DS1977 Просмотр технического описания (PDF) - Maxim Integrated
Номер в каталоге
Компоненты Описание
производитель
DS1977 Datasheet PDF : 29 Pages
| |||
PHYSICAL SPECIFICATION
Size
Weight DS1977
See mechanical drawing
Ca. 3.3g
DS1977
ABSOLUTE MAXIMUM RATINGS
I/O Voltage to GND
I/O Sink Current
Junction Temperature
Storage Temperature Range
-0.3V, +5.5V
20mA
+150°C
-40°C to +85°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is
not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device.
ELECTRICAL CHARACTERISTICS
(VPUP = 2.8V to 5.25V, TA = -40°C to +85°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
I/O Pin General Data
1-Wire Pullup
Resistance
RPUP
(Notes 1, 2)
0.6
2.2
k
Input Capacitance
Input Load Current
High-to-Low Switching
Threshold
CIO
(Note 3)
IL
I/O pin at VPUP
VTL
(Notes 4, 5)
5
nF
1
10
µA
0.5
3.2
V
Input Low Voltage
Low-to-High Switching
Threshold
VIL
(Notes 1, 6)
VTH
(Notes 4, 7)
0.30
V
0.7
3.4
V
Switching Hysteresis
Output-Low Voltage at
4mA
VHY
(Note 8)
VOL
(Note 9)
0.15
N/A
V
0.4
V
Standard speed, RPUP= 2.2k
(Note 1)
5
Recovery Time
Overdrive speed, RPUP= 2.2k
tREC
(Note 1)
2
µs
Overdrive speed, directly prior
to reset pulse; RPUP= 2.2k
5
(Note 1)
Rising-Edge Hold-off
Time
tREH
Standard speed (Note 10)
Overdrive speed (Note 10)
0.5
0.5
5
2
µs
Timeslot Duration
tSLOT
Standard speed (Note 1)
Overdrive speed (Note 1)
65
8
µs
I/O Pin, 1-Wire Reset, Presence Detect Cycle
Reset Low Time
tRSTL
Standard speed (Note 1)
Overdrive Speed (Note 1)
480
48
640
80
µs
Presence Detect High
Time
tPDH
Standard speed (Note 11)
Overdrive speed (Note 11)
15
2.5
60
6.5
µs
Presence Detect Fall
Time
Standard speed, VPUP > 4.5V
tFPD
(Note 12)
Standard speed (Note 12)
1.5
1.5
5
8
µs
Overdrive speed (Note 12)
0.15
1
Presence Detect Low
Time
tPDL
Standard speed
Overdrive speed
60
8
240
24
µs
2 of 29
Share Link: 