19-0841; Rev 0; 6/07
1000 Base-T, 1ꢀ5k ꢁED ꢂrotection LAN Ewitch
General Description
Features
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 1ꢀ5V and eꢁcellent high-fre-
quency response, ma5ing the device especially useful for
interfaces that must go to an outside connection.
♦ ESD Protection
±±15kV–Eꢀ ꢁ±ꢂꢂꢂ0-0ꢃ ꢄir0ꢅGa DiꢆcꢇGrꢈe
±ꢉ5kV–Eꢀ ꢁ±ꢂꢂꢂ0-0ꢃ ꢀontGct DiꢆcꢇGrꢈe
±±15kVꢊHuGn ꢋoꢌd ꢍoꢌeꢎ
♦ Sinꢈꢎe +3.ꢂk to +3.ꢁk Power0SHaaꢎd koꢎtGꢈe
♦ Low -Ω (tda), ꢁ.1Ω (uGx) On0ReꢆiꢆtGnce (R
)
ON
The MAX4927 offers eꢁtremely low capacitance (C ),
ON
♦ UꢎtrG0Low ꢉaF (tda) On0ꢀGaGcitGnce (ꢀ
♦ 0ꢃ3ꢌꢋ RetHrn Loꢆꢆ (±ꢂꢂꢍꢊz)
♦ 03ꢌꢋ ꢋGnꢌwiꢌtꢇ: ꢁ1ꢂꢍꢊz
)
ON
as well as low on-resistance (R ), for low-insertion
ON
loss and very wide bandwidth. In addition to the four
pairs of DPDT switches, the MAX4927 provides LED
switching for laptop computer/doc5ing station use.
♦ Oatiuizeꢌ Pin OHt for EGꢆd TrGnꢆforuer Gnꢌ PꢊY
–nterfGce
The MAX4927 is pin-to-pin equivalent to the PI3Lꢀ00-A
and STMUX1000L. The MAX4927 can replace either
device in those applications, improving ESD protection
and eliminating eꢁternal ESD components. The
MAX4927 is available in a space-saving ꢀ6-pin TQFN
pac5age and operates over the eꢁtended -40°C to
+8ꢀ°C temperature range.
♦ ꢋHiꢎt0–n LED Switcꢇeꢆ for Switcꢇinꢈ –nꢌicGtorꢆ to
Doc5inꢈ StGtion
♦ Low -1ꢂµꢄ (uGx) QHieꢆcent ꢀHrrent
♦ ꢋiꢌirectionGꢎ ꢉ to ±ꢁ ꢍHꢎtiaꢎexer/DeuHꢎtiaꢎexer
♦ StGnꢌGrꢌ Pin OHt, ꢍGtcꢇinꢈ tꢇe P±3L1ꢂꢂ0ꢄ Gnꢌ
STꢍUX±ꢂꢂꢂL
Applications
Noteboo5s and Doc5ing Stations
Servers and Routers with Ethernet Interfaces
Board-Level Redundancy Protection
SONET/SDH Signal Routing
♦ SaGce0SGvinꢈ LeGꢌ0Free PGc5Gꢈe
1ꢁ0Pin, 1uu x ±±uu, TQFN PGc5Gꢈe
T3/E3 Redundancy Protection
LVDS and LVPECL Switching
Ordering Information
ꢂin Configuration
P–N0
PꢄꢀKꢄꢅE
LED
SW–TꢀꢊES
PKꢅ
ꢀODE
PꢄRT
TOP VIEW
MAX4927ETN+
ꢀ6 TQFN-EP*
3
Tꢀ6ꢀ11-1
40 39 38 37 36 35 34 33 32 31 30 29
48 47 46 45 44 43 42 41
+Denotes lead-free package.
Note: All devices are specified over the -40°C to +85°C operating
temperature range.
GND 49
50
28 GND
27
V
DD
V
DD
2LED2 51
2LED1 52
GND 53
LED2 54
GND 55
26 1LED2
25 0LED2
24 GND
*EP = Exposed pad.
MAX4927
23 1LED1
22 0LED1
21 GND
*EP
V
DD
56
+
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20
Typical Operating Circuit and Functional Diagrams appear
at end of data sheet.
TQFN
1uu x ±±uu
*CONNECT EXPOSED PADDLE TO GND OR
LEAVE EXPOSED PADDLE UNCONNECTED.
________________________________________________________________ Maxim Integrated Products
±
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.