Rainbow Electronics DS2482-800 - Manual (Page 2)

DS2482-800: Eight-Channel 1-Wire Master
2 of 22
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground -0.5V, +6V
Maximum Current Into Any Pin ±20mA
Operating Temperature Range -40°C to +85°C
Junction Temperature +150°C
Storage Temperature Range -55°C to +125°C
Soldering Temperature See IPC/JEDEC J-STD-020A
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
(V
CC
= 2.9V to 5.5V, T
A
= -40°C to +85°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
3.3V 2.9 3.3 3.7
Supply Voltage V
CC 5V 4.5 5.0 5.5
V
Operating Current I
CC
(Note 1) 0.75 mA
3.3V (Notes 2, 3) 1.9
1-Wire Input High V
IH1 5V (Notes 2, 3) 3.4
V
3.3V (Notes 2, 3) 0.75
1-Wire Input Low V
IL1 5V (Notes 2, 3) 1.0
V
1-Wire Weak Pullup Resistor R
WPU
(Note 4) 800 1675 W
1-Wire Output Low V
OL1
At 4mA load 0.4 V
Standard (Notes 4, 5) 2.3 2.5 2.7
Active Pullup On Time t
APUOT Overdrive (Notes 4, 5) 0.4 0.5 0.6
µs
V
CC
³ 3.2V, 1.5mA load 0.3
Strong Pullup Voltage Drop DV
STRPU
V
CC
³ 5.2V, 3mA load 0.5
V
Standard (3.3V ±5%) 1 4.2 3.3V Pulldown Slew Rate
(Note 6)
PD
SRC Overdrive (3.3V ±5%) 5 22.1
V/µs
Standard (5.0V ±5%) 2 6.5 5V Pulldown Slew Rate
(Note 6)
PD
SRC
Overdrive (5.0V ±5%) 10 40
V/µs
Standard (3.3V ±5%) 0.8 4
3.3V Pullup Slew Rate (Note 6) PU
SRC Overdrive (3.3V ±5%) 1.3 6
V/µs
Standard (5.0V ±5%) 2.7 20
5V Pullup Slew Rate (Note 6) PU
SRC
Overdrive (5.0V ±5%) 3.4 31
V/µs
Power-On Reset Trip Point V
POR
2.2 V
1-Wire TIMING (Note 16) See Figures 3, 5, 6, and 7
Standard 7.6 8 8.4
Write 1/Read Low Time t
W1L Overdrive 0.9 1 1.1
µs
Standard 13.3 14 15
Read Sample Time t
MSR
Overdrive 1.4 1.5 1.8
µs
Standard 65.8 69.3 72.8
1-Wire Time Slot t
slot
Overdrive 9.9 10.5 11.0
µs
3.3V to 0V (Note 5) 0.6 2.6 Fall Time High-to-Low at
Standard Speed (Note 6)
5.5V to 0V (Note 5) 0.7 2.2
3.3V to 0V (Note 5) 0.1 0.5 Fall Time High-to-Low at
Overdrive Speed (Note 6)
t
F1
5.5V to 0V (Note 5) 0.1 0.4
µs