description. The 74AC circuit is designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation. A. ACTIVE. LCCC. FK. 1. TBD. POST-PLATE. N / A for Pkg Type. – 55 to A. SNJ54LS. FK. EA. ACTIVE. Product data sheet. 2 of NXP Semiconductors. 74HC; 74HCT 3-to-8 line decoder/demultiplexer. 3. Ordering information. 4. Functional diagram.

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There’s a meaningless difference in pins names, at least in some vendor’s data sheets, but input polarity is correctly assigned to pin numbers. Equating complex number interms of the other 6.

Measuring air gap of a magnetic core for home-wound inductors and flyback transformer 7. This is the set of voltage levels used for input and output logic values. CrossRoads on Nov 07, What is the function of TR1 in this circuit 3.

How reliable is it? Similar Threads adout decoder 74HC Alternatively, I could redesign using 74HCs non-inverting version of the and use N-channel logic level MOSFETs with a pulldown resistor to ground, would that be a better way to go? Yes, logic outputs are best protected from current spikes caused by trying to try and drive a capacitance of more than a couple of hundred pF.


Synthesized tuning, Part 2: Digital multimeter appears to have measured voltages lower than expected. But yes, specific LED driving buffer chips would be far better. Please don’t make requests for help in private using PM. All have the same pinouts.

Currently their gates are connected directly to the pins of the ‘s and other posts here etc. It’s a Proteus model error. I don’t see a relevance of keeping it.

I need extra NOT gates? Do you know what the voltage drop of the LED is mA? Formal verification of safety-critical software, software development, and electronic design and prototyping.

AF modulator in Transmitter what is the A?

CD74HC 74HC IC 3 to 8 Line Decoder Demultiplexer

CMOS Technology file 1. I need extra NOT gates?. LS is Low-powered shottky.

Which P-channel mosfets are you using – in particular, are they meant for 5V gate drive, and do they have a low enough Rds on at 1. HC family is a good all-round choice, will work at 3V3 as well as 5V, good output drive, fast, low power, cheap There is also the ‘ series of 4 line to 16 line decoders. When using CC and will be perfectly matched.


Originally Posted by jayanth. Now with Unlimited Eagle board sizes! The project is really a 24×16 LED matrix. Originally Posted by FvM. You don’t need to know those as such, only the knock-on effect. Heat sinks, Part 2: Last edited by FvM; 28th October at It always takes longer than you expect, even when you take into account Hofstadter’s Law.

Datawheet transistor not working 2.

33 Fantastic 74238 Datasheet

Don’t use if can be helped. Dec 248: See page 2 here. Create a thread in the forum so that other members can benefit from the posted answers. You can get these from the data sheet for the device. KeithRB on Nov 07, ,