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参数资料
| 型号： | DS2490Y |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 27/50页 |
| 文件大小： | 0K |
| 描述： | IC BRIDGE CLIP USB TO 1-W 24SOIC |
| 标准包装： | 1,000 |
| 应用： | USB |
| 接口： | 1 线 |
| 电源电压： | 3 V ~ 5.5 V |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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DS2490
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SUSPEND OUTPUT
Suspend output signal ( SUSO ) operation is a function of both the USB device state of the DS2490
(configured or unconfigured) and the USB suspend state. A truth table for signal operation is listed in
Table 19. This signal could be used stand-alone or combined with other external signals to power down
circuitry external to the DS2490, such as power sources. The SUSO signal is an open drain output and
requires an external pullup.
Suspend Output Operation Table 19
Device State
Suspend State
SUSO
unconfigured
don’t care
HIGH
configured
not suspended
HIGH
configured
suspended
LOW
OSCILLATOR
The DS2490 requires a single 12.0MHz crystal or crystal oscillator clock source to operate. Crystals or
CMOS crystal oscillators may be used to provide clock sources. For crystals, use parallel resonant,
fundamental mode with a CL specification between 10pF and 20pF at the required frequency. Parallel
loading capacitors with a value of approximately twice CL are also required. The connection scheme
shown in Figure 11 should be used. For external CMOS crystal oscillators, make a connection directly to
the DS2490 XI input. The XO output must be left floating for this arrangement.
Oscillator Connection Figure 11
33 pF
DS2490
XI
XO
33 pF
12 MhZ
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2490Y+ | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Tape and Reel |
| DS24B33 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
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