UC5603 用于 SCSI 和快速 SCSI 的 9 线路 5V SE 端接器

The UC5603 provides 9 lines of active termination for a SCSI (Small Computers Systems Interface) parallel bus. The SCSI standard recommends active termination at both ends of the cable segment.

The UC5603 provides a disconnect feature which, when opened or driven high, will disconnect all terminating resistors, and disables the regulator; greatly reducing standby power. The output channels remain high impedance even without Termpwr applied. A low channel capacitance of 6 pF allows units at interim points of the bus to have little to no effect on the signal integrity.

Functionally the UC5603 is similar to its predecessor, the UC5601 – 18 line Active Terminator. Several electrical enhancements were incorporated in the UC5603, such as a sink/source regulator output stage to accommodate all signal lines at 5 V, while the regulator remains at its nominal value, reduced channel capacitance to 6 pF typical, and as with the UC5601, custom power packages are utilized to allow normal operation at full power conditions

	UC5603
Number of Lines	9
Driver Types Supported	SE
TERMPWR Voltage(Min)(V)	4
TERMPWR Voltage(Max)(V)	5.25
Disconnect Active State	High
Process	Bi-Polar
Channel Capacitance(pF)	6
Resistor Tolerance(ppm)	50
Typical Sink Current(mA)	400
Current Tolerance(%)	3
Single-Ended Termination Impedance(ohms)	110
Single-Ended Tolerance(%)	3
Operating Temperature Range(C)	0 to 70
Pin/Package	16SOIC

UC5603 特性

• Complies with SCSI, SCSI–2 and SPI–2 Standards
• 6-pF Channel Capacitance during Disconnect
• 100-uA Supply Current in Disconnect Mode
• Meets SCSI Hot Plugging
• –400-mA Sourcing Current for Termination
• +400-mA Sinking Current for Active Negation Drivers
• Logic Command Disconnects all Termination Lines
• Trimmed Termination Current to 3%
• Trimmed Impedance to 3%
• Negative Clamping on all Signal Lines
• Current Limit and Thermal Shutdown Protection

UC5603 芯片订购指南

器件	状态	温度	价格	封装 | 引脚	封装数量 | 封装载体	丝印标记
UC5603DP	ACTIVE	0 to 70	2.85 | 1ku	SOIC (D) | 16	40 | TUBE
UC5603DPG4	ACTIVE	0 to 70	2.85 | 1ku	SOIC (D) | 16	40 | TUBE
UC5603DPR	NRND	0 to 70		SOIC (D) | 16
UC5603DPRTR	NRND	0 to 70		SOIC (D) | 16
UC5603DPTR	ACTIVE	0 to 70	2.55 | 1ku	SOIC (D) | 16	2500 | LARGE T&R
UC5603DPTRG4	ACTIVE	0 to 70	2.55 | 1ku	SOIC (D) | 16	2500 | LARGE T&R

UC5603 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
UC5603DP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UC5603DP	UC5603DP
UC5603DPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UC5603DPG4	UC5603DPG4
UC5603DPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UC5603DPR	UC5603DPR
UC5603DPRTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UC5603DPRTR	UC5603DPRTR
UC5603DPTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UC5603DPTR	UC5603DPTR
UC5603DPTRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	UC5603DPTRG4	UC5603DPTRG4

UC5603 应用技术支持与电子电路设计开发资源下载

1. UC5603 数据资料 dataSheet 下载.PDF
2. TI 德州仪器SCSI 终端和收发器选型与价格 . xls
3. 所选封装材料的热学和电学性质 (PDF 645 KB)
4. 使用数字隔离器设计隔离式 I2C 总线接口 (zhct119.PDF, 339 KB)
5. 1Q 2011 Issue Analog Applications Journal (slyt399.PDF, 964 KB)
6. 接口选择指南 (Rev. D) (PDF 2994 KB)
7. Signaling Rate vs. Distance for Differential Buffers (PDF 420 KB)
8. Q1 2009 Issue Analog Applications Journal (slyt319.PDF, 1.39 MB)
9. Isolated RS-485 Reference Design (PDF 80 KB)
10. 无铅组件涂层的保存期评估 (PDF 1305 KB)
11. Analog Signal Chain Guide (8.62 MB)
12. Industrial Interface IC Solutions (101 KB)

UC5603 工具和软件

培训内容	型号	软件/工具类型
UC5603 评估模块	UC5603EVM	开发电路板/EVM