Rainbow-electronics DS1393 Manuel d'utilisateur télécharger pdf (Page 2)

DS1390/DS1391/DS1392/DS1393

Low-Voltage SPI/3-Wire RTCs with

Trickle Charger

2 _____________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

RECOMMENDED DC OPERATING CONDITIONS

= V

CC(MIN)

to V

CC(MAX)

, T

= -40°C to +85°C, unless otherwise noted. Typical values are at nominal supply voltage and T

= +25°C,

unless otherwise noted.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Voltage Range on V

Pin Relative to Ground .....-0.3V to +6.0V

Voltage Range on Inputs Relative

to Ground ...............................................-0.3V to (V

+ 0.3V)

Operating Temperature Range ...........................-40

°C to +85°C

Storage Temperature Range .............................-55°C to +125°C

Soldering Temperature .......................................See IPC/JEDEC

J-STD-020A Specification

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

DS139x-33

2.97

3.3

5.50

DS139x-3 2.7 3.0 3.3

Supply Voltage (Note 2) V

DS139x-18

1.71

1.8

1.89

Logic 1 V

(Note 2)

0.7 x

0.5

Logic 0 V

(Note 2)

-0.3

+0.3 x

Supply Voltage, Pullup

SQW/INT, SQW, INT, V

= 0V

(Note 2) 5.5 V

-33 1.3

3.0 V

(

MAX

)

-3 1.3 3.0 3.7

BACKUP

Voltage (Note 2)

BACKUP

-18 1.3 3.0 3.7

-33

2.70 2.88 2.97

-3

2.45

2.6

2.70

Power-Fail Voltage (Note 2) V

-18

1.51

1.6

1.71

R1 (Notes 3, 4)

250

R2 (Notes 3, 5)

2000

Trickle-Charge Current-Limiting

Resistors

R3 (Notes 3, 6)

4000

Ω

Input Leakage I

(Note 7) -1 +1 µA

I/O Leakage I

(Note 8) -1 +1 µA

RST Pin I/O Leakage I

LORST

(Note 9)

-200 +10

µA

-33, -3 (V

= 0.85 x V

)-1

DOUT Logic 1 Output

OHDOUT

-18 (V

= 0.80 x V

)

0.750

-33, -3 (V

= 0.15 x V

DOUT Logic 0 Output

OHDOUT

-18 (V

= 0.20 x V

> 1.71V; V

= 0.4V 3.0 mA

Logic 0 Output

(DS1390/DS1393 SQW/INT;

DS1392 SQW, INT;

DS1391/DS1393 RST)

OLSIR

1.3V < V

< 1.71V; V

= 0.4V 250 µA

-33 2

-3 2

Active Supply Current

(Note 10)

CCA

-18 500 µA

1 2 3 4 5 6 7 ... 23 24

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Rainbow-electronics DS1393 Manuel d'utilisateur Page 2

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