SN74LV4T125: Schematic of SN74LV4T125
Part Number: CD4504B
I would like to find the level shift IC which could let voltage from 3.3V to 4V-10V or 4V-10V to 3.3V (Uni- directional)
I find cd4504b may meet my requirement, but i have not used this part before. Actually it mentioned TTL ; CMOS transmission.
I'm not sure what is the CD parts limitation and difference between CD parts and SN parts.
That device can work (I'm assuming you are doing CMOS to CMOS so you can operate the select pin accordingly), but the CD40109B may be a better option. The CD4000 family is our high voltage family and the 'CD' indicates that it was acquired from Harris.
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In reply to Dylan Hubbard:
Thank you for your comments. Do we have reference circuit of CD40109B?
In reply to Roy Chou1:
Not for this specific device, but it's a simple level translation device. Connect Vcc, Vdd, and GND and make sure to terminate any inputs that won't be used.
Excuse me, could you let me know the meaning of "make sure to terminate any inputs" connect to GND or floating?
Any unused channels of a CMOS device should be terminated at GND or VCC. We have an FAQ that explains the effects of leaving an input floating: [FAQ] How does a slow or floating input affect a CMOS device?
In reply to Emrys Maier:
Thank you. Could you let me know the Band Width of this part?
At 4 V operation, I probably wouldn't try to push it past ~5 MHz. You can probably get more speed out of the device, but you might run into trouble across process, voltage, and temperature variations.
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