SN74AXCH8T245: SN74AXCH8T245RHLR Max. IO toggling speed

Blessing Selvakumar

Part Number: SN74AXCH8T245
Other Parts Discussed in Thread: SN74LVC2T45

Tool/software:

Dear team,

We are using SN74AXCH8T245RHLR in our design,We need to know the maximum IO toggling speed of the mentioned chip.Kindly support.

Thanks & Regards,
Blessing Selvakumar,
Hardware Design Engineer,
Data Patterns (India) Ltd.,
Chennai.

1 day ago

0 Clemens Ladisch 1 day ago

Guru 267140 points

The propagation delay is a safe estimate of the minimum pulse width, under the specified test conditions. The actual maximum speed might be higher (the datasheet mentions 380 Mbps for 1.8 V to 3.3 V).

The rise/fall time depends on the capacitive load (see [FAQ] What is the output transition rate for a logic device?). You might need to measure with your actual board.

0 Blessing Selvakumar 1 day ago in reply to Clemens Ladisch

Prodigy 50 points

Hi Clemens,

Thanks for your response,can I expect the same speed for SN74LVC8T245RHLR for 3.3V to 1.8V translation? or if varies kindly share the toggling speed of the mentioned chip

Thanks and Regards,
Blessing Selvakumar,
Hardware Design Engineer,
Data Patterns (India) Ltd.,
Chennai

0 Michael Ikwuyum 1 day ago in reply to Blessing Selvakumar

TI__Mastermind 27810 points

Hi Blessing,

You may also use SN74LVC2T45's data sheet as a reference, indicating 75 Mbps. Furthernote that LVC is more optimized for higher voltages instead, thanks.

Best Regards,

Michael.

Logic

Logic forum

SN74AXCH8T245: SN74AXCH8T245RHLR Max. IO toggling speed