SN74AVC4T245: SN74AVC4T245

Prasanthi Busineni56

Prodigy 145 points

Part Number: SN74AVC4T245
Other Parts Discussed in Thread: SN74AXC4T245

Hi,

I am using SN74AVC4T245 with both VCCA = VCCB=1.8V. DIR=OE=0

one my input 2B2 is at 3.3V standard toggling from 0 to 3.3V. will this create a problem?

will this 3.3V input converted to 1.8V on the other side that is 2A2 pin?

please help

thanks

Prasanthi

over 4 years ago

0 Clemens Ladisch over 4 years ago

Guru 298660 points

No. Yes. See [FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)?

0 Dylan Hubbard over 4 years ago in reply to Clemens Ladisch

TI__Mastermind 45145 points

Hey Prasanthi,

I would also like to add that you can switch to the SN74AXC4T245 device which is p2p and an upgrade to the SN74AVC4T245.

0 Prasanthi Busineni56 over 4 years ago in reply to Clemens Ladisch

Prodigy 145 points

Hi,

This did not resolve my issue. by mistake it was marked as resolved.

please reply to the original question as the datasheet says the inputs are 4.6V tolerant.

SN74AVC4T245 VCCA and OE question... - Logic forum - Logic - TI E2E support forums

e2e.ti.com

Hello, Currently we have a VCCA of 1.8V and we also have a control signal that ranges from (0 - 3.3V) on the inputs of the 1OE and 2OE pins. The datasheet states

also the link above says any input is tolerant up to 3.6V

Thanks

Prasanthi

0 Clemens Ladisch over 4 years ago in reply to Clemens Ladisch

Guru 298660 points

No, this will not create a problem.
Yes, the 3.3 V input will be 1.8 V at the output.

0 Prasanthi Busineni56 over 4 years ago in reply to Clemens Ladisch

Prodigy 145 points

Thank you for reply