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PDF MAX4999 Data sheet ( Hoja de datos )
| Número de pieza | MAX4999 | |
| Descripción | USB 2.0 Hi-Speed Differential 8:1 Multiplexer | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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MAX4999
USB 2.0 Hi-Speed Differential
8:1 Multiplexer
General Description
The MAX4999 differential Hi-Speed USB analog multi-
plexer features low on-capacitance (CON) switching,
making it an ideal solution for the USB server/mass
storage market. The MAX4999 is designed for USB 2.0
low-/full-/Hi-Speed applications with capability of sup-
porting data rates up to 480Mbps.
The MAX4999 is a differential 8:1 multiplexer. The
MAX4999 features three digital inputs to control the sig-
nal path. Typical applications include switching a USB
connector between eight USB hosts and a USB device.
An enable input (EN) is provided to disable all channels
and place the device into a high-impedance state
(standby mode), shutting off the charge pump for mini-
mum power consumption.
The MAX4999 operates from a +3.0V to +3.6V power-
supply voltage and is specified over the -40°C to +85°C
extended temperature range. The MAX4999 is available
in a 5mm x 5mm, 32-pin TQFN package.
Applications
Keyboard, Video, Mouse (KVM)
Servers/RAID
Mass Storage
Workstations
Benefits and Features
• Increased Flexibility and Performance
• Multiplexer Supports USB 2.0 Standard
• -3dB Bandwidth: 1200MHz (typ)
• Low On-Resistance and Power Management
Features Minimize System Losses
• 6.5Ω (typ) On-Resistance (RON)
• Single +3.0V to +3.6V Power-Supply Voltage
• Enable Input Puts All Channels in High-Impedance
State (Standby Mode)
• Low Operating Current (1µA) and Ultra-Low
Quiescent Current (30nA) in Standby Mode
• Reduce Component Count and Design Complexity
• Low Threshold Eliminates the Need for Translators
in 1.8V Low-Voltage Systems
• Saves Board Space
• 32-Pin, 5mm x 5mm, TQFN Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX4999ETJ+
-40°C to +85°C
32 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Pin Configuration
TOP VIEW
24 23 22 21 20 19 18 17
D5_1 25
16 D2_1
D5_0 26
15 D2_0
GND 27
14 GND
D6_1 28
D6_0 29
MAX4999
13 D1_1
12 D1_0
GND 30
D7_1 31
11 GND
*EP 10 D0_1
D7_0 32
9 D0_0
1 2345678
TQFN
5mm x 5mm
*CONNECT EXPOSED PAD TO GND.
19-4127; Rev 2; 3/15
1 page  
MAX4999
USB 2.0 Hi-Speed Differential
8:1 Multiplexer
Electrical CharacteristicsTest Circuits/Timing Diagrams (continued)
VCC 0.1μF
CHANNEL
SELECT
HIGH
V+
C0 D_ _ _
C1
C2
MAX4999
EN COM_
GND
NETWORK
ANALYZER
VIN 50Ω 50Ω
VOUT
MEAS.
REF.
50Ω 50Ω
VOUT
OFF-ISOLATION = 20log VIN
ON-LOSS = 20log VOUT
VIN
VOUT
CROSSTALK = 20log
VIN
MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" USB_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" USB_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE USB_ CHANNEL TO ANOTHER USB_ CHANNEL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
Figure 3. Off-Isolation, On-Loss, and Crosstalk
www.maximintegrated.com
Maxim Integrated | 5
5 Page 
MAX4999
USB 2.0 Hi-Speed Differential
8:1 Multiplexer
Revision History
REVISION
NUMBER
0
1
2
REVISION
DATE
5/08
6/11
3/15
DESCRIPTION
Initial release
Added Package Thermal Characteristics; renamed pins in Figure 4; changed pin
references in Electrical Characteristics, Figures 3 and 5, TOCs, and Functional
Diagram.
Updated Benefits and Features section
PAGES
CHANGED
—
2, 5, 6, 8, 9
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2015 Maxim Integrated Products, Inc. | 11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet MAX4999.PDF ] | |
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