MAXIM MAX9400, MAX9402, MAX9403, MAX9405 User Manual

General Description

The MAX9400/MAX9402/MAX9403/MAX9405 are extremely fast, low-skew quad LVECL/ECL or LVPECL/ PECL buffer/receivers designed for high-speed data and clock driver applications. These devices feature an ultra-low propagation delay of 335ps and channel-tochannel skew of 16ps in asynchronous mode with 86mA supply current.

The four channels can be operated synchronously with an external clock, or in asynchronous mode determined by the state of the SEL input. An enable input provides the ability to force all the outputs to a differential low state.

A variety of input and output terminations are offered for maximum design flexibility. The MAX9400 has open inputs and open emitter outputs. The MAX9402 has open inputs and 50Ω series outputs. The MAX9403 has 100Ω differential input impedance and open emitter outputs. The MAX9405 has 100Ω differential input impedance and 50Ω series outputs.

These devices operate with a supply voltage of (VCCVEE) = 2.375V to 5.5V, and are specified for operation from -40°C to +85°C. These devices are offered in space-saving 32-pin 5mm ✕ 5mm TQFP and 32-lead 5mm ✕ 5mm QFN packages.

Applications

Data and Clock Driver and Buffer

Central Office Backplane Clock Distribution

DSLAM Backplane

Base Station

ATE

Features

♦ 400mV Differential Output at 3.0GHz Data Rate

♦ 335ps Propagation Delay in Asynchronous Mode

♦ 8ps Channel-to-Channel Skew in Synchronous

Mode

♦ Integrated 50Ω Outputs (MAX9402/MAX9405)

♦ Integrated 100Ω Inputs (MAX9403/MAX9405)

♦ Synchronous/Asynchronous Operation

MAX9400/MAX9402/MAX9403/MAX9405

Quad Differential LVECL/LVPECL

Buffer/Receivers

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

MAX9400 MAX9402 MAX9403 MAX9405

TQFP (5mm x 5mm)

TOP VIEW

32 28

293031

IN0

VCCOUT0

OUT0

IN0

VEEIN1

IN1

1611 12

IN3

OUT3

IN2

OUT1

24 V

OUT1

OUT2

CLK

SEL

CLK

IN3

OUT3

IN2

Pin Configurations

19-2223; Rev 2; 1/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Functional Diagram appears at end of data sheet.

PART

TEMP

RANGE

PIN-

DATA

OUTPUT

MAX9400EHJ

Open

MAX9400EGJ*

Open

MAX9402EHJ

50Ω

MAX9402EGJ*

32 QFN

50Ω

MAX9403EHJ

Open

MAX9403EGJ*

32 QFN

Open

MAX9405EHJ

50Ω

MAX9405EGJ*

32 QFN

50Ω

Pin Configurations continued at end of data sheet.

*Future product—contact factory for availability.

PACKAGE

-40°C to +85°C 32 TQFP Open

-40°C to +85°C 32 QFN Open

-40°C to +85°C 32 TQFP Open

-40°C to +85°C

-40°C to +85°C 32 TQFP 100Ω

-40°C to +85°C

-40°C to +85°C 32 TQFP 100Ω

-40°C to +85°C

INPUT

Open

100Ω

MAX9400/MAX9402/MAX9403/MAX9405

Quad Differential LVECL/LVPECL Buffer/Receivers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC- VEE= 2.375V to 5.5V, MAX9400/MAX9403 outputs terminated with 50Ω ±1% to VCC- 2.0V. Typical values are at VCC- V

3.3V, V

IHD

= VCC- 0.9V, V

ILD

= VCC- 1.7V, TA= +25°C, unless otherwise noted.) (Notes 1, 2, and 3)

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.

VCCto VEE................................................................-0.3V to +6V

Inputs to V

...............................................-0.3V to (VCC+ 0.3V)

Differential Input Voltage .......................................................±3V

Continuous Output Current .................................................50mA

Surge Output Current........................................................100mA

Continuous Power Dissipation (T

= +70°C) 32-Pin 5mm x 5mm TQFP

(derate 9.5mW/°C above +70°C).................................761mW

32-Lead 5mm x 5mm QFN

(derate 21.3mW/°C above +70°C)...................................1.7W

Junction-to-Ambient Thermal Resistance in Still Air

32-Pin 5mm x 5mm TQFP ........................................+105°C/W

32-Lead 5mm x 5mm QFN ........................................+47°C/W

Junction-to-Ambient Thermal Resistance with

500LFPM Airflow

32-Pin 5mm x 5mm TQFP .........................................+73°C/W

Junction-to-Case Thermal Resistance

32-Pin 5mm x 5mm TQFP .........................................+25°C/W

32-Lead 5mm x 5mm QFN .........................................+2°C/W

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

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

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

ESD Protection

Human Body Model (Inputs and Outputs) ........................2kV

Soldering Temperature (10s) ...........................................+300°C

PARAMETER

CONDITIONS

UNITS

INPUTS (IN_, IN_, CLK, CLK, EN, EN, SEL, SEL)

Differential Input High Voltage V

IHD

Figure 1

1.4

Differential Input Low Voltage V

ILD

Figure 1

0.2

- VEE < +3.0V 0.2

Differential Input Voltage V

Figure 1

- VEE ≥ +3.0V 0.2 3.0

MAX9400/ MAX9402

EN, EN, SEL, SEL , IN_, IN_,

-10 25

Input Current

MAX9403/ MAX9405

EN, EN, SEL, SEL, CLK, or CLK = V

IHD

or V

ILD

-10 25

µA

Differential Input Resistance

MAX9403/MAX9405 86 114 Ω

OUTPUTS (OUT_, OUT_)

Differential Output Voltage

Figure 1

Output Common-Mode Voltage V

OCM

Figure 1

1.5

1.1

Internal Current Source I

SINK

MAX9402/MAX9405, Figure 2 6.5 8.3 10 mA

Output Impedance R

OUT

MAX9402/MAX9405, Figure 2 40 50 60 Ω

POWER SUPPLY

MAX9402/MAX9405

180

Supply Current I

MAX9400/MAX9403 86 118

SYMBOL

MIN TYP MAX

IHD

or V

IIH, I

CLK, or CLK = V

ILD

600 660

VCC -

1.25

150

VCC -

MAX9400/MAX9402/MAX9403/MAX9405

Quad Differential LVECL/LVPECL

Buffer/Receivers

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS

(VCC- VEE= 2.375V to 5.5V, outputs terminated with 50Ω ±1% to VCC- 2.0V, enabled, CLK = 3.2GHz, fIN= 1.6GHz, input transition time = 125ps (20% to 80%), V

IHD

= VEE+ 1.2V to VCC, V

ILD

= VEEto VCC- 0.2V, V

IHD

- V

ILD

= 0.2V to smaller of |VCC- VEE| or 3V,

unless otherwise noted. Typical values are at V

- VEE= 3.3V, V

IHD

= VCC- 0.9V, V

ILD

= VCC1.7V, TA= +25°C, unless otherwise

noted.) (Notes 1, 4)

PARAMETER

CONDITIONS

UNITS

437

IN-to-OUT Differential Propagation Delay

PLH1

PHL1

437

597

CLK-to-OUT Differential Propagation Delay

PLH2

PHL2

SEL = low, Figure 4

597

IN-to-OUT Channel-to-Channel Skew (Note 5)

SKD1

SEL = high 16 80 ps

CLK-to-OUT Channel-toChannel Skew (Note 5)

SKD2

SEL = low 8 55 ps

Maximum Clock Frequency

)

VOL ≥ 500mV, SEL = low 3.0

GHz

Maximum Data Frequency

)

VOL ≥ 400mV, SEL = high 2

GHZ

1.3

Added Random Jitter (Note 6) t

SEL = high, fIN = 2GHz

1.5

(RMS)

SEL = low, f

CLK

= 3.0GHz, IN_ = 3.0Gbps

- 1 PRBS pattern

17 30

Added Deterministic Jitter (Note 6)

SEL = high, IN = 2.0Gbps 223 - 1 PRBS pattern

40 55

(P-P)

IN-to-CLK Setup Time t

Figure 4 80 ps

CLK-to-IN Hold Time t

Figure 4 80 ps

Output Rise Time t

Figure 3 80 120 ps

Output Fall Time t

Figure 3 80 120 ps

Propagation Delay Temperature Coefficient

∆tPD/

∆T

0.2 1

ps/°C

Note 1: Measurements are made with the device in thermal equilibrium. Note 2: Current into a pin is defined as positive. Current out of a pin is defined as negative. Note 3: DC parameters are production tested at +25°C. DC limits are guaranteed by design and characterization over the full oper-

ating temperature range.

Note 4: Guaranteed by design and characterization. Limits are set to ±6 sigma. Note 5: Measured between outputs of the same part at the signal crossing points for a same-edge transition. Note 6: Device jitter added to the input signal.

SYMBOL

CLK(MAX

IN(MAX

MIN TYP MAX

MAX9400/MAX9403 237 335

MAX9402/MAX9405

SEL = high, Figure 3

237 335

MAX9400/MAX9403 397 475

MAX9402/MAX9405

SEL = low, f

= 3.0GHz clock, fIN = 1.5GHz 0.64

CLK

397 475

0.74

MAX9400/MAX9402/MAX9403/MAX9405

Quad Differential LVECL/LVPECL Buffer/Receivers

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC- VEE= 3.3V, MAX9400, outputs terminated with 50Ω ±1% to VCC- 2.0V, enabled, SEL = high, CLK = 2.0GHz, fIN= 1.0GHz, input transition time = 125ps (20% to 80%), V

IHD

= VCC- 1.0V, V

ILD

= VCC- 1.5V, TA= +25°C, unless otherwise noted.)

-40 10-15 35 60 85

SUPPLY CURRENT (IEE)

vs. TEMPERATURE

MAX9400 toc01

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

200

600

400

800

1000

0 1000500 1500 2000 2500 3000 3500

OUTPUT AMPLITUDE (VOH - VOL)

vs. IN_ FREQUENCY

MAX9400 toc02

IN_ FREQUENCY (MHz)

OUTPUT AMPLITUDE (mV)

100

-40 10-15 356085

OUTPUT RISE/FALL vs. TEMPERATURE

MAX9400 toc03

TEMPERATURE (°C)

OUTPUT RISE/FALL TIME (ps)

325

335

330

345

340

350

355

-40 85

IN-TO-OUT PROPAGATION DELAY

vs. TEMPERATURE

MAX9400 toc04

TEMPERATURE (°C)

PROPAGATION DELAY (ps)

10-15 35 60

PLH

PHL

520

500

480

460

440

-40 10-15 356085

CLK-TO-OUT PROPAGATION DELAY

vs. TEMPERATURE

MAX9400 toc05

TEMPERATURE (°C)

PROPAGATION DELAY (ps)

PLH2

PHL2

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