DS12C887A+ 参数 Datasheet PDF下载

Real-Time Clocks

DS12885/DS12887/DS12887A/DS12C887/DS12C887A

ABSOLUTE MAXIMUM RATINGS

Voltage Range on V

CC

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

Operating Temperature Range ...................................................

Commercial (noncondensing) .............................0°C to +70°C

Operating Temperature Range ...................................................

Industrial (noncondensing)...............................-40°C to +85°C

Storage Temperature Range

EDIP ..................................................................-40°C to +85°C

PDIP, SO, PLCC, TQFP ..................................-55°C to +125°C

Lead Temperature (soldering, 10s) .................................+260°C

(Note: EDIP is hand or wave-soldered only.)

Soldering Temperature (reflow)

PDIP, SO, PLCC............................................................+260°C

TQFP .............................................................................+245°C

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.

DC ELECTRICAL CHARACTERISTICS

(V

CC

= +4.5V to +5.5V,

T

A

= over the operating range, unless otherwise noted.) (Note 2)

PARAMETER

Supply Voltage

V

BAT

Input Voltage

Input Logic 1

Input Logic 0

V

CC

Power-Supply Current

V

CC

Standby Current

Input Leakage

I/O Leakage

Input Current

Output at 2.4V

Output at 0.4V

Power-Fail Voltage

VRT Trip Point

SYMBOL

V

CC

V

BAT

V

IH

V

IL

I

CC1

I

CCS

I

IL

I

OL

I

MOT

I

OH

I

OL

V

PF

VRT

TRIP

(Note 6)

(Note 7)

(Note 3)

(Note 3)

(Note 3)

4.0

4.25

1.3

(Note 3)

(Note 3)

(Note 3)

(Note 3)

(Note 4)

(Note 5)

-1.0

-1.0

-1.0

-1.0

4.0

4.5

+1.0

+1.0

+500

CONDITIONS

MIN

4.5

2.5

2.2

-0.3

TYP

MAX

5.5

4.0

V

CC

+

0.3

+0.8

15

UNITS

V

V

V

V

mA

mA

µA

µA

µA

mA

mA

V

V

2

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