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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX4927 Datasheet

ESD Protection LAN Switch

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19-0841; Rev 0; 6/07
1000 Base-T, ±15kV ESD Protection LAN Switch
General Description
The MAX4927 meets the needs of high-speed differen-
tial switching, including that of Gigabit Ethernet
(10/100/1000) Base-T switching as well as LVDS and
LVPECL switching. The MAX4927 provides enhanced
ESD protection up to ±15kV and excellent high-fre-
quency response, making the device especially useful for
interfaces that must go to an outside connection.
The MAX4927 offers extremely low capacitance (CON),
as well as low on-resistance (RON), for low-insertion
loss and very wide bandwidth. In addition to the four
pairs of DPDT switches, the MAX4927 provides LED
switching for laptop computer/docking station use.
The MAX4927 is pin-to-pin equivalent to the PI3L500-A
and STMUX1000L. The MAX4927 can replace either
device in those applications, improving ESD protection
and eliminating external ESD components. The
MAX4927 is available in a space-saving 56-pin TQFN
package and operates over the extended -40°C to
+85°C temperature range.
Applications
Notebooks and Docking Stations
Servers and Routers with Ethernet Interfaces
Board-Level Redundancy Protection
SONET/SDH Signal Routing
T3/E3 Redundancy Protection
LVDS and LVPECL Switching
Pin Configuration
TOP VIEW
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
GND 49
VDD 50
2LED2 51
2LED1 52
GND 53
LED2 54
GND 55
VDD 56
+
MAX4927
28 GND
27 VDD
26 1LED2
25 0LED2
24 GND
23 1LED1
22 0LED1
*EP 21 GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
*CONNECT EXPOSED PADDLE TO GND OR
LEAVE EXPOSED PADDLE UNCONNECTED.
TQFN
5mm x 11mm
Features
ESD Protection
±15kV–IEC 61000-4-2 Air-Gap Discharge
±8kV–IEC 61000-4-2 Contact Discharge
±15kV–Human Body Model
Single +3.0V to +3.6V Power-Supply Voltage
Low 4Ω (typ), 6.5Ω (max) On-Resistance (RON)
Ultra-Low 8pF (typ) On-Capacitance (CON)
-23dB Return Loss (100MHz)
-3dB Bandwidth: 650MHz
Optimized Pin Out for Easy Transformer and PHY
Interface
Built-In LED Switches for Switching Indicators to
Docking Station
Low 450µA (max) Quiescent Current
Bidirectional 8 to 16 Multiplexer/Demultiplexer
Standard Pin Out, Matching the P13L500-A and
STMUX1000L
Space-Saving Lead-Free Package
56-Pin, 5mm x 11mm, TQFN Package
Ordering Information
PART
PIN-
PACKAGE
LED
SWITCHES
PKG
CODE
MAX4927ETN+ 56 TQFN-EP* 3 T56511-1
+Denotes lead-free package.
Note: All devices are specified over the -40°C to +85°C operating
temperature range.
*EP = Exposed pad.
Typical Operating Circuit and Functional Diagrams appear
at end of data sheet.
________________________________________________________________ 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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX4927 Datasheet

ESD Protection LAN Switch

No Preview Available !

1000 Base-T, ±15kV ESD Protection LAN Switch
ABSOLUTE MAXIMUM RATINGS
VDD………………………………………………………-0.3V to +4V
All Other Pins…………………………………-0.3V to (VDD + 0.3V)
Continuous Current (A_ to _B_) ......................................±120mA
Continuous Current (LED_ to _LED_) .…………………… ±40mA
Peak Current (A_ to _B_)
(pulsed at 1ms, 10% duty cycle) ……………………. ±240mA
Current into Any Other Pin................................................±20mA
Continuous Power Dissipation (TA = +70°C)
56-Pin TQFN (derate 40.9mW/°C above +70°C) .......5278mW
Operating Temperature Range …………………. -40°C to +85°C
Junction Temperature.……………………………………. +150°C
Storage Temperature Range .…………………. -65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = +3V to +3.6V, TA = TJ = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = 3.3V, TA = +25°C.) (Note 1)
PARAMETER
ANALOG SWITCH
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
On-Resistance
RON
VDD = 3V,
IA_ = -40mA,
VA_ = 0, 1.5V, 3V
TA = +25°C
TMIN to TMAX
4 5.5
Ω
6.5
On-Resistance Match
Between Switch Pairs
(Note 2)
On-Resistance Flatness
On-Resistance LED Switches
Off-Leakage Current
On-Leakage Current
ESD PROTECTION
ESD Protection
SWITCH AC PERFORMANCE
Insertion Loss
Return Loss
Crosstalk
ΔRON
VDD = 3V,
IA_ = -40mA,
VA_ = 0, 1.5V, 3V
TA = +25°C
TMIN to TMAX
RFLAT(ON)
RONLED
ILA_(OFF)
VDD = 3V, IA_ = -40mA, VA_ = 1.5V, 3V
VDD = 3V, I_LED_ = -40mA, VLED_ = 0, 1.5V, 3V
VDD = 3.6V, VA_ = 0.3V, 3.3V;
V_B1 or V_B2 = 3.3V, 0.3V
ILA_(ON)
VDD = 3.6V, VA_ = 0.3V, 3.3V;
V_B1 or V_B2 = 0.3V, 3.3V, or floating
-1
-1
IEC 61000-4-2 Air-Gap Discharge
IEC 61000-4-2 Contact Discharge
Human Body Model (spec MIL-STD-883,
Method 3015)
ILOS
RLOS
VCT1
VCT2
RS = RL = 50Ω, unbalanced, f = 1MHz
(Note 2)
f = 100MHz
Any switch to any
switch; RS = RL =
50Ω, unbalanced,
Figure 1
f = 25MHz
f = 100MHz
0.5 1.5
2
0.01
40
+1
+1
±15
±8
±15
0.6
-23
-50
-26
Ω
Ω
Ω
µA
µA
kV
dB
dB
dB
2 _______________________________________________________________________________________


Part Number MAX4927
Description ESD Protection LAN Switch
Maker Maxim Integrated Products
Total Page 13 Pages
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