DS1746 datasheet(8/18 Pages) DALLAS

Part #	DS1746

Description	Y2K-Compliant, Nonvolatile Timekeeping RAMs

PDF	18 Pages

Scroll/Zoom	100%

Manufacturer	DALLAS [Dallas Semiconductor]

Direct Link	https://www.maximintegrated.com/en.html

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8 / 18 page

DS1746/DS1746P

8 of 18

DC ELECTRICAL CHARACTERISTICS

(Over the Operating Range; VCC = 3.3V

± 10%)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Active Supply Current

Icc

2,3

TTL Standby Current

( CE = VIH)

Icc1

2mA

2,3

CMOS Standby Current

( CE

≥V

CC-0.2V)

Icc2

2mA

2,3

Input Leakage Current (any input)

IIL

-1

µA

Output Leakage Current

(any output)

IOL

-1

µA

Output Logic 1 Voltage

(IOUT = -1.0 mA)

VOH

2.4

Output Logic 0 Voltage

(IOUT = +2.1 mA)

VOL

0.4

Write Protection Voltage

VPF

2.80

2.97

Battery Switch Over Voltage

VSO

VBAT

VPF

V1,4

READ CYCLE, AC CHARACTERISTICS

(Over the Operating Range; VCC = 5.0V

± 10%)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Read Cycle Time

tRC

Address Access Time

tAA

CE to DQ Low-Z

tCEL

5ns

CE Access Time

tCEA

CE Data Off Time

tCEZ

OE to DQ Low-Z

tOEL

5ns

OE Access Time

tOEA

OE Data Off Time

tOEZ

Output Hold from Address

tOH

5ns

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