參數(shù)資料
型號: DS2109
英文描述: Plug and Play SCSI Terminator
中文描述: 即插即用的SCSI終結(jié)者
文件頁數(shù): 3/10頁
文件大?。?/td> 85K
代理商: DS2109
DS2109
022698 3/10
The DS2109 consists of 3 major functional blocks,
Figure 2:
Voltage reference, terminating resistors, and isolation
switches
Bus current sensing circuitry
Bus ground sensing circuity
When the Bus Ground Sensing Circuitry or Bus Current
Sensing Circuitry determine that the SCSI bus is prop-
erly terminated without the DS2109, the power down
buffer isolates the resistors from the SCSI bus and dis-
ables the power amp, thereby placing the DS2109 in a
low power mode (the bus sensing circuitry always stays
active). The PDO (Power Down Output) pin can be con-
nected to the pin of a DS21S07A SCSI terminator for
Wide SCSI configurations, Figure 8.
DS2109 BLOCK DIAGRAM
Figure 2
V
REF
+
TCS
R14
R18
R1
110 OHMS
110 OHMS
110 OHMS
BANDGAP
REFERENCE
DOWN
BUFFER
BUS CURRENT
SENSING
BUS GROUND
SENSING
PDI
PDE
PDO
DISABLE
DISABLE
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DS2109S-T 制造商:Maxim Integrated Products 功能描述: