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參數(shù)資料
| 型號(hào)： | DS21T09 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Plug and Play SCSI Terminator(即插即用SCSI終端) |
| 中文描述： | 即插即用的SCSI終結(jié)者（即插即用的SCSI終端） |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 91K |
| 代理商： | DS21T09 |
DS21T09
Plug and Play SCSI Terminator
DS21T09
PRODUCTION
063098 1/10
FEATURES
Fully compliant with SCSI–1, Fast SCSI and Ultra
SCSI
Compatible with Plug and Play SCSI Profile
Functional drop in replacement for the DS2109
Complimentary part to DS21T07 for wide SCSI
Provides active termination for 18 signal lines
2% tolerance on termination resistors and voltage
regulator
Bus termination sensing
Low power down capacitance of 3 pF
Onboard thermal shutdown circuitry
PIN ASSIGNMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
GND
R18
R17
R16
R15
R14
TCS
HS–GND
PDE
R13
R12
R11
R10
V
REF
PDI
R1
R2
R3
R4
R5
HS–GND
HS–GND
PDO
R6
R7
R8
R9
TPWR
DS21T09S 28–PIN SOIC (300 MIL)
DESCRIPTION
The DS21T09 is intended for one chip Plug and Play
(PnP) SCSI termination. Plug and Play SCSI requires
the exit–point terminator on computer motherboards or
host bus adapters to automatically switch off if an exter-
nal device is connected to the system. The DS21T09
satisfies this requirement by offering the engineer a
choice of onboard current sensing circuitry or onboard
ground detect circuitry. If an external device is con-
nected, the DS21T09 will automatically be isolated from
the SCSI bus thereby maintaining proper system
termination.
The DS21T09 integrates a low drop–out regulator, 18
precise switched 110
termination resistors, and bus
termination sensors into a 28–pin, 300 mil SOIC pack-
age. Active termination provides: greater immunity to
voltage drops on the TERMPWR (TERMination
PoWeR) line, enhanced high–level noise immunity,
intrinsic TERMPWR decoupling, and very low quies-
cent current consumption. The DS21T09 contains an
output port that can control the power down pin of addi-
tional terminators (DS21T07) for Wide SCSI applica-
tions.
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| DS21T16 | SCSI Terminator(SCSI終端) |
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| DS2227 | Flexible NV SRAM Stik(靈活的非易失性SRAM) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS21T09S | 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:Plug and Play SCSI Terminator |
| DS21T09S/T&R | 制造商:Maxim Integrated Products 功能描述:IC TERMINATOR SCSI P&P 28-SOIC |
| DS21T09S/T&R | 功能描述:IC TERMINATOR SCSI P&P 28-SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> 接口 - 信號(hào)終端器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類(lèi)型:SCSI，SE 端子數(shù):9 電源電壓:4 V ~ 5.25 V 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:管件 |
| DS21T09S+ | 功能描述:SCSI 接口集成電路 RoHS:否 制造商:Texas Instruments 工作電源電壓:2.7 V to 5.25 V 電源電流:13 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| DS21T11 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Terminator |
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