Other Parts Discussed in Thread: SN74AXC4T245-Q1, SN74AVC2T45-Q1
Hello,
Kindly review the attached design using 74AVC4T245QRGYRQ1
Thanks,
Melbin
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Hello,
Kindly review the attached design using 74AVC4T245QRGYRQ1
Thanks,
Melbin
Hello,
We are working on a project with 74AVC4T245QRGYRQ1 in it.
Kindly review the attached schematics and let me know the review comments.
Hello Melbin,
I have reviewed the schematic and have a couple of comments.
1. You might consider the SN74AXC4T245-Q1 device instead, as it was recently released and also has 2 available smaller packages than the one you are using the RSV and the BQB packages. But if you prefer the device you are using, then that is fine also and we will be happy to support you.
2. For any I/O pins that are unused, its best to tie both the input and output to GND directly to avoid any potential for a floating input that could increase current consumption of the device.
3. For the dive at the all the way bottom right, your OE pin for the first set of channels is disabled, so channel 1A1 will not be able to translate properly. 1OE should be tied low.
Otherwise looks very good with appropriate bypass capacitors, and OE and DIR pins defined.
Best,
Michael
Unused inputs must not be left open. See [FAQ] What should be done with unused I/O pins of the level translator devices?
When you have only two signals, consider using a smaller device like the SN74AVC2T45-Q1.
Hey Melbin,
To add to Clemens' feedback, U364 has an error with the OE and Dir pins (channel 1 is disabled permanently and both channels are from B to A).
Melbin,
I noticed that you have already posted this. In an effort to consolidate posts on E2E, I have merged the threads.
Best,
Danny