Questions tagged [datasheet]

Datasheets are the primary documentation about components, describing their functionality and electrical properties.

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High side switch with inductive loads

Seeking help with the following datasheet. Section 9.4.3 Didn't understand the above calculations. It states that for inductive load energy dissipation, the energy from the source and the load is ...
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Electrical characteristics for high-side switch

Ref What is the role of KCL Previously, when I encountered this parameter, it was used in calculating the value of RCL, but it only had a single value eg say, 2500. Could you explain the role of KCL ...
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JFET datasheet theoretical vs practical aspects

I am re-learning electronics basics (starting with the JFET). After going through several JFET datasheets (2N548x, 2N545x, J11x, J310 etc) I found it hard to map the theoretical aspects to the the ...
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Need help with current sensing parameter

In the above, I understood the term current sensing. Just to confirm as to what the percentages mean, are they the error or range of estimation for the sensed current at load? Ref
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AD7779 ADC Pin Mode Problem

I am trying to configure three seperate AD7779's to output continuously at pin mode operation (by using DOUTX pins, not SPI). However, even the decimation rate of 4095 is mentioned at the datasheet at ...
Tombeki's user avatar
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Need help TPS1H200 High Side switch

TPS1H200A-Q1 How is does the FAULT pin work? (from what I gathered when I(lim) threshold it hit, fault is reported as FAULT = LOW. During normal operation FAULT = HIGH (no issues) How / where is the ...
Harkirat's user avatar
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ULN2003 low-side switch electrical characteristics

ULN2003A So I'm currently exploring low side switches. I started off with an NMOS transistor array IC (Open drain), to develop a better understanding I've tried to understand the Darlington transistor ...
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Low-side switch TPL7407LA-Q1 [closed]

I have some questions regarding the TPL7407LA-Q1 low-side switch. As far as I know, this IC is typically coupled with GPIO pins on a microcontroller, so supply voltages are limited. On the product ...
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I(VOUT) vs V(VIN-VOUT) for TPS25924

TPS25924 Assuming I(vout) is current out of the OUT pin of the IC. The test parameters say the V(IN) is 12V for the given characteristics. According to the abs max ratings specified in the datasheet ...
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What are the raw SPI bits to read/write registers of MCP23S17 GPIO expanders

I'm making a library for my own MCP23S17 GPIO expander because no one library has everything I need... My main problem now is: what are the raw bits I need to send to SPI.transfer() inorder to read/...
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Clarification for V(ref) for TPS212x

I’m having a hard time figuring out the manual switching capabilities of the TPS212x Power MUX. As per the datasheet, it supports automatic, manual as well as both i.e. automatic but can be overridden ...
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How does the OV pin protect against overvoltage?

This is the first time I've come across such pins on an IC. With a quick search, they are overvoltage supervisor pins hence to protect against overvoltage. I was studying a power MUX TPS212x. The ...
Harkirat's user avatar
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Having trouble understanding sink current values for an LM74700-Q1 ideal diode controller

This is my first time referring/understanding a datasheet. As I understand it from a quick search, a sink current is the current (negative) which flows into a port, while source current is the ...
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Accurately measuring capacitor charge using a microcontroller

I am working on a circuit that involves charging a capacitor and measuring the accumulated charge with a microcontroller. From my initial tests, I have run across these challenges: The capacitor once ...
CaptainCodeman's user avatar
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Is AM29F040B CMOS EEPROM TTL Compatible

I can't really make any sense of the datasheet regarding whether the AM29F040B EEPROM can be used with TTL inputs, so wanted to ask on here. It is a 5V CMOS IC, but there are mentions in the datasheet ...
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How to know the resistance of the typical drive circuit on the TCD1103GFG datasheet

I'm currently doing some work with TCD1103GFG. I want to know what's the resistance of the three resistors shown below. If possible, I will interface this linear CCD with an Arduino. Can someone ...
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Conflicting data in ATmega32u2 datasheet: PLLCSR PLL Control and Status Register

I'm trying to make a simple USB breakout board based on the ATmega32u2 and I've come across some conflicting information in the datasheet. Can somebody with experience confirm or deny what is said in ...
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LEDs circuit control via PWM from PIC12f675: calculate base resistor for an N-channel MOSFET

I want to "develop" a project with some bi-color LEDs (OSRAM LSY-T676.) I have made (after some tutorials) my own component because it was not included in Proteus 8 library. Source which is ...
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How to find datasheet or pinout for this DC-DC IC? OB2560NAP

I have this power board on a WiFi extender and I'm trying to find the datasheet for this IC. I believe this is the switching IC that generates the low 3.3V voltage from the high ~220V input voltage ...
QuickishFM's user avatar
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What is pulse-by-pulse shutdown and latching PWM to prevent multiple pulses?

I was looking into the datasheet of SG3525AN, and its features include pulse-by-pulse shutdown and latching PWM to prevent multiple pulses. What does pulse-by-pulse shutdown and latching PWM to ...
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Transistor choice for solenoid actuation

I'm a software guy trying to do a small electronics prototype project and need help with selecting a transistor. I know this must sound like a very basic question here, but this looks like a great ...
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4 votes
2 answers
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Linear regulator thermal information missing in datasheet

I'm considering to use UA78M33CKVURG3 in my design, so as with any linear regulator I have to make sure it will be able to handle the current draw in the worst case scenario. To calculate what the ...
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DC motor datasheet: dimensions

I have a PC280LG-302 DC motor, and I need to know the shaft length for this. In the documentation they just wrote it as DIM."A" and total length as DIM."B". Can anybody understand ...
visahl's user avatar
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Datasheet XR2981 [closed]

Does somebody know where the datasheet of this chip XR2981 is? Available also on AliExpress.
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Electrical Characteristics of Toshiba Mosfets

I have been Searching for power mosfets for designing an inverter. One crucial parameter I was looking for is the Rds_on relationship with junction temperature. Other manufacturers (infineon, Irf, ST) ...
Farvez Farook's user avatar
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1 answer
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Is there any part equivalent to LTC2326-16 or some way to do it?

It is a very specific chip but it is not available in my region, from how I see the diagrams I don't think I can make another circuit, it is too complex but I see that sometimes they use several to ...
Juan Carlos Dominguez Solis's user avatar
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How to know part number of an unknown chip from IC marking? [duplicate]

I am trying to get information from top mark of an IC. I couldn't find it from this article. How do I identify SMD components? (or how do I identify any component) Its manufacturers are JRC. Which ...
Andrey kobalkobl's user avatar
2 votes
0 answers
64 views

Can anyone help me find this IC SZ9KH?

I tried looking for datasheet for SZ9KH but can't find anything. I encountered this IC on a board that needed to be amplified. Mostly i want to know how does the amplification works? Is it an op-amp ...
Ali Tavoosi's user avatar
1 vote
2 answers
329 views

Maximum gate current for IRF3205?

I'm a bit lost in the datasheet of the IRF3205 N-channel MOSFET: where should I look to find the maximum acceptable gate current? Is it I = 10/4.5 as determined by the conditions V_GS=10V, G=4.5Ohm in ...
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74HC4067: current limits

I know how the 74HC4067 works, but I have difficulty understanding its limits when the Enable pin is high, meaning all outputs are inactive. In this case the acceptable voltage limit should be between ...
hervema's user avatar
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4 votes
2 answers
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I need help understanding a Chinese datasheet on an IR remote IC

I have a remote for a sound system sub woofer (a quite expensive, set I would say) with 16 buttons and half of them suddenly stopped working. A broken remote is not usually the end all, but the people ...
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Voltage Regulator: MCP1700-3302E (TO-92) current output too low compared to datasheet circuit

I'm currently using a pack of MCP1700-3302Es that I purchased online that I plan to use for a project. The project intends to use a 3.7V Lithium Polymer battery; I'm currently testing with an input ...
TCar's user avatar
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Datasheet help -- max pulse current for LED

I am looking at this infrared LED: https://www.vishay.com/docs/84240/vsly5940.pdf It seems to indicate a "Forward Current" of 100ma, a "Peak Forward Current" of 200ma, and a "...
CaptainCodeman's user avatar
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74hc595 with not connected pin

I've bought some 74HC595 in SOP-16 without directly looking at their datasheet and now that I have looked at it for my project I saw that it is marked that the OE and MR pin are not connected. I ...
rappepi's user avatar
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2 answers
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Web information

I have three big boxes of transformers. I found some that go to computers, some games and toys. A lot belong to tools, mostly drill/driver and of those the most are Drill Master drills and Sears. Is ...
Patrick 's user avatar
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VSD to ISD graph of MOSFET

I want to compare two graphs provided in datasheets of two MOSFETs. Could anyone please explain what we can conclude if we compare both graphs? Which device has the better forward voltage drop of the ...
Alison's user avatar
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3 answers
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Gyroscope noise specifications from datasheet

I am comparing the gyroscopes of two IMU sensors, the BMI088 and BMI270. BMI088 says this: BMI270 says this: I don't understand how to compare these numbers. Does the 0.014 get multiplied by the 0.1?...
CaptainCodeman's user avatar
2 votes
2 answers
117 views

What is the maximum output current for this op-amp (OPA4227)?

Usually in an op-amp datasheet I see that the op-amp output current's min, max, and typical values are stated. But for the OPA4227 op-amp one finds two sections about currents: Signal input terminals ...
GNZ's user avatar
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1 vote
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dv/dt capability comparison of two MOSFETs

I am doing a datasheet comparison of the AUIRFP4568 and the IXTH150N15X4 MOSFETs. The MOSFET is for a three phase inverter working as MCU (Motor Control Unit) to control a PMSM motor, and will be ...
Alison's user avatar
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2 votes
1 answer
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How do I connect the CS pin on an ILPS22QS sensor to enable I2C?

Should I connect the CS pin on an ILPS22QS sensor to enable I2C? In order to enable the I2C interface, on page 25 of the datasheet it says that the CS pin of SPI must be tied high by connecting it to ...
Idix's user avatar
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How can I get these pins description?

How can I get these pins' descriptions? I researched on the internet a lot but I couldn't find anything. Here is the datasheet PDF download link and website. I specially need camera control pins. I ...
Aiakun's user avatar
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1 vote
3 answers
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What is the difference between supply voltage (total bipolar supplies) and total supply voltage in an op-amp datasheet?

There is something that I do not understand from this datasheet. Here are the "Absolute Maximum Ratings": So suppose it is supplied by a 15 V and a -5 V. It means Vs = 15V - (-5V) = 20 V ...
Jess's user avatar
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3 votes
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Help with heated differential pair design

So I'm currently designing a VCO and need an exponential voltage-controlled current source. I'm following the basic idea of biasing one side of an NPN differential pair. However, I've seen that for ...
Gabriel Golfetti's user avatar
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2 answers
111 views

What is this IC marked 4PC?

I can't find anything about this SMD IC marked 4PC.
khalid.h's user avatar
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1 answer
3k views

A "B" inside a triangle symbol in connector drawing datasheet

I was checking a drawing datasheet, and I noticed this symbol. A B inside a triangle. As seen on the screenshot, the symbol is on the side of the table that indicates the pinout. I can't find out ...
NicoCaldo's user avatar
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3 votes
1 answer
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What IC is this? SMD marked AARY

What is this IC? Where can I find a datsheet for it?
khalid.h's user avatar
4 votes
1 answer
285 views

Turning off a MOSFET

What is the advantage of turning off a MOSFET on negative gate to source biased voltage of 5V instead of 0V? I saw that it is a very common phenomenon in SiC MOSFET as their datasheet always specifies ...
Alison's user avatar
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2 votes
1 answer
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What is the point of the connection to ground, with resistor, on the inverting output of this MEMS microphone?

For reference, the datasheet I am referring to in this post is given by this. I was wondering whether anyone could clarify the point of connecting the inverting channel of the succeeding stages of the ...
Callous Derpallous's user avatar
1 vote
1 answer
100 views

ATtiny861 SPI via USI Port A or Port B?

I'm struggling to understand the ATtiny861 datasheet with respect to the pins available for SPI communication. My goal is to configure my ATtiny861 as a SPI peripheral and use my USBtinyISP programmer ...
dvogel's user avatar
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2 votes
2 answers
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How to determine which MCU pins support hardware PWM from datasheet?

Most of the time i'm used to finding a pin-out with a "squiggly" mark next to the pins or some other indication. But in this usb controller there are quite a lot of GPIO pins (almost 60), ...
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