DS1394U-33 查看數據表（PDF） - Maxim Integrated

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DS1394U-33

Low-Voltage SPI/3-Wire RTCs with Trickle Charger

Maxim Integrated 

Low-Voltage SPI/3-Wire RTCs with

Trickle Charger

ABSOLUTE MAXIMUM RATINGS

Voltage Range on VCC Pin Relative to Ground .....-0.3V to +6.0V

Voltage Range on Inputs Relative

to Ground ...............................................-0.3V to (VCC + 0.3V)

Operating Temperature Range ...........................-40°C to +85°C

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

Soldering Temperature...........................Refer to the IPC/JEDEC

J-STD-020 Specification.

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.

RECOMMENDED DC OPERATING CONDITIONS

(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted. Typical values are at nominal supply voltage and TA = +25°C,

unless otherwise noted.) (Note 1)

PARAMETER

Supply Voltage (Note 2)

SYMBOL

VCC

DS139x-33

DS139x-3

DS139x-18

CONDITIONS

MIN TYP MAX UNITS

2.97

3.3

5.50

2.7

3.0

3.3

V

1.71

1.8

1.89

Logic 1

VIH

(Note 2)

0.7 x

VCC

VCC +

V

0.5

Logic 0

VIL

(Note 2)

-0.3

+0.3 x

V

VCC

Supply Voltage, Pullup

SQW/INT, SQW, INT, VCC = 0V

VBACKUP Voltage (Note 2)

Power-Fail Voltage (Note 2)

Trickle-Charge Current-Limiting

Resistors

Input Leakage

I/O Leakage

RST Pin I/O Leakage

DOUT Logic 1 Output

DOUT Logic 0 Output

Logic 0 Output

(DS1390/DS1393/DS1394

SQW/INT; DS1392 SQW, INT;

DS1391/DS1393 RST)

VPU

(Note 2)

VBACKUP

VPF

R1

R2

R3

ILI

ILO

ILORST

IOHDOUT

IOHDOUT

-33

-3

-18

-33

-3

-18

(Notes 3, 4)

(Notes 3, 5)

(Notes 3, 6)

(Note 7)

(Note 8)

(Note 9)

-33, -3 (VOH = 0.85 x VCC)

-18 (VOH = 0.80 x VCC)

-33, -3 (VOL = 0.15 x VCC)

-18 (VOL = 0.20 x VCC)

IOLSIR

VCC > 1.71V; VOL = 0.4V

1.3V < VCC < 1.71V; VOL = 0.4V

5.5

V

1.3

3.0 VCC(MAX)

1.3

3.0

3.7

V

1.3

3.0

3.7

2.70 2.88 2.97

2.45

2.6

2.70

V

1.51

1.6

1.71

250

2000

4000

-1

+1

μA

-1

+1

μA

-200

+10

μA

-1

mA

0.750

3

mA

2

3.0

mA

250

μA

VCC Active Supply Current

(Note 10)

-33

ICCA

-3

-18

2

mA

2

500

μA

2 _____________________________________________________________________

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