MAX4888AETI+ Maxim Integrated Products, MAX4888AETI+ Datasheet

IC SWITCH QUAD SPDT 28TQFN

MAX4888AETI+

Manufacturer Part Number
MAX4888AETI+
Description
IC SWITCH QUAD SPDT 28TQFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX4888AETI+

Function
Switch
Circuit
4 x SPDT
On-state Resistance
7 Ohm
Voltage Supply Source
Single Supply
Voltage - Supply, Single/dual (±)
1.65 V ~ 3.6 V
Current - Supply
60µA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-WFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX4888A/MAX4889A high-speed passive switches
route PCI Express
destinations. The MAX4888A is a quad single-pole/dou-
ble-throw (4 x SPDT) switch ideally suited for switching
two half lanes of PCIe data between two destinations. The
MAX4889A is an octal single-pole/double-throw (8 x
SPDT) switch ideal for switching four half lanes of PCIe
data between four destinations. The MAX4888A/
MAX4889A feature a single digital control input (SEL) to
switch signal paths.
The MAX4888A/MAX4889A are fully specified to oper-
ate from a single +3.0V to +3.6V power supply
MAX4888A is available in a 3.5mm x 5.5mm, 28-pin
TQFN package. The MAX4889A 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.
19-0770; Rev 2; 5/09
+ Denotes lead(Pb)-free/RoHS-compliant package.
* EP = Exposed paddle.
††
PCI Express is a registered trademark of PCI-SIG Corp.
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.
MAX4888AETI+
MAX4889AETO+
TOP VIEW
Contact factory if operating at +2.5V or +1.8V.
GND
GND
V+
V+
25
26
27
28
PART
24 23 22 21 20 19 18 17 16 15
1
+
2
*EP
3
________________________________________________________________ Maxim Integrated Products
4
®
MAX4888A
TQFN
(PCIe) data between two possible
5
5.0Gbps PCI Express Passive Switches
General Description
6
7
8
9 10
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
14
13
12
11
*CONNECT EXPOSED PADDLE TO GROUND.
GND
V+
GND
V+
††
. The
GND
GND
V+
V+
39
40
41
42
Ordering Information/Selector Guide
38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
1
♦ Single +3.0V to +3.6V Power-Supply Voltage
♦ Low Same-Pair Skew of 7ps
♦ Low 120µA (Max) Quiescent Current
♦ Supports PCIe Gen I and Gen || Data Rates
♦ Flow-Through Pin Configuration for Ease of
♦ Industry-Compatible Pinout
♦ Lead-Free Packaging
Typical Application Circuit appears at end of data sheet.
+
Layout
2
PIN-PACKAGE
28 TQFN-EP*
42 TQFN-EP*
*EP
3
Desktop Computers
Servers/Storage Area Networks
Laptops
4
5
6
7
MAX4889A
8
TQFN
9 10 11 12 13 14 15 16 17
Pin Configurations
CONFIGURATION
Four Half Lanes
Two Half Lanes
Applications
Features
21
20
19
18
GND
V+
GND
V+
1

Related parts for MAX4888AETI+

MAX4888AETI+ Summary of contents

Page 1

... MAX4888A is available in a 3.5mm x 5.5mm, 28-pin TQFN package. The MAX4889A 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. PART TEMP RANGE MAX4888AETI+ -40°C to +85°C MAX4889AETO+ -40°C to +85°C + Denotes lead(Pb)-free/RoHS-compliant package Exposed paddle. ...

Page 2

PCI Express Passive Switches ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND, unless otherwise noted.) V+ .............................................................................-0.3V to +4V SEL, COM__, NO__, NC__ (Note 1) .............-0.3V to (V+ + 0.3V) | COM__ - NO__ |, | COM__ - NC__ ...

Page 3

PCI Express Passive Switches ELECTRICAL CHARACTERISTICS (continued) (V+ = +3.0V to +3.6V -40°C to +85°C, unless otherwise noted. Typical values are +3.3V PARAMETER SYMBOL DYNAMIC Turn-On Time Turn-Off Time Propagation Delay Output ...

Page 4

PCI Express Passive Switches (T = +25°C, unless otherwise noted.) A ON-RESISTANCE vs. V COM_ 10 +1.8V 9.5 9.0 8 +2.5V 8.0 7.5 7.0 6 +3.3V 6.0 5.5 5.0 -0.1 0.1 0.3 0.5 ...

Page 5

PCI Express Passive Switches (T = +25°C, unless otherwise noted.) A EYE DIAGRAM (V+ = +1.8V 1.25GHz, 600mV PRBS SIGNAL 50Ω) P COM_+ 50mV/div V COM_- 50ps/div *PRBS = PSEUDORANDOM ...

Page 6

PCI Express Passive Switches PIN NAME MAX4888A MAX4889A 1, 10, 12, 14 10, 14, 17, GND 20, 25, 27 19, 21, 39 SEL 3, 9 — N. COM1 COM1- 6 ...

Page 7

PCI Express Passive Switches MAX4888A/MAX4889A +3.3V NO_ NC_ SEL GND LOGIC INPUT C INCLUDES FIXTURE AND STRAY CAPACITANCE OUT ...

Page 8

PCI Express Passive Switches MAX4888A/MAX4889A NO_ NC_+ IN+ NO_ NC_- IN- +1.5V V IN+ 50% 0V +1.5V V 50% IN PLHX +1.5V V OUT+ 50% 0V +1.5V 50% V OUT- 0V ...

Page 9

PCI Express Passive Switches +3.3V 0.1μ SEL MAX4888A/MAX4889A NC_ 50Ω GND MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH. ON-LOSS IS ...

Page 10

PCI Express Passive Switches V+ MAX4888A COM1+ COM1- COM2+ COM2- SEL GND COM__TO SEL NC__ OFF 10 ______________________________________________________________________________________ Functional Diagrams/Truth Table NC1+ COM1+ NC1- COM1- NO1+ NO1- NC2+ COM2+ COM2- NC2- NO2+ NO2- COM3+ COM3- COM__TO ...

Page 11

PCI Express Passive Switches Applications Information The MAX4888A/MAX4889A primary applications are aimed at reallocating PCIe lanes (see Figure 5). For example, in graphics applications, several manufacturers have found that it is possible to improve performance by a factor of ...

Page 12

PCI Express Passive Switches PCIe BUS LANE 0 TX LANE 1 TX LANE 2 TX LANE 3 TX LANE 0 RX LANE 1 RX LANE 2 RX LANE ______________________________________________________________________________________ Typical Application Circuit PCIe GRAPHICS INTERFACE COM1+ ...

Page 13

PCI Express Passive Switches For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 28 TQFN-EP 42 TQFN-EP ______________________________________________________________________________________ Package Information PACKAGE CODE T283555-1 T423590M-1 DOCUMENT NO. 21-0184 21-0181 13 ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products ...

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