Questions tagged [datasheet]
Datasheets are the primary documentation about components, describing their functionality and electrical properties.
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Untraceable datasheets of DC-DC buck converter (5 pin SOT23-5 IC) used in TP-LINK WiFi Router TL-WR720N V2
I am trying to search the datasheets of DC-DC buck converters used in the TP-LINK WiFi Router TL-WR720N V2.
LD5AX and
TR5XF
A couple of years ago, an above mentioned router, belonging to one of my ...
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Designing a circuit with a LM386 amplifier
I'm designing a circuit an I want to use the LM386 audio amplifier. Before designing, I'm going through the whole datasheet, I've seen that VI is from -0.4V to 0.4V :
Here is the first typical ...
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What's the meaning of RF power consumption given in mA, not in mAh?
I'm trying to understand the power consumption of an esp32 with BLE enabled and transmitting. Its datasheet provides the following table:
As you can see, it provides the power consumtions in mA. I ...
user222967
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DDR_XCK register in atmega328
Page 166 of datasheet of atmega328 shows the use of a register called DDR_XCK.
...
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How to choose a MOSFET based on maximum forward voltage
I have a 5V DC input to a fixed 5V to 3.3V LDO (LM3940) that I want to add reverse polarity protection in front of via a P-channel MOSFET.
What I am struggling to determine is how to analyze/choose a ...
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AD711 Noise Figures
I'm looking at the datasheet for the AD711. Why are there several different values for the input voltage noise given without any information to distinguish between them?
Datasheet: AD711
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Ripple rejection of 7805 voltage regulator
In the last row of the picture of the data sheet of 7805 voltage regulator, the ripple reduction ranges from 62 to 78 dB for the voltage range of 8 to 18 volts at 120 Hz.
Is it the range of input ...
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Can FT232HL VCCIO be powered from external source?
I would like to power the FT232HL from VBUS, but prevent it from supplying power through (UART) IOs to connected microcontroller. Microcontroller is powered from an external +3V3 source, which might ...
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Using a logic driver with a 50 ohm load
I have a load which is an external trigger input of the Highland Technology T130 single-channel picosecond EOM driver (technical manual - Google Drive link) which is 50 ohm and it requires a pulse ...
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Is propagation delay in coax cable a function of signal frequency?
For this coax cable, the propagation delay is given as a single parameter in 1.54 ns/ft as follows:
But isn't the propagation delay function of signal frequency?
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Finding alternate IC for 74HC245D
I have built a PCB using IC 74HC245D for levelshifting 3.3v signal to 5v signal for RGB LEDs. But by mistake, I used TSSOP-20 footprint in my PCB, and while ordering parts I ordered a SOIC package so ...
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Dali thermal DLC384 datasheet
I have ordered this chip DLC384 from Dali-thermal some time ago but unfortunately never received the electric pin-outs and usage description/interface description.
I mailed them multiple times over ...
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Datasheet LM7812
I'm confused: does the LM7812 require at least 500 mA or not to output 12 volts at 1 amp? Help me understand what this part of the datasheet means:
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How to interpret input common-mode voltage vs output voltage in INA823 Datasheet
First, a similar question was asked before Understanding common mode vs output voltage graph for instrumentation amps, however, I failed to understand it with regards to my use case and need more ...
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How can I find the datasheet of this 7-segment display?
This is a 1-digit 56.80 mm 7-segment display. I don't know if it's common anode or common cathode. I got this because that was the only available option at that moment.
This is the description of the ...
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Datasheet of ECS-2200B 10 MHz oscillator
I have problem finding information about this oscillator. I can't find what is the activation time when the control pin 1 is put HIGH. In the datasheet the only thing I found is start up time which is ...
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UC3842 \$V_{VFB}\$ max rating Vs absolute max rating
I am having a confusion regarding the DC characteristics absolute max rating and the max rating. The absolute max rating tells that beyond this the IC will not work and will be damaged.
I am confused ...
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Best way to work out how to use this LCD screen without datasheet
I found this LCD screen in an electrical waste bin, however after googling the board number and the controller on it I haven't been able to find any results. I can't for the life of me work out whats ...
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Interpreting the markings on transistors - convention to differentiate/identify part numbers vs manufacturing details vs. other data?
General line of questioning:
When looking at transistor, are there any standards/conventions of how they are labeled? Is it manufacturer specific - and if so, how would I identify that mfr's ...
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What is a color bars vector diagram?
I'm reading the datasheet of the "AT7456E". This component is an OSD (so-called "on screen display") used on the flight controller of my drone project.
In the datasheet there was ...
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Making a DE-15 (HD-15) connector footprint from datasheet
I am trying to make a PCB footprint of a edge-mounted DE-15 D-sub connector (a.k.a. HD-15, DE15, HD15), however the datasheet does not seem to provide enough metrics to make it unambiguous.
Here is ...
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How do I use the TPS5403 DC-DC buck to get 3.3V output from a 5-15V input?
I am trying to use the TPS5403 (datasheet) buck converter to power an ESP32 at 3.3V from an input of 5-15V, however, I can't find enough resources online to be sure in my design.
Below, I have ...
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Half-Bridge with N-channel Mosfets and IR2101
I am building a half-bridge with IR2101 as half bridge driver and I am being confused by something in the datasheet of IR2101. My main supply voltage will be 40V. The VCC of the IR2101 will be 15V ...
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TMS3615NS Datasheet
I've got a tMS3615NS which should be an octave multiple tone synthesizer (dip28), I've found only a datasheet online, but the pinout is missing.
Has anyone a copy about this component or knows a ...
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XLamp XHP70.2 LEDs Configuration issue
I was reading the XHP70 LEDs datasheet where there were two configurations given, 6V and 12V. I am having a confusion whether a single led is rated 6V/12V or a combination of LEDs are rated this way ...
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Understanding Solenoid Datasheet
I have a 3/4" tubular pull-type solenoid from Magnetic Sensor Systems, model number S-15-75-24. The datasheet can be found here: http://www.magneticsensorsystems.com/solenoid/tubular/s-15-75.asp
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D-type flip flop current rating
I built a circuit where I use a D-type flip flop (74LS74A) to directly drive an optocoupler (LTV-817) and the circuit seems to work fine.
I measured the output current from the Dff (Q) to the opto ...
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Molex PicoBlade current rating confusing
It seems there are confliction in specifications of PicoBlade for current rating.
From the MolexPicoBlade Connector System datasheet,
I assume that the current values in table is per circuit value.
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Should I consider maximum power or typical power when I select LED power?
I have datasheet:
https://pdf1.alldatasheet.com/datasheet-pdf/view/635258/OPTOSUPPLY/OSI3XNE3E1E.html
There is maximum power which is 2 W and typical which is maybe 1.19.
So the LED is 2 W or ...
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I need some help to identify this component
I require assistance in locating this component, which bears the designation EK 67, as evident in the accompanying image. The challenge lies in my inability to procure its datasheet, thereby impeding ...
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How to read the SN74LVC245A datasheet
I'm looking for help with how to read datasheets. For the below application, specifically what in the datasheets is it that would help me choose between these components? (datasheet for SN74LVC245A.)
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Standard Thick Film Chip Resistor datasheets not mentioning storage temperature
I am looking for alternatives for a 120ohm 5% 1206 standard thick film chip resistor. I have noticed some MFRs (KOA speer, Vishay, Bourns) do not always detail the storage temperature in their ...
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ATmega328P bootloader
I have read the complete datasheet of the ATmega328P but have a few confusions regarding the chip. In the datasheet in a section I have found that there is no specific bootloader section and also the ...
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Why IO12 is connected to 3V3 in ESP32-PICO-DevKit schematic?
Here, IO12 is connected to 3V3.
https://dl.espressif.com/dl/schematics/SCH_ESP32-PICO-DEVKITM-2_V1_0_20200812A.pdf
The only clue about this that I found is below.
https://docs.espressif.com/projects/...
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avr debugWIRE On chip debug system
I am new into avr and am working on atmega328p. I am not able to understand the avr debugwire system. What is this and how it works. I am seen the datasheet but am not getting a good clear ...
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A conceptual question about maximum diode reverse voltage
To illustrate my question I will use an example scenario to make it clear. Imagine you have a diode where its datasheet shows maximum diode reverse voltage as 5 V, imagine it is wired as follows:
My ...
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How I can get the watt from this datasheet? There is only current and voltage
I need the method that I can do to get the watt
It says 250mW but how? I need that because I need to get the minimum voltage and also to get the current in some cases.
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FIFO buffer in the ATmega328P
I have a problem in understanding the working of the FIFO buffer. The diagram of the USART in the datasheet does not mention the FIFO buffer, and it just gives the UDR register which acts as a ...
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Overriding signals and alternate functions
I am new into microcontroller and had started going into the Atmega328p datasheet. I had a confusion regarding the Overriding signals and overriding functions. As far as I understood the overriding ...
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I need datasheet for a 4 pin optocoupler marked 817C E172H
It is used in an automotive vehicle power conversion board. I am trying to service the board but I don't know the exact manufacturer. I have added the IC image. Its dimensions are 6.7mm X 4.7mm X 3....
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Identification of two 3+1 pin SMD components - DC P39 and BD P44
I have these two SMD components, one with the nomenclature DC P39 and the other BD P44. I would like you to help me identify each of them, what they are, what they are used for, and provide the ...
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I need a datasheet for an 8-pin IC marked 206 5128A3GX
I want to know what this IC is and its manufacturer name. It will be useful if you also let me know how you found the datsheet.
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SOIC-8 package in KiCAD
I want to incorporate a chip in my design.
This is the datasheet:
https://datasheet.lcsc.com/lcsc/1809251831_Diodes-Incorporated-AZ34063UMTR-G1_C99659.pdf
It is an 8 pin SOIC package.
When I try to ...
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What is '22μF * 2' in the datasheet?
I am reading this datasheet.
And in the first page, there is 22μF * 2.
I can not find capacitor parts of 44μF so I am afraid I ...
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Is this setup for measuring MOSFET RDS_On correct?
I ordered some MOSFETS from AliExpress and I think I've been duped.
The diagram below shows my setup:
If I'm not mistake, this means that the R_DS(On) of this N-channel MOSFET is 0.042/0.62 = 67 ...
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AQV255GS Opto-MOSFET datasheet confusion - what's the actual max frequency?
On page 1, abs max ratings, it mentions operating conditions such as: "f = 100 Hz, Duty factor = 0.1%"
Which there, is only to specify the conditions for some other boundary, but one might ...
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How to understand the induction motor datasheet?
I have got the below given datasheet for a three phase induction motor
and I have been attempting to understand its content. For me only the last column named continuous point A is clear - it ...
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How to use the equivalent circuit of an induction motor?
I have met a data sheet for a three phase induction motor intended for the traction
applications. The data sheet contains below given table
I have chosen the column operating point - continuous point ...
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Why do datasheets sometimes use fractions of a microfarad or tens of thousands of picofarads instead of nanofarads? [duplicate]
This datasheet for a mini dev board, as an example, denotes eg C1 as 0.1µF, and C6 as 10000pF, instead of 100nF and 10nF, respectively. This is something I've noticed in several datasheets at various ...
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How to understand the noise specifications of amplifier?
LT6370 Instrumentation amplifier has specifications as below.
How should I understand this specification? Why only 0.1 to 10 Hz is specified, why not high frequency values?
Thanks in advance.
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