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.
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.
74HCTN – Nexperia – PCB Footprint & Symbol Download