ds2740 Maxim Integrated Products, Inc., ds2740 Datasheet - Page 16

• Manufacturer Part Number: ds2740
• Description: Ds2740 High-precision Coulomb Counter
• Manufacturer: Maxim Integrated Products, Inc.

ELECTRICAL CHARACTERISTICS: 1-Wire INTERFACE—STANDARD SPEED
(2.7V ≤ V
ELECTRICAL CHARACTERISTICS: 1-Wire INTERFACE—OVERDRIVE SPEED
(2.7V ≤ V
Note 1:
Note 2:
Note 3:
Input Logic Low: DQ,
PIO
Output Logic Low:
DQ, PIO
DQ, PIO Input
Pulldown Current
OVD Input Leakage
DQ Capacitance
DQ Low to Sleep Time
Time Slot
Recovery Time
Write 0 Low Time
Write 1 Low Time
Read Data Valid
Reset Time High
Reset Time Low
Presence Detect High
Presence Detect Low
Time Slot
Recovery Time
Write 0 Low Time
Write 1 Low Time
Read Data Valid
Reset Time High
Reset Time Low
Presence Detect High
Presence Detect Low
PARAMETER
PARAMETER
DD
DD
All voltages are referenced to V
Offset performance requires proper circuit layout design free of surface contaminants.
The DS2740 enters the Sleep mode 2.0s to 2.4s after DQ goes low.
≤ 5.5V; T
≤ 5.5V; T
A
A
IL
t
= -20°C to +70°C.)
= -20°C to +70°C.)
V
C
SLEEP
V
I
PD
OVD
DQ
OL
IL
(Note 1)
I
V
V
PIO bit = 1
(Note 3)
OL
DD
DQ
= 4mA (Note 1)
= 4.2V,
= 0.4V
SS
SYMBOL
SYMBOL
.
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
LOW0
LOW1
t
t
LOW0
LOW1
t
SLOT
RSTH
SLOT
RSTH
RSTL
RSTL
RDV
RDV
16 of 16
REC
PDH
REC
PDH
PDL
PDL
MIN
MIN
2.0
-1
480
480
60
60
15
60
48
48
1
1
6
1
6
1
2
8
0.5
TYP
TYP
0.6
0.4
2.4
MAX
MAX
50
1
120
120
960
240
15
15
60
16
16
80
24
2
2
6
UNITS
UNITS
μ A
μ A
pF
V
V
s
μ
μ
μ
μ
μ
μ
μ
μ
μ
μ
μ
μ
μ
μ
μ
μ
μ
μ
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s