ST7285C datasheet(86/117 Pages) STMICROELECTRONICS

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ST7285C

6 ELECTRICAL CHARACTERISTICS

6.1 ABSOLUTE MAXIMUM RATINGS

Devices of the ST72 family contain circuitry to pro-

tect the inputs against damage due to high static

voltage or electric fields. Nevertheless, it is recom-

mended that normal precautions be observed in

order to avoid subjecting this high-impedance cir-

cuit to voltages above those quoted in the Abso-

lute Maximum Ratings. For proper operation, it is

recommended that VIN and VOUT be constrained

within the range:

VSS ≤ VIN and VOUT ≤ VDD

To enhance reliability of operation, it is recom-

mended to configure unused I/Os as inputs and to

connect them to an appropriate logic voltage level

such as VSS or VDD.

All the voltage in the following tables are refer-

enced to VSS.

Stresses above those listed as “Absolute Maxi-

mum Ratings” may cause permanent damage to

the device. Functional operation of the device at

these conditions is not implied. Exposure to maxi-

mum rating conditions for extended periods may

affect device reliability.

Absolute Maximum Ratings (Voltage Referenced to VSS)

Symbol

Ratings

Value

Unit

DD/VDDA/VDDP

Supply Voltage

0.3 to +6

DDA - VDD|

Supply Voltage

< 50

VIN

Input Voltage

VSS - 0.3 to VDD + 0.3

IVDD -IVSS

Total current into V

DD/VSS pins

50/20

Current Drain per Pin Excluding

VDD and VSS

Maximum Operating Temperature

Range

TL to TH

-40to +85

°C

STG

Storage Temperature Range

-65 to +150

°C

High voltage on pins PH3, PH4,

PH5

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