Potential Risks of Using Output Pins as Input on Chips

AI Thread Summary
Inputting a signal into an output pin of a chip can lead to varying outcomes based on the strength of the output and the source impedance. If the chip's output is strong and the source impedance is high, it may not damage the chip. However, connecting a low impedance source to a weak output driver can potentially damage the output driver or even cause the chip to fail. Additionally, onboard output capacitors and protection diodes may influence the risk of damage, depending on their voltage, power ratings, and current limits. Overall, caution is advised when interfacing signals with output pins to avoid damaging the chip.
david90
Messages
311
Reaction score
2
what would happen if u input a signal into an output pin of a chip?
 
Engineering news on Phys.org
david90 said:
what would happen if u input a signal into an output pin of a chip?
Depends. If the output on the chip is strong, and the source impedance of your signal that you're connecting to the output is high (weak source), then it probably won't hurt the output of the chip. But if the source impedance of your signal is low (like a few ohms), and the driver for the chip output is not very beefy, then you will likely blow the output driver on the chip. Maybe even let a little smoke out of the chip... :rolleyes:
 
the chip could also have output capacitors onboard, or likely, protection diodes across or in series with the output built onto the chip. In this case, the voltage and power rating of the cap, and the current rating of the diodes will determine if they get damaged.
 
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Thread 'EMF (Electromagnetic Field) & EHS (Electromagnetic Hyper Sensitivity)'

Hello dear reader, a brief introduction: Some 4 years ago someone started developing health related issues, apparently due to exposure to RF & ELF related frequencies and/or fields (Magnetic). This is currently becoming known as EHS. (Electromagnetic hypersensitivity is a claimed sensitivity to electromagnetic fields, to which adverse symptoms are attributed.) She experiences a deep burning sensation throughout her entire body, leaving her in pain and exhausted after a pulse has occurred...
View full post »

Similar threads

Digital phase converters for running 3-phase motors
Replies
27
Views
222
Maxwell Linear Generator (Input Power < Output Power and losses?)
Replies
2
Views
519
Troubleshooting LM311P Output Issue - Tips and Suggestions
Replies
1
Views
1K
Is There a Commercial IC to Monitor Data on a RAM Chip?
Replies
8
Views
2K
How can I reroute multiple signals from a 4 pin connector using a relay switch?
Replies
37
Views
6K
Need a Precision Voltage Divider for -10V to 10V Input and -4V to 4V Output?
Replies
15
Views
2K
Explosion of 74HC14 IC in Old Stock
Replies
11
Views
2K
Charlieplexing: LEDs have different brightness
Replies
14
Views
2K
Impedance mismatch issue in receivers
Replies
11
Views
2K
Modulation & demodulation of GPS output digital data
Replies
10
Views
1K

Hot Threads

Recent Insights

Back
Top