Rainbow-electronics DS1747P Bedienungsanleitung PDF herunterladen (Seite 8)

DS1747/DS1747P

8 of 18

DC ELECTRICAL CHARACTERISTICS

(Over the Operating Range; V

CC

= 3.3V ± 10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Active Supply Current Icc 30 mA 2,3

TTL Standby Current

(

CE = V

IH

)

Icc

1

2mA 2,3

CMOS Standby Current

(

CE ³V

CC

-0.2V)

Icc

2

2mA 2,3

Input Leakage Current (any

input)

I

IL

-1 +1

mA

Output Leakage Current

(any output)

I

OL

-1 +1

mA

Output Logic 1 Voltage

(I

OUT

= -1.0 mA)

V

OH

2.4 1

Output Logic 0 Voltage

(I

OUT

= +2.1 mA)

V

OL

0.4 1

Write Protection Voltage V

PF

2.80 2.97 V 1

Battery Switch Over Voltage

V

SO

V

BAT

or

V

PF

V1,4

READ CYCLE, AC CHARACTERISTICS

(Over the Operating Range; V

CC

= 5.0V ± 10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Read Cycle Time

t

RC

70 ns

Address Access Time

t

AA

70 ns

CE to DQ Low-Z

t

CEL

5ns

CE E Access Time

t

CEA

70 ns

CE Data Off Time

t

CEZ

25 ns

OE to DQ Low-Z

t

OEL

5ns

OE Access Time

t

OEA

35 ns

OE Data Off Time

t

OEZ

25 ns

Output Hold from Address

t

OH

5ns

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 17 18

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