SN74AVC4T245-Q1: DESIGN REVIEW

Melbin Manuel

Intellectual 300 points

Part Number: SN74AVC4T245-Q1
Other Parts Discussed in Thread: SN74AXC4T245-Q1, SN74AVC2T45-Q1

Hello,

Kindly review the attached design using 74AVC4T245QRGYRQ1
Thanks,

Melbin

74AVC4T245QRGYRQ1_SCH_28DEC2020.pdf

over 3 years ago

0 Melbin Manuel1 over 3 years ago

Prodigy 180 points

Hello,

We are working on a project with 74AVC4T245QRGYRQ1 in it.
Kindly review the attached schematics and let me know the review comments.

74AVC4T245QRGYRQ1_SCH_28DEC2020.pdf

0 Michael J Schultis over 3 years ago

TI__Mastermind 24485 points

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