TMUX1574: drop-in replacement to SN74CB3Q3257

Fred Cheng

Expert 5720 points

Part Number: TMUX1574
Other Parts Discussed in Thread: SN74CB3Q3257

Hi team,

although TMUX1574 and SN74CB3Q are p2p.

but there's internal pull down resistor at TMUX1574,

does this change anything? or still drop-in replacement?

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 316920 points

The worst-case leakage current of the SN74CB3Q3257's control inputs is 1 µA; of the TMUX1574, 2 µA. Unless you are using an extremely weak pull-up resistor with the CB3Q, this makes no difference in practice.

0 Fred Cheng over 2 years ago in reply to Clemens Ladisch

TI__Expert 5720 points

I didn't see any external pull resistor on my customer's schematic,

so I assume it's ok , right?

+1 Rami Mooti1 over 2 years ago in reply to Fred Cheng

TI__Mastermind 35528 points

You're correct here. No issues dropping the 1574 in here.

Thanks,
Rami

Switches & multiplexers

Switches & multiplexers forum

TMUX1574: drop-in replacement to SN74CB3Q3257