Maxim /MAX4889A User Manual download pdf

General Description

The MAX4888/MAX4889 high-speed passive switches

route PCI Express

(PCIe) data between two possible

destinations. The MAX4888 is a quad single-pole/double-

throw (4 x SPDT) switch ideally suited for switching two

half lanes of PCIe data between two destinations. The

MAX4889 is an octal single-pole/double-throw (8 x SPDT)

switch ideal for switching four half lanes of PCIe data

between four destinations. The MAX4888/MAX4889 fea-

ture a single digital control input (SEL) to switch signal

paths.

The MAX4888/MAX4889 are fully specified to operate

from a single 3.0V to 3.6V power supply and also oper-

ate down to +1.65V. The MAX4888 is available

in a 3.5mm x 5.5mm, 28-pin TQFN package. The

MAX4889 is available in a 3.5mm x 9.0mm, 42-pin TQFN

package. Both devices operate over the -40°C to +85°C

temperature range.

Applications

Desktop Computers

Servers/Storage Area Networks

Laptops

Features

o Single 1.65V to 3.6V Power-Supply Voltage

o Low Same-Pair Skew of 7ps

o Low 120µA (Max) Quiescent Current

o Supports PCIe Gen I Data Rates

o Flow-Through Pin Configuration for Ease of

Layout

o Industry-Compatible Pinout

o Lead-Free Packaging

MAX4888/MAX4889

2.5Gbps PCI Express Passive Switches

________________________________________________________________

Maxim Integrated Products

MAX4888

TOP VIEW

TQFN

V+

GND

*EP

V+

GND

V+

GND

V+

GND

12345678910

24 23 22 21 20 19 18 17 16 15

GND

N.C.

V+

COM2-

COM2+

COM1-

COM1+

N.C.

SEL

GND

NO2-

NO2+

NO1-

NO1+

V+

GND

NC2-

NC2+

NC1-

NC1+

MAX4889

TQFN

V+

GND

V+

GND

V+

GND

V+

GND

1234567891011121314151617

38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22

COM3-

V+

GND

COM4+

COM4-

GND

COM3+

GND

SEL

V+

COM2-

COM2+

V+

GND

COM1-

COM1+

GND

NC4+

NC4-

NO3+

NO3-

NO4+

NO4-

NC3-

NC3+

V+

NO2-

NO2+

NO1-

NO1+

NC2-

NC2+

NC1-

NC1+

*CONNECT EXPOSED PADDLE TO GROUND.

*EP

Pin Configurations

Ordering Information/

Selector Guide

19-0724; Rev 0; 5/07

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim's website at www.maxim-ic.com.

Note: All devices are specified over the -40°C to +85°C operat-

ing temperature range.

Denotes lead-free package.

EP = Exposed paddle.

PART

PIN-

PACKAGE

CONFIGURATION

PKG

CODE

MAX4888ETI+

28 TQFN-EP*

Two

Half Lanes

T283555-1

MAX4889ETO+

42 TQFN-EP*

Four Half

Lanes

T423590M-1

Typical Application Circuit appears at end of data sheet.

PCI Express is a registered trademark of PCI-Sig Corp.

1 2 3 4 5 6 ... 15 16

MAX4888/MAX4889 1

Summary of Contents

Page 1 - MAX4888/MAX4889

General DescriptionThe MAX4888/MAX4889 high-speed passive switchesroute PCI Express®(PCIe) data between two possibledestinations. The MAX4888 is a qua

Page 2

MAX4888/MAX48892.5Gbps PCI Express Passive Switches10 ______________________________________________________________________________________Functional

Page 3

MAX4888/MAX48892.5Gbps PCI Express Passive Switches______________________________________________________________________________________ 11Applicatio

Page 4

MAX4888/MAX48892.5Gbps PCI Express Passive Switches12 ______________________________________________________________________________________Typical Ap

Page 5

MAX4888/MAX4889Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package o

Page 6

MAX4888/MAX48892.5Gbps PCI Express Passive Switches14 ______________________________________________________________________________________Package In

Page 7

MAX4888/MAX48892.5Gbps PCI Express Passive Switches______________________________________________________________________________________ 15Package In

Page 8

MAX4888/MAX48892.5Gbps PCI Express Passive SwitchesMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied

Page 9

MAX4888/MAX48892.5Gbps PCI Express Passive Switches2 _______________________________________________________________________________________ABSOLUTE M

Page 10

MAX4888/MAX48892.5Gbps PCI Express Passive Switches_______________________________________________________________________________________ 3Note 2: Al

Page 11

MAX4888/MAX48892.5Gbps PCI Express Passive Switches4 _______________________________________________________________________________________Typical Op

Page 12

MAX4888/MAX48892.5Gbps PCI Express Passive Switches_______________________________________________________________________________________5Typical Ope

Page 13

MAX4888/MAX48892.5Gbps PCI Express Passive Switches6 _______________________________________________________________________________________Pin Descri

Page 14

MAX4888/MAX4889tr < 5nstf < 5ns50%VILLOGICINPUTVN_ = VNO_ OR VNC_RLCOM_GNDSELCL INCLUDES FIXTURE AND STRAY CAPACITANCE.VOUT = VN_ ( RL

Page 15

MAX4888/MAX48892.5Gbps PCI Express Passive Switches8 _______________________________________________________________________________________Test Circu

Page 16

MAX4888/MAX48892.5Gbps PCI Express Passive Switches_______________________________________________________________________________________ 9Detailed D

Maxim /MAX4889A User Manual

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