UCC5680 具有 SPI-3 模式更改延迟的 9 线路 2.7-5V LVD 终端，用于 Ultra2 至 Ultra320 SCSI
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.
|
UCC5680 |
| Number of Lines |
9 |
| Driver Types Supported |
LVD |
| TERMPWR Voltage(Min)(V) |
2.7 |
| TERMPWR Voltage(Max)(V) |
5.25 |
| Disconnect Active State |
High |
| Process |
Bi-CMOS |
| Channel Capacitance(pF) |
3 |
| Resistor Tolerance(ppm) |
500 |
| LVD Termination Impedance(ohms) |
105 |
| LVD Tolerance(%) |
5 |
| Common mode Impedance(ohms) |
150 |
| Operating Temperature Range(C) |
0 to 70 |
| Pin/Package |
24TSSOP, 28TSSOP |
UCC5680 特性
- 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-2, SPI-3, SPI-4, Ultra2 (Fast 40), Ultra3/Ultra160 (Fast 80) and Ultra320 (Fast 160)
UCC5680 芯片订购指南
UCC5680 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| UCC5680PW24 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
UCC5680PW24 |
UCC5680PW24 |
| UCC5680PW24G4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
UCC5680PW24G4 |
UCC5680PW24G4 |
| UCC5680PW28 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
UCC5680PW28 |
UCC5680PW28 |
| UCC5680PW28G4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
UCC5680PW28G4 |
UCC5680PW28G4 |
| UCC5680PW28TR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
UCC5680PW28TR |
UCC5680PW28TR |
| UCC5680PW28TRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
UCC5680PW28TRG4 |
UCC5680PW28TRG4 |
UCC5680 应用技术支持与电子电路设计开发资源下载
- UCC5680 数据资料 dataSheet 下载.PDF
- TI 德州仪器SCSI 终端和收发器选型与价格 . xls
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 使用数字隔离器设计隔离式 I2C 总线接口 (zhct119.PDF, 339 KB)
- 1Q 2011 Issue Analog Applications Journal (slyt399.PDF, 964 KB)
- 接口选择指南 (Rev. D) (PDF 2994 KB)
- Signaling Rate vs. Distance for Differential Buffers (PDF 420 KB)
- Q1 2009 Issue Analog Applications Journal (slyt319.PDF, 1.39 MB)
- Isolated RS-485 Reference Design (PDF 80 KB)
- 无铅组件涂层的保存期评估 (PDF 1305 KB)
- Analog Signal Chain Guide (8.62 MB)
- Industrial Interface IC Solutions (101 KB)
UCC5680 工具和软件