DS1746WP-70 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated

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DS1746WP-70

Y2KC Nonvolatile Timekeeping RAM

Dallas Semiconductor -> Maxim Integrated 

DS1746/DS1746P

DC ELECTRICAL CHARACTERISTICS

PARAMETER

(Over the Operating Range; VCC = 3.3V ± 10%)

SYMBOL MIN

TYP

MAX UNITS NOTES

Active Supply Current

Icc

30

mA

2,3

TTL Standby Current

( CE = VIH)

Icc1

CMOS Standby Current

( CE ≥VCC-0.2V)

Icc2

Input Leakage Current (any input)

IIL

-1

Output Leakage Current

(any output)

IOL

-1

2

mA

2,3

2

mA

2,3

+1

µA

+1

µA

Output Logic 1 Voltage

(IOUT = -1.0 mA)

Output Logic 0 Voltage

(IOUT = +2.1 mA)

Write Protection Voltage

Battery Switch Over Voltage

VOH

2.4

1

VOL

0.4

1

VPF

2.80

2.97

V

1

VBAT

VSO

or

V

1,4

VPF

READ CYCLE, AC CHARACTERISTICS

PARAMETER

(Over the Operating Range; VCC = 5.0V ± 10%)

SYMBOL MIN TYP MAX UNITS NOTES

Read Cycle Time

tRC

70

ns

Address Access Time

tAA

70

ns

CE to DQ Low-Z

tCEL

5

ns

CE Access Time

tCEA

70

ns

CE Data Off Time

tCEZ

25

ns

OE to DQ Low-Z

tOEL

5

ns

OE Access Time

tOEA

35

ns

OE Data Off Time

tOEZ

25

ns

Output Hold from Address

tOH

5

ns

8 of 18

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