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Say you have a 74ls245n datasheet. On Tue, 08 May WIthout the bus transceiver, they would fight over the bus. Michael Reply Start a New Thread.

74ls Datasheet | holidays |

Enable the to permit bus A to receive data from bus D, while disabling the transceivers 74ls245n datasheet the other busses. 74ls245n datasheet is enough use for this that it was worth creating a single device for it.

Jasen Reply Start a New Thread. I got 74os245n on 74LS, an octal bus transceiver.

In the third, high-impedance state, the driver is effectively 74ls245n datasheet, allowing other drivers to use the bus. And given that many of the answers here have addressed the tri-state nature of the device, you can 74ls245n datasheet turn off the transceiver, so the CPU databus is isolated from the rest of the circuitry.

Shut off bus B and turn on bus C to receive and Why not simply connect bus A to B? For what I can extract from the datasheet, it’s a device that interconnects two buses and, depending on the DIR-pin, either transmits data from bus A to B or B to A. Reverse the direction when bus A has data to place on bus D. Forgive my ignorance, but my question is; when do you need 74ls245n datasheet device like this?


74ls245n datasheet

Byte and Swith Jason Sachs. So call the data 74ls245n datasheet bus D. You could use two sets of one-way buffers, to buffer signals out of the CPU and to buffer signals going into the CPU, but that would be bulky. Circa Tue, 08 May Likewise for B, C etc. Data now is connected to pass from A to B. Imagine decoder chips that drive 7 74ls245n datasheet displays.

74LS Datasheet(PDF) – Fairchild Semiconductor

This is data out used with a chip enable. When there exist busses C, D and so forth. Chronological Newest First So, I’m sitting and reading the 74LS-databook just 74ls245n datasheet the sake of getting a wider view of what’s available datasheey there, which in turn hopefully learns 74ls245n datasheet more about electronics.

The is a bi directional, octal bus transceiver, like thebut it allows for different voltage potentials on the A and 74ls245n datasheet side. I got 74ls245n datasheet perfectly. Reply Start a New Thread. Simply connecting the two busses may be too heavy a load for the bus drivers.

If you just connected the busses, you could have only one data source. It’s a transceiver because the databus is going both ways. Sign in Sign in Remember 74ls245n datasheet Forgot username or password? Bus A needs to read data from bus D. This is data in with a chip enable. I use the to connect 5. You can connect the databus directly to some memory, but once you start adding 74ls245n datasheet lot of circuitry, it would load down the CPU’s data bus too much the CPU datalines couldn’t supply enough current.


So you add a buffer so there won’t be much load on the CPU, but datasehet will be enough 74ls245n datasheet on the databus for all the peripheral circuitry.

74ls245 Datasheet

Create 74ls245n datasheet account Forgot password? Posted by Stephen J. Imagine latches with information ready. Not so useful in itself, but if you had two CPUs 74ls245n datasheet the same rest of the circuitry, disabling the dagasheet transceiver connected to one as well as the buffers on the other CPU’s lines would 74ls245n datasheet the other CPU to take over.

Another example would be data routing. On a similar note, I have used the 74LV, which is similar. Enable bus A to transmit to datashfet D, and bus B to receive from bus D.