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参数资料
| 型号： | DS2117MB |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Bus Terminator |
| 英文描述： | 9-LINE 52 ohm SCSI BUS TERMINATOR, PDSO36 |
| 封装： | SSOP-36 |
| 文件页数： | 3/9页 |
| 文件大小： | 265K |
| 代理商： | DS2117MB |
DS2117M
3 of 9
To ensure proper operation, the TPWR pin should be connected to the SCSI bus TERMPWR line. As
with all analog circuitry, the TERMPWR and VDD lines should be bypassed locally. A 2.2
F capacitor
and a 0.01
F high frequency capacitor is recommended between TPWR and ground and placed as close
as possible to the DS2117M. The DS2117M should be placed as close as possible to the SCSI connector
to minimize signal and power trace length, thereby resulting in less input capacitance and reflections
which can degrade the bus signals.
To maintain the specified regulation, a 4.7
F capacitor is required between the Vref pin (VREF) and
ground of each DS2117M. A high frequency cap (0.1
F ceramic recommended) can also be placed on
the Vref pin in applications that use fast rise/fall time drivers. A typical SCSI bus configuration is shown
in Figure 2.
DIFFSENS noise filtering The DS2117M incorporates a digital filter to remove high frequency
transients on the DIFFSENS control line, thereby eliminating erroneous switching between modes. This
filter eliminates the need for the external capacitor and resistor, which heretofore performed this function.
The external filter may be used in addition to the digital filter if the DS2117M and DS2118M are to be
used interchangeably.
NOTE:
DIFFSENS – Refers to the SCSI bus signal.
DIFFSENSE – Refers to the DS2117M pin name and internal circuitry capable of driving the
DIFFSENS line.
DIFF_CAP - Refers to the DS2117M pin name and internal circuitry relating to monitoring the
DIFFSENS line.
相关PDF资料 |
PDF描述 |
|---|---|
| DS2118M | 9-LINE SCSI BUS TERMINATOR, PDSO36 |
| DS2119ME | 9-LINE 52 ohm SCSI BUS TERMINATOR, PDSO28 |
| DS2154LN | DATACOM, FRAMER, PQFP100 |
| DS2155GN | DATACOM, FRAMER, PBGA100 |
| DS2155L | DATACOM, FRAMER, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2117MB/T&R | 制造商:Maxim Integrated Products 功能描述:IC TERM SCSI LVD/SE ULT-3 36SSOP |
| DS2117MB/T&R | 功能描述:SCSI 接口集成电路 RoHS:否 制造商:Texas Instruments 工作电源电压:2.7 V to 5.25 V 电源电流:13 mA 最大工作温度:+ 70 C 最小工作温度:0 C 安装风格:SMD/SMT 封装 / 箱体:SSOP-36 封装:Tube |
| DS2117MB/T&R/ | 功能描述:SCSI 接口集成电路 RoHS:否 制造商:Texas Instruments 工作电源电压:2.7 V to 5.25 V 电源电流:13 mA 最大工作温度:+ 70 C 最小工作温度:0 C 安装风格:SMD/SMT 封装 / 箱体:SSOP-36 封装:Tube |
| DS2117MX/T&R | 制造商:Maxim Integrated Products 功能描述:IC TERM SCSI LVD/SE ULT-3 FCHIP |
| DS2117MX/T&R | 功能描述:IC TERM SCSI LVD/SE ULT-3 FCHIP RoHS:否 类别:集成电路 (IC) >> 接口 - 信号终端器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:SCSI，SE 端子数:9 电源电压:4 V ~ 5.25 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
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