Rainbow-electronics DS1996 Manual do Utilizador descarregar pdf (Página 17)

DS1996

17 of 18

PHYSICAL SPECIFICATIONS

Size See mechanical drawing

Weight 3.3 grams (F5 package)

Humidity 90% RH at 50°C

Altitude 10,000 feet

Expected Service Life 10 years at 25°C

Safety Meets UL#913 (4

Edit.); Intrinsically Safe

Apparatus, Approved under Entity Concept

for use in Class I, Division 1, Group A, B, C

and D Locations (application pending)

ABSOLUTE MAXIMUM RATINGS*

Voltage on any Pin Relative to Ground -0.5V to +7.0V

Operating Temperature -40°C to +70°C

Storage Temperature -40°C to +70°C

∗ This is a stress rating only and functional operation of the device at these or any other conditions

above those indicated in the operation sections of this specification is not implied. Exposure to

absolute maximum rating conditions for extended periods of time may affect reliability.

DC ELECTRICAL CHARACTERISTICS (V

PUP

=2.8V to 6.0V, -40°C to +70°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Logic 1 V

2.2 V

+0.3 V 1, 8

Logic 0 V

-0.3 +0.8 V 1

Output Logic Low @ 4 mA V

0.4 V 1

Output Logic High V

PUP

6.0 V 1, 2

Input Load Current I

5 µA 3

CAPACITANCE (T

= 25°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

I/O (1-Wire) C

IN/OUT

100 800 pF 6

AC ELECTRICAL CHARACTERISTICS REGULAR SPEED (-40°C to 70°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Time Slot t

SLOT

60 120 µs

Write 1 Low Time t

LOW1

1 15 µs

Write 0 Low Time t

LOW0

60 120 µs

Read Data Valid t

RDV

exactly 15 µs

Release Time t

RELEASE

0 15 45 µs

Read Data Setup t

1 µs 5

Recovery Time t

REC

1 µs

Reset Time High t

RSTH

480 µs 4

Reset Time Low t

RSTL

480 µs 7

Presence Detect High t

PDH

15 60 µs

Presence Detect Low t

PDL

60 240 µs

1 2 ... 12 13 14 15 16 17 18

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