SN74AVC4T245: SN74AVC4T245RSVR with 1.2V

Tool/software:

Dear Technical Support Team,

Dose SN74AVC4T245RSVR have margin for VCCA =1.2V?

It seems that it's operating with 1.2V⇔3.3V level shift on the board.

According to the datasheet page 1, it can allow for 1.2V.

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"The SN74AVC4T245 is optimized to operate with VCCA/VCCB set at 1.4V to 3.6V. It is operational with VCCA/VCCB as low as 1.2V. This allows for universal low-voltage bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes."

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However "5.3 Recommended Operating Conditions" shows 1.2V(min) and it seems not to have margin on "5.7 Switching Characteristics: VCCA = 1.2V".

For example, "5.8 Switching Characteristics: VCCA = 1.5V ± 0.1V" has margin.

PS. Some E2E post said that the supply goes under the minimum specification then operation is not guaranteed. They recommended using the SN74AXC4T245.

https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1392910/sn74avc4t245-sn74avc4t245rsvr/5344374?tisearch=e2e-sitesearch&keymatch=SN74AVC4T245RSVR#5344374

https://e2e.ti.com/support/logic-group/logic/f/logic-forum/981318/sn74avc4t245-minimum-voltage-requirement-at-1-2---10-vcca?tisearch=e2e-sitesearch&keymatch=SN74AVC4T245%2525252525201.2V#

Best Regards,

ttd