MAX14983E：Enhanced 1:2 VGA Mux with Monitor Detection and Priority Port Logic

Innovative Design Allows for New Monitor Selection to Operate Autonomously

The MAX14983E integrates high-bandwidth analog switches, level-translating buffers, and 5V power switches to implement a complete 1:2 multiplexer for VGA monitors. The device switches graphics signals between a controller and two outputs. Integrated pullup resistors (2.2kΩ typ) are provided on the monitor-side display data channel (DDC) signal lines. The device features a simple power interface that operates with a single +5V supply input. Two integrated power switches with current limiting and reverse-current protection pass the +5V supply to external loads with minimal voltage drop. The horizontal and vertical synchronization (HSYNC/VSYNC) buffers shift logic levels to support +2.5V to +5.0V CMOS or TTL-compatible graphics controllers while meeting the VESA drive capability requirement of ±8mA. An internal 2.5V regulator translates the DDC voltage levels to be compatible with low-voltage graphics controllers. The device also features monitor-detect outputs and enable inputs that allow monitor switching to operate either automatically or with inputs from the graphics controller. The MAX14983E is available in a 32-pin (5mm x 5mm) TQFN package, and is specified over the -40°C to +85°C extended temperature range.

Key Features

Design Flexibility
- Graphics Controller Port is Protected when VCC = 0V
- DDC Switches Limit Voltage to Low-Voltage Supply
- Internal +2.5V Regulator
High Level of Integration for Enhanced Performance
- Low 5.5pF (typ) RGB Capacitance
- 2.0ns (typ) tR/tF with 10pF, 2.2kΩ Load on Monitor-Side SYNC Signals
- Source and Sink 8mA While Meeting Speed Requirements
- ±11kV Human Body Model (HBM)
Saves Space on Board
- Internal Power Switches
  - Pass +5V with 300mV (max) IR Drop
  - Short-Circuit/Thermal/Reverse-Current Protection
- 5mm x 5mm, 32-Pin TQFN Package

MAX14983E: Typical Operating Circuit

Applications/Uses

Computing
Graphics Cards
KVM Switches
Servers

DataSheet

title	Download file
MAX14983E Data Sheet	MAX14983E.pdf

Parametrics

Part Number	Protocol	Functions	Config.	Channels	V_SUPPLY (Single) (V)	V_SUPPLY (Single) (V)	R_ON (Ω)	Bandwidth (MHz)	t_ON (ns)	t_OFF (ns)	C_ON (pF)	Package/Pins	Budgetary Price
Part Number	Protocol	Functions	Config.	Channels	min	max	max	Bandwidth (MHz)	min	max	C_ON (pF)	Package/Pins	See Notes
MAX14983E	VGA	Mux Switch	1-to-2	2	5	5	25	800	1000	1000	5.5	TQFN/32	$2.46 @1k

Design kits & evaluation modules

MAX14983EEVKIT

Quality and Environmental Data

MAX14983E.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX14983EETJ+	Active		TQFN,;32 pin;26 mm²	-40°C to +85°C	Lead Free
MAX14983EETJ+T	Active		TQFN,;32 pin;26 mm²	-40°C to +85°C	Lead Free

MAX14983E.pdf MAX14983E