Maxim MAX4888A Specifications

19-0770; Rev 2; 5/09
5.0Gbps PCI Express Passive Switches

General Description

The MAX4888A/MAX4889A high-speed passive switches
®
route PCI Express (PCIe) data between two possible
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.
PART
MAX4888AETI+
MAX4889AETO+
+ Denotes lead(Pb)-free/RoHS-compliant package.
* EP = Exposed paddle.
††
Contact factory if operating at +2.5V or +1.8V.
PCI Express is a registered trademark of PCI-SIG Corp.
TOP VIEW
24 23 22 21 20 19 18 17 16 15
25
GND
26
V+
MAX4888A
GND 27
*EP
V+ 28
+
1 2 3 4 5 6
TQFN
________________________________________________________________ Maxim Integrated Products
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.
††
. The
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
14 GND
13 V+
12 GND
11 V+
7 8 9 10
*CONNECT EXPOSED PADDLE TO GROUND.
♦ 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
Layout
♦ Industry-Compatible Pinout
♦ Lead-Free Packaging
Desktop Computers
Servers/Storage Area Networks
Laptops
Ordering Information/Selector Guide
PIN-PACKAGE
28 TQFN-EP*
42 TQFN-EP*
Typical Application Circuit appears at end of data sheet.
38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
39
GND
V+ 40
MAX4889A
GND 41
*EP
V+ 42
+
1 2 3 4 5 6 7
Features
Applications
CONFIGURATION
Two Half Lanes
Four Half Lanes
Pin Configurations
8 9 10 11 12 13 14 15 16 17
TQFN
GND
21
V+
20
19 GND
18 V+
1