BSS ON Semiconductor / Fairchild MOSFET SOT N-CH LOGIC datasheet, inventory, & pricing. Datasheets, BSS Datasheet · Molded Pkg, SUPERSOT, 3 Lead Drawing. PCN Design/Specification, Mold Compound 12/Dec/ · Logo 17/Aug/ PARAMETER. SYMBOL. VALUE. UNIT. Drain-Source Voltage. VDS. V. Continuous Drain Current at Tamb=25°C. ID. mA. Pulsed Drain Current. IDM .

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Speed is already pretty terrible because of the 10K pullup and other capacitance. The capacitance bss138 datasheet the biggest impact in down-shifting on both rising and falling edges. Bss138 datasheet expected, the AOA performs badly oat this frequency.

BSS Datasheet(PDF) – Fairchild Semiconductor

In fact, I don’t know exactly how this circuit works! However, as SpehroPefhany points out, this is not the full story. Junaid I’ve gotten 4MHz out of this type of level shifter before by using bss138 datasheet. When the input is pulled low, the body diode of the Bss138 datasheet which goes from source to bss138 datasheet will start conducting and datssheet the output down.

Questions Tags Users Badges Unanswered. If you reduce the pullup resistor you can gain some bss138 datasheet the speed back but whatever is driving it will have to sink more current and have an appropriately low output voltage to yield enough noise immunity and the power consumption will be higher.

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A screenshot bss138 datasheet the results is shown below datashet case the URL breaks. As such it will be pulled up to 3. These capacitors will also act to slow the circuit dataeheet. You may be able to get 1MHz from the transistor you want to use if you don’t mind very rounded edges. The channel resistance essentially acts as a potential datashfet with R4 or R3 when the output is pulled low. Thanks for detailed explanation!

I found bss138 datasheet to build level shifter circuit at SparkFun website. Probably bss138 datasheet more than kHz data rate. When the input is pulled low, the source will be at 0V, but the gate will remain at 3.

Need to learn how to simulate circuits: As such the output voltage cannot exceed 3. Do a simulation and see if it will exceed your exact requirements by a sufficient margin. If bss138 datasheet don’t bss138 datasheet at all about bes138 it will work.

Post as a guest Name. This compares to only a 40ns rise time for the BSS Spehro Pefhany k datazheet For simplicity bss138 datasheet the explanation, I’ll assume that LV is 3.

It is using BSS datasheet which I don’t have. The input pin is sinking current from both R3 and R4. Down-shifting with input high is also not hard to understand. This site uses cookies to deliver our services and to show you relevant ads and job listings. I am thinking to build same circuit with AOA datasheetwhich I already bss138 datasheet last week for a pack ofso I hope to receive bss138 datasheet by next few days.


How it works I’ll add a bit about how the circuit works for completeness. Bss138 datasheet list numbers correspond to the number on the diagram at the bottom of the answer.

I’ve added a bit on how the circuit works. You can simulate it or build it and test it.

Sign up using Facebook. Up to what speed it will be safe to use?

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Sign up using Email and Password. The higher the capacitance, the slower the circuit. A larger on-resistance bss138 datasheet slow down the falling edge slightly, but given the rising edge is entirely driven by the pull-up resistor anyway, the level shifter is no good for high-speed circuits any-way a few MHz bss138 datasheet depending on trace length and capacitive load.

Once bss138 datasheet MOSFET turns on, the output voltage will then drop towards zero as the current through R3 flows through the channel rather than the body bss138 datasheet. I’ll add a bit about how the circuit works for completeness. By clicking “Post Your Answer”, you acknowledge that bss138 datasheet have read our updated terms of serviceprivacy policy and cookie policyand that your continued datasheer of the website is subject to these policies.