DS2108中文资料差分SCSI可切换端接器数据手册ADI规格书

描述 Description

The DS2108 integrates 18 330-ohm and nine 150-ohm precisely switched resistors for terminating nine high-voltage differential (HVC) SCSI pairs of lines and includes a power-down feature. The power-down can be switched via software, which is simpler than opening the box to switch it manually. The 24-pin SOIC saves board space for space-critical applications.
SCSI termination is used wherever data must be transmitted without voltage drops caused by signal reflection at the parallel bus termination point, which is often significant in multidropped systems.
All Dallas terminators feature power-down mode with extremely low-quiescent consumption. Different SCSI terminators are available to match every existing SCSI protocol and to address different design concerns, such as price, board space, and voltage differential.

特性 Features

• Fully compliant with SCSI-1, -2, and -3 and EIA RS-485
• Differential termination for nine pairs of signal lines
• Laser-trimmed 330- and 150-ohm resistors with ±5% tolerance over full temperature range
• Switchable power-down with low 6pF capacitance
• Operating ranges:
• -7V to +12V
• 0°C to +70°C

简介

DS2108属于集成电路（IC）的信号端接器。由制造生产的DS2108信号端接器信号端接器用于向信号路径提供电气端点，以防止信号反射回电路而引起干扰。类型有电缆、DDCA、SCSI、HVD、SE、LVD、串行和 USB，端接数量为 1、2、6、8、9、14、15、18 或 27。