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Questions tagged [specifications]

Specifications for an electronic component provide the basis for parametric part selection for operation or optimum performance of a circuit or to prevent damage to integral or connected circuit components.

1 vote
1 answer
42 views

What determines I2C interrupt service time after address byte ACK?

I am looking at the NXP spec for I2C and what I don't understand is the timing constraint for the portion of the transmission where the "clock line held LOW while interrupts are serviced" (...
tronhawk's user avatar
  • 229
0 votes
2 answers
52 views

Sample and Hold IC specification

I am currently designing my 3rd year project in EE. I have an MCU with an ADC that samples at 15 kHz. The signal I want to sample has a 0.5 µs rise time which is equivalent to a bandwidth of 700 kHz, ...
Mandla's user avatar
  • 3
-1 votes
1 answer
83 views

What specs should i look for for a mosfet in this project? [closed]

I am a hobbyist and not a native so bear with me. I need a MOSFET that can switch at ~ 100 MHz and withstand up to ~ 40 V and 40 A with a variable duty cycle. If my calculation corrects 1/100 MHz ...
Tintin's user avatar
  • 75
0 votes
1 answer
33 views

Origin and underlying sense of the term "Posted" in PCIe

When PCI Express replaced the operation of reading directly from a PCI peripheral card over a bus, directly addressing its I/O ports, or performing a configuration cycle on it directly, with instead a ...
BobH's user avatar
  • 11
2 votes
4 answers
145 views

Exceeding a relay's safety AC rating

I was wondering if it would be a safety hazard to exceed a relay's AC rating of 125VAC with 230VAC? Will it work? Here's the data sheet. I'm using the 5V variant. Image source: Mantech Electronics - ...
Zipho Lunika's user avatar
0 votes
1 answer
31 views

Voltage reference 1/f noise datasheet comparison

I would like to compare the 1/f noise of the voltage references LT1021 and LTC6655. The LTC6655 has a spec of 0.25 ppm (0.1-10Hz) and the LT1021 has 3uV_pp (0.1-10Hz). I assume these datasheet ...
Stefan Wyss's user avatar
  • 7,653
2 votes
1 answer
52 views

Isolation voltage spec in transformer

Could you please help me understanding this transformer spec? I am planning to use HCTSM80101AAL transformer and I would like to make sure that I am referencing the proper specification for voltage ...
Alia Sana's user avatar
1 vote
1 answer
402 views

Mean Well Power supplies have much lower efficiency and much higher leakage current than rated

I am going to have a power supply which will always be connected to AC mains and occasionally, a led strip will be connected and disconnected to the supply with a relay. I want an efficient and low &...
CaveScientist's user avatar
3 votes
3 answers
336 views

How to interpret External Clearance spec on HCPL3700M IC?

The spec for the HCPL3700M (AC voltage detection IC) lists an "External Clearance" of ≥7.4mm. Is this saying that no component or exposed trace should be within 7.4mm on any side of the chip?...
user272901's user avatar
5 votes
1 answer
145 views

Why are Lunar White LEDs not a standard part, or what am I missing?

TL;DR: Lunar White is a widely-used standard color in signaling work (like, every pedestrian signal that conforms to ITE specifications uses it, as far as I can tell), so why can't you buy Lunar White ...
ThreePhaseEel's user avatar
-1 votes
1 answer
107 views

What does 'Minimum Holding Voltage" refer to for a Thermal Fuse?

One of the components I am looking at for a new design is a thermal fuse. In the documentation it refers to a "Minimum holding voltage". Source: https://www.bourns.com/docs/Product-...
JohnFahey's user avatar
4 votes
2 answers
286 views

What is meant by TTL in this context?

Regarding this driver manual, the analog input has range 0-5 V with 1 MΩ input impedance. But the manual also writes that the analog input is not TTL compatible: I thought the term "TTL ...
GNZ's user avatar
  • 1,791
0 votes
2 answers
119 views

Calculate DC cable diameter

Please assist in defining the required DC cable diameter for the following requirements: Voltage: 48 volts Watt: 8500 watt Running distance: 50 meters
Ali Safa's user avatar
0 votes
1 answer
125 views

Transistor as switch that can handle a high base current [closed]

Which cheap, simple transistor can handle a high base current and doesn't need a base resistor to use it as switch?
Nonok cantik's user avatar
3 votes
1 answer
1k views

EDID emulation in HDMI and DisplayPort, is DisplayPort really more difficult?

I've been doing a lot research on EDID and HDMI and DisplayPort and I have a question about the relative difficulty of always-on EDID Emulation between the two specs. With HDMI, almost every Matrix ...
Evan Carroll's user avatar

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