SN74CBT16209A: Can mux part be used with non recommended supply range

Abhishek

Part Number: SN74CBT16233
Other Parts Discussed in Thread: SN74CBTLV16292, TS3A27518E, TMUX1574

Hi,

In the datasheet, the recommended VCC is between 4.75 V to 5.25 V. But the actual range shown is –0.5 V to 7 V. Can I use SN74CBT16233 with 2.5V supply?

Thank you,

Abhi

over 3 years ago

0 Clemens Ladisch over 3 years ago

Guru 249150 points

No.

When you exceed the absolute maximum ratings, the device might get damaged.
When you exceed the recommended operating conditions, the device might not work.

You must use a device rated for 2.5 V. The largest are SN74CBTLV16292 with 12 channels, or TS3A27518E with 6.

0 Abhishek over 3 years ago in reply to Clemens Ladisch

Prodigy 130 points

Hi,

The supply voltage is 2.5V which is in the Supply voltage range, VCC (-0.5 to 7V). But datasheet is recommendation is from 4.75V to 5.25.

My signals voltage is 2.5V. Also, I am looking for either a 14-bit or 16-bit mux.

0 Clemens Ladisch over 3 years ago in reply to Abhishek

Guru 249150 points

The SN74CBT16233 will not run with a 2.5 V supply.

But you can use 2.5 V signals with a mux that is supplied with 5 V.

0 Sandesh Rawool over 3 years ago

TI__Intellectual 2694 points

HI Abhishek,

Thank you for reaching out.

Just to clarify, the recommended operating conditions table is the min/max operating conditions for supply voltage where the device will operate as intended. The Abs max table is mainly based on the component physics and layout to help customers understand where the devices will get damaged if exposed.

For your use case, I would like to recommend our newer TMUX1574 device. This is a 4ch, 2:1 device and even with 4x on the board to meet the 16channel requirement you will still be within the area that the single SN74CBT16233 uses. This device will meet your supply and signal voltage requirements.

Even with 50% area addition due to soldering spacings for 4x chips, the total area will be ~87mm2.

Device	Configuration	PKG	Qty	L(mm)	W(mm)	Area (mm2)
TMUX1574	4ch, 2:1	DYY	4	4.3	3.36	58
SN74CBT16233	16ch, 2:1	DCG	1	14.1	8.3	117
SN74CBT16233	16ch, 2:1	DL	1	18.54	10.67	198

Hope this solves your problem. If not, please let us know how we can help further.

Thank you,

Regards,
Sandesh

0 Abhishek over 3 years ago in reply to Clemens Ladisch

Prodigy 130 points

Hi Clemens Ladisch,

Thank you for your reply.

0 Abhishek over 3 years ago in reply to Sandesh Rawool

Prodigy 130 points

Hi Sandesh Rawool,

Thank you for your reply.

I will go ahead with SN74CBT16233. I have not found any pcb layout related information in datasheet. It will be very helpful if there is any EVB document or application note on layout recommendation. please provide the document or link if any.

Thank you,

Abhi

0 Sandesh Rawool over 3 years ago in reply to Abhishek

TI__Intellectual 2694 points

Hi Abhishek,

Please make sure that you are using a 5V supply rail with the SN74CBT16233.

Below are couple of good app notes that we recommended for layout designs. You can also refer to the datasheet: section 11 of one of our latest switch for additional layout guidelines (TMUX1574).

https://www.ti.com/lit/an/spraar7h/spraar7h.pdf

https://www.ti.com/lit/an/slla414/slla414.pdf

Thank you,

Regards,

Sandesh

0 Abhishek over 3 years ago in reply to Sandesh Rawool

Prodigy 130 points

Hi Sandesh,

In my case the signal voltage level is 2.5V

I can use SN74CBT16233 IC for signal voltages @2.5V with VCC supply of 5V?

Please confirm.

0 Sandesh Rawool over 3 years ago in reply to Abhishek

TI__Intellectual 2694 points

HI Abhishek,

Thank you for confirming and yes this use case is supported.

The signal voltages supported are 0V to VCC so you are good to use SN74CBT16233 for a 2.5V signal with 5V supply.

Thank you,

Regards,
Sandesh

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SN74CBT16209A: Can mux part be used with non recommended supply range