Product data sheet. 1. General description. The 74HC03; 74HCTO3 is a quad 2- input NAND gate with open-drain outputs. Inputs include clamp diodes that. 74HC03 Logic Gates are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 74HC03 Logic Gates. Datasheet, 3, In Stock. 74HC03 datasheet, 74HC03 circuit, 74HC03 data sheet: PHILIPS – Quad 2-input NAND gate,alldatasheet, datasheet, Datasheet search site for Electronic.

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So just to be clear, we agree that if both inputs are 1, the output will be 0. To drive an LED, you need to do something like this: Sign up using Email and Password.

74HC03 Datasheet(PDF) – NXP Semiconductors

Email Required, but never shown. The poor photo of your breadboard is not very helpful.

The 74HCT03 has open-drain outputs. I have recently bought this IC: It’s a NAND gate.

74HC/HCT03 Quad 2-input NAND Gate

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And a LED to pin 3. Sign up or log in Sign up using Google.

74HC03 Datasheet PDF

Thanks for you answer, and i do know that the picture is silly, i just dunno how to make schematic. The pullup resistor goes from the NAND gate output pin to the power supply voltage. This chip just won’t work for me. Also, please give us a proper schematic. You say pullup resistor, do i have to connect it from pin 14 or?

Spehro Pefhany k 4 I have connected the pins to 10k resistors to ground, so they can be 0 if no power is on.

This is what the internal circuit looks like on the 74HC03 from the datasheet. You will need to add a pull-up 74hd03 to see the output go high. I then connect the wires to pin 1 and 2. Post as a guest Name.

Joe Hass 7, 1 19 I’m using a breadboard as you can see beolow, and no matter what I do, it wont work. Sign up using Facebook.

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Home Questions Tags Users Unanswered. I migth be stupid, but I can’t really figure this out. 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. The funny thing is that whenever I disconnect the wire that goes from pin 7 to ground, the LED starts to light.

The NAND gates in this chip can only pull the output low, so you need something else to pull the output high assuming that you want to see it go high. This should mean that the IC is ON.