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參數(shù)資料
| 型號(hào)： | DS2127+T&R |
| 廠(chǎng)商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC TERM SCSI LVD/SE 48-LQFP |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 類(lèi)型： | SCSI，LVD，SE |
| 端子數(shù)： | 14 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應(yīng)商設(shè)備封裝： | 48-LQFP（7x7） |
| 包裝： | 帶卷 (TR) |
General Description
The DS2127 Ultra3 LVD/SE SCSI terminator provides
low-voltage differential (LVD)/single-ended (SE) termi-
nations for 14 SCSI lines. Through the voltage on the
DIFF_CAP pin, the device detects the types of drivers
on the bus. If the device is connected in an LVD-only
bus, the DS2127 provides LVD termination. If any sin-
gle-ended devices are connected to the bus, the
DS2127 uses SE termination. If any high-voltage differ-
ential (HVD) devices are connected to the bus, the
DS2127 isolates itself from the SCSI bus. The mode
change has a built-in delay that is determined by an
integrated SPI-3 mode change filter/delay. The termi-
nating resistors can also be disconnected from the bus
by asserting the ISO pin.
For the LVD termination, the DS2127 provides 14 pre-
cisely trimmed resistors. Each resistor is biased with
two current sources to a fail-safe state. For SE termina-
tion, the DS2127 provides 14 precision 110
resistors
and one regulator for active-negation bias.
Applications
SCSI Array Backplane
SCSI Cables
Features
Fully Compliant with Ultra2, Ultra3, Ultra160, and
Ultra320 SCSI Standards
Provides LVD/SE Termination for 14 Signal Pairs
Auto-Selection of LVD or SE Termination
5% Tolerance on SE and LVD Termination
Resistance
Low 3pF Power-Down Capacitance
Built-In Mode-Change Filter/Delay
On-Board Thermal-Shutdown Circuitry
SCSI Bus Hot-Plug Compatible
Fully Supports Actively Negated SE SCSI Signals
DS2127
Ultra3 LVD/SE SCSI 14-Line Terminator
______________________________________________ Maxim Integrated Products
1
R13N
R13P
R12N
R12P
R11N
R11P
R10N
R10P
R9N
R9P
R8N
R8P
R2P
R2N
R3P
R3N
R4P
R4N
R5P
R5N
R6P
R6N
R7P
R7N
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
LQFP
GND
SE
LVD
HS_GND
DIFF_CAP
DIFFSENS
ISO
25
26
27
28
29
30
31
32
33
34
35
36
12
11
10
9
8
7
6
5
4
3
2
1
R1N
R1P
V
REF
HS_GND
TPWR
R14N
R14P
DS2127
TOP VIEW
Pin Configuration
Ordering Information
Rev 2; 1/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART*
VOLTAGE
(V)
PIN-PACKAGE
TOP
MARK**
DS2127
3.3
48 LQFP
DS2127
DS2127+
3.3
48 LQFP
DS2127
DS2127/T&R
3.3
48 LQFP/Tape
and Reel
DS2127
DS2127+T&R
3.3
48 LQFP/Tape
and Reel
DS2127
+Denotes a lead-free/RoHS-compliant package.
*All devices rated over the 0°C to +70°C commercial tempera-
ture range.
**The top mark includes a "+" on lead-free packages.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2129 | 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:LVD SCSI 27-Line Regulator |
| DS2129S | 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 |
| DS2129S/R | 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:LVD SCSI 27-Line Regulator |
| DS2129S/T | 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:LVD SCSI 27-Line Regulator |
| DS2129S/T&R | 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 |
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