The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
This five-volt channel driver provides non-latching, current sensing, short-circuit protection of its output, with low-power dissipation and a low number of active components.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
85% of the total text.
Page 1 of 2
Low Power I/O Channel Driver
This five-volt channel driver provides non-latching, current sensing, short-
circuit protection of its output, with low-power dissipation and a low number of
When the input and inhibit are low, T2 and T4 will be off. This will cause T5
also to be off. Current will now flow out of the main output device T13 and cause
a high logic level at the output. Device T12 will also be outputting current but
proportionally less than T13. Device T11 then senses this current and provides
additional base drive for T9, T12 and T13 through T10. The more output current
needed, the more base drive to T13 will be supplied without causing a larger
drop across R5 and therefore an output voltage drop. The extra base drive by
T10 allows R5 to have a high value and therefore the driver to have a lower
overall power dissipation.
When either the input or inhibit goes to a high state, T2 or T4 will turn on.
This will then turn T5 on and saturate it. This will turn T13 off, as it will T9 and
T12. With T12 off, T11 will sense no current and then have T10 source no base
drive out to T13.
When the output is in s logical high and the output sees a lower than normal
output resistance (a short), extra current will be drawn out of T13. Since T9 sees
an output current proportional to T13, its collector current increase will cause an
increase in the drop across R6. This will turn on T6 and then T7. T7 will then
saturate T8 which will then start to turn o...