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PDF MAX4906 Data sheet ( Hoja de datos )
| Número de pieza | MAX4906 | |
| Descripción | High-/Full-Speed USB 2.0 Switches | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX4906 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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19-3797; Rev 2; 1/07
High-/Full-Speed USB 2.0 Switches
General Description
The MAX4906/MAX4906F/MAX4907/MAX4907F analog
switches combine the low on-capacitance (CON) and
low on-resistance (RON) necessary for high-perfor-
mance switching applications. These devices are
designed for USB 2.0 high-speed applications at
480Mbps. These switches will also handle all the
requirements for USB low- and full-speed signaling.
The MAX4906/MAX4906F feature two single-pole/dou-
ble-throw (SPDT) switches, and the MAX4907/
www.DMaAtaXS4h9e0e7t4FUf.ecaotmure two single-pole/single-throw switches
(SPST). The MAX4907/MAX4907F have a low 7Ω (max)
on-resistance and 7pF (max) on-capacitance. These
devices are fully specified to operate from a single
+3.0V to +3.6V power supply and are protected against
a +5.5V short to COM1 and COM2. This feature makes
them fully compliant with the USB 2.0 specification of
+5.5V fault protection. These devices feature a low
threshold voltage and a +1.4V VIH, permitting them to
be used with low-voltage logic. The MAX4906/
MAX4906F/MAX4907/MAX4907F operate at 300µA
(max) quiescent current and feature a shutdown input
to reduce the quiescent current to less than 2µA (max).
The MAX4906/MAX4906F/MAX4907/MAX4907F are avail-
able in space-saving, 2mm x 2mm µDFN packages and
operate over a -40°C to +85°C temperature range.
Applications
Cell Phones
PDAs
Digital Still Cameras
GPS
Notebook Computers
Relay Replacements
USB Switching
Ethernet Switching
Video Switching
Bus Switches
T3/E3 Switches for
Redundancy Protection
Features
♦ Fully Specified for a Single +3.0V to +3.6V
Power-Supply Voltage
♦ Low 4Ω (typ), 7Ω (max) On-Resistance (RON)
♦ MAX4907/MAX4907F Ultra-Low 4pF (typ),
7pF (max) On-Capacitance (CON)
♦ -3dB Bandwidth: 1GHz (typ)
♦ Low Bit-to-Bit Skew ≤ 100ps
♦ Shutdown Input Reduces Power Consumption
to 2µA (max)
♦ 3.3V, 1.8V, and 1.4V Logic Compatible
♦ COM_ Analog Inputs Fault Protected Against
Shorts to USB Supply Rail Up to +5.5V
♦ Space-Saving Packages
8-Pin and 10-Pin, 2mm x 2mm µDFN Packages
Ordering Information
PART
PIN-PACKAGE
PKG CODE
MAX4906ELB
10 µDFN
L1022-1
MAX4906FELB
10 µDFN
L1022-1
MAX4907ELA
8 µDFN
L822-1
MAX4907FELA
8 µDFN
L822-1
Note: All devices operate over the -40°C to +85°C operating
temperature range.
Selector Guide appears at end of data sheet.
Typical Operating Characteristics
EYE DIAGRAM
V+ =3.3V
IBIAS = 9mA
f = 240MHz
VNO1OUT
USB 2.0
HIGH SPEED
TRANSMIT
TEMPLATE
100mV/div
Pin Configurations
TOP VIEW
IN
SHDN/EN
GND
COM1
COM2
1
2
3
4
5
MAX4906
MAX4906F
10 V+
9 NC1
8 NC2
7 NO1
6 NO2
500ps/div
VNO2OUT
μDFN
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
High-/Full-Speed USB 2.0 Switches
(TA = +25°C, unless otherwise noted.)
CHARGE INJECTION vs. VCOM
10
CL = 100pF
V+ = 3.3V
8
6
www.DataS4heet4U.com
2
0
0 1.1 2.2 3.3
VCOM (V)
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
1
VIH
0.8
0.6 VIL
0.4
0.2
O
3.0
3.2 3.4
SUPPLY VOLTAGE (V)
3.6
RISE/FALL-TIME PROPAGATION DELAY
vs. SUPPLY VOLTAGE
250
240
TPLH
230
220
TPHL
210
200
3..0
3.2 3.4
SUPPLY VOLTAGE (V)
3.6
Typical Operating Characteristics (continued)
QUIESCENT SUPPLY CURRENT
vs. TEMPERATURE
160
140 V+ = 3.6V
120
100
80 V+ = 3.0V
60
40
20
0
-40
-15 10 35 60
TEMPERATURE (°C)
85
TURN-ON/OFF TIME
vs. SUPPLY VOLTAGE
50
40
tON
30
20
10 tOFF
O
3.0
3.2 3.4
SUPPLY VOLTAGE (V)
3.6
RISE/FALL-TIME PROPAGATION DELAY
vs. TEMPERATURE
250
V+ = 3V
240
TPLH
230
220 TPHL
210
200
-40
-15 10 35 60
TEMPERATURE (°C)
85
QUIESCENT SUPPLY CURRENT
vs. LOGIC LEVEL
150
V+ = 3.3V
140
130
120
110
100
0
1.1 2.2
LOGIC LEVEL (V)
TURN-ON/OFF TIME
vs. TEMPERATURE
50
V+ = 3.3V
40
tON
30
3.3
20
tOFF
10
0
-40
-15 10 35 60
TEMPERATURE (°C)
85
SAME SWITCH OUTPUT SKEW
vs. SUPPLY VOLTAGE
10
5
0
-5
-10
3.0
3.2 3.4
SUPPLY VOLTAGE (V)
3.6
_______________________________________________________________________________________ 5
5 Page 
High-/Full-Speed USB 2.0 Switches
V+ SHDN/EN
IN
NO1
www.DataSheet4U.coNmC1
NO2
NC2
MAX4906/MAX4906F
COM1
COM2
GND
MAX4906/MAX4906F
SHDN/EN
0
IN
0
NO1 NC1
NO2 NC2
OFF ON
0 1 ON OFF
1 x OFF OFF
Functional Diagram/Truth Table
V+ SHDN
MAX4907/MAX4907F
IN
NO1 COM1
NO2 COM2
GND
MAX4907/MAX4907F
SHDN
0
0
1
IN
0
1
0
COM1- NO1
COM2- NO1
OFF
ON
OFF
11
ON
Digital Control Input
The MAX4906/MAX4906F/MAX4907/MAX4907F provide
a single-digit control logic input, IN. IN controls the
position of the switches as shown in the Functional
Diagram/Truth Table. Driving IN rail-to-rail minimizes
power consumption. With a +3.0V to +3.6V supply volt-
age range, these devices are +1.4V logic compatible.
Analog Signal Levels
The on-resistance of the MAX4906/MAX4906F/
MAX4907/MAX4907F is very low and stable as the ana-
log input signals are swept from ground to V+ (see the
Typical Operating Characteristics). These switches are
bidirectional, allowing NO_, NC_, and COM_ to be con-
figured as either inputs or outputs.
Overvoltage Fault Protection
The MAX4906F and MAX4907F feature +5.5V fault pro-
tection to COM1 and COM2. Fault protection prevents
these switches from being damaged due to shorts to
the USB bus voltage rail.
Shutdown Mode
The MAX4906/MAX4906F feature a shutdown mode
that reduces the quiescent current supply to less than
2µA. Drive SHDN/EN high to place the devices in high-
impedance mode. When SHDN/EN is driven low, the
devices are normal in operation.
The MAX4907/MAX4907F feature a SHDN input that
reduces the quiescent current supply to less than 2µA.
Drive SHDN high to place the devices in low current
mode. The devices can be used in low current mode, but
with a reduced analog voltage range of 0 < VANALOG <
1.5V and reduced performance. When SHDN is driven
low, the MAX4907/MAX4907F are in normal operation.
Applications Information
USB Switching
The MAX4906/MAX4906F/MAX4907/MAX4907F analog
switches are fully compliant with the USB 2.0 specifica-
tion. The low on-resistance and low on-capacitance of
these switches make them ideal for high-performance
switching applications. The MAX4906/MAX4906F are
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAX4906.PDF ] | |
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