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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Last edited by jayanth. Losses in inductor of a boost converter 9.

All have the same pinouts. Now with Unlimited Eagle board sizes! Originally Posted by jayanth. Thanks everybody for your comments.

This is the set of voltage levels used for input and output logic values. ModelSim – How to force a struct type written in SystemVerilog?

But yes, specific LED driving buffer chips would be far better.

The pins E1 and E2 are inverted and E3 is normal in datasheet. The time now is AF modulator in Transmitter what is the A? I don’t see a relevance of keeping it.


Datasheet, PDF – Alldatasheet

Hierarchical block is unconnected 3. Please do not ask for unpaid help via PM, use the forum. In model E1 is normal and E2 and E3 are inverted.

I connected E1, E2, E3 together to a logic toggle and tried giving 1 and 0.

33 Fantastic 74238 Datasheet

I apologize for not being clear enough. You can get these from the data sheet for the device. I need extra NOT gates?. What is the function of TR1 in this 7438 3.

Can anybody fix the model. How reliable is it? 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?

Synthesized tuning, Part 2: Wouldn’t that voltage propagate backwards and hurt the 74AC? Part and Inventory Search.

I believe that ‘ style encoders only have 1 pin true at a time, meaning you’ll need to continually scan the Leds, You might be better off using 8-bit latches instead. Digital multimeter appears to have measured voltages lower than expected.


The project is really a 24×16 LED matrix. Create a thread in the forum so that other members can benefit from the posted answers. LS is Low-powered shottky.

Dec 248: Does it matter if I use a 74hc, 74hct, 74ac, etc.? It’s a Proteus model error. PV charger battery circuit 4.

There is also the ‘ series of 4 line to 16 line decoders. While I agree with the above statements, none of them actually answer the OP’s original question. HC datasheer is a good all-round choice, will work at 3V3 as well as 5V, good output drive, fast, low power, cheap I need to completely turn off the outputs without changing the output state i. What is your connection, Did you used inversion or directly connected??