MAX4927 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – 1000 Base-T, ±15kV ESD Protection LAN Switch

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 (C_ON),
as well as low on-resistance (R_ON), 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 (R_ON)
♦ Ultra-Low 8pF (typ) On-Capacitance (C_ON)
♦ -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.