參數(shù)資料
型號(hào)： UCC5680
廠商： Benchmark Technology Group
英文描述： LVD-only Small Computer System Interface (SCSI) terminator(低壓差分小型計(jì)算機(jī)接口終端匹配器)
中文描述： 內(nèi)徑僅小型計(jì)算機(jī)系統(tǒng)接口（SCSI）終止（低壓差分小型計(jì)算機(jī)接口終端匹配器）
文件頁(yè)數(shù)： 1/7頁(yè)
文件大?。?/td> 116K
代理商： UCC5680
2
2
1
SLUS313C – MARCH 1999 - REVISED JUNE 2000
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
LVD-Only Active Termination
2.7 V to 5.25 V Operation
Differential Failsafe Bias
Built-In SPI-3 Mode Change Filter/Delay
Standards Supported: SPI-3, Ultra2
(Fast 40), Ultra3/Ultra160 (Fast 80)
description
The UCC5680 is an LVD-only Small Computer System Interface (SCSI) terminator that integrates the mode
change delay function required by the SPI-3 specification. The device senses what types of SCSI drivers are
present on the bus via the voltage on the DIFFSENS SCSI control line. Single-ended (SE) and high-voltage
differential (HVD) SCSI drivers (EIA485) are not supported. If the chip detects the presence of an SE or HVD
SCSI driver, it disconnects itself by switching all terminating resistors off the bus and enters a high-impedance
state. The terminator can also be commanded to disconnect the terminating resistors with the DISCNCT input.
Impedance is trimmed for accuracy and maximum effectiveness. Bus lines are biased to a failsafe state to
ensure signal integrity.
The UCC5680 is offered in both 24-pin and 28-pin TSSOP (PW) packages for a temperature range of 0
°
C to
70
°
C.
functional block diagram
UDG–00067
11
12
15
100 ms
TO
300 ms
DELAY/
FILTER
DIFFB
2.15 V
0.6 V
DISCNCT
10
μ
A
HIGH–VOLTAGE
DIFFERENTIAL
LOW–VOLTAGE
DIFFERENTIAL
SINGLE–ENDED
REF
1.3V
–15 mA
≤
I
SOURCE
≤
–5 mA
50
μ
A
≤
I
SINK
≤
200
μ
A
4
52
52
3
124
56 mV
– +
56 mV
+ –
25
26
L1 –
L1+
L9 –
L9+
REF
1.25V
1
REG
28
TRMPWR
14
GND
DIFSENS
52
52
124
56 mV
– +
56 mV
+ –
27
SE
LVD
HVD
DISCNCT
OPEN
DOWN
OPEN
OPEN
MODE
ALL SWITCHES
ENABLE
+
+
LVD
28-PIN PACKAGE ONLY
Copyright
2000, Texas Instruments Incorporated
$'!(*&,$(' $+ -** ', + (! )-%$,$(' ,
*(-,+ ('!(*& ,( +) $!$,$('+ ) * ,# , *&+ (! /+ '+,*-& ',+
+,'* .**',0*(-,$(' )*( ++$'" ( + '(, ' ++*$%0 $'%-
, +,$'" (! %% )*& , *+
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UCC5680PW24 功能描述:SCSI 接口集成電路 9line 3-5V SCSI Mult 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
UCC5680PW24G4 功能描述:SCSI 接口集成電路 9line 3-5V SCSI Mult 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
UCC5680PW24TR 功能描述:SCSI 接口集成電路 9 Line 2.7- 5V LVD 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
UCC5680PW24TRG4 功能描述:SCSI 接口集成電路 9 Line 2.7- 5V LVD 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
UCC5680PW28 功能描述:SCSI 接口集成電路 9line 3-5V SCSI Mult 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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