MAXIM MAX9311, MAX9313 User Manual

General Description

The MAX9311/MAX9313 are low-skew, 1-to-10 differential drivers designed for clock and data distribution. These devices allow selection between two inputs. The selected input is reproduced at 10 differential outputs. The differential inputs can be adapted to accept singleended inputs by connecting the on-chip VBBsupply to one input as a reference voltage.

The MAX9311/MAX9313 feature low part-to-part skew (30ps) and output-to-output skew (12ps), making them ideal for clock and data distribution across a backplane or a board. For interfacing to differential HSTL and LVPECL signals, these devices operate over a +2.25V to +3.8V supply range, allowing high-performance clock or data distribution in systems with a nominal +2.5V or +3.3V supply. For differential LVECL operation, these devices operate from a -2.25V to -3.8V supply.

The MAX9311 features an on-chip VBBreference output of 1.425V below the positive supply voltage. The MAX9313 offers an on-chip VBBreference output of

1.32V below the positive supply voltage.

Both devices are offered in space-saving, 32-pin 5mm ✕ 5mm TQFP, 5mm x 5mm QFN, and industry-standard 32-pin 7mm x 7mm LQFP packages.

Applications

Precision Clock Distribution

Low-Jitter Data Repeater

Features

♦ +2.25V to +3.8V Differential HSTL/LVPECL

Operation

♦ -2.25V to -3.8V LVECL Operation

♦ 30ps (typ) Part-to-Part Skew

♦ 12ps (typ) Output-to-Output Skew

♦ 312ps (typ) Propagation Delay

♦ ≥ 300mV Differential Output at 3GHz

♦ On-Chip Reference for Single-Ended Inputs

♦ Output Low with Open Input

♦ Pin Compatible with MC100LVEP111 (MAX9311)

and MC100EP111 (MAX9313)

♦ Offered in Tiny QFN* Package (70% Smaller

Footprint than LQFP)

MAX9311/MAX9313

1:10 Differential LVPECL/LVECL/HSTL

Clock and Data Drivers

________________________________________________________________ Maxim Integrated Products 1

TOP VIEW

32 28293031 252627

Q1Q0

1611 12

24 Q3

CLK0

CLKSEL

MAX9311 MAX9313

Q8Q9

CLK1

CLK0

LQFP (7mm × 7mm), TQFP (5mm × 5mm),

QFN (NO LEADS EXTENDING FROM QFN PACKAGE)

CLKSEL

MAX9311/MAX9313

OFF

CLK0, CLK0 CLK1, CLK1

Pin Configuration

Ordering Information

19-2078; Rev 2; 10/02

PART

TEMP. RANGE

PIN-PACKAGE

MAX9311ECJ

32 LQFP (7mm ✕ 7mm)

MAX9311EGJ*

32 QFN (5mm ✕ 5mm)

MAX9311EHJ*

32 TQFP (5mm ✕ 5mm)

MAX9313ECJ

32 LQFP (7mm ✕ 7mm)

MAX9313EGJ*

32 QFN (5mm ✕ 5mm)

MAX9313EHJ*

32 TQFP (5mm ✕ 5mm)

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.

*Future product—contact factory for availability.

-40°C to +85°C

MAX9311/MAX9313

1:10 Differential LVPECL/LVECL/HSTL Clock and Data Drivers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC- VEE= +2.25V to +3.8V, outputs loaded with 50Ω ±1% to VCC- 2V, CLKSEL = high or low, unless otherwise noted.) (Notes 1–4)

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.

VCC- VEE...............................................................................4.1V

Inputs (CLK_,

CLK_, CLKSEL)..............VEE- 0.3V to VCC+ 0.3V

CLK_ to CLK_ ....................................................................±3.0V

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

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

Sink/Source Current ...............................................±0.65mA

Junction-to-Ambient Thermal Resistance in Still Air

7mm x 7mm LQFP .....................................................+90°C/W

Junction-to-Ambient Thermal Resistance with 500 LFPM Airflow

7mm x 7mm LQFP .....................................................+60°C/W

Junction-to-Case Thermal Resistance

7mm x 7mm LQFP .....................................................+12°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 (CLKSEL, CLK_, CLK_,

Q_, Q_, V

).......................................................................2kV

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

-40°C +25°C +85°C

PARAMETER

CONDITIONS

MIN MAX MIN MAX MIN MAX

UNITS

SINGLE-ENDED INPUT (CLKSEL)

Input High Voltage

Inter nal V

B B

- 1.62

Input Low Voltage

Inter nal V

B B

Input High Current

150 150 150 µA

Input Low Current

-10 +10 -10 +10 -10 +10 µA

DIFFERENTIAL INPUTS (CLK_, CLK_)

Single-Ended Input High Voltage

connected to CLK _ ( V

for V

connected to C LK_) , Figure 1

SYMBOL

thr eshol d

M AX 9311

M AX 9313

- 1.23

- 1.165

- 1.23

- 1.165

M AX 9311

thr eshol d

M AX 9313

- 1.475

M AX 9311

M AX 9313

- 1.23

- 1.165

- 1.23

- 1.165

- 1.475

- 1.23

- 1.165

- 1.23

- 1.165

- 1.475

MAX9311/MAX9313

1:10 Differential LVPECL/LVECL/HSTL

Clock and Data Drivers

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC- VEE= +2.25V to +3.8V, outputs loaded with 50Ω ±1% to VCC- 2V, CLKSEL = high or low, unless otherwise noted.) (Notes 1–4)

-40°C +25°C +85°C

PARAMETER

CONDITIONS

MIN MAX MIN MAX MIN MAX

UNITS

- 1.62

-1.62

Single-Ended Input Low Voltage

connected to CLK _ ( V

for V

connected to C LK_) , Figure 1

High Voltage of Differential Input

IHD

Low Voltage of Differential Input

ILD

0.095

- V

0.095

- V

Differential Input Voltage

ILD

0.095 3.0 0.095 3.0

3.0

Input High Current

150 150 150 µA

CLK_ Input Low Current

-10 +10 -10 +10 -10 +10 µA

CLK_ Input Low Current

-150 -150 -150 µA

OUTPUTS (Q_, Q_)

Single-Ended Output High Voltage

Figure 1

Single-Ended Output Low Voltage

Figure 1

Differential

Output Voltage

Figure 1 670 950 670 950 670 950 mV

REFERENCE (VBB)

C C

Reference Voltage Output (Note 5)

IBB = ±0.5mA

- 1.26

POWER SUPPLY

Supply Current (Note 6)

75 82 95 mA

SYMBOL

M AX 9311

M AX 9313

ILCLK

For VCC - VEE < 3.0V

IHD -

For VCC - VEE ≥ 3.0V

VEE +1.2

- 1.475

- 0.095

VEE + 1.2

- 1.475

- 0.095

VEE +1.2

0.095

-1.475

- 0.095

- 1.025

- 0.900

- 1.025

- 0.900

- 1.025

- 0.900

M AX 9311

M AX 9313

- 1.93

- 1.525

- 1.38

- 1.695

- 1.325

- 1.93

- 1.525

- 1.38

- 1.695

- 1.325

- 1.93

- 1.525

- 1.38

- 1.695

- 1.325

MAX9311/MAX9313

1:10 Differential LVPECL/LVECL/HSTL Clock and Data Drivers

4 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS

(VCC- VEE= 2.25V to 3.8V, outputs loaded with 50Ω ±1% to VCC- 2V, input frequency = 1.5GHz, input transition time = 125ps (20% to 80%), CLKSEL = high or low, V

IHD

= VEE+ 1.2V to VCC, V

ILD

= VEEto VCC- 0.15V, V

IHD

- V

ILD

= 0.15V to the smaller of 3V or

- VEE, unless otherwise noted. Typical values are at VCC- VEE= 3.3V, V

IHD

= VCC-1V, V

ILD

= VCC-1.5V.) (Note 7)

-40°C +25°C +85°C

PARAMETER

SYMBOL

CONDITIONS

UNITS

Differential Input-toOutput Delay

PLHD

Figure 2

Output-toOutput Skew (Note 8)

12 46 12 46 10 35 ps

Part-to-Part

Skew (Note 9)

= 1.5GH z,

1.2

Added Random Jitter (Note 10)

= 3.0GH z,

C l ock p atter n

(RMS)

Added Deterministic

Jitter (Note 10)

3Gbps, 2

-1 PRBS

pattern

80 95 80 95 80 95

(p-p)

VOH - VOL ≥ 350mV, Clock pattern, Figure 2

Switching Frequency

MAX

VOH - VOL ≥ 500mV, Clock pattern, Figure 2

GHz

Output Rise/Fall Time (20% to 80%)

Figure 2

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: Single-ended input operation using V

is limited to VCC- VEE= 3.0V to 3.8V for the MAX9311 and VCC- VEE= 2.7V to 3.8V

for the MAX9313.

Note 4: DC parameters production tested at T

= +25°C. Guaranteed by design and characterization over the full operating temper-

ature range.

Note 5: Use V

only for inputs that are on the same device as the VBBreference.

Note 6: All pins open except V

and VEE.

Note 7: Guaranteed by design and characterization. Limits are set at ±6 sigma. Note 8: Measured between outputs of the same part at the signal crossing points for a same-edge transition. Note 9: Measured between outputs of different parts at the signal crossing points under identical conditions for a same-edge

transition.

Note 10:Device jitter added to the input signal.

PHLD

SKOO

SKPP

tR, t

C l ock p atter n

MIN TYP MAX MIN TYP

220 321 380 220 312 410 260 322 400

160

1.2 2.5 1.2 2.5

1.2 2.6 1.2 2.6 1.2 2.6

2.0 2.0 3.0 2.0

1.5 1.5 1.5

100 112 140 100 116 140 100 121 140

190

MIN TYP MAX

140

2.5

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