MAX3845UCQ+D Maxim Integrated Products, MAX3845UCQ+D Datasheet

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MAX3845UCQ+D

Manufacturer Part Number
MAX3845UCQ+D
Description
IC SW/CBL DRVR DVI/HDMI 100TQFP
Manufacturer
Maxim Integrated Products
Type
HDMI/DVI Switchr
Datasheet
1.MAX3845UCQTD.pdf (19 pages)

Specifications of MAX3845UCQ+D

Applications
HDMI, DVI, Receivers
Mounting Type
Surface Mount
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3845 is a TMDS
cable driver for multimonitor distribution of DVI™ or
HDMI™ signaling up to 1.65Gbps. Both inputs and out-
puts are standard TMDS signaling as per DVI and HDMI
standards. Because TMDS links are “point-to-point,”
buffering is required for fanout applications.
Four DVI/HDMI TMDS outputs are provided for fanout
distribution. Each TMDS output can be independently
sourced from either input or can be turned off. Each
TMDS input or output is composed of four differential
channels that can be arbitrarily assigned to the three
data signals and the 1/10th-rate clock. The data rate
depends on resolution, but it can vary from 250Mbps
(VGA) to 1.65Gbps (UXGA or 1080p/60).
Typical applications include multiroom display of the
same video source or industrial/commercial signage
applications such as airport monitors or trading room
floor displays. The MAX3845 includes selectable output
preemphasis that extends output cable reach up to an
additional 7m.
For DDC switching, use the companion MAX4814E 2:4
low-resistance CMOS crosspoint switch. DDC switching
is not required for applications that connect DDC to one
reference monitor only.
The MAX3845 can be configured to create a 2 x 8 or
4 x 4 switch (see the Typical Operating Circuit diagrams).
The MAX3845 is available in a 14mm × 14mm, 100-pin
TQFP-EP package and operates over the -10°C to
+85°C temperature range.
19-0798; Rev 0; 4/07
Pin Configuration appears at end of data sheet.
TMDS is a registered trademark of Silicon Image, Inc.
DVI is a trademark of Digital Display Working Group.
HDMI is a trademark of HDMI Licensing, LLC.
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.
Digital Signage and Industrial Display
PC Monitor Distribution
Home A/V Receivers
DVI/HDMI Distribution Amplifiers
DVI/HDMI Crosspoint Switches
________________________________________________________________ Maxim Integrated Products
DVI/HDMI 2:4 TMDS Fanout Switch and
General Description
®
2-to-4 fanout switch and
Applications
o Two DVI/HDMI TMDS-Compatible Inputs and Four
o Save Power by Turning Off Unused Outputs
o Each Output Independently Selects Input 1 or
o Three Preemphasis Settings Extend Cable Reach
o Operation Up to 1.65Gbps
o 14mm x 14mm, 100-Pin TQFP Package with
o 3.3V Power Supply
o TMDS Data (x3) and Clock (x1) Can Be Arbitrarily
+ Denotes a lead-free package.
EP = Exposed pad.
MAX3845UCQ+
Typical Operating Circuits continued at end of data sheet.
VIDEO SOURCE 1
VIDEO SOURCE 2
DVI/HDMI TMDS-Compatible Outputs
Input 2
Up to 7m
Exposed Paddle for Heat Sinking
Assigned to the Four Identical Switched Paths (A,
B, C, and D)
PART
CONTROL
SIGNALS
2:4 FANOUT/SWITCH APPLICATION
Typical Operating Circuit
IN_SEL[1:4]
PREEMPH[1:4]
-10°C to +85°C 100 TQFP-EP
TEMP RANGE PIN-PACKAGE
SWITCH x5
2:4 CMOS
FANOUT SWITCH AND
2:4 DVI/HDMI TMDS
CABLE DRIVER
Ordering Information
MAX3845
Cable Driver
DDC DATA, DDC CLK,
HOTPLUG, 5V, GND, (CEC)
HOTPLUG[1:4]
BUFFER
OUTPUT TO DISPLAY 1
OUTPUT TO DISPLAY 2
OUTPUT TO DISPLAY 3
OUTPUT TO DISPLAY 4
Features
C100E-3
CODE
PKG
1

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MAX3845UCQ+D Summary of contents

Page 1

... TMDS is a registered trademark of Silicon Image, Inc. DVI is a trademark of Digital Display Working Group. HDMI is a trademark of HDMI Licensing, LLC. ________________________________________________________________ Maxim Integrated Products 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. o Two DVI/HDMI TMDS-Compatible Inputs and Four ...

Page 2

DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver ABSOLUTE MAXIMUM RATINGS Supply Voltage Range (V ) ................................-0.3V to +5.5V CC Voltage Range at HOTPLUGx Pins ......................-0.3V to +6.0V Voltage Range at LVTTL, LVCMOS, I/O Pins .......-0.3V to +5.5V Voltage Range ...

Page 3

DVI/HDMI 2:4 TMDS Fanout Switch and ELECTRICAL CHARACTERISTICS (continued 3.0V to +3.6V -10°C to +85°C. Typical values are 250Mbps to 1.65Gbps +25°C, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL ...

Page 4

DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver (Typical values are +3.3V +25°C, data pattern = otherwise noted.) SUPPLY CURRENT vs. AMBIENT TEMPERATURE 500 OUT_LEVEL = LOW, ALL INPUTS/OUTPUTS ACTIVE, 480 PREEMPHASIS ...

Page 5

DVI/HDMI 2:4 TMDS Fanout Switch and (Typical values are +3.3V +25°C, data pattern = otherwise noted.) DIFFERENTIAL-INPUT RETURN LOSS vs. FREQUENCY 0 -5 -10 -15 -20 -25 -30 -35 -40 0 500 ...

Page 6

DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver PIN NAME IN2_A+, 17, 20, 23, IN2_B+, Noninverting TMDS, CML Input, Channel 2 27 IN2_C+, IN2_D+ IN2_A-, 18, 21, 24, IN2_B-, Inverting TMDS, CML Input, Channel 2 28 IN2_C-, IN2_D- IN_SEL4, 30, ...

Page 7

DVI/HDMI 2:4 TMDS Fanout Switch and PIN NAME Output Level Select, LVTTL/LVCMOS Input. Force pin low when no back termination is used (11mA 63 OUT_LEVEL of tail current). Force pin high when 200 current). 66, 69, 72, 75, 76, 79, ...

Page 8

DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver Detailed Description The MAX3845 2:4 DVI/HDMI fanout switch and cable driver accept differential CML input data at rates of 250Mbps up to 1.65Gbps (individual channel data rate). The input portion of the ...

Page 9

DVI/HDMI 2:4 TMDS Fanout Switch and 2:4 DVI FANOUT SWITCH AND CABLE DRIVER EXAMPLE: MAX3815 EQ IN1_[A-D] PWRDWN_1 PD CLKLOS LOSMUTE_EN EXAMPLE: MAX3815 EQ IN2_[A-D] PWRDWN_2 PD CLKLOS ANALOG TEMP TEMP (DIE TEMP SENSE) DECODER HIGH IN_SELx LOW OPEN Figure ...

Page 10

DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver MAX3845 TMDS OUTPUT *BACK TERMINATION RESISTOR IS LOCATED AS CLOSE AS POSSIBLE TO THE MAX3845. Figure 2. DC-Coupled Differential Back Termination MAX3845 100Ω* TMDS OUTPUT PAIR *BACK TERMINATION RESISTORS ARE LOCATED AS ...

Page 11

DVI/HDMI 2:4 TMDS Fanout Switch and Table 1. Output Levels With and Without Back Termination CONDITIONS PREEMPHx = LOW, OUT_LEVEL = LOW (Output Drive Current = 11mA) No back termination PREEMPHx = LOW, OUT_LEVEL = HIGH (Output Drive Current = ...

Page 12

DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver Interface Models V CC MAX3845 50Ω 50Ω TMDS INPUT+ EQUALIZATION NETWORK TMDS INPUT- Figure 4. Simplified Input Circuit Schematic MAX3845 TVS* *TVS IS A "TRANSIENT VOLTAGE SUPPRESSOR" CLAMP-CIRCUIT. Figure 5. Simplified Output ...

Page 13

DVI/HDMI 2:4 TMDS Fanout Switch and TOP VIEW CC1 INT1_B+ 2 INT1_B- 3 ...

Page 14

DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver MOVIE WITH HDCP HDMI/DVI Blu-ray™, HD-DVD, CABLE STB, SATELLITE STB SPORTS WITH HDCP HDMI/DVI Blu-ray, HD-DVD, CABLE STB, SATELLITE STB * BECAUSE THE MAX3845 IS A TRANSPARENT SWITCH, HDCP SOURCES CAN ONLY ...

Page 15

DVI/HDMI 2:4 TMDS Fanout Switch and GRAPHICS ASIC SCALING AND PICTURE PROCESSING ENGINE WITH TDMS OUTPUT EQ COMPUTER GRAPHICS VIDEO CARD ON PC/MAC LONG HDMI MAX3815 CABLE EQUALIZER FOR APPLICATIONS THAT ARE NOT HDCP ENCODED, THE MAX3845 CAN BE USED ...

Page 16

DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver MATRIX APPLICATION 26 50 TOP VIEW SIDE VIEW 100 76 FOR MATRIX OPERATION, TWO MAX3845 PARTS ARE LOCATED ON EITHER ...

Page 17

DVI/HDMI 2:4 TMDS Fanout Switch and 2:8 FANOUT/SWITCH APPLICATION MAX3814 (8) MINIMUM INPUT 1 LOSS POWER DVI/HDMI CABLE SPLITTERS EQUALIZER AND DRIVER (USE 200Ω BACK TERM) MAX3814 INPUT 2 DVI/HDMI CABLE EQUALIZER AND DRIVER (USE 200Ω BACK TERM) 50Ω MATCHED ...

Page 18

DVI/HDMI 2:4 TMDS Fanout Switch and Cable Driver (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.) 18 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, 100L TQFP 14x14x1.00mm ...

Page 19

... 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 ____________________ 19 © 2007 Maxim Integrated Products ...

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