MAX4888 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – 2.5Gbps PCI Express Passive Switches

19-0724; Rev 0; 5/07
2.5Gbps PCI Express Passive Switches
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
PCI Express is a registered trademark of PCI-Sig Corp.
Features
♦ Single 1.65V to 3.6V Power-Supply Voltage
♦ Low Same-Pair Skew of 7ps
♦ Low 120µA (Max) Quiescent Current
♦ Supports PCIe Gen I Data Rates
♦ Flow-Through Pin Configuration for Ease of
Layout
♦ Industry-Compatible Pinout
♦ Lead-Free Packaging
Ordering Information/
Selector Guide
PART
PIN-
PACKAGE
CONFIGURATION
PKG
CODE
MAX4888ETI+ 28 TQFN-EP*
Two
Half Lanes
T283555-1
MAX4889ETO+ 42 TQFN-EP*
Four Half
Lanes
T423590M-1
Note: All devices are specified over the -40°C to +85°C operat-
ing temperature range.
+Denotes lead-free package.
*EP = Exposed paddle.
Typical Application Circuit appears at end of data sheet.
TOP VIEW
Pin Configurations
24 23 22 21 20 19 18 17 16 15
GND 25
V+ 26
GND 27
V+ 28
*EP
+
MAX4888
14 GND
13 V+
12 GND
11 V+
1 2 3 4 5 6 7 8 9 10
38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
GND 39
21 GND
V+ 40
GND 41
V+ 42 ^*EP
+
MAX4889
20 V+
19 GND
18 V+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
TQFN
*CONNECT EXPOSED PADDLE TO GROUND.
TQFN
________________________________________________________________ Maxim Integrated Products 1
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.