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PDF MAX4892E Data sheet ( Hoja de datos )
| Número de pieza | MAX4892E | |
| Descripción | (MAX4890E / MAX4892E) ESD Protection LAN Switches | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX4892E (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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19-0624; Rev 0; 8/06
1000 Base-T, ±15kV ESD Protection LAN Switches
General Description
www.dTahtaeshMeeAt4Xu4.8co9m0E/MAX4892E meet the needs of high-speed
differential switching. The devices handle the needs of
Gigabit Ethernet (10/100/1000) Base-T switching as
well as LVDS and LVPECL switching. The MAX4890E/
MAX4892E provide enhanced ESD protection up to
±15kV, and excellent high-frequency response, making
the devices especially useful for interfaces that must go to
an outside connection.
Both devices provide extremely low capacitance
(CON), as well as low resistance (RON), for low-insertion
loss and very wide bandwidth. In addition to the four
pairs of DPDT switches, the MAX4892E provides LED
switching for laptop computer/docking station use.
The MAX4890E/MAX4892E are pin-for-pin equivalents
to the MAX4890/MAX4892 and can replace these
devices for those applications requiring the enhanced
ESD protection. Both devices are available in space-
saving TQFN packages and operate over the standard
-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 Configurations
TOP VIEW
A1
A2
A3
LED0
0LED1
0LED2
A4
A5
A6
1
2
3
4
5
6
7
8
9
MAX4892E
*EP
27 SEL
26 2B1
25 3B1
24 2B2
23 3B2
22 4B1
21 5B1
20 4B2
19 5B2
Features
o ±15kV ESD Protected Per MIL-STD-883, Method
3015
o Single +3.0V to +3.6V Power-Supply Voltage
o Low On-Resistance (RON): 4Ω (typ), 6.5Ω (max)
o Ultra-Low On-Capacitance (CON): 8pF (typ)
o -23dB Return Loss (100MHz)
o -3dB Bandwidth: 650MHz
o Optimized Pin Out for Easy Transformer and PHY
Interface
o Built-In LED Switches for Switching Indicators to
Docking Station (MAX4892E)
o Low 450µA (max) Quiescent Current
o Bidirectional 8 to 16 Multiplexer/Demultiplexer
o Standard Pin Out, Matching the MAX4890 and
MAX4892
o Space-Saving Lead-Free Packages
32-Pin, 5mm x 5mm, TQFN Package
36-Pin, 6mm x 6mm, TQFN Package
Ordering Information
PART
PIN-
PACKAGE
LED
SWITCHES
PKG
CODE
MAX4890EETJ+ 32 TQFN-EP* — T-3255-4
MAX4892EETX+ 36 TQFN-EP* 3 T-3666-3
+Denotes lead-free package.
Note: All devices are specified over the -40°C to +85°C operating
temperature range.
*EP = Exposed pad.
Eye Diagram
CH2: 4B2, 100mV/div
TQFN
*EXPOSED PAD CONNECTED TO GND.
Pin Configurations continued at end of data sheet.
CH1: 5B2, 100mV/div
f = 125MHz
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/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
1000 Base-T ±15kV ESD Protection LAN Switch
www.datasheet4u.com
PIN
MAX4892E MAX4890E
1 32
21
32
4—
5—
6—
77
88
99
10 10
11 11
12 —
13 —
14 —
15 13
16 14
17 15
18 16
19 17
20 18
21 19
22 20
23 21
24 22
25 23
26 24
27 29
28 25
29 26
30 27
31 28
32 —
33 —
34 —
35 30
36 31
— 3-6, 12
——
Pin Description
NAME
A1
A2
A3
LED0
0LED1
0LED2
A4
A5
A6
A7
GND
LED1
1LED1
1LED2
7B2
6B2
7B1
6B1
5B2
4B2
5B1
4B1
3B2
2B2
3B1
2B1
SEL
1B2
0B2
1B1
0B1
2LED2
2LED1
LED2
V+
A0
N.C.
EP
FUNCTION
Differential PHY Interface Pair. Connect to the Ethernet PHY.
Differential PHY Interface Pair. Connect to the Ethernet PHY.
Differential PHY Interface Pair. Connect to the Ethernet PHY.
LED0 Input
0LED1 Output. Drive SEL low (SEL = 0) to connect LED0 to 0LED1.
0LED2 Output. Drive SEL high (SEL = 1) to connect LED0 to 0LED2.
Differential PHY Interface Pair. Connect to the Ethernet PHY.
Differential PHY Interface Pair. Connect to the Ethernet PHY.
Differential PHY Interface Pair. Connect to the Ethernet PHY.
Differential PHY Interface Pair. Connect to the Ethernet PHY.
Ground
LED1 Input
1LED1 Output. Drive SEL low (SEL = 0) to connect LED1 to 1LED1.
1LED2 Output. Drive SEL high (SEL = 1) to connect LED1 to 1LED2.
B2 Differential Pair
B2 Differential Pair
B1 Differential Pair
B1 Differential Pair
B2 Differential Pair
B2 Differential Pair
B1 Differential Pair
B1 Differential Pair
B2 Differential Pair
B2 Differential Pair
B1 Differential Pair
B1 Differential Pair
Select Input. SEL selects switch connection. See the Truth Table (Table1).
B2 Differential Pair
B2 Differential Pair
B1 Differential Pair
B1 Differential Pair
2LED2 Output. Drive SEL high (SEL = 1) to connect LED2 to 2LED2.
2LED1 Output. Drive SEL low (SEL = 0) to connect LED2 to 2LED1.
LED2 Input
Positive-Supply Voltage Input. Bypass to GND with a 0.1µF ceramic capacitor.
Differential PHY Interface Pair. Connect to the Ethernet PHY.
No Connection. Not internally connected.
Exposed Pad. Connect exposed pad to GND or leave it unconnected.
_______________________________________________________________________________________ 5
5 Page 
1000 Base-T, ±15kV ESD Protection LAN Switches
Pin Configurations (continued)
www.datasheet4u.com
TOP VIEW
32 31 30 29 28 27 26 25
A2 1
A3 2
N.C. 3
N.C. 4
N.C. 5
N.C. 6
A4 7
A5 8
MAX4890E
*EP
24 2B1
23 3B1
22 2B2
21 3B2
20 4B1
19 5B1
18 4B2
17 5B2
9 10 11 12 13 14 15 16
TQFN
*EXPOSED PADDLE CONNECTED TO GND.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MAX4892E.PDF ] | |
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