参数资料
型号: DS2890P-000+T&R
厂商: Maxim Integrated Products
文件页数: 20/27页
文件大小: 0K
描述: IC POT DIGITAL 1-WIRE 100K 6TSOC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 4,000
接片: 256
电阻(欧姆): 100k
电路数: 1
温度系数: 标准值 800 ppm/°C
存储器类型: 易失
接口: 1 线 串行
电源电压: 2.8 V ~ 6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 6-LSOJ
供应商设备封装: 6-TSOC
包装: 带卷 (TR)
DS2890
27 of 27
AC ELECTRICAL CHARACTERISTICS - OVERDRIVE 1-WIRE SPEED
2.8V
≤ V
PUP ≤ 6.0V, -40°C ≤ TA ≤ +85°C
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Recovery Time
tREC
1
s
Reset High Time
tRSTH
48
s
Reset Low Time
tRSTL
48
80
s
Presence Detect High
tPDH
2
6
s
Presence Detect Low
tPDL
8
24
s
Notes:
1. The optimal sampling point for the master is as close as possible to the end time of the 2
μs t
RDV
period without exceeding tRDV. For the case of a Read-one time slot, this maximizes the amount of
time for the pull-up resistor to recover the line to a high level. For a Read-zero time slot it ensures
that a read will occur before the fastest 1-Wire device(s) release the line (tRELEASE = 0).
2. Read data setup time refers to the time the host must pull the 1-Wire bus low to read a bit. Data is
guaranteed to be valid within 1 s of this falling edge.
3. An additional reset or communication sequence cannot begin until the reset high time (tRSTH) has
expired.
4. The reset low time (tRSTL) should be restricted to a maximum of 960 s, to allow interrupt signaling,
otherwise, it could mask or conceal interrupt pulses.
CAPACITANCE
TA = 25
°C
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
1-Wire Pin
800
pF
1
VDD Pin
10
pF
Resistor Terminals
10
pF
NOTE:
1. Capacitance on the 1-Wire pin could be 800 pF when power is first applied. If a 5 k
Ω is used to pull
up the 1-Wire line to VPUP, the capacitance will not affect communications after a 5 μs charge time.
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