Iron - Description of Products K561PU4.

<b>Iron</b> - Description of Products K561PU4.

 K561PU4 - is a six amplifying elements
ntov adapted to run on inputs
TTL circuits. But the mikruha - the same
CMOS. Accordingly, it does not take on the current
inputs and does not consume current nutrition, to
Then at the inputs of almost 0 or almost voltage
supply. This implies that the food itself
mikruhi still possible between 315 V, and outputs are made in 
CMOS technology energy, give either 0 or supply voltage,

working as power generators, with an ohmic
fall at small currents. Therefore, unless
necessary to immediately convert, and
load mikruhi - indeed TTL logic
ka, then it must also nurture of 5 V. And if
voltage will be large, logical
Kai 1 at the output may damage the TTL input,
attached to this release.

   This feature - sootvetstvovanie
levels / conversion only when the voltage TTL
approximation power - rarely indicated
which leads to incorrect situations and
errors in the work with electronics. After subsequently
lne can assume that the power of CMOS
This chip should be powered (it can not but
rmiruetsya and logical levels, too, and POE
that the correct conversion CMOS signal
fishing is only possible when working with source
having a voltage corresponding to this
CMOS signals), and TTL outputs to form
by TTL standard, which corresponds to 5voltovomu nutrition. But 
then in most micro ruhe should be level limiter and

reference sources. They do not exist in the chip, it simplifies
Puppy and power directly to the TTL on
load formed by the CMOS method, with at
viscous to power the chip itself. However,
outputs are asymmetric, and the logical zeros NE
lyayutsya several times more powerful than
units, which corresponds to the TTL load /
inputs (which follows the input current TTL Lo
booms, and leakage compensation of high level
vnyu).

   But the chip - not just a converter,
he power to CMOS levels, as
output currents are significantly larger than that
Conventional CMOS mikroshem.K unfortunately it was not
import analogue to remove options
does not exclude important differences ...



   During the test took it for output current closure
Kaya it on the + or - food, for the corresponding
sponding logical level, and different stress
niyah supply.



   Short-circuit current output, mA:



  When powered, B: 3 5 7.5 9 12 15

  Logical 1y: 1.3 7.2 18 25 40 54
 Logical 0ya: 7.5 30 70 93 130 165


   These, of course, is approximate, since
for different outputs slightly different ... For
Myka outputs at a supply voltage more
4 V should not be as easy to chip overheating
is and goes down (took it for, short-time
simultaneously closing) ... Fault current can be at
fit at work on the capacitive load.

   While working at the level of "must calculated
vat at the current 1.5 times less and take into account
maximum power dissipation, which
have such chips does not exceed 0.3 watts (given
GOVERNMENTAL not, and can only assume ...). Even
with lower current level output voltage
of will is not ideal, simply because omiches
Coy of field-effect transistors ... So, with
Power 15 V, with a current unit of 30 mA, the chip
"Gobbled up" 3 V supply voltage, while
zero and the current was 110 mA 2 V output.
It is easy to see that it is above the indicative
TTL input switching threshold - 1.3 V. With
protivlenie output a logical zero at the
is approximately 20 ohms, and in unity for
approximately 100 ohms, and it should be taken into account 
when considering lations nagruzki.Poluchaetsya that outputs can 
be used for TTL inputs at a current of 50

mA or less, the output voltage is not
gone beyond the logical zero, or rather
left, but consistent with his condition. But
for such currents created by high cherish
schim voltage level units can be
opasen.Poetomu inputs must be personally under
veshivat to positive through resistors, and logical
sky 0 out PU4 fed through diode Shot
ki (drop it low), eg, 1N5818.
This further eats up the level, and
You can only count to 40 mA (about
and when the supply voltage of 8 V). However,
there is another option - to unite together
several elements that blends well
in CMOS technology, and then get very
powerful element of a good weekend, "driver"
for TTL devices, not counting some
signal delay time ...

   These measurements indicate that the chip more
priorities of work at 5 V, for TTL to
load, or for entirely different - more special
fichnyh - goals. You can commute very
severe pressure, to build momentum limit
edu, Schmitt trigger ... But, of course,
Given the limitations and current, and voltage
Proposition, and speed, and the dip /
Output Resistance ...

   Care must be taken and the "purity"
input signals, since their voltage
half the supply arise powerful
cross-cutting currents, capable of heating about
fight - I had this happen with measurements on
15 V. When voltage is less than 1 / 3 or more
2 / 3 of the load circuit is almost
100% guaranteed maximum current of you
stroke, and intermediate input
voltage output is significantly reduced in
time switch "element. Combining
all the inputs together and giving them an intermediate
the exact voltage, it is possible to observe the maximum
mum current consumption without load
moment of switching. Because of the asymmetry of
moves, it is maximal at voltages slightly
less than half the power. Schedule changes
equation of current consumption, depending on the
Input voltage (all inputs together, and
no load at outputs) corresponds to any
Bohm nutrition, with the only difference that the peak
shifted to a lower voltage at IU
nshih values of power, and the currents corresponding
respectively, below. Sam schedule roughly approximate, and
curve is rather conventional, but it allows a whole
"Ask the price" to the possible value pair
meter. Perhaps, the maximum current consumption
of even more (even at 25%), since
different elements of different sensitivity
on the input and the peak current were not all in
maximum open position.


   The approximate maximum current consumption
chip, no load, with zaparallelennymi inputs (probably 
understated by 25%) at different input voltages V. mA:



 Meals: 3 5 7.5 12 September 1915

1 / 3 Ucc 1 1.7 2.5 3 4 5
Current 1 / 3 - 0.35 2 3.5 8.2 14.6
2 / 5 Ucc 1.2 February 3 03.06 04.08 6
Current 2 / 5 - 0.84 02.07 08.05 3.12 25
peak Uin 1.3 2.3 3.58 4.4 5.6 7
peak current 0.1 6.4 27.5 45 80 110
3 / 5 Ucc 1.7 3 4.5 4.5 7.2 9
Current 3 / 5 - 0.2 2.7 2.5 12.3 22
2 / 3 Ucc 2 3.2 5 6 9 10
current 2 / 3 - - 1.3 2.7 8 5.14


   Dashes indicate too low current and
I did not switch the limit of the tester to
its measure, it is unlikely someone will need it
camping, and then themselves potestit ... It should also be
take into account the general inaccuracy of the data, up to 
5-10%. 


            By KSA-7G 4.11.2006