MAX4890E：1000 Base-T, ±15kV ESD Protection LAN Switches

High-Speed Analog Switches for Gigabit Ethernet Applications that Switch the Signals from Two Interface Transformers and Connect Them to a Single Ethernet Controller

The MAX4890E/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.

Key Features

±15kV ESD Protected Per MIL-STD-883, Method 3015
Single +3.0V to +3.6V Power-Supply Voltage
Low On-Resistance (RON): 4Ω (typ), 6.5Ω (max)
Ultra-Low On-Capacitance (CON): 8pF (typ)
-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 (MAX4892E)
Low 450µA (max) Quiescent Current
Bidirectional 8 to 16 Multiplexer/Demultiplexer
Standard Pin Out, Matching the MAX4890 and MAX4892
Space-Saving Lead-Free Packages

MAX4890E, MAX4892E: Typical Operating Circuit

Applications/Uses

Board-Level Redundancy Protection
Notebooks and Docking Stations
Servers and Routers with Ethernet Interfaces
SONET/SDH Signal Routing
T3/E3 Redundancy Protection

DataSheet

title	Download file
MAX4890E-MAX4892E Data Sheet	MAX4890E-MAX4892E.pdf

Parametrics

Part Number	Protocol	Functions	Config.	Channels	Normal Position	V_SUPPLY (Single) (V)	V_SUPPLY (Single) (V)	R_ON (Ω)	Bandwidth (MHz)	t_ON (ns)	t_OFF (ns)	C_ON (pF)	C_OFF (pF)	Package/Pins	Budgetary Price
Part Number	Protocol	Functions	Config.	Channels	Normal Position	min	max	max	Bandwidth (MHz)	min	max	C_ON (pF)	C_OFF (pF)	Package/Pins	See Notes
MAX4890E	LAN	Mux	2-to-1	8	Closed	3	3.6	6.5	650	50	50	6.5	3.5	TQFN/32	$3.10 @1k
MAX4892E	LAN	Mux	2-to-1	8	Closed	3	3.6	6.5	650	50	50	6.5	3.5	TQFN/36	$3.10 @1k

Quality and Environmental Data

MAX4890E.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX4890EETJ	No Longer Available	MAX4890EETJ+	TQFN,;32 pin;26 mm²	-40°C to +85°C	No
MAX4890EETJ+	Active		TQFN,;32 pin;26 mm²	-40°C to +85°C	Lead Free
MAX4890EETJ+T	Active		TQFN,;32 pin;26 mm²	-40°C to +85°C	Lead Free
MAX4890EETJ-T	No Longer Available	MAX4890EETJ+T	QFN;	-40°C to +85°C	See data sheet