Datasheet

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TSZ02201-0RFR0G200530-1-2

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6.July.2015 Rev.001

TSZ22111･15･001

LM393xxx

LM2903xx

LM339xx

LM2901xx

Operational Notes – continued

11. Regarding Input Pins of the IC

This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them

isolated. P-N junctions are formed at the intersection of the P layers with the N layers of other elements, creating a

parasitic diode or transistor. For example (refer to figure below):

When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode.

When GND > Pin B, the P-N junction operates as a parasitic transistor.

Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual

interference among circuits, operational faults, or physical damage. Therefore, conditions that cause these diodes to

operate, such as applying a voltage lower than the GND voltage to an input pin (and thus to the P substrate) should be

avoided.

NN

P

NN

P Substrate

Parasitic

Element

GND

N

NN

N P

P Substrate

GND

GND

Parasitic

Element

Pin A

Pin A

Pin B

Pin B

BC

E

Parasitic

Element

GND

Parasitic element

or Transistor

Parasitic

Element

C

B

E

Transistor (NPN)

Resistor

Figure 52. Example of Monolithic IC Structure

12. Unused Circuits

When there are unused circuits it is recommended that they be connected as in Figure 53, setting the non-inverting

Figure 53. Disable Circuit Example

13. Input Voltage

Applying Vcc

destruction, regardless of the supply voltage. However, this does not ensure normal circuit operation. Please note that

the circuit operates normally only when the input voltage is within the common-mode input voltage range of the electric

characteristics.

14. Power Supply (single/dual)

The comparator operates when the specified voltage supplied is between Vcc

comparator can be used as a dual supply comparator as well.

15. Terminal short-circuits

When the output and Vcc

subsequently, destruction.

16. IC Handling

Applying mechanical stress to the IC by deflecting or bending the board may cause fluctuations in the electrical

characteristics due to piezo resistance effects.

Please keep

+

-

Vcc

+

Vcc

-

OPEN