Basic Circuit

74 series digital circuit of 7491A 74L91 8 shift register

Published:2011/3/31 1:40:00 Author:Ecco | Keyword: digital circuit , shift register

7491A, 74L91, 74LS91, 74HC91 8 shift register   (View)

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74 series digital circuit of 7490A 74L90 decade computer

Published:2011/3/31 1:27:00 Author:Ecco | Keyword: digital circuit, decade computer

7490A, 74L90, 74LS90, 74C90 decade computer Binary frequency and fifth frequency; Door re-zero input and re-set 9 input (used as the complement of applications for BCD9); To utilize the maximum count length of the counter, the input B and output QA could be connected, after input count pulse adds to input A, the out is like the description shown in the menu: output QD connects to input A, and adds the input count to output QA. It will produce input B of frequency square-wave, and get symmetrical frequency count.   (View)

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74 series digital circuit of 7449 74LS49 BCD seven segment decoder/driver

Published:2011/4/1 3:23:00 Author:Ecco | Keyword: digital circuit, BCD seven segment , decoder, driver

Effective high level; Collector circuit output; Turning off input; Having the function of light intensity modulation; The maximumoutput voltage of 74LS49 is 5.5V, absorbing current is 8mA.   (View)

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74 series digital circuit of 74LS86 74F86 quad 2 input exclusive-or gate

Published:2011/3/31 0:54:00 Author:Ecco | Keyword: digital circuit , quad 2 input , exclusive-or gate

74 series digital circuit of 74LS86 74F86 quad 2 input exclusive-or gate   (View)

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74 series digital circuit of 7448A 74LS48 BCD seven segment decoder/driver

Published:2011/4/1 3:18:00 Author:Ecco | Keyword: digital circuit, BCD , seven segment, decoder, driver

7448A, 74LS48, 74C48BCD seven segment decoder/driver Effective high output; There's an boost resistor inside the circuit, so there's no need to use external resistor; Pilot light input; Leading edge and back porch zero lights turning off control; Having the function of light intensity modulation; The maximum output voltage is 5.5V; Absorbing current: 6448 is 6.4mA, 74LS48 is 6mA. The pin is 7446A.   (View)

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74 series digital circuit of 7485 74LS85 4 pull amplitude comparator

Published:2011/3/31 21:36:00 Author:Ecco | Keyword: digital circuit, 4 pull, amplitude comparator

74 series digital circuit of 7485 74LS85 4 pull amplitude comparator   (View)

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74 series digital circuit of 7483A 74LS83A synchronous 4 binary full adder

Published:2011/3/31 21:33:00 Author:Ecco | Keyword: digital circuit, synchronous 4, binary full adder

7483A, 74LS83A, 74HC83, 74C83synchronous 4 binary full adder(carry lookahead)   (View)

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74 series digital circuit of 7480 door input full adder

Published:2011/3/31 22:43:00 Author:Ecco | Keyword: digital circuit, door input, full adder

7480 door input full adder 1.A=AC+A*+A1·A2, B=BC+B+B1·B22.When A* is used as input, A1 and A2 should be low, when B* is used as input, B1 and B2 should be low.3. When A1 and A2 or B1 and B2 are used as input, A* or B* should be used as completing line and logic.   (View)

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74LS78A 74HC78 double J - K negative edge trigger( with preset public clear and public clock terminal)

Published:2011/3/31 22:36:00 Author:Ecco | Keyword: double J - K , negative edge , trigger, public clear terminal, public clock terminal, preset

74LS78A 74HC78 double J - K negative edge trigger( with preset public clear and public clock terminal) Unsteady state. When the preset and remove terminal return in high level, the state could not be kept. And the level of Qo is equal to Q before eatablishing steadystate input.   (View)

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74 series digital circuit of 7475 74L75 4-bit bistable D-type latch

Published:2011/4/1 1:00:00 Author:Ecco | Keyword: digital circuit , 4-bit, bistable, D-type latch

7475, 74L75, 74LS75, 7HC754-bit bistable D-type latch The Q's level from Qo to G, which is from high level to low level: G=allowable terminal.   (View)

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74 series digital circuit of 7472 74H72 input J - K master-slave flip-flop

Published:2011/4/1 0:43:00 Author:Ecco | Keyword: digital circuit, input J - K , master-slave flip-flop

7472, 74H72,74L72 input J - K master-slave flip-flop(with preset and remove terminal) Unsteady state. When the preset and remove terminal return in high level, the state could not be kept. And the level of Qo is equal to Q before eatablishing steadystate input.   (View)

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74 series digital circuit of 7470 input J - K positive edge trigger

Published:2011/4/1 1:50:00 Author:Ecco | Keyword: digital circuit, input J - K, positive edge, trigger

7470 input J - K positive edge trigger (with set and remove terminal) Unsteady state. When the preset and remove terminal return in high level, the state could not be kept. And the level of Qo is equal to Q before eatablishing steadystate input.   (View)

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74 series digital circuit of 7468 dual decade counter

Published:2011/4/1 1:20:00 Author:Ecco | Keyword: digital circuit, dual decade , counter

The counter 1 is in binary and quinary system, the counter 2 is a kind of decade counter. The primary is counting with 50MHz.   (View)

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74 series digital circuit of 74HC58 3 input expander

Published:2011/4/1 2:40:00 Author:Ecco | Keyword: digital circuit , 3 input, expander

74H61 3 input expander X=ABC(when connecting to the Xinput terminal of 74H52)   (View)

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The applied circuit 1 of monolithic precision function generator ICL8038

Published:2011/3/31 3:20:00 Author:Ecco | Keyword: applied circuit, monolithic, precision function generator

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The applied circuit 2 of monolithic precision function generator ICL8038

Published:2011/3/31 3:19:00 Author:Ecco | Keyword: applied circuit, monolithic , precision function generator

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The applied circuit 3 of monolithic precision function generator ICL8038

Published:2011/3/31 3:18:00 Author:Ecco | Keyword: applied circuit , monolithic, precision function generator

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Lower Power Consumption Differential Input-Differential Output Circuit

Published:2011/3/22 3:48:00 Author:may | Keyword: Lower Power Consumption, Differential Input-Differential Output

Lower Power Consumption Differential Input-Differential Output Circuit is shown in the following picture:   (View)

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MP3 Player Power Filter Circuit

Published:2011/3/22 3:48:00 Author:may | Keyword: MP3 Player, Power Filter

MP3 Player Power Filter Circuit is shown in the following picture:   (View)

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74 series digital circuit of 74H103 double J - K negative edge trigger

Published:2011/3/30 1:48:00 Author:Ecco | Keyword: digital circuit, double J - K negative edge , trigger

74 series digital circuit of 74H103 double J - K negative edge trigger(with remove terminal)   (View)

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