Digital Circuit

MCO137-Single chip micro computer control integrated circuit

Published:2011/6/17 7:42:00 Author:leo | Keyword: MCO137-Single chip micro computer control integrated circuit

MCO137 is a kind of single chip micro computer control integrated circuit made by Motorola. It is widely used in automatically soy milk grinder. Function Features: MCO137 integrated circuit contains electric machinery and heating wire control circuit, key switch code control circuit, ring driving circuit, high water level detecting circuit and so on. classic application circuit:MC1037 application is shown in the picture.   (View)

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74 series digital circuit 74LS440/441 four 3-directions bus transceiver

Published:2011/6/26 21:35:00 Author:Nicole | Keyword: 74 series, digital circuit, bus transceiver

74LS440/441/442/443/444, 74HC442/443/444 four 3-directions bus transceiver 74LS440/441 is OC output, 74LS442/443/444 are there state output The functional table   (View)

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VOGUE 9866-1 Communication single-chip integrated circuit diagram

Published:2011/6/1 22:26:00 Author:leo | Keyword: VOGUE 9866-1 Communication single-chip integrated circuit diagram

VOGUE 9866-1 is a type of communication single-chip integrated circuit which is always used in caller ID telephone. 1. Function Features:The integrated circuit VOGUE 9866-1 consists of FSK decoder, duel-tone signals generator, LCD gate driver, keyboard switch coder, keyboard lock 0 controller, busy tone detector, duel-tone 8421 interface, on-hook, burglar alarm, pulse signal generator, buzzer warning controller, mute controller, ringing on/off controller, temperature test controller, mode controller and other circuits. It is usually used together with DTMF caller ID integrated circuit to finish the DTMF caller ID function. 2. Pin functions and data:The integrated circuit VOGUE 9866-1 adopts 100-pin soft package whose chip is directly packed in the LCD. Its pin functions and data are shown in the picture 1-1-1.   (View)

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MC68HCO5C4P-Communication single-chip microcomputer integrated circuit diagram

Published:2011/6/1 22:24:00 Author:leo | Keyword: MC68HCO5C4P-Communication single-chip microcomputer integrated circuit diagram

MC68HCO5C4P is a kind of communication single-chip microcomputer integrated circuit made by Motorola which can be applied in wireless telephone and is used as host control chip in cell phone. 1.Function Feature:The integrated circuit MC68HCO5C4P has one more 'P' than MC68HCO5C4. But they have part of different pins and cannot change directly for the same usage.MC68HCO5C4P is improved on the base of MC68HCO5C4. So most of functions of them are similar which can be found in the introduction of MC68HCO5C4 functions. 2.Pin Functions and dataThe integrated circuit MC68HCO5C4P adopts 40-pin package and is used together with MC68HC5PI. All pins function and data of the integrated circuit are shown in the picture bellow.   (View)

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Biploar Current Sources Circuit Diagram of Optical Coupler

Published:2011/5/20 20:12:00 Author:leo | Keyword: Biploar Current Sources Circuit Diagram of Optical Coupler, PS2501

In the picture, there is a bipolar current sources circuit of optical coupler which consists of two operational amplifiers and four optical couplers. It is used to control the floating bridge output port using the battery for power supply, which is made up of PC3 to PC6.Its feature is to get the bipolar output current sources from single battery UB and adopt single-channel optical coupler PC1 as the control circuit of current output. At the same time, it is also used to improve the output polarity when output current is symmetric.   (View)

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MC14433-A/D Converting Integrated Circuit Diagram

Published:2011/5/21 21:46:00 Author:leo | Keyword: MC14433-A/D Converting Integrated Circuit Diagram

MC14433 is a kind of A/D converting integrated circuit produced by Motorola in USA which is widely applied in the multimeter that has a LED whose automatic range can show 3 1/2. 1.Function features:MC14433 contains a BCD code generating circuit, DS1-DS4 gate circuit of ones, tens, hundreds and thousands, A/D converting circuit, automatic zero set control circuit, voltage circuit of the base power supply as well as other related circuits. 2.Pins function and dataThe integrated circuit MC14433 adopts 24-pin dual line package. The arrangement and functions of its pins are as what is shown in the picture.   (View)

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Video Switching Circuit

Published:2011/4/26 5:48:00 Author:Robert | Keyword: Video, Switching

Video Switching Circuit is shown above. It is a16 points 1 video switching circuit.   (View)

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74 series digital circuit 74LS280 74S280 and other 9 bits odd even generator/validator

Published:2011/4/26 4:32:00 Author:May | Keyword: digital, 9 bits, odd even generator, validator

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74 series digital circuit 74LS445 BCD decimal decoder/driver (OC)

Published:2011/4/26 3:57:00 Author:May | Keyword: digital, BCD, decimal decoder, driver, OC

74 series digital circuit 74LS445 BCD decimal decoder/driver (OC) 74LS145's low voltage type, withstand voltage is 7V; absorption current is 80mA.; typical power consumption is 35mW; Pin diagram and function table is same to 74LS145.   (View)

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74 series digital circuit 74LS448 four three bus receiver (OC)

Published:2011/4/26 3:59:00 Author:May | Keyword: digital, four three bus receiver, OC

Its pin diagram and function table is same as 74LS440.   (View)

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74 series digital circuit 74490 74LS490 etc dual four bit decade counter

Published:2011/4/26 4:07:00 Author:May | Keyword: digital, dual four bit, decade counter

74490, 74LS490, 74HC490 dual four bit decade counter It is the dual type of 7490A and 74LS90 normal counter. The highest counter frequency is 35MHz. It is buffer output.   (View)

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Half four-bit digital voltmeter circuit

Published:2011/4/21 21:12:00 Author:Nicole | Keyword: semi-digital voltmeter

This is a LED display voltmeter circuit composed of DG7135. The minumin range is 200mV, the precision is 0.01%, it adopts LED to display half four-bit reading and positive/negative polarity, it has the flashing function when there is over range, the number update speed is 2.5/s, the input resistance is high, the input leakage current is about 1pA. It uses +5V power supply, the display current is 50mA, the power consumption of other circuit is about 6mA.   (View)

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74 series digital circuit of 74H15 74LS15 3 input nand gate

Published:2011/4/5 22:42:00 Author:Ecco | Keyword: digital circuit, 3 input , nand gate

74H15, 74LS15, 74ALS15, 74S153 input nand gate(OC)   (View)

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Digital counter demonstration circuit

Published:2011/4/12 22:01:00 Author:Nicole | Keyword: digital counter

555 timer is used as clock to drive RS7490 decimal timer, BCD output to 7 section LED. To adjust R1 can change the clock frequency.   (View)

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Len drive circuit diagram of digital camera-recorder

Published:2011/4/1 3:33:00 Author:Nicole | Keyword: len, digital camera-recorder

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74 series digital circuit of 7440 74H40 dual quad input nand buffer

Published:2011/4/2 0:56:00 Author:Ecco | Keyword: digital circuit, dual quad input , nand buffer

7440, 74H40, 74LS40, 74F40, 74ALS40, 74S40dual quad input nand buffer   (View)

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74 series digital circuit of 7438 74LS38 quad 2-input nand buffer(OC)

Published:2011/4/2 0:56:00 Author:Ecco | Keyword: digital circuit, quad 2-input, nand buffer

7438, 74LS38, 74F38, 74ALS38, 74S38quad 2-input nand buffer(OC)   (View)

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74 series digital circuit of 7437 74LS37 quad 2-input nand buffer

Published:2011/4/2 0:56:00 Author:Ecco | Keyword: digital circuit, quad 2-input , nand buffer

74LS37, 7437, 74F37, 74ALS73, 74S37quad 2-input nand buffer   (View)

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74 series digital circuit of 74HC36 74F36 dual 4 input nand gate

Published:2011/4/2 0:57:00 Author:Ecco | Keyword: digital circuit , dual 4 input , nand gate

74HC36, 74F36 dual 4 input nand gate   (View)

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74 series digital circuit of 74HC34 74ALS34 6 buffer

Published:2011/4/2 0:57:00 Author:Ecco | Keyword: digital circuit, 6 buffer

74HC34, 74ALS34 6 buffer   (View)

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