Rainbow-electronics DS1554 Manual do Utilizador descarregar pdf (Página 11)

DS1554

11 of 20

DC ELECTRICAL CHARACTERISTICS

(Over the Operating Range; V

CC

=3.3V ±10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Active Supply Current I

CC

10 30 mA 2, 3

TTL Standby Current (CE = V

IH

)

I

CC1

0.7 3 mA 2, 3

CMOS Standby Current

(CE ≥=V

CC

- 0.2V)

I

CC2

0.7 2 mA 2, 3

Input Leakage Current (any input) I

IL

-1 +1

µA

Output Leakage Current

(any output)

I

OL

-1 +1

µA

Output Logic 1 Voltage

(I

OUT

= -1.0 mA)

V

OH

2.4 V 1

Output Logic 0 Voltage

(I

OUT

=2.1 mA, DQ0-7 Outputs) V

OL1

0.4 V 1

(I

OUT

=7.0 mA, IRQ /FT and RST

Outputs)

V

OL2

0.4 V 1, 5

Write Protection Voltage V

PF

2.80 2.97 V 1

Battery Switch Over Voltage V

SO

V

BAT

or

V

PF

V 1, 4

READ CYCLE TIMING DIAGRAM Figure 5

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 19 20

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