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DS1985
ABSOLUTE MAXIMUM RATINGS*
Voltage on any Pin Relative to Ground
Operating Temperature
Storage Temperature
-0.5V to +12.0V
-40°C to +85°C
-55°C to +125°C
?
This is a stress rating only and functional operation of the device at these or any other conditions
outside 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 +85°C)
PARAMETER
Logic 1
Logic 0
Output Logic Low @ 4 mA
Output Logic High
SYMBOL
V IH
V IL
V OL
V OH
MIN
2.2
-0.3
TYP
V PUP
MAX
+0.8
0.4
6.0
UNITS
V
V
V
V
NOTES
1,6
1,10
1
1,2
Input Load Current
Operating Charge
I L
Q OP
5
30
? A
nC
3
7,8
Programming Voltage @ 10 mA
V PP
11.5
12.0
V
CAPACITANCE
(T A = 25 ? C)
PARAMETER
Data (1-Wire)
SYMBOL
C IN/OUT
MIN
TYP
MAX
800
UNITS
pF
NOTES
9
AC ELECTRICAL CHARACTERISTICS
(V PUP =2.8V to 6.0V; -40 ? C to +85 ? C)
PARAMETER
Time Slot
Write-1 Low Time
Write-0 Low Time
SYMBOL
t SLOT
t LOW1
t LOW0
MIN
60
1
60
TYP
MAX
120
15
120
UNITS
? s
? s
? s
NOTES
Read Data Valid
t RDV
exactly 15
? s
Release Time
t RELEASE
0
15 45
? s
Read Data Setup
Recovery Time
Reset Time High
Reset Time Low
t SU
t REC
t RSTH
t RSTL
1
480
480
1
? s
? s
? s
? s
5
4
Presence Detect High
Presence Detect Low
Delay to Program
Delay to Verify
Program Pulse Width
Program Voltage Rise Time
Program Voltage Fall Time
t PDHIGH
t PDLOW
t DP
t DV
t PP
t RP
t FP
15
60
5
5
480
0.5
0.5
60
240
5.0
5.0
? s
? s
? s
? s
? s
? s
? s
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