MAXIM MAX9320B User Manual

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General Description

The MAX9320B low-skew, 1-to-2 differential driver is
designed for clock and data distribution. The input is
reproduced at two differential outputs. The differential
input can be adapted to accept single-ended inputs by
applying an external reference voltage.

The MAX9320B features ultra-low propagation delay
(208ps), part-to-part skew (20ps), and output-to-output
skew (6ps) with 30mA maximum supply current, mak­ing this device ideal for clock distribution. For interfac­ing to differential PECL and LVPECL signals, this
device operates over a +3.0V to +5.5V supply range,
allowing high-performance clock or data distribution in
systems with a nominal 3.3V or 5V supply. For differen­tial ECL and LVECL operation, this device operates
from a -3.0V to -5.5V supply.

The MAX9320B is offered in industry-standard 8-pin
TSSOP and SO packages.

Applications

Precision Clock Distribution

Low-Jitter Data Repeater

Protection Switching

Features

♦ Improved Second Source of the MC10EP11D

♦ +3.0V to +5.5V Differential PECL/LVPECL

Operation

♦ -3.0V to -5.5V ECL/LVECL Operation

♦ Low 22mA Supply Current

♦ 20ps Part-to-Part Skew

♦ 6ps Output-to-Output Skew

♦ 208ps Propagation Delay

♦ Minimum 300mV Output at 3GHz

♦ Outputs Low for Open Input

♦ ESD Protection >2kV (Human Body Model)

MAX9320B

1:2 Differential PECL/ECL/LVPECL/LVECL

Clock and Data Driver

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

19-2383; Rev 1; 11/03

Ordering Information

Figure 1. Differential Transition Time and Propagation Delay
Timing Diagram

PART TEMP RANGE PIN-PACKAGE

MAX9320BESA -40°C to +85°C 8 SO

MAX9320BEUA -40°C to +85°C 8 TSSOP

D

D

Q_

Q

(Q_) - (Q_)

t

PLHD

20%

V

- V

IHD

80%

0V (DIFFERENTIAL)

t

R

ILD

t

PHLD

V

- V

OH

OL

80%

0V (DIFFERENTIAL)

t

F

20%

V

IHD

V

ILD

Q0

1

V

OH

Q0

V

OL

2

Q1

3

Q1

4

MAX9320B

50kΩ

100kΩ

80kΩ

60kΩ

V

8

CC

D

7

D

6

V

5

EE

TSSOP/SO

MAX9320B

1:2 Differential PECL/ECL/LVPECL/LVECL
Clock and Data Driver

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC- VEE= 3.0V to 5.5V, outputs loaded with 50Ω ±1% to VCC- 2V. Typical values are at VCC- VEE= 5.0V, V

IHD

= VCC- 1.0V, V

ILD

= VCC- 1.5V, unless otherwise noted.) (Notes 1, 2, 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.............................................................................+6V

D or D....................................................V

EE

- 0.3V to VCC+ 0.3V

D or D with the Other Floating............. V

CC

- 5.0V to VCC+ 0.3V

D to D .................................................................................±3.0V

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

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

Continuous Output Power Dissipation (TA= +70°C)

8-Pin TSSOP

(derate 4.5mW/°C above +70°C).................................362mW

8-Pin SO

(derate 5.9mW/°C above +70°C).................................471mW

Junction-to-Ambient Thermal Resistance in Still Air

8-Pin TSSOP ............................................................+221°C/W

8-Pin SO...................................................................+170°C/W

Junction-to-Ambient Thermal Resistance with 500
LFPM Airflow

8-Pin TSSOP ............................................................+155°C/W

8-Pin SO.....................................................................+99°C/W

Junction-to-Case Thermal Resistance

8-Pin TSSOP ..............................................................+39°C/W

8-Pin SO.....................................................................+40°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 (D, D, Q_, Q_) .................................>2kV

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

PARAMETER SYM BOL CONDITIONS

DIFFERENTIAL INPUT (D, D)

High Voltage of
Differential
Input

Low Voltage of
Differential
Input

Differential
Input Voltage

Input High
Current

D Input Low
Current

D Input Low
Current

DIFFERENTIAL OUTPUTS (Q_, Q__)

Single-Ended
Output High
Voltage

V

IHD

V

ILD

V

-

IHD

V

ILD

I

IH

I

ILD

I

ILD

V

OH

VCC - VEE ≤ 3.8V -100 +100 -100 +100 -100 +100

VCC - VEE ≥ 3.8V -140 +140 -140 +140 -140 +140

VCC - VEE ≤ 3.8V -150 +150 -150 +150 -150 +150

VCC - VEE ≥ 3.8V -175 +175 -175 +175 -175 +175

Figure 1

- 1.135

-40°C +25°C +85°C

MIN TYP MAX MIN TYP MAX MIN TYP MAX

V

EE

+ 1.2

V

EE

0.1 3.0 0.1 3.0 0.1 3.0 V

V

CC

V

V

CC

V

CC

- 0.1

150 150 150 µA

V

CC

- 0.885

EE

+ 1.2

V

EE

V

CC

- 1.07

V

V

- 0.1

V

- 0.82

CC

CC

CC

V

EE

+ 1.2

V

EE

V

CC

- 1.01

V

CC

V

CC

- 0.1

V

CC

- 0.76

UNITS

V

V

µA

µA

V

MAX9320B

1:2 Differential PECL/ECL/LVPECL/LVECL

Clock and Data Driver

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC- VEE= 3.0V to 5.5V, outputs loaded with 50Ω ±1% to VCC- 2V. Typical values are at VCC- VEE= 5.0V, V

IHD

= VCC- 1.0V, V

ILD

= VCC- 1.5V, unless otherwise noted.) (Notes 1, 2, 3)

AC ELECTRICAL CHARACTERISTICS

(VCC- VEE= 3.0V to 5.5V, outputs loaded with 50Ω ±1% to VCC- 2V, input frequency ≤ 1.5GHz, input transition time = 125ps (20% to
80%), V

IHD

= VEE+ 1.2V to VCC, V

ILD

= VEEto VCC- 0.15V, V

IHD

- V

ILD

= 0.15V to 3.0V. Typical values are at VCC- VEE= 5.0V, V

IHD

= VCC- 1V, V

ILD

= VCC- 1.5V, unless otherwise noted.) (Note 5)

PARAMETER SYMBOL CONDITIONS

Single-Ended
Output Low
Voltage

Differential
Output Voltage

POWER SUPPLY

Supply Current I

V

- V

V

OL

OH

EE

Figure 1

Figure 1 550 550 550 mV

OL

(Note 4) 20 28 22 28 23 30 mA

- 1.935

-40°C +25°C +85°C

MIN TYP MAX MIN TYP MAX MIN TYP MAX

V

CC

V

- 1.685

CC

V

CC

- 1.87

V

CC

- 1.62

V

CC

- 1.81

V

CC

- 1.56

UNITS

V

PARAMETER SYMBOL CONDITIONS

Differential
Input-to­Output Delay

t

PLHD

t

PHLD

MIN TYP MAX MIN TYP MAX MIN TYP MAX

,

Figure 1 145 220 265 155 208 265 160 203 270 ps

-40°C +25°C +85°C
UNITS

Output-to­Output Skew

Part-to-Part
Skew

Added
Random Jitter

Added
Deterministic
Jitter

t

SKOO

t

SKPP

t

t

(Note 6) 6 30 6 30 6 30 ps

(Note 7) 20 120 20 110 20 110 ps

fIN = 1.5GHz, clock
pattern (Note 8)

RJ

fIN = 3.0GHz, clock
pattern (Note 8)

3.0Gbps

23

2

DJ

(Note 8)

- 1 PRBS pattern

1.7 2.8 1.7 2.8 1.7 2.8

0.6 1.5 0.6 1.5 0.6 1.5

57 80 57 80 57 80

ps

(RMS)

ps

(

P-P

)