DS1743P datasheet(9/16 Pages) MAXIM

Part #	DS1743P

Description	Y2K-Compliant, Nonvolatile Timekeeping

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Manufacturer	MAXIM [Maxim Integrated Products]

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DS1743/DS1743P Y2K-Compliant, Nonvolatile Timekeeping RAMs

9 of 16

DC ELECTRICAL CHARACTERISTICS (3.3V)

(VCC = 3.3V ±10%, TA = Over the Operating Range.)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Active Supply Current

ICC

10

30

mA

2, 3

TTL Standby Current (

CE = V

IH)

ICC1

0.7

2

mA

2, 3

CMOS Standby Current

(

CE

≥ V

CC - 0.2V;

CE2 = GND + 0.2V)

ICC2

0.7

2

mA

2, 3

Input Leakage Current

(Any Input)

IIL

-1

+1

μA

Output Leakage Current

(Any Output)

IOL

-1

+1

μA

Output Logic 1 Voltage

(IOUT = -1.0mA)

VOH

2.4

1

Output Logic 0 Voltage

(IOUT =2.1mA)

VOL1

0.4

1

Write-Protection Voltage

VPF

2.75

2.97

V

1

Battery Switchover Voltage

VSO

VBAT

or

VPF

V

1, 4

AC CHARACTERISTICS—READ CYCLE (5V)

(VCC = 5.0V ±10%, TA = Over the Operating Range

.)

ACCESS

70ns

85ns

100ns

PARAMETER

SYMBOL

MIN

MAX

MIN

MAX

MIN

MAX

UNITS

NOTES

Read Cycle Time

tRC

70

85

100

ns

Address Access Time

tAA

70

85

100

ns

CE to CE2 to DQ Low-Z

tCEL

5

ns

5

CE Access Time

tCEA

70

85

100

ns

5

CE2 Access Time

tCE2A

80

95

105

ns

5

CE and CE2 Data-Off

Time

tCEZ

25

30

35

ns

OE to DQ Low-Z

tOEL

5

ns

OE Access Time

tOEA

35

45

55

ns

OE Data-Off Time

tOEZ

25

30

35

ns

Output Hold from

Address

tOH

5

ns

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