Datasheet

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General Description

The MAX4899E/MAX4899AE analog multiplexers com-

bine the low on-capacitance (C

) and low on-resis-

tance (R

) necessary for high-performance switching

applications. These devices are designed for USB 2.0

high-speed applications at 480Mbps. The MAX4899E/

MAX4899AE also handle all the requirements for USB

low- and full-speed signaling.

The MAX4899E is a dual 3:1 multiplexer whereas the

MAX4899AE is a dual 4:1 multiplexer. The MAX4899E/

MAX4899AE feature two digital inputs, C

and C

, to con-

trol the analog signal path. Typical applications include

switching a USB connector between USB and other oper-

ations such as serial communications, audio, and video.

An enable input (EN) is provided to disable all channels

and place the device into a high-impedance (off) state,

as well as reducing power consumption.

The MAX4899E/MAX4899AE operate from a 2.7V to

3.6V power-supply voltage and are protected against

+5.5V shorts to COM

- and COM

+. In addition,

COM

+ and COM

- are normally connected to outside

circuitry and feature ±15kV ESD protection. The

MAX4899E/MAX4899AE are available in a 3mm x 3mm,

16-pin TQFN package and operate over the -40°C to

+85°C temperature range.

Applications

Cell Phones

Digital Still Cameras

PDAs

Digital Video Cameras

MPEG-4 Players

Portable GPS

Combination Products

KVM

Features

♦ Single 2.7V to 3.6V Power-Supply Voltage

♦ Low 4Ω (typ) On-Resistance (R

)

♦ -3dB Bandwidth: 425MHz

♦ Fault Tolerant to Meet Full USB 2.0 Specification

♦ COM_ Protected to ±15kV ESD Protection per

Human Body Model (MIL-STD-883; Method 3015)

♦ Low Operating Current (200µA), Ultra-Low

Quiescent Current (3.0µA max) in Standby Mode

♦ Low Threshold Eliminates the Need for

Translators in 1.8V Low Voltage Systems

♦ Tiny 16-Pin, 3mm x 3mm, Lead-Free TQFN Package

MAX4899E/MAX4899AE

USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1

Multiplexers

________________________________________________________________ Maxim Integrated Products 1

19-0616; Rev 0; 7/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

EVALUATION KIT

AVAILABLE

Ordering Information/Selector Guide

PART PIN-PACKAGE MUX CONFIGURATION TOP MARK PKG CODE

MAX4899EETE+ 16 TQFN-EP* DUAL 3:1 AEY T1633-4

MAX4899AEETE+ 16 TQFN-EP* DUAL 4:1 AEZ T1633-4

Note: All devices are specified over the -40°C to +85°C operating temperature range.

+Denotes lead-free package.

*EP = Exposed paddle.

TIME (ns)

NOTE: UI = 2.08ns

MASK = USB 2.0 HIGH SPEED

2.01.81.4 1.60.4 0.6 0.8 1.0 1.20.2

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

-0.5

COM

+ AND COM

- (V)

Eye Diagram

Pin Configurations appear at end of data sheet.

Summary of content (14 pages)

PAGE 1
KIT ATION EVALU E L B A AVAIL 19-0616; Rev 0; 7/06 USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers Features The MAX4899E/MAX4899AE analog multiplexers combine the low on-capacitance (CON) and low on-resistance (RON) necessary for high-performance switching applications. These devices are designed for USB 2.0 high-speed applications at 480Mbps. The MAX4899E/ MAX4899AE also handle all the requirements for USB low- and full-speed signaling.
PAGE 2
MAX4899E/MAX4899AE USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers ABSOLUTE MAXIMUM RATINGS (All Voltages Referenced to GND.) V+ .............................................................................-0.3V to +4V QP, EN, C0, C1, (Note 1) ..........................................-0.3V to +4V COMA+, COMA_, USB0+, USB0-, USB1+, USB1-, USB2+, USB2-, USB3+, USB3- ......................................-0.3V to +5.5V Continuous Current (COMA_ to USB_) ...........................
PAGE 3
USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers (V+ = +2.7V to +3.6V, TA = -40°C to +85°C, QP = low, EN = low, unless otherwise noted. Typical values are at V+ = +3.3V and TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SWITCH AC PERFORMANCE (Note 3) On-Loss ONLOSS f = 10MHz, 0 < VIN < 1V, Figure 1 0.
PAGE 4
Typical Operating Characteristics (V+ = 3.3V, QP = EN = low, TA = +25°C, unless otherwise noted.) V+ = 2.7V 3.4 V+ = 3.3V RON (Ω) 2.90 2.88 3.0 2.8 TA = +25°C 2.6 2.86 V+ = 3.6V 2.4 2.84 TA = -40°C 2.2 2.82 2.80 1.2 1.8 2.4 3.0 0 1.1 VCOM (V) 2.2 20 15 10 5 0 280 V+ = 3.6V 260 220 V+ = 3.3V 180 160 2.2 0.9 V+ = 2.7V VIH 0.8 VIL 0.6 0.5 0.4 0.3 0.2 120 0.1 0 -40 -15 10 35 60 85 2.7 3.0 3.3 FREQUENCY RESPONSE TOTAL HARMONIC DISTORTION PLUS NOISE vs.
PAGE 5
USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers PIN NAME MAX4899E 1 MAX4899AE 1 2 2 COMA+ 3 3 COMA- GND FUNCTION Ground Analog Switch Common D+ Terminal Analog Switch Common D- Terminal 4 4 V+ Positive Supply-Voltage Input. Connect V+ to a 2.7V to 3.6V supply voltage. Bypass V+ to GND with a 0.1µF capacitor placed as close as possible to the device. 5 5 C1 Digital Control Input 1. C1 and C0 control the analog signal path as shown in the Functional Diagrams section.
PAGE 6
USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers MAX4899E/MAX4899AE Test Circuits/Timing Diagrams V+ 0.1μF VIN V+ CHANNEL SELECT OFF-ISOLATION = 20log USB_ C0 C1 NETWORK ANALYZER 50Ω 50Ω MAX4899E MAX4899AE ON-LOSS = 20log QP VOUT EN COM_ MEAS. REF. CROSSTALK = 20log GND 50Ω 50Ω MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" USB_ TERMINAL ON EACH SWITCH.
PAGE 7
USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers MAX4899E MAX4899AE RS IN+ USB_+ COMA+ OUT+ RISE-TIME PROPAGATION DELAY = tPLHX OR tPLHY. FALL-TIME PROPAGATION DELAY = tPHLX OR tPHLY. tSK = |tPLHX - tPHLX| OR |tPHLY - tPLHY|. RL RS IN- USB_- COMA- OUTRL C0 C1 tINFALL tINRISE V+ 90% VIN+ 50% 90% 50% 10% 0V 10% V+ VIN- 50% 50% 0V tOUTRISE tPLHX tOUTFALL tPHLX V+ 90% VOUT+ 90% 50% 50% 10% 0V 10% V+ 50% VOUT- 50% 0V tPHLY tPLHY Figure 3.
PAGE 8
MAX4899E/MAX4899AE USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers Test Circuits/Timing Diagrams (continued) 5V 2.5V 3V COMA- 0V tFP tFPR tFP 3V 2.5V 1.5V USB_ 0V Figure 4. Fault-Protection Response/Recovery Time V+ V+ VCO V+ C0 VOUT USB0_ C1 MAX4899E MAX4899AE 0 CL 1000pF VOUT EN QP VCO Δ VOUT COMA _ GND VGEN Δ VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. REPEAT TEST FOR EACH SECTION. Q = Δ VOUT X CL. Figure 5.
PAGE 9
USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers V+ V+ USB0+ USB1+ USB2+ USB3+ C0 C1 V+ 0 VOUT MAX4899E MAX4899AE VEN 90% 90% VOUT COMA+ EN 50% VEN QP GND 50Ω 10pF 0 tON tOFF Figure 6. Enable Switching Times V+ VADD C0 C1 EN V+ USB0+ USB1+ USB2+ USB3+ V+ 0 VOUT MAX4899E MAX4899AE 90% 90% VOUT COMA+ QP 50% VADD GND 50Ω 10pF 0 tTRANS tTRANS Figure 7.
PAGE 10
MAX4899E/MAX4899AE USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers Detailed Description The MAX4899E/MAX4899AE analog multiplexers combine the low on-capacitance (CON) and low on-resistance (RON) necessary for high-performance switching applications. These devices are designed for USB 2.0 high-speed applications at 480Mbps. The MAX4899E/ MAX4899AE also handle all the requirements for USB low- and full-speed signaling.
PAGE 11
USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers USB0+ VBUS USB0- USB1+ AUDIO HEADPHONE D+ COMA+ USB1- MAX4899AE DCOMA- USB2+ AUXILIARY INPUT USB2- GND USB3+ USB CONNECTOR USB3- SERIAL DATA LINK Figure 8. MAX4899AE Multiplexing Four Data Types RC 1MΩ CHARGE-CURRENTLIMIT RESISTOR As with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electrostatic discharges encountered during handling and assembly.
PAGE 12
USB 2.
PAGE 13
USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers USB0- 14 MAX4899E EN 15 1 2 3 4 COMA+ COMA- V+ + GND QP 16 8 N.C. USB0+ 13 7 N.C.
PAGE 14
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) (NE - 1) X e E MARKING 12x16L QFN THIN.EPS MAX4899E/MAX4899AE USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1 Multiplexers E/2 D2/2 (ND - 1) X e AAAA D/2 e CL D D2 k CL b 0.10 M C A B E2/2 L E2 0.10 C C L C L 0.08 C A A2 A1 L L e e PACKAGE OUTLINE 8, 12, 16L THIN QFN, 3x3x0.