Pinards PDF

74HC/HCT Octal D-type transparent latch;. 3-state. For a complete data sheet, please also download: • The IC06 74HC/HCT/HCU/HCMOS. The 74HC; 74HCT is a high-speed Si-gate CMOS device and is pin The 74HC; 74HCT has octal D-type transparent latches featuring separate. 74HCTN 74HC/HCT; Octal D-type Transparent Latch; 3-state;; Package: SOT (DIP20), Details, datasheet, quote on part number: 74HCTN.

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As is stated in the below table the output max current is 35mA for each output, being the nominal current 20mA, enough to control a LED in every output. You are not wrong. Sign up or log in Sign up using Google. It’s not always LED’s but they are non inductive.

Post as a guest Name. The load is between the IC and ground source current? There is a ready made solution and the supplier insists it will be OK but having read the data sheet I don’t think it will. It would have been so simple to use a current drain driver but sadly it’s not an option.

I’ve been reading a lot of data sheets of late looking for chips that will work for a small project. Q are 8 outputs and attach to equipment that requires 20 ma. You should make sure that the design actually tries to do that. A simple indicator LED will be fine at 5 mA. My solution is to use P channel mosfets to switch the power. I should have added that there are 2 LEDS being driven from each output.

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Home Questions Tags Datasneet Unanswered. Sign up using Facebook. My belief is that turning on all 8 outputs at 20 ma exceeds the IC max current. However, driving a Datsaheet at 20 mA is often unnecessary today.

74HCTN Datasheet(PDF) – NXP Semiconductors

Nik Middleton 6 5. Would really appreciate some input.

And that supply current is also the main part of the current that feeds outputs. This website has a built-in schematic editor. Hi, basic schematic added. Email Required, but never shown. Get on to your supplier and ask them to justify their thoughts.

74HC573; 74HCT573 Octal D-type Transparent Latch; 3-state

The IC has a global limit of 70 mA. I have no control over end devices. Glad to know i’m not going nuts.

Sign up using Email and Password. Data sheet is here: I’m hoping someone can help a noob out here. My understanding is that is has a max of 35 mA per pin, but a total of 70 mA for the IC. I’m loosing some voltage 4.

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74HCTN – Nexperia – PCB Footprint & Symbol Download

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of service74hct57n policy and cookie policyand that your continued use of the website is subject to these policies. Maybe you will be OK afterall, or maybe a simple part change can fix everything up. 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.

You can edit your question and then click on the icon that looks like a schematic symbol, and it will load the schematic editor. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.