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

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Unusual Lemo PCB sockets (male PCB contacts, 2-pin 5B, etc)

I am trying to construct a comprehensive Kicad library of Lemo connectors. While working through the "normal" datasheet (unipole_multipole.pdf), I found several combinations appear to be missing. For ...
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1answer
33 views

What is bus hold LOW or HIGH current refer to in the data sheet?

What is bus hold LOW or HIGH current refer to in the data sheet? (Specifically looking at this data sheet for a translator buffer): http://www.nxp.com/documents/data_sheet/74LVC_LVCH2T45.pdf
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1answer
59 views

2N7002 Continuous drain current?

I'm currently looking for some MOSFET's to do some RGB LED lighting with using PWM. I found the 2N7002 in SOT-23 packaging (datasheet). According to the datasheet the MOSFET can handle a continuous ...
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1answer
39 views

Using PS2501A-1-A Optocoupler. Need help understanding datasheet

I'm experimenting with circuits to trigger my camera shutter and camera flash. My plan is to build a 2-stage trigger for high speed photography that triggers the camera a fraction of a second before ...
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3answers
83 views

Alien circuit component

I am modeling chip ‍MC14538 in PSPICE by building its internal circuit from the datasheet. I, however, can't figure out what ...
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1answer
81 views

Transistor letting 12Volts through collector->emmiter withouit being damaged

I have made a simple digital amplifier using 2N4401 Philips switching transistor. simulate this circuit – Schematic created using CircuitLab I have tested this amplifier on 5 VDC and it ...
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2answers
40 views

Need help finding datasheet for Mitsubishi Electric AA11SB6C-ADFD TFT

Searching datasheet for Mitsubishi Electric AA11SB6C-ADFD LCD display. This LCD is discontinued product, no information on official site. Already tried sites like datasheetarchive, alldatasheet. Still ...
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0answers
47 views

Can't find Broadcom BCM4329 datasheet

I need to find information about my phone energy consumption and I can't find a proper datasheet about the BCM4329 chipset. Does someone have it? I'd like to create a power profile for PowerTutor in ...
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5answers
186 views

Which parameters in datasheet give information about a BJT's step response quality?

I did a test with randomly chosen 12 NPN BJTs. I applied a clock pulse to each of them and observed their collector voltages. Some of them showed very low rise time, while some responded terribly ...
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0answers
84 views

Interpreting Data Sheets (“Typical Applications”)

I've recently been researching various transceivers, but I run into trouble as soon as I get to the "typical applications" section of the data sheet. With the Si4464 for instance, the example ...
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2answers
76 views

Regarding miniature solar panels

I am a bit confused. I want to buy a miniature solar panel like this. The problem is that all the miniature solar panels online in their specifications they give the peak voltage and peak current. ...
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0answers
24 views

Current consumption estimate for frequency dependent specification

I am carefully calculating current consumption for current budget limited device. Certain switching devices such as integrated opto-isolator gives current consumption specification in a form of X ...
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1answer
67 views

Datasheet of an unknown IC

When reading the Platinum Resistance Thermometer Manual, I was faced with this unknown IC (see pp. 38 from the manual): I searched the web with the following keywords: ...
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1answer
56 views

How do I use the measurements from the datasheet to create a footprint?

I'm trying to make a footprint for a MPU-6050 6-axis gyroscope and accelerometer. I've added the first 12 pins (out of 24), but now I don't know how to proceed. I've added pin 1-6 and 13-18 but I ...
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3answers
228 views

Need help finding datasheet or pinout for Toshiba TCD2907DG

I really want to play with Toshiba TCD2907DG - this is color linear CCD sensor. I've found a number of datasheets for other TCD*, but not this one. I would really appreciate any reference to ...
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1answer
58 views

Am I interpreting this relay pin diagram correctly?

I'm using a relay for the first time and am unsure if I'm interpreting the pin diagram given in the datasheet correctly: I know a SPDT relay should have five pins: ...
0
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1answer
43 views

Avalanche Photodiode Current Gain

I'm designing a readout circuit for an APD manifactured by Hamamatsu Photonics (datasheet). However, I've found myself lacking some information about exactly how would the device behave in my ...
2
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2answers
44 views

Finding required maximum current rating for a diode which will run in PWM mode

Consider a diode rectifier which will transfer a PWM signal. The duty cycle rate of this PWM signal is \$D\$ (\$0 \le D \le 1\$). The diode on state current is \$I_{ON}\$, and no current will be drawn ...
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2answers
48 views

Extra pins on HD44780 lcd

I am looking at ordering this lcd https://www.sparkfun.com/products/255, however when looking at the picture it seems that there are some extra pins on the right side not described in the hd4470 ...
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1answer
33 views

What is the ALS and BLS pin for on the ISL83204A full-bridge driver chip?

The datasheet for the ISL83204A full-bridge driver chip documents "low sense" pins that connect to the source of the bottom N-channel MOSFETs. As those are typically connected to ground, what is the ...
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1answer
101 views

How these circuit diagrams in the datasheet was made? [closed]

I've seen so many IC datasheets, and so appreciate the elegant reference circuit diagrams they've made. I'm not meaning the 'function' of the circuit, but the 'beautiful' schematics itself, such as ...
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1answer
70 views

How to use MOSFET thermal data for simulating in software

I have a MOSFET (irfb7434pbf) acting as load switch in a circuit. The usual operation is well within the SOA region, but, on situations where the load would short circuit, the MOSFET is set to limit ...
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1answer
100 views

Help me understand this shift register timing diagram

My basic understanding of using a shift register to convert serial to parallel data is this: On every clock pulse, the state of the serial data pin is read As data is read, it gets shifted in to the ...
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0answers
116 views

Finding/figuring out pin configuration on undocumented components

I recently purchased an assorted set of LCD/LED displays, and inside there were a set of components which I cannot find a datasheet for upon googling the component number. For instance in the ...
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1answer
73 views

How to interpret this data sheet?

I'm really confused understanding the following device manual:https://www.endevco.com/product/prodpdf/136.pdf I don't understand most of what they write. Any one has some idea about these terminology? ...
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4answers
705 views

How to read Scaled Graphs?

Please ignore the graphed lines, those are irrelevant to the question, it's the graph itself that's relevant. I see this type of graph used all the time, between ...
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1answer
79 views

how to calculate Ic as the current through the collector and function of the transistor

I am going through this tutorial, they state that "Ic is the current through the collector and function of the transistor" however I haven't really been able to look at the data sheet and figure out ...
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3answers
130 views

Reference to understand LED data sheet specification, characteristic and way to use them

I'm trying to build my own IR-led light with multiple LEDs. I've bought a TSAL6100 IR led but I'm not sure how to interpret the data sheet, I can't find any reference in internet. Can anybody tell me ...
2
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1answer
125 views

Understanding 74LVC245 datasheet and current source/sink

I'm using a SN74LVC245A (datasheet) to shift 5V TTL down to 3.3V so I can read the signals with a Raspberry Pi. However I am getting really weird results (a 60Hz input signal is picked up by the Pi ...
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2answers
72 views

Will this relay handle my current and voltage requirements?

I have this relay: SONGLE SRA-24vdc-cl I want to use it to run 240V 11A device. I can see in the datasheet it can be up to 20A (section 7, line 4-5), but the relay is so small and its legs so ...
0
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1answer
116 views

Where to find I2C register information for MAX21000+?

The datasheet for the MAX21000+ IC contains a table listing all of the registers and their default values but doesn't include any description of each of the register bits. I assume there must be a ...
0
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3answers
35 views

Find product lead dimensions

I am building a project for a robot on breadboard, and I have come across the need for a voltage regulator. I have an existing voltage regulator, but it will not fit into the holes on my breadboard. ...
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3answers
113 views

How to find info on part efficiently?

I'm not exactly a novice to electronics, but my problem is closely related, and I still feel like a complete newbie at those times. I have no problem sourcing parts for new projects. Part of that is ...
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3answers
74 views

LTC2485 I2C Data Format

I am trying to understand the I2C data format of a 24 bits ACD (LTC2485). The data sheet says it returns 4 bytes (32 bits integer), but is unclear as to where the 24 bits I seek are located. Here is ...
2
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2answers
69 views

How to connect AFC terminal on Crystal Oscillator

I'm thinking of using a Temperature compensated crystal oscillator in my next project, specifically the TXC 7L-38.400MBS-T This device has an AFC (Automatic Frequency Control) terminal, but no ...
0
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1answer
84 views

Does SAM4S have FPU onboard?

While trying to use Atmel's ASF library, they say __FPU_PRESENT: Initialize macro __FPU_PRESENT = 1 when building on FPU supported Targets. Enable this macro for M4bf and M4lf libraries ...
6
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2answers
193 views

MOSFET Difference between Normalised On Resistance and Output characteristics

In the datasheet for STP36NE06, it has two graphs which seem to contradict each other: In the graph on the left, for Vgs=10v and ...
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3answers
135 views

I need a basic primer on interpreting vacuum tube datasheets

I am building a prop for a film that needs to have a bunch of glowing vacuum tubes on it. Unfortunately, beyond basic "valve theory", I'm not finding a lot of information about how to interpret the ...
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0answers
189 views

Does anyone have a datasheet for this Arira LCD?

I emailed the manufacturer but they haven't responded to my email. I received this LCD screen in a grab bag from Jameco. Googled for a while and couldn't find anything related to the pinouts of this ...
2
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1answer
166 views

Is there a difference between TI brand of the 74HC595 and the NXP brand?

I have been trying to figure out the functional differences between TI's version of 74HC595 and NXP's version. I've been looking at the function tables in the datasheet for TI and the datasheet for ...
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1answer
93 views

transistor characteristics - Ube0 number meaning

i'm trying to guess meaning of value marked as Ube0 in datasheets. (datasheet adress: http://www.datasheetarchive.com/dlmain/Datasheets-36/DSA-700258.pdf, the transistor I want to use is Tesla ...
1
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1answer
510 views

Where can I find the datasheet for an DGL-0401YG-4EH LCD display

I recently bought a "goodie bag" or whatever it is called with a lot of different displays in the bag. I figured it could be useful someday or just to play around with. However it seems that the ...
4
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3answers
156 views

Why are EEPROM sizes measured in “k” or kbit and not kbyte or byte?

I keep seeing EEPROM datasheets using terms such as 4k, 16k, etc. and they're referring to 4 kilobit and 16 kilobit, bits, megabits, and kilobits are often used. Very seldom do they use byte prefixes. ...
2
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3answers
162 views

Opamp operation with “unbalanced” power supplies

Usually the way to operate an opamp is to feed a +V and a -V of the same magnitude but opposed polarity. Or, just +V and GND. But now, I need an opamp's output to be In a different range. About ...
1
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1answer
67 views

NTE912 Pinout Confusion

The NTE912 contains three standalone BJT transistors and two configured as a differential pair. The datasheet can be found at http://www.nteinc.com/specs/900to999/pdf/nte912.pdf and gives a pin ...
1
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1answer
84 views

DM631 16 channel LED driver

After a bit of advice as reading a datasheet on the DM631, this is a 16 channel constant current LED driver, datasheet can be found here http://www.siti.com.tw/product/spec/LED/DM631.pdf Now the ...
1
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1answer
76 views

What is a mutli-bit port (4-bit, 8-bit, ..etc.)

I've been researching XMOS multicore microcontrollers lately so that I can use them soon. I've worked with many development boards, even made a few of my own, although there is one thing that I don't ...
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2answers
1k views

What is the difference between TCCR1A and TCCR1B [closed]

I had an error in the configuration of PWM for the atmega8 because I didn't set my register properly. But I thought that Timer 1 is timer 1, no matter is TCCR1A or TCCR1B. Why can I set all the timer ...
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2answers
105 views

Need help with finding the electronic schematics

I'm trying to find what kind of circuitry(circuit components or schematics) is used in this anemometer: http://www.nrgsystems.com/sitecore/content/Products/5966.aspx There are a lot of details about ...
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1answer
81 views

Doubts related to SIM300 power rating and its configuration?

I just started reading SIM300 data sheet (http://probots.co.in/Manuals/SIM300.pdf). Under the section 5.3 Power supply ratings.I have few following doubts i) peak supply current transmission is ...