參數(shù)資料
型號： DS2118M
廠商： DALLAS SEMICONDUCTOR
元件分類： Bus Terminator
英文描述： 9-LINE SCSI BUS TERMINATOR, PDSO36
封裝： SSOP-36
文件頁數(shù)： 6/8頁
文件大?。?/td> 141K
代理商： DS2118M
DS2118M
6 of 8
PIN DESCRIPTION Table 1
PIN
SYMBOL
DESCRIPTION
1VREF
Reference Voltage. 2.85 volt reference; must be decoupled with a 4.7
F cap.
2, 3
NC
No Connect. Do not connect these pins.
4-7, 11-16,
22-25, 29-32
RxP,
RxN
Signal Termination. Connect to SCSI bus signal lines.
8, 10, 26,
9, 28, 27
HS GND
Heat Sink Ground. Internally connected to the mounting pad. Should
be grounded.
17
ISO
Isolation. When pulled high, the DS2118M isolates it’s bus pins (RxP,
FxP) from the SCSI bus.
18
GND
Ground. Signal ground; 0.0 volts.
19
MSTR/SLV
Master/slave. Mode select for the non-controlling terminator. When
pulled high (MSTR), the DIFFSENSE driver is enabled.
20
DIFFSENSE
DIFFSENSE. Output to drive the SCSI bus DIFFSENS line.
21
DIFF_CAP
DIFFSENSE CAPACITOR. Connect 0.1 F capacitor for
DIFFSENSE filter. Input to detect the type of device (differential or
single-ended) on the SCSI bus.
33
SE
Single-ended. SE output of DIFFSENSE receiver; indicates SE bus
operation.
34
LVD
Low Voltage Differential. LVD output of DIFFSENSE receiver;
indicates LVD bus operation.
35
HVD
High Voltage Differential. HVD output of DIFFSENSE receiver;
indicates HVD bus operation or thermal shutdown.
36
TPWR
Termination Power. Connect to the SCSI TERMPWR line and
decouple with 2.2 F capacitor.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Termpower Voltage
Vtpwr
4.0
5.50
V
Logic 0
Vil
-0.3
+0.8
V
Logic 1
Vih
2.0
Vtpwr + 0.3
V
Operating Temperature
Vamb
070
°C
SINGLE ENDED CHARACTERISTICS
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
SE Termination Resistance
Rse
104.5
110
115.5
Ohms
Vline=0-
3.0 volts
SE Voltage Reference
Vref
2.79
2.93
Volts
SE Output Current
lose
25.4
mA
Vline =
0.2 volts
Output Capacitance
Cout
3
pF
guaranteed
by design
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2118MB 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
DS2118MB/T&R 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC TERM SCSI LVD/SE ULT-3 36SSOP
DS2118MB/T&R 功能描述:SCSI 接口集成電路 Ultra3 LVD/SE SCSI Terminator 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
DS2118MB/T,R 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Ultra3 LVD/SE SCSI Terminator
DS2118MB+ 功能描述:SCSI 接口集成電路 Ultra3 LVD/SE SCSI Terminator 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
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