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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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.

It can be used, eg, for a “bi-directional” bus between processor and memory or between processor and 744hc244 That power is used by each buffer element to increase the load it can drive. I mean, how the can increase the current with just sending the input to the output? I’m not sure what you mean by “how it works”.


Post as a guest Name. What do you think a buffer is?

And how the can act as a line driver? This chip does not perform any logical function; it is just giving the signal a strength boost. Link to AM26LS31 datasheet: As always, the Datasheet provides raw and not very good information about the actual component: Tristate mode also saves power by not driving the line when there is nothing to send.


The first is to provide a power gain.

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

The datasheet also states: So I’ve searched for days for datashest about the 74HC line driver. I think that in order to reduce the current that the FPGA suplies to the servo, I need to put the in between them, thus reducing the “effort” from the Altera.

Sign up or log in Sign up using Google. Low-power Schottky circuitry reduces power consumption without sacrificing speed.

Home Questions Tags Users Unanswered. There are two principal functions of this line driver.

Datasheets search archive of electronic components datasheets

The increased current is able to overcome the capacitance caused by having many devices on a bus. Email Required, but never shown. Sign up using Email datashet Password. This means that it can set the line “high”, “low”, or can effectively disconnect itself from the line. The line driver also serves to isolate the local circuits from electrostatic discharge from connections that might go off the board.

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. It sounds like you’re looking for a equivalent circuit.


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. Hot Licks 3 8.

74HC Datasheet(PDF) – Motorola, Inc

It should be noted that the device identified above is a “tri-state” driver. The circuits that are driving the datasheey may not have the power to drive the impedance of a longer wire length. I mean, it gives us the temperatures, but not how the actual component works Anyways, if you look around a bit, you can find some slightly better datasheets that have more detailed internal diagrams. 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: So, how do thy actually works?