MAX4885：Complete VGA 1:2 or 2:1 Multiplexer _ BDTIC a Leading Distributor in China

MAX4885：Complete VGA 1:2 or 2:1 Multiplexer

The MAX4885 integrates high-bandwidth analog switches and level translating buffers to implement a complete 1:2 or 2:1 multiplexer for VGA signals. The device provides switching for RGB, display data channel (DDC), and horizontal and vertical synchronization (HSYNC, VSYNC) signals. A low-noise charge pump with internal capacitors provides a boosted gate-drive voltage to improve performance of the RGB switches. In the 1:2 multiplexer mode, HSYNC/VSYNC inputs feature level-shifting buffers to support low voltage CMOS or standard TTL-compatible graphics controllers. In the 2:1 multiplexer mode, the output buffers for the HSYNC/VSYNC inputs are disabled, allowing bidirectional signaling. In both modes, DDC signals are voltage-clamped to an external voltage to provide level translation and protection. The MAX4885 features a 5µA shutdown mode and is ESD protected to ±8kV human body model (HBM) on externally routed pins. The MAX4885 is specified over the extended (-40°C to +85°C) temperature range, and is available in the 32-pin, 5mm x 5mm TQFN package.

Key Features

+5V Single-Supply Operation
Programmable Voltage Clamp for Open-Drain DDC Signals
Low 5Ω (typ) On-Resistance (R, G, B Signals)
Low 13pF (typ) On-Capacitance (R, G, B Signals)
Break-Before-Make Switching Protects Against Circuit Shorts
Low 300µA Supply Current (Lower than 1µA with Charge Pump Disabled)
Space-Saving, Lead-Free 32-Pin (5mm x 5mm) TQFN Package

MAX4885: Typical Operating Circuit

Applications/Uses

Notebook Computers
Servers

DataSheet

title	Download file
MAX4885 Data Sheet	MAX4885.pdf

Parametrics

Part Number	Protocol	Functions	Config.	Channels	V_SUPPLY (Single) (V)	V_SUPPLY (Single) (V)	R_ON (Ω)	Bandwidth (MHz)	I_L(OFF) (nA)	t_ON (ns)	t_OFF (ns)	Q_INJECTION (pC)	C_ON (pF)	C_OFF (pF)	Package/Pins	Budgetary Price
Part Number	Protocol	Functions	Config.	Channels	min	max	max	Bandwidth (MHz)	max	min	max	Q_INJECTION (pC)	C_ON (pF)	C_OFF (pF)	Package/Pins	See Notes
MAX4885	VGA	Mux	2-to-1	7	4.5	5.5	10	350	1000	7000	100	10	17	5	TQFN/32	$1.53 @1k

Design kits & evaluation modules

MAX4885EVKIT

Quality and Environmental Data

MAX4885.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX4885ETJ	No Longer Available	MAX4885ETJ+	TQFN,;32 pin;26 mm²	-40°C to +85°C	No
MAX4885ETJ+	Active		TQFN,;32 pin;26 mm²	-40°C to +85°C	Lead Free
MAX4885ETJ+T	Active		TQFN,;32 pin;26 mm²	-40°C to +85°C	Lead Free
MAX4885ETJ-T	No Longer Available	MAX4885ETJ+T	QFN;32 pin	-40°C to +85°C	See data sheet

MAX4885.pdf MAX4885

VGA 8:1 Multiplexer Reference Design Using the MAX4885 MAX4885

MAX4885.pdf MAX4885