MAX4889BETO+ Maxim Integrated Products, MAX4889BETO+ Datasheet

IC SWITCH OCTAL SPDT 42TQFN

MAX4889BETO+

Manufacturer Part Number
MAX4889BETO+
Description
IC SWITCH OCTAL SPDT 42TQFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX4889BETO+

Function
Switch
Circuit
8 x SPDT
On-state Resistance
7 Ohm
Voltage Supply Source
Single Supply
Voltage - Supply, Single/dual (±)
1.65 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
42-WFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX4889B/MAX4889C high-speed passive switch-
es route PCI Express
ble destinations in desktop or notebook PCs. The
MAX4889B/MAX4889C are quad double-pole/double-
throw (4 x DPDT) switches ideal for switching four half
lanes of PCIe data between two destinations. The
MAX4889B/MAX4889C feature a single digital control
input (SEL) to switch signal paths.
The MAX4889C is intended for use in systems (e.g.,
SAS) where both the input and output are capacitively
coupled, and provides a 10µA (typ) source current and
a 60kΩ (typ) internal biasing resistor to GND at the
_OUT_ terminals.
The MAX4889B/MAX4889C are fully specified to oper-
ate from a single +3.3V (typ) power supply. Both
devices are available in an industry-standard 3.5mm x
9.0mm, 42-pin TQFN package. These devices operate
over the -40°C to +85°C extended temperature range.
19-4148; Rev 2; 8/10
PCI Express is a registered service mark of PCI-SIG Corporation.
SLI is a registered trademark of NVIDIA Corporation.
CrossFire is a trademark of ATI Technologies, Inc.
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.
Desktop PCs
Notebook PCs
Servers
Video Graphics Cards—SLI
(Scaled Link Interface) and CrossFire™
________________________________________________________________ Maxim Integrated Products
®
2.5/5.0/8.0Gbps PCIe Passive Switches
(PCIe) data between two possi-
General Description
*CONNECT EXPOSED PAD TO GROUND.
TOP VIEW
GND
GND
V
V
CC
CC
®
39
40
41
42
Applications
38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
1
+
2
*EP
3
4
5
6
7
MAX4889C
MAX4889B
8
TQFN
9 10 11 12 13 14 15 16 17
♦ Single +3.3V Power-Supply Voltage
♦ Support PCIe Gen I, Gen II, and Gen III Data Rates
♦ Supports SAS I, SAS II, and SAS 6.0Gbps
♦ Superior Return Loss
♦ Small 3.5mm x 9.0mm, 42-Pin TQFN Package
♦ Industry-Standard Pinouts
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Typical Operating Circuit appears at end of data sheet.
MAX4889BETO+
MAX4889CETO+
(MAX4889C)
Better than -10dB (typ) at 5.0GHz
PART
21
20
19
18
-40°C to +85°C
-40°C to +85°C
V
GND
V
GND
Ordering Information
TEMP RANGE
CC
CC
Pin Configuration
Features
PIN-PACKAGE
42 TQFN-EP*
42 TQFN-EP*
1

Related parts for MAX4889BETO+

MAX4889BETO+ Summary of contents

Page 1

... Supports SAS I, SAS II, and SAS 6.0Gbps (MAX4889C) ♦ Superior Return Loss Better than -10dB (typ) at 5.0GHz ♦ Small 3.5mm x 9.0mm, 42-Pin TQFN Package ♦ Industry-Standard Pinouts Applications PART MAX4889BETO+ MAX4889CETO+ + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. Typical Operating Circuit appears at end of data sheet MAX4889B MAX4889C ...

Page 2

PCIe Passive Switches ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND, unless otherwise noted.) V ...........................................................................-0.3V to +4V CC SEL, _IN_, _OUTA_, _OUTB_ (Note 1) .......-0. Continuous Current (AIN_ to AOUTA_/AOUTB_, BIN_ to BOUTA_/BOUTB_, CIN_ to COUTA_/COUTB_, ...

Page 3

PCIe Passive Switches ELECTRICAL CHARACTERISTICS (continued +3.3V ±10 MIN MAX, noted.) (Note 3) PARAMETER AC PERFORMANCE SEL-to-Switch Turn-On Time SEL-to-Switch Turn-Off Time Propagation Delay Output Skew Between Pairs Output Skew ...

Page 4

PCIe Passive Switches SEL V OUT THE FREQUENCY OF THE SIGNAL SHOULD BE ABOVE THE HIGHPASS FILTER CORNER OF THE COUPLING CAPACITORS. Figure 1. Switching Time 4 _______________________________________________________________________________________ Test Circuits/Timing Diagrams SOURCE MAX4889B/ MAX4889C Z S Σ SEL 50% ...

Page 5

PCIe Passive Switches Σ Σ CALp CALn OUTp OUTn V OUTp V OUTn THE FREQUENCY OF THE SIGNALS SHOULD BE APPROXIMATELY 1/20 OF THE LOWEST DATA RATE. Figure ...

Page 6

PCIe Passive Switches (V = +3.3V +25°C, unless otherwise noted ON-RESISTANCE vs. V _IN_ 8 +3. +3.3V CC 7.5 7.0 6 +3.6V CC 6.0 5.5 5.0 4.5 4.0 ...

Page 7

PCIe Passive Switches AIN+ AIN- BIN+ BIN- CIN+ CIN- DIN+ DIN- _IN_ TO _IN_ TO SEL SEL _OUTA_ _OUTB_ 0 (DEFAULT) ON OFF 1 OFF ON _______________________________________________________________________________________ Functional Diagram/Truth Table MAX4889B AOUTA+ AIN+ AOUTA- AIN- AOUTB+ ...

Page 8

PCIe Passive Switches PIN NAME MAX4889B/ MAX4889C 1 AIN+ Analog Switch 1. Common Positive Terminal. 2 AIN- Analog Switch 1. Common Negative Terminal. 3 AOUTB+ Analog Switch 1. Normally Open Positive Terminal. 4 AOUTB- Analog Switch 1. Normally Open ...

Page 9

PCIe Passive Switches Detailed Description The MAX4889B high-speed passive switch routes PCI Express (PCIe) data or other high-speed signals with amplitude of ≤ 1.2V differential, and common-mode P-P voltage close to 0V between two possible destinations. The MAX4889B is ...

Page 10

PCIe Passive Switches CHANNEL SELECT PCIe NORTH BRIDGE LANE 0 TX LANE 1 TX LANE 2 TX LANE 3 TX CHANNEL SELECT LANE 0 RX LANE 1 RX LANE 2 RX LANE ______________________________________________________________________________________ Typical Operating Circuit: ...

Page 11

PCIe Passive Switches Chip Information PROCESS: CMOS ______________________________________________________________________________________ Package Information For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package draw- ...

Page 12

... 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products ...

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