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参数资料
| 型号： | DS2490 |
| 英文描述： | USB to 1-Wire Bridge Chip |
| 中文描述： | USB与1-Wire桥接芯片 |
| 文件页数： | 34/50页 |
| 文件大小： | 530K |
| 代理商： | DS2490 |
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DS2490
34 of 50
033199
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
-0.5V to +7.0V
0
o
C to +70
o
C
-55
o
C to +125
o
C
260
o
C for 10 seconds
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.
RECOMMENDED DC OPERATING CONDITIONS
PARAMETER
USB I/F Supply Voltage
Digital Supply Voltage
EPROM Programming
Supply Voltage
(programming supported)
EPROM Programming
Supply Voltage
(programming not supported)
Input Logic 0
Input Logic 1
Operating Temperature
SYMBOL
VB
VD
VPP
MIN
3.0
4.4
11.75
TYP
3.3
5.0
12.0
MAX
3.6
5.5
12.25
UNITS
V
V
V
NOTES
1, 3
1, 3
1, 3
VPP
4.4
5.0
5.5
V
1, 2, 3
VIL
VIH
TA
-0.3
2.8
0
0.3
V
V
o
C
1
1
VD + 0.3
70
25
NOTES:
1.
Voltage referenced to ground.
2.
When EPROM programming is not supported VPP must be tied to VD.
3.
During device power-up, the supply application sequence order must be VD, VPP, VB.
DC ELECTRICAL CHARACTERISTICS
TA: 0
o
C - 70
o
C
VD: 4.4V - 5.5V, VB:3.0V - 3.6V
TYP
MAX
tbd
tbd
20
VD-1.1
PARAMETER
VD Operating Current
VB Operating Current
Idle Current on VPP
Active Pullup Timer
Threshold
Active Pullup On Threshold
1-Wire Input High
1-Wire Input Low
1-Wire Weak Pullup Current
1-Wire Active Pullup current
Strong Pullup Voltage Drop
SYMBOL
I
D
I
B
I
PP
V
IAPTO
MIN
UNITS
mA
mA
μA
V
NOTES
4
4
1
VD-1.4
V
IAPO
V
IH1
V
IL1
I
WEAKPU
I
ACTPU
V
STRPU
0.95
1.2
V
V
V
3.4
1.8
5.0
1.8
9
3.0
15
mA
mA
V
0.5
2
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PDF描述 |
|---|---|
| DS2490S | USB to 1-Wire Bridge Chip |
| DS2502-E64 | IEEE EUI-64 Node Address Chip |
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| DS26334G | 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2490S | 功能描述:接口 - 专用 RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| DS2490S+ | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Rail/Tube 制造商:Maxim Integrated Products 功能描述:USB 1-W BRIDGE CHIP 24-SO LF 制造商:Maxim Integrated Products 功能描述:Bulk |
| DS2490S+T&R | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Tape and Reel |
| DS2490S+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:USB to 1-Wire Bridge Chip |
| DS2490X | 制造商:未知厂家 制造商全称:未知厂家 功能描述:USB to 1-Wire Bridge Chip(468.41 k) |
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