参数资料
型号: DS1921Z-F5#
厂商: Maxim Integrated
文件页数: 40/45页
文件大小: 0K
描述: IBUTTON THERMOCHRON F5
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
RoHS指令信息: IButton RoHS Compliance Plan
标准包装: 8
系列: iButton®
存储容量: 512B
存储器类型: NVSRAM(非易失 SRAM)
产品目录页面: 1431 (CN2011-ZH PDF)
PHYSICAL SPECIFICATION
Size
Weight
ABSOLUTE MAXIMUM RATINGS*
IO Voltage to GND
IO Sink Current
Temperature Range DS1921H, DS1921Z
Storage Temperature Range
See mechanical drawing
3.3g
-0.5V, +6V
20mA
-40°C to +85°C**
-40°C to +50°C**
DS1921H/Z
*
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.
** Storage or operation above 50°C significantly reduces battery life.
ELECTRICAL CHARACTERISTICS (V PUP = 2.8V t o 5.25V, T A = -40°C to +85°C)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
IO pin general data
1-Wire Pull-Up R PUP 2.2 k ? 1, 2
Resistance
Input Capacitance C IO 100 800 pF 3, 16
Input Load Current I L IO pin at V PUP 10 μA 4
High-to-Low V TL V PUP > 4.5V 1.14 2.70 V 5, 6, 7,
Switching Threshold 0.71 2.70 16
Input Low Voltage V IL 0.30 V 1, 5, 8
Low-to-High V TH V PUP > 4.5V 1.00 2.70 V 5, 6, 9,
Switching Threshold 0.66 2.70 16
Output low voltage at V OL 0.4 V 5, 10
4mA
Recovery Time t REC Standard Speed, 5 μs 1, 16
R PUP = 2.2k ?
Overdrive Speed, 2
R PUP = 2.2k ?
Overdrive Speed, 5
directly prior to reset
pulse; R PUP = 2.2k ?
Timeslot Duration t SLOT Standard Speed 65 μs 1, 15
Overdrive Speed 8
IO pin, 1-Wire Reset, Presence Detect Cycle
Reset Low Time t RSTL Standard Speed, 480 640 μs 1, 15
V PUP > 4.5V
Standard Speed 540 640
Overdrive Speed 48 80
40 of 45
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