looking for a bidirectional buffer to support hot plug application

Oliver Ou

Intellectual 2845 points

Other Parts Discussed in Thread: SN74CB3Q3245

Hi,

Customer is looking for a bidirectional buffer to support hot plug in IPC buffer, signal frequency 33MHz.

Could you suggest a suitable part?

Thanks a lot.

Oliver Ou

over 6 years ago

0 Clemens Ladisch over 6 years ago

Guru 317090 points

What does "IPC" refer to in this context? What are the characteristics of the signal (voltages, required drive strength, automatic direction sensing, number of lines)?

0 Miguel Robertson over 6 years ago in reply to Clemens Ladisch

TI__Guru 62920 points

Hi Oliver,

I am wondering the same things as Clemens - do you have any further info you could share to clarify what is needed?

Thanks,
Max

0 Oliver Ou over 6 years ago in reply to Miguel Robertson

TI__Intellectual 2845 points

Hi,

From customer's feedback, the spec is: 3.3V VDD, 33Mhz frequency, bi-direction, single end, 8~10 channels.

multi chips are accepted too is no 8~10 channels in one chip.

SN74CD3Q3245 can meet this requirement or not?

Thanks,

Oliver Ou

0 Clemens Ladisch over 6 years ago in reply to Oliver Ou

Guru 317090 points

Strictly speaking, the word "buffer" would imply that the device actively drives its own outputs; the SN74CB3Q3245, however, has passive switches. If the only purpose of the device is to disconnect the bus, then this is no problem.

The SN74CB3Q3245 is OK, as are other analog switches. Also see the Digital Bus Switch Selection Guide (SCDB006).

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looking for a bidirectional buffer to support hot plug application