Datasheet > UCC5621MWP

UCC5621MWP

更新时间： 2024-09-20 21:15:15

品牌	Logo	应用领域
德州仪器 - TI		信息通信管理光电二极管接口集成电路
页数	文件大小	规格书
4页	153K
描述
27-LINE 110ohm SCSI BUS TERMINATOR, PDSO44

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中文翻译

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技术参数
数据手册
替代型号

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UCC5621MWP 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SSOP
包装说明：	GREEN, SSOP-44	针数：	44
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	1 week
风险等级：	5.8	Is Samacsys：	N
差分输出：	NO	接口集成电路类型：	SCSI BUS TERMINATOR
JESD-30 代码：	R-PDSO-G44	JESD-609代码：	e4
长度：	17.905 mm	湿度敏感等级：	1
功能数量：	1	信号线数量：	27
端子数量：	44	最高工作温度：	70 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装等效代码：	SOP44,.4,32
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	电源：	5 V
标称上拉电阻：	110 Ω	认证状态：	Not Qualified
座面最大高度：	2.64 mm	子类别：	Bus Terminators
最大供电电压：	7 V	最小供电电压：	4 V
标称供电电压：	4.75 V	表面贴装：	YES
技术：	BICMOS	温度等级：	COMMERCIAL
端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)	端子形式：	GULL WING
端子节距：	0.8 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	7.5 mm
Base Number Matches：	1

UCC5621MWP 数据手册

UCC5621

27 - Line SCSI Terminator With Split Reverse Disconnect

FEATURES

DESCRIPTION

• Complies with SCSI, SCSI-2, SCSI-3, UCC5621 provides 27 lines of active termination for a SCSI (Small Com-

SPI and FAST-20 (Ultra) Standards

puter Systems Interface) parallel bus. The SCSI standard recommends ac-

tive termination at both ends of the cable.

• 2.5pF Channel Capacitance During

Disconnect

The UCC5621 is ideal for high performance 5V SCSI systems. During dis-

connect the supply current is typically only 100 A, which makes the IC at-

tractive for lower powered systems.

• 100 A Supply Current in Disconnect

Mode

The UCC5621 features a split reverse disconnect allowing the user to con-

trol termination lines 10 to 27 with disconnect one, DISCNCT1, and control

terminiation lines 1 to 9 with disconnect two, DISCNCT2.

• 4V To 7V Operation

• 110 Termination

The UCC5621 is designed with a low channel capacitance of 2.5pF, which

eliminates effects on signal integrity from disconnected terminators at in-

terim points on the bus.

• Completely Meets SCSI Hot Plugging

• –900mA Sourcing Current for

Termination

The power amplifier output stage allows the UCC5621 to source full termi-

nation current and sink active negation current when all termination lines

are actively negated.

• +500mA Sinking Current for Active

Negation

• Logic Command Disconnects all

The UCC5621, as with all Unitrode terminators, is completely hot plugga-

ble and appears as high impedance at the teminating channels with

VTRMPWR = 0V or open.

Termination Lines

• Split Reverse Controls Lines 1 to 9

and 10 to 27 Separately

Internal circuit trimming is utilized, first to trim the 110 impedance, and

then most importantly, to trim the output current as close to the maximum

SCSI-3 specification as possible, which maximizes noise margin in FAST-

20 SCSI operation.

• Trimmed Impedance to 5%

• Current Limit and Thermal Shutdown

Protection

(continued)

BLOCK DIAGRAM

UDG-96111

Circuit Design Patented

SLUS310A - OCTOBER 1998 - REVISED APRIL 2002

12 3 4

中文翻译

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UCC5621MWP 替代型号

型号	品牌	替代类型	描述	数据表
UCC5621MWPTRG4	TI	功能相似	IC 27-LINE 110 ohm SCSI BUS TERMINATOR, PDSO44, SSOP-44, Bus Terminator
LX5121CDB	MICROSEMI	功能相似	ULTRA 27-LINE, PLUG AND PLAY SCSI TERMINATOR

与UCC5621MWP相关器件

型号	品牌	获取价格	描述	数据表
UCC5621MWPTR	TI	获取价格	27-LINE 110ohm SCSI BUS TERMINATOR, PDSO44, SSOP-44
UCC5621MWPTRG4	TI	获取价格	IC 27-LINE 110 ohm SCSI BUS TERMINATOR, PDSO44, SSOP-44, Bus Terminator
UCC5622	TI	获取价格	27 - Line SCSI Terminator With Split Disconnect
UCC5622_15	TI	获取价格	27 - Line SCSI Terminator With Split Disconnect
UCC5622FQP	TI	获取价格	27 - Line SCSI Terminator With Split Disconnect
UCC5622FQPTR	TI	获取价格	27-Line 5V SE Terminator for Fast and Ultra SCSI with Dual Disconnect 48-LQFP 0 to 70
UCC5622MWP	TI	获取价格	27 - Line SCSI Terminator With Split Disconnect
UCC5622MWPG4	TI	获取价格	IC 27-LINE 110 ohm SCSI BUS TERMINATOR, PDSO44, GREEN, PLASTIC, SSOP-44, Bus Terminator
UCC5622MWPTR	TI	获取价格	27 - Line SCSI Terminator With Split Disconnect
UCC5628	TI	获取价格	Multimode SCSI 14 Line Terminator

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