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參數(shù)資料
| 型號(hào)： | UCC5640PW28TR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Low Voltage Differential LVD SCSI 9 Line Terminator |
| 中文描述： | 低電壓差分支持LVD SCSI 9線終結(jié)者 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 171K |
| 代理商： | UCC5640PW28TR |
SLUS314C – JANUARY 2000 – REVISED JUNE 2003
1
www.ti.com
FEATURES
First LVD only Active Terminator
Meets SCSI SPI-2 Ultra2 (Fast-40), SPI-3 Ultra3
/ Ultra160 (Fast-80) and SPI-4 (Fast-160)
Ultra320 Standards
2.7-V to 5.25-V Operation
Differential Failsafe Bias
DESCRIPTION
The UCC5640 is an active terminator for low voltage
differential (LVD) SCSI networks. This LVD only design
allows the user to reach peak bus performance while
reducing system cost. The device is designed as an
active Y-terminator to improve the frequency response
of the LVD bus. Designed with a 1.5-pF channel
capacitance, the UCC5640 allows for minimal bus
loading for a maximum number of peripherals. With the
UCC5640, the designer will be able to comply with the
Fast-40 SPI-2, Fast-80 SPI-3 and Fast-160 SPI-4
specifications. The UCC5640 also provides a much
needed system migration path for ever improving SCSI
system standards. This device is available in the 24-pin
TSSOP and 28-pin TSSOP for ease of layout use.
The UCC5640 is not designed for use in single ended
(SE) or high voltage differential (HVD) systems.
BLOCK DIAGRAM
UDG–98181
REF 1.25V
15
DISCNCT
27
LVD*
1
REG
11
DIFFB
4
L1–
3
L1+
26
L9–
25
L9+
56mV
– +
SOURCE/SINK REGULATOR
REF 1.3V
1.3V
+
0.1V
0.7V > 0.5V
2.4V > 1.9V
HIGH IMPEDANCE RECEIVER
EVEN WITH POWER OFF
SINGLE
ENDED
HIGH POWER
DIFFERENTIAL
12
DIFSENS
SOURCE 5– 15mA
SINK 200
μ
A MAXIMUM (NOISE LOAD)
OPEN CIRCUIT ON POWER OFF
OR OPEN CIRCUIT IN A
DISABLED TERMINATOR MODE
10
μ
A
28
TRMPWR
124
124
52
52
52
52
14
GND
2.7V to 5.25V
56mV
+ –
56mV
+ –
56mV
– +
*28 pin package only
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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Copyright
2003, Texas Instruments Incorporated
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC5640 | Low Voltage Differential (LVD) SCSI 9 Line Terminator(低壓差分小型計(jì)算機(jī)接口9線終端匹配器) |
| UCC5641 | Low Voltage Differential LVD SCSI 9 Line Terminator |
| UCC5641 | Low Voltage Differential (LVD) SCSI 9 Line Terminator(低壓差分小型計(jì)算機(jī)系統(tǒng)接口9線終端匹配器) |
| UCC5642 | LVD-only Small Computer System Interface (SCSI) Terminator(用于低壓差分小型計(jì)算機(jī)系統(tǒng)接口的終端匹配器) |
| UCC5646 | 27 Line Active Terminator For low-voltage-Differential(27線 小型計(jì)算機(jī)系統(tǒng)終端匹配器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC5640PW28TRG4 | 功能描述:SCSI 接口集成電路 9 Line 2.7-5V LVD for Ultra2-Ultra320 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 |
| UCC5640PWX | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| UCC5641 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:Low Voltage Differential LVD SCSI 9 Line Terminator |
| UCC5641PW24 | 功能描述:SCSI 接口集成電路 9-Line 3-5V LVD SCSI 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 |
| UCC5641PW28 | 功能描述:SCSI 接口集成電路 9-Line 3-5V LVD SCSI 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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