Datasheet > S-2057A-12

S-2057A-12

更新时间： 2024-11-01 19:33:15

品牌	Logo	应用领域
AMCC		电信光电二极管电信集成电路
页数	文件大小	规格书
9页	98K
描述
Telecom Circuit, 1-Func, Bipolar, PDSO20, 4.40 X 6.50 MM, 0.90 MM HEIGHT, TSSOP-20

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S-2057A-12 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	TSSOP	包装说明：	TSSOP, TSSOP20,.25
针数：	20	Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01	风险等级：	5.92
JESD-30 代码：	R-PDSO-G20	JESD-609代码：	e0
长度：	6.5 mm	功能数量：	1
端子数量：	20	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：	TSSOP	封装等效代码：	TSSOP20,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：	3.3 V	认证状态：	Not Qualified
座面最大高度：	1.2 mm	子类别：	Other Telecom ICs
最大压摆率：	70 mA	标称供电电压：	3.3 V
表面贴装：	YES	技术：	BIPOLAR
电信集成电路类型：	TELECOM CIRCUIT	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
宽度：	4.4 mm	Base Number Matches：	1

S-2057A-12 数据手册

DEVICE

SPECIFICATION

S2057

PORT BYPASS CIRCUIT FOR FIBRE CHANNEL AND GIGABIT ETHERNET

devices in the loop. Normal mode is enabled by setting

theSELpinACTIVE, whichincludesthediskintheloop

via the DDI/DDO ports. When the disk drive is either

absent or non-functional, Bypass mode is selected by

setting the SEL pin INACTIVE. This routes data directly

from IN to OUT, bypassing the disk ports. Direct attach

Fibre Channel Disk Drives have an “LRC Interlock”

signal designed to directly control the select function.

Table 1 is a truth table describing the data flow through

the S2057.

FEATURES

• Supports ANSI X3T11 1.0625 Gbps FCALdisk

attach

• ANSI x3T11 Fibre Channel Compatible

• IEEE 802.3z Gigabit Ethernet Compatible

• 1250 Mbps (Gigabit Ethernet) operation

• Fully differential for minimum deterministic

jitter accumulation (10 ps nominal)

• TTL Bypass Select

Jitter Performance

• High speed LVPECL I/O

• 0.2 W Typical power dissipation

• 3.3 V power supply

The primary AC parameter of importance is determinis-

tic jitter accumulation (data eye degradation) inserted

by the port bypass circuit. The S2057 utilizes high

bandwidth, low skew differential circuitry to provide

symmetric rise and fall times and excellent noise immu-

nity. This results in a nominal deterministic jitter accu-

mulation of ±10 ps.

• 20-pin TSSOP

GENERAL DESCRIPTION

The S2057 is a single channel Port Bypass Circuit

(PBC), designed to minimize jitter accumulation by

providing a high bandwidth fully differential data path.

Primary application is in Fibre Channel Arbitrated Loop

(FC-AL) disk arrays to allow hot swapping of FC-AL

drives. The S2057 is designed to support 1.0625 Gbps

and 1.25 Gbps data rates.

For arrays of disk drives greater than 4, it is recom-

mended that the S2057 be cascaded with the S2058

(Port Bypass with repeater) in a ratio of 4:1 to perform

clock and data retiming. This insures optimal jitter

performance for the disk array system.

TheS2057isahighspeed2:1multiplexerwith2modes

of operation: Normal and Bypass. A block diagram is

shown in Figure 1, and a system diagram showing the

S2057 in a single loop of a disk array is shown in Figure 2.

A disk drive connects on the Disk Drive input and output

ports (DDIP/N, DDOP/N), while the INP/N and OUTP/

N ports connect to the upstream and downstream

Table 1. Truth Table

SEL1

OUT

DDO

DDI

Figure 1. S2057 Block Diagram

DDO P/N

DDI P/N

SEL

IN P/N

OUT P/N

PBC

August 8, 2000 / Revision C

12 3 4 5 6 7...9

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与S-2057A-12相关器件

型号	品牌	获取价格	描述	数据表
S2058	AMCC	获取价格	Telecom Circuit, PDSO28,
S2058A	AMCC	获取价格	SPECIALTY TELECOM CIRCUIT, PDSO28, SOIC-28
S-2058-A	AMCC	获取价格	Telecom Circuit, 1-Func, PDSO28, SOIC-28
S2-05E	CYNERGY3	获取价格	Axial style reed relay
S2-05EU	CYNERGY3	获取价格	UL Approved Axial Style Reed Relay
S2-05P	CYNERGY3	获取价格	Axial style reed relay
S2-05PU	CYNERGY3	获取价格	UL Approved Axial Style Reed Relay
S205R	MINMAX	获取价格	2W, Low Cost DIP, Single & Dual Output DC/DC Converters
S2060	AMCC	获取价格	GPON Transceiver With CDR
S2060	MICROSEMI	获取价格	Silicon Power Rectifier

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