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SN74HC (ACTIVE) Octal Buffers And Line Drivers With 3-State Outputs. Datasheet ( KB). Diagram click to expand contents. Functional Diagram. An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters . 2 × fo) where: 74HC; 74HCT Octal buffer/line driver; 3-state. Product data sheet. Table 1: Quick reference data. GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns.

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I mean, it gives us the temperatures, but not how the actual component works Eminem 1 3 8. The functional diagram on that datasheet omits the power pins, but they are there and must be powered for the part to function. I’m not sure what you mean by “how it works”. So, how do thy actually works? A line driver is simply a buffer.

Low-power Schottky circuitry reduces power consumption without sacrificing speed. 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 datqsheet of the website is subject to these policies.

The enable function is common to all four drivers and offers the choice of an active-high or active-low enable G, G input. Post as a guest Name. What do you think a buffer is? This allows you to have multiple line drivers on the same wire, and as long as they properly take turns driving it they can share datasheeg single connection.

Eminem – What makes you think the input is connected directly to the output? The datasheet also states: Eminem Language barrier here, I think. It should be noted that the device identified above is a “tri-state” datashee. This chip does not perform any logical function; it is just giving the signal a strength boost.


The circuits that are driving the inputs may not 74hc2444 the power to drive the impedance of a longer wire length.

Hot Licks 3 8. Any way, there is very little information about Line Drivers in general. Jeff Bell 1 4.

How does a Line Driver actually works? – Electrical Engineering Stack Exchange

There are two principal functions of this line driver. I mean, how the can increase the current with just sending the input to the output?

All I see in the inner structure is enables and input to outpuut wires. In case it’s the apparent lack of power to the chip that’s confusing you: I think that in order to reduce the current 74nc244 the FPGA suplies to the servo, I need to put the in between them, thus reducing the “effort” from the Altera.

Email Required, but never shown. As always, the Datasheet provides raw and not very good information about the actual component: It’s as if the chip were disconnected from the wire. Link to AM26LS31 datasheet: That datasheet gives everything you need to actually use a 74HC The increased current is able to overcome the capacitance caused by having many devices on a bus.

And how the can act as a line driver?

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Tristate mode also saves power by not driving the line when there is nothing to send. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. That power is used by each buffer element to increase the load it can drive.

The datasheet tells you pretty much everything you need to actually use the part, though NXP does tend to be a bit sparse on internal details. Sign up using Facebook. If you want more detail, you should start reading about how transistors work, and how they’re used to make the logic gates in the shown datashewt. The line driver also serves to isolate the local circuits from electrostatic discharge from connections that might go off the board.


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How does a line driver actually work? It sounds like you’re looking for a equivalent circuit. This means that it can set 74nc244 line “high”, “low”, or can effectively disconnect itself from the line. This is used in situations where any of several components can “drive” the bus though hopefully not more than one at a time.

Data Sheets

So I’ve searched for days for information about the 74HC line driver. What you put in one end comes out the other. How does a Line Driver actually works? Sign up or log in Sign up using Google. 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 second functionality is that it has a tristate output, which means that when the enable pin is not asserted the chip does not drive the output signal at all. Or the Altera can provide a good current flow to the servo without damaging it’s abilities?