參數(shù)資料
型號(hào)： DS2118M
英文描述： Ultra2 LVD/SE SCSI Terminator
中文描述： Ultra3 LVD/SE SCSI端接器
文件頁(yè)數(shù)： 6/8頁(yè)
文件大?。?/td> 141K
代理商： DS2118M
DS2118M
6 of 8
PIN DESCRIPTION
Table 1
PIN
1
SYMBOL
VREF
DESCRIPTION
Reference Voltage.
2.85 volt reference; must be decoupled with a 4.7
μF cap.
No Connect.
Do not connect these pins.
Signal Termination.
Connect to SCSI bus signal lines.
2, 3
NC
RxP,
RxN
HS GND
4-7, 11-16,
22-25, 29-32
8, 10, 26,
9, 28, 27
17
Heat Sink Ground.
Internally connected to the mounting pad. Should
be grounded.
Isolation.
When pulled high, the DS2118M isolates it’s bus pins (RxP,
FxP) from the SCSI bus.
Ground.
Signal ground; 0.0 volts.
Master/slave.
Mode select for the non-controlling terminator. When
pulled high (MSTR), the DIFFSENSE driver is enabled.
DIFFSENSE.
Output to drive the SCSI bus DIFFSENS line.
DIFFSENSE CAPACITOR.
Connect 0.1 μF capacitor for
DIFFSENSE filter. Input to detect the type of device (differential or
single-ended) on the SCSI bus.
Single-ended.
SE output of DIFFSENSE receiver; indicates SE bus
operation.
Low Voltage Differential.
LVD output of DIFFSENSE receiver;
indicates LVD bus operation.
High Voltage Differential.
HVD output of DIFFSENSE receiver;
indicates HVD bus operation or thermal shutdown.
Termination Power.
Connect to the SCSI TERMPWR line and
decouple with 2.2 μF capacitor.
ISO
18
19
GND
MSTR/SLV
20
21
DIFFSENSE
DIFF_CAP
33
SE
34
LVD
35
HVD
36
TPWR
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Termpower Voltage
Logic 0
Logic 1
Operating Temperature
SYMBOL
V
tpwr
V
il
V
ih
V
amb
MIN
4.0
-0.3
2.0
0
TYP
MAX
5.50
+0.8
V
tpwr
+ 0.3
70
UNITS
V
V
V
°C
NOTES
SINGLE ENDED CHARACTERISTICS
PARAMETER
SYMBOL
Rse
MIN
104.5
TYP
110
MAX
115.5
UNITS
Ohms
NOTES
Vline=0-
3.0 volts
SE Termination Resistance
SE Voltage Reference
Vref
lose
2.79
2.93
25.4
Volts
mA
SE Output Current
Vline =
0.2 volts
guaranteed
by design
Output Capacitance
Cout
3
pF
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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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