MAXIM MAX4929E User Manual

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General Description

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).

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

o DDC Switches

Low 20pF (typ) Capacitance

o Protects EDID (Extended Display Identification

Data) EPROM or MCU from Excess Voltage

o Hot-Plug Detect Signal

Translates MCU Voltage to TTL Levels

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

No Added Active Components Needed

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

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

Packages

MAX4929E

HDMI 2:1 Low-Frequency Translating Switch

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

HIZ1

HIZ2

CLP

SCLO

SDAO

V

DD

HPDHPIRO SEL

V+

+5V

MCU

EDID

EPROM

2kΩ

HPIR1
SCL1
SDA1
HPDO1

TMDS1

HPIR2
SCL2
SDA2
HPDO2

TMDS1

GND

SEL

HPIRO

HPD

VL

HDMI1

HDMI2

V

DD

2kΩ

+3.3V TO +5V

+2V to +3.3V

0.1μF

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.

Pin Configurations continued at end of data sheet.

19

20

18

17

7

6

8

SCL2

SDA1

9

SDA2

HPD

SDAO

SCLO

HIZ2

1 2

EXESD

45

15 14 12 11

HPDO2

HPIR2

*EP

VL

CLP

V+

SCL1

MAX4929E

HPDO1

HPIRO

3

13

GND

16

10

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).

PART TEMP RANGE

PIN­PACKAGE

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

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

PKG

CODE

MAX4929E

HDMI 2:1 Low-Frequency Translating Switch

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V+ = +5V ±10%, CLP = VL = +3.3V ±10%, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

(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 (T

A

= +70°C)

20-Pin QSOP (derate 9.1mW/°C above +70°C) ..........727mW

20-Pin TQFN (derate 16.9mW/°C above +70°C) ......1356mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Junction Temperature......................................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

),

)

),

)

)

),

)

),

)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

POWER SUPPLY

V+ Supply Current I+ V+ = 5.5V, VL = CLP = 3.6V 3 8 µA

V+ Supply Current I+ V+ = 0V, VL = CLP = 0V, V

VL Supply Current I

CLP Supply Current I

VL

CLP

ANALOG SWITCH

R

On-Resistance

On-Resistance Match Between
Channels

On-Resistance Flatness R

Off-Leakage Current

On-Leakage Current

Output Clamped Voltage

ON(SCL_

R

ON(SDA_

ΔR

ON

FLAT

I

SCL_(OFF

I

SDA_(OFF

I

SCL_(ON),

I

SDA_(ON

V

OV C ( S C L O) ,

V

OV C ( S D A O)

SWITCH DYNAMIC CHARACTERISTICS

C

SCL_, SDA_ Off-Capacitance

SCL_, SDA_ On-Capacitance

SCL_(OFF

C

SDA_(OFF

C

SCL_(ON

C

SDA_(ON

Bandwidth BW RS = RL = 50Ω, CL = 10pF 40 MHz

Crosstalk V

Off-Isolation V

CT

ISO

LOGIC INPUT (HPIR1, HPIR2)

Input Logic-Low Voltage V

Input Logic-High Voltage V

Input Logic Leakage I

IL

IH

INL

V+ = 5.5V, VL = CLP = 3.6V 1 µA

V+ = 5.5V, VL = CLP = 3.6V 1 µA

V+ = 4.5V, CLP = 3V, V

1.5V; I

SCL_

V+ = 4.5V, CLP = 3V, V

1.5V; I

SCL_

V+ = 4.5V, CLP = 3V, V

1.5V; I

SCL_

V+ = 5.5V, V
HIZ1 = HIZ2 = 0V or VL (Note 1)

V+ = 5.5V, V
(Note 1)

V+ = 5V, CLP = 3.3V, VL = 5V, RP = 1kΩ
(Note 2)

V+ = 5V, TA = +25°C, Figure 1 20 pF

V+ = 5V, TA = +25°C, Figure 1 30 pF

RS = RL = 50Ω, f = 1MHz, Figure 2 (Note 3) -75 dB

RS = RL = 50Ω, f = 1MHz, Figure 2 (Note 4) -70 dB

V+ = 4.5V 0.8 V

V+ = 5.5V 3.8 V

= +5.5V 200 µA

HPIR_

or I

or I

or I

SCL_

SCL_

SDA_

SDA_

SDA_

or V

or V

SCL_

= ±10mA

SCL_

= ±10mA

SCL_

= ±10mA

= 0V, 5.5V;

SDA_

= 0V, 5.5V

SDA_

or V

or V

or V

SDA_

SDA_

SDA_

= 0 to

= 0 to

= 0 to

10 25 Ω

28Ω

13 Ω

-5 +5 µA

-5 +5 µA

3.3 V

0.01 1 µA

MAX4929E

HDMI 2:1 Low-Frequency Translating Switch

_______________________________________________________________________________________ 3

)

)

)

)

)

)

ELECTRICAL CHARACTERISTICS (continued)

(V+ = +5V ±10%, CLP = VL = +3.3V ±10%, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

Note 1: Leakage measured at SCLO or SDAO with SCL_ and SDA_ open.
Note 2: Pullup resistor of R

P

= 1kΩ at SCLO and SDAO. These resistors are necessary for the clamp/translation to operate correctly.

Note 3: Crosstalk is measured between any two analog inputs, crosstalk = 20log(V

OUT

/ VIN).

Note 4: Off-isolation = 20log10 (V

SCLO

/ V

SCL_

), V

SCLO

= output, V

SCL_

= input to off switch.

Note 5: Referenced to GND.
Note 6: Any combination of pin to any other pin.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

LOGIC INPUT (SEL, HPD, HIZ1, HIZ2)

Input Logic-Low Voltage V

Input Logic-High Voltage V

Hysteresis V

Input Logic-Leakage Current I

IL

IH

HYST

INL

LOGIC OUTPUT (HPDO1, HPDO2, HPIRO)

H P D O _ O utp ut Log i c- Low V ol tag eV

H P D O_ Outp ut Log i c- H i g h V ol tag eV

H P IRO O utp ut Log i c- Low V ol tag eV

H P IRO O utp ut Log i c- H i g h V ol tag eV

Output-Logic Leakage Current I

OL(HPDO_

OH(HPDO_

OL(HPIRO

OH(HPIRO

O

TIMING CHARACTERISTICS

t

PD(HPDO_

Logic Delay

t

PD(HPIRO

ESD PROTECTION

ESD Protection, Human Body
Model

EXESD Leakage Current 1.0 µA

V+ = 4.5V, VL = CLP = 3V 0.8 V

V+ = 5.5V, VL = CLP = 3.6V 2.0 V

3V ≤ VL = CLP ≤ 3.6V 150 mV

0.01 1 µA

V+ = 4.5V, VL = CLP = 3.0V, I

V + = 4.5V , V L = C LP = 3.0V , I

V+ = 4.5V, VL = CLP = 3.0V, I

V + = 4.5V , V L = C LP = 3.0V , I

= 4mA 0.5 V

SINK

S OU RC E

S OU RC E

= 4m A 4.0 V

= 2mA 0.5 V

SINK

= 2m A 2.5 V

HIZ1 = HIZ2 = 0V or VL 1 µA

V+ = 4.5V, VL = CLP = 3.0V, CL = 15pF,
SEL = 0V or VL (Figure 3)

V+ = 4.5V, VL = CLP = 3.0V, CL = 15pF,
(SEL = 0V or VL (Figure 3)

HPIR1, HPIR2, HPDO1, HPDO2, SCL1,
SCL2, SDA1, SDA2 (Note 5)

HPIRO, HPD, SEL, SCLO, SDAO, HIZ1,
HIZ2 (Note 6)

33

33

±6

±2

ns

kV

MAX4929E

HDMI 2:1 Low-Frequency Translating Switch

4 _______________________________________________________________________________________

Test Circuits/Timing Diagrams

Figure 1. Channel Off-/On-Capacitance

Figure 2. On-Loss, Off-Isolation, and Crosstalk

Figure 3. Logic Delay Timing

+5V

0.1μF

+3.3V

0.1μF 0.1μF

0V OR VL

50Ω

SEL

SDA1/
SCL1

HIZ1

VL

HIZ2

CAPACITANCE

+5V+3.3V

V+VLCLP

MAX4929E

GND

METER

f = 1MHz

SDAO/

SDA2/
SCL2*

SCLO

V

IN

V

OUT

V+

SDAO/SCLO

SDA_/
SCL_

GND

MAX4929E

NETWORK
ANALYZER

50Ω

MEAS REF

50Ω 50Ω

CLP

SEL

HIZ1
HIZ2

VL

0.1μF

OR V

V

IL

IH

VL

V

OUT

V

IN

V

OUT

V

IN

V

OUT

V

IN

50Ω

OFF-ISOLATION = 20log

ON-LOSS = 20log

CROSSTALK = 20log

MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN SDAO/SCLO AND "OFF" SDA_/SCL_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN SDAO/SCLO AND "ON" SDA_/SCL_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.

*FOR CROSSTALK THIS PIN IS SCL2.
SCL1 AND SCL0 ARE OPEN.

tr < 5ns
tf < 5ns

0UT

HPD

HPIR_

HPDO_

HPIRO

V+ or V

0V

0V

L

50%

V

OUT

0.9 x V

t

PD(HPDO)

t

PD(HPIRO)