
Electrical characteristics ST72321xx-Auto
202/243 Doc ID 13829 Rev 1
19.7.3 Absolute maximum ratings (electrical sensitivity)
Based on two different tests (ESD and LU) using specific measurement methods, the
product is stressed in order to determine its performance in terms of electrical sensitivity.
For more details, refer to the application note AN1181.
Electrostatic discharge (ESD)
Electrostatic discharges (a positive then a negative pulse separated by 1 second) are
applied to the pins of each sample according to each pin combination. The sample size
depends on the number of supply pins in the device (3 parts*(n+1) supply pin). Two models
can be simulated: Human Body Model and Machine Model. This test conforms to the
JESD22-A114A/A115A standard.
Static latch-up (LU)Two complementary static tests are required on six parts to assess
the latch-up performance:
● A supply overvoltage is applied to each power supply pin.
● A current injection is applied to each input, output and configurable I/O pin.
These tests are compliant with the EIA/JESD 78 IC latch-up standard.
Table 124. ESD absolute maximum ratings
Symbol Ratings Conditions Max. value
(1)
1. Data based on characterization results, not tested in production.
Unit
V
ESD(HBM)
Electrostatic discharge voltage
(Human Body Model)
T
A
+25°C
2000
V
V
ESD(MM)
Electrostatic discharge voltage
(Machine Model)
200
Table 125. Electrical sensitivities
Symbol Parameter Conditions Class
(1)
1. Class description: A Class is an STMicroelectronics internal specification. All its limits are higher than the
JEDEC specifications, that means when a device belongs to Class A it exceeds the JEDEC standard. B
Class strictly covers all the JEDEC criteria (international standard).
LU Static latch-up class
T
A
+25°C
T
A
+85°C
T
A
+125°C
A
A
A
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