Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsLinear IC - Video editing Video switcher TQFN 20 (4x4)

General Description

The MAX4929E low-frequency 2:1 switch is ideal for

HDMI™/DVI™ switching applications. The device fea-

tures a voltage clamp function to protect low-voltage

systems at the output. The MAX4929E operates with a

single 5V supply or dual or triple supplies. The

MAX4929E provides clamping and voltage translation

without additional components. All external inputs/out-

puts are electrostatic-discharge (ESD)-protected to

±6kV Human Body Model (HBM).

The MAX4929E is available in 20-pin QSOP and 20-pin,

4mm x 4mm, TQFN packages. The device is specified

for the extended -40°C to +85°C operating temperature

range.

Applications

HD Television Receivers

HD Monitors

High-Resolution Computer Monitors

Features

♦ DDC Switches

Low 20pF (typ) Capacitance

♦ Protects EDID (Extended Display Identification

Data) EPROM or MCU from Excess Voltage

♦ Hot-Plug Detect Signal

Translates MCU Voltage to TTL Levels

♦ Two Devices Can Be Used to Form a 4:1 Switch

No Added Active Components Needed

♦ ±6kV ESD Protection HBM on All External I/Os

♦ Available in Lead-Free, 20-Pin TQFN or 20-Pin QSOP

Packages

MAX4929E

HDMI 2:1 Low-Frequency Translating Switch

________________________________________________________________

Maxim Integrated Products

Ordering Information

HIZ1

HIZ2

CLP

SCLO

SDAO

HPDHPIRO SEL

V+

+5V

MCU

EDID

EPROM

2kΩ

HPIR1

SCL1

SDA1

HPDO1

TMDS1

HPIR2

SCL2

SDA2

HPDO2

TMDS1

GND

SEL

HPIRO

HPD

HDMI1

HDMI2

2kΩ

+3.3V TO +5V

+2V to +3.3V

0.1μF

MAX4929E

0.1μF

EXESD

0.1μF

Typical Operating Circuit

19-0860; Rev 0; 10/07

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.

Denotes a lead-free package

EP = Exposed paddle.

PART TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX4929EEEP+ -40°C to +85°C 20 QSOP E20-1

MAX4929EETP+ -40°C to +85°C 20 TQFN-EP* T2044-3

Pin Configurations continued at end of data sheet.

SCL2

SDA1

SDA2

HPD

SDAO

SCLO

HIZ2

1 2

EXESD

15 14 12 11

HPDO2

HPIR2

*EP

CLP

V+

SCL1

MAX4929E

HPDO1

HPIRO

GND

SEL

HIZ1

TQFN

(4mm x 4mm)

TOP VIEW

*EXPOSED PADDLE CONNECTED TO GND OR LEAVE EP UNCONNECTED

HPIR1

Pin Configurations

HDMI is a trademark of HDMI Licensing, LLC.

DVI is a trademark of Digital Display Working Group (DDWG).

Summary of content (13 pages)

PAGE 1
9-0860; Rev 0; 10/07 HDMI 2:1 Low-Frequency Translating Switch The MAX4929E low-frequency 2:1 switch is ideal for HDMI™/DVI™ switching applications. The device features a voltage clamp function to protect low-voltage systems at the output. The MAX4929E operates with a single 5V supply or dual or triple supplies. The MAX4929E provides clamping and voltage translation without additional components. All external inputs/outputs are electrostatic-discharge (ESD)-protected to ±6kV Human Body Model (HBM).
PAGE 2
MAX4929E HDMI 2:1 Low-Frequency Translating Switch ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND, unless otherwise noted.) V+ ............................................................................-0.3V to +6V All Pins (except GND) .............................................-0.3V to +6V Continuous Current into Any I/O Terminal .........................25mA Continuous Power Dissipation (TA = +70°C) 20-Pin QSOP (derate 9.1mW/°C above +70°C) ..........727mW 20-Pin TQFN (derate 16.
PAGE 3
HDMI 2:1 Low-Frequency Translating Switch (V+ = +5V ±10%, CLP = VL = +3.3V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.8 V LOGIC INPUT (SEL, HPD, HIZ1, HIZ2) Input Logic-Low Voltage VIL V+ = 4.5V, VL = CLP = 3V Input Logic-High Voltage VIH V+ = 5.5V, VL = CLP = 3.6V Hysteresis VHYST Input Logic-Leakage Current 2.0 3V ≤ VL = CLP ≤ 3.6V V 150 IINL 0.01 mV 1 µA 0.5 V 0.
PAGE 4
HDMI 2:1 Low-Frequency Translating Switch MAX4929E Test Circuits/Timing Diagrams 0.1μF +5V +3.3V V+ MAX4929E SDAO/SCLO VL 0.1μF CLP SEL CAPACITANCE METER SDA_/ SCL_ f = 1MHz VIL OR VIH VL HIZ1 HIZ2 GND Figure 1. Channel Off-/On-Capacitance +3.3V +5V 0.1μF 0.
PAGE 5
HDMI 2:1 Low-Frequency Translating Switch ON-RESISTANCE vs. VSCLO ON-RESISTANCE vs. TEMPERATURE 8 V+ = 5V V+ = 4.5V 4 2 10 8 V+ = 5V V+ = 4.5V 6 4 2 0 0 0 0.5 1.0 1.5 10 35 TEMPERATURE (°C) SUPPLY CURRENT vs. TEMPERATURE ON-LEAKAGE CURRENT vs. TEMPERATURE 0.6 0.4 40 ON-LEAKAGE CURRENT (nA) MAX4929E toc03 0.8 -40 -15 60 85 MAX4929E toc04 VSCLO (V) 1.
PAGE 6
HDMI 2:1 Low-Frequency Translating Switch MAX4929E Pin Description PIN 6 NAME FUNCTION QSOP TQFN 1 19 HPDO2 Hot-Plug Detect Output 2. Translate logic level of HPD to V+ compatible (see Table 2). 2 20 HPIR2 Hot-Plug Interrupt Request 2 3 1 SDA2 Serial Data Input. SDA Mux Input 2. 4 2 SCL2 Serial Clock Input. SCL Mux Input 2. 5 3 HPDO1 Hot-Plug Detect Output 1. Translate logic level of HPD to V+ compatible (see Table 2).
PAGE 7
HDMI 2:1 Low-Frequency Translating Switch MAX4929E SDA1 SDAO SDA2 SCL1 SCLO SCL2 HPIR1 HPIR2 HPDO1 HPDO2 HPD LOGIC (V+) SEL HPD HPIRO HPD LOGIC (VL) HIZ1 HIZ2 EXESD V+ Detailed Description The MAX4929E low-frequency 2:1 switch is ideal for the low-frequency portion of HDMI/DVI switching applications. The device features three independent voltage inputs that allow the user to match any voltage level encountered in switching without additional components. The V+ range is from 4.5V to 5.
PAGE 8
MAX4929E HDMI 2:1 Low-Frequency Translating Switch Table 1. Inputs Selection for 2:1 Mux Truth Table INPUTS Table 4.
PAGE 9
HDMI 2:1 Low-Frequency Translating Switch PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) Ir Hot Plug The MAX4929E is designed for HDMI/DVI switching. The MAX4929E permits hot-plugging to any inputs/ outputs regardless of the power status of the device. A plug can be inserted, and thus connected to the MAX4929E whether the device is powered up or not. Therefore, sequencing of power supplies is not required; V+, CLP, and VL can be applied in any order. AMPERES 36.
PAGE 10
HDMI 2:1 Low-Frequency Translating Switch MAX4929E Pin Configurations (continued) Chip Information PROCESS: BiCMOS TOP VIEW HPDO2 1 20 EXESD HPIR2 2 19 GND SDA2 3 18 HIZ1 SCL2 4 MAX4929E HPDO1 5 17 HIZ2 16 HPD HPIR1 6 15 HPIRO SDA1 7 14 SDAO SCL1 8 13 SCLO V+ 9 12 SEL CLP 10 11 VL QSOP 10 ______________________________________________________________________________________
PAGE 11
HDMI 2:1 Low-Frequency Translating Switch 24L QFN THIN.EPS ______________________________________________________________________________________ 11 MAX4929E Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.
PAGE 12
MAX4929E HDMI 2:1 Low-Frequency Translating Switch Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.
PAGE 13
HDMI 2:1 Low-Frequency Translating Switch QSOP.EPS Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.