DS1646 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated

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DS1646

Nonvolatile Timekeeping RAM

Dallas Semiconductor -> Maxim Integrated 

DS1646/DS1646P

ABSOLUTE MAXIMUM RATINGS*

Voltage on Any Pin Relative to Ground

Operating Temperature

Storage Temperature

Soldering Temperature

–0.3V to +7.0V

0°C to 70°C

–20°C to +70°C

260°C for 10 seconds (See Note 7)

* This is a stress rating only and functional operation of the device at these or any other conditions above those

indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods of time may affect reliability.

RECOMMENDED DC OPERATING CONDITIONS

PARAMETER

SYMBOL MIN

Supply Voltage

Logic 1 Voltage All Inputs

Logic 0 Voltage All Inputs

VCC

4.5

VIH

2.2

VIL

–0.3

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL MIN

Average VCC Power Supply

ICC1

Current

TTL Standby Current (CE = VIH)

ICC2

CMOS Standby Current

ICC3

(CE=VCC –0.2V)

Input Leakage Current (any input)

IIL

–1

Output Leakage Current

IOL

–1

Output Logic 1 Voltage

(IOUT = –1.0 mA)

VOH

2.4

Output Logic 0 Voltage

VOL

(IOUT = +2.1 mA)

Write Protection Voltage

VPF

4.0

(0°C to 70°C)

TYP

MAX

UNITS NOTES

5.0

5.5

V

1

VCC +0.3

V

0.8

V

(0°C ≤ tA ≤ 70°C; VCC=5.0V ± 10%)

TYP

MAX

UNITS NOTES

85

mA

2, 3

3

6

mA

2, 3

2

4.0

mA

2, 3

+1

µA

+1

µA

V

0.4

V

4.25

4.5

V

031698 5/12

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