, you can use proteus simulation.
5, TTL open output back to 3 input three and gate. For example, a 74LS circuit is a set of logic gates, such as a gate, not gate, not gate, or gate. There are mainly a hundred twosInput three input gate group chip, such as or door, and door, not door, or not door.
6, this circuit function for three input and gate form, input A, B, C, output Y.
LS174LS074LS15. 74LS11 with gate chip , is a and gate chip three input and gate chip in DIP-14 package with wide operating temperature range and high performance. 74LS09 is a 2-input four-gate (OC) chip. 74LS15 is a 3-input three-and-gate (OC) chip.
Three input or door chip models have the following and door chip : CD4082: There are two separate 4 input ends with the door. CD4081: There are four independent 2sInput end and door. 74X11: There are three separate 3 inputs with doors. 74X21: There are two separate 4 inputs with doors. 7409TTL: Open collector, with four independent 2 inputs and gates. 7408TTL: has four independent 2 inputs with gates.
The model number is 74HCCD406CD4023. 74HC10: This is a three-input and non-gate chip for TTL and CMOS interfaces. CD4069: This is a chip that contains six and not gates, each of which can accept three inputs, and the output is low if and only if all inputs areIndicates the low level. CD4023: This chip is only suitable for CMOS interface.