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APPLICATIONS
Input Level Options. -- Two separate switching levels and sensitivities can be
selected for either circuit by making the appropriate pin connections.
Switching levels
can be -varied from +2. 5v to -2. 5v.
Table A-5 gives two standard variations that can be
contained with the various input options.
Refer to Figure A-104 for the typical ST-335
waveform characteristics.
Table A-5.
Typical Input Variations
Pin Connections
Switching Levels
Option
Circuit A
Circuit B
Positive-Moving
Negative-Moving
1
2
8 and 3
6 and 3
OPTION
I
24 and 30
27 and 30
Input
+2.5v
-l.6v
OPTION
2
+6V
·-- __ T\ ________ -----/\- --
l.6V - -
1 NPUT O V _ _ _ _ _ _ _ _ ___,. _ _ _ _ _ _ _ _
I
I
I
I
I
i
I
I
I
I
- 6 V - - - -
- · - - - - - -
1
I
I
------,----
-----
I
I
;
I
1
I
I
I
I
+6V
OUTPUT
ov - - - -·-------
584
Figure A-104.
Schmitt Trigger PAC, Model ST-335,
Typical Waveforms
Input
+l. 6v
-2.5v
-l.6V
-2.5V
A-191
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