74HC08 PDF

3 Description. The SNx4HC08 devices contain four independent. 2-input AND gates. They perform the Boolean function Y = A ○ B or Y = A + B in positive logic. 74HC08 Datasheet, 74HC08 Quad 2-input AND Gate Datasheet, buy 74HC 74HC08D from NEXPERIA >> Specification: AND Gate, 74HC08, 2 Input, mA, 2 V to 6 V, SOIC

Author: Aragul Mezijar
Country: Algeria
Language: English (Spanish)
Genre: Career
Published (Last): 20 May 2007
Pages: 487
PDF File Size: 1.74 Mb
ePub File Size: 1.90 Mb
ISBN: 641-7-24676-594-2
Downloads: 91181
Price: Free* [*Free Regsitration Required]
Uploader: Arashirr

It is important to give the correct part numbers! Get the pinout correct. Negative to resistor, resistor to GND. Whiskeyjack 3, 2 16 Seems like you got an arduino.

74HC08 AND Gate Example Circuit | Sully Station Technologies

Connect an LED to pin 1 and pin 2 each along with current limiting resistors. Now remove the wire and connect pin1 to GND this time. Positive of LED to pin 2. Home Questions Tags Users Unanswered. Here is the pinout diagram:. Then shouldn’t the diagram I drew above work? Negative to the GND via a resistor.

And TTL outputs are much better at sinking current rather than sourcing it, so don’t try to drive 74h08 LED output to ground. Here is the pinout diagram: I have the above IC and I want to check them before using them. Sign up using Facebook. This verifies a working gate.

TOP Related  CELEBRITY SLEUTH PDF

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Access Denied

Sign up or log in Sign up using Google. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Circuit to test ICs at home?

But keep the switch and LED connections as they are. What 74hc088 I do to test them? If your parts are reallyand with no letters other than possibly L or LS in the middle, like 74LS04 they are bipolar TTL logic, and require a 5 volt power supply for correct operation.

Peter Bennett 36k 1 28 The 74HC parts can use a power supply between 2 volts and 6 volts. Now take a wire and connect pin1 to VCC.

TTL inputs are best driven by pulling them down or letting them be pulled up with a obvious name, here pullup resistor. You must connect the inputs directly to ground to have them seen as a Low 0.

Where should I connect the LED on pin 2 of ? Write the truth table, get the pinout and follow the same pattern. You can proceed like this for The inputs of bipolar TTL parts will usually appear as logic High 1 when not connected.

TOP Related  FOREX DLA BYSTRZAKW PDF

74HC08 Datasheet

If this gives you too much trouble mentally, 74hv08 unused inverters to switch the input and output polarities. Those parts are CMOS, so my last paragraph applies. You do need a current-lilmiting resistor Ohms or so in series with the LED, but with pin 1 tied to Vcc, the output of the inverter on pin 2 will be Low, so the LED won’t light.

Sign up using Email and Password. Post as a guest Name. You need to repeat it six times to check all gates.

Similarly, you can think about all other ICs. You are halfway through. Here are circuits to use with, for instance, the and If the parts have a C in the middle 74C04 or 74HC04they are CMOS, and the inputs are very high impedance, and will be in an unknown state when not connected – they must be connected to the positive supply for a High, and to ground for a Low. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and 74nc08 policyand that your continued use of the website is subject to these policies.

It’s just logic High and Low.