MAXIM MAX9310 User Manual

General Description

The MAX9310 is a fast, low-skew 1:5 differential driver
with selectable LVPECL/HSTL inputs and LVDS out­puts, designed for clock distribution applications. This
device features an ultra-low propagation delay of 345ps
with 45.5mA of supply current.

The MAX9310 operates from a 2.375V to 2.625V power
supply for use in 2.5V systems. A 2:1 input multiplexer
is used to select one of two differential inputs. The input
selection is controlled through the CLKSEL pin. This
device also features a synchronous enable function.

The MAX9310 is offered in a space-saving 20-pin
TSSOP package and operates over the extended tem­perature range from -40°C to +85°C.

Applications

Data and Clock Drivers and Buffers

Central-Office Backplane Clock Distribution

DSLAM

Base Stations

ATE

Features

♦ Guaranteed 1.0GHz Operating Frequency

♦ 8ps Output-to-Output Skew

♦ 345ps Propagation Delay

♦ Accepts LVPECL and Differential HSTL Inputs

♦ Synchronous Output Enable/Disable

♦ Two Selectable Differential Inputs

♦ 2.375V to 2.625V Supply Voltage

♦ ESD Protection: ±2kV (Human Body Model)

♦ Input Bias Resistors Drive Output Low for Open

Inputs

MAX9310

1:5 Clock Driver with Selectable

LVPECL Inputs and LVDS Outputs

________________________________________________________________ Maxim Integrated Products 1

20

19

18

17

16

15

14

13

1

2

3

4

5

6

7

8

V

CC

EN

V

CC

CLK1Q1

Q1

QO

Q0

TOP VIEW

CLK1

I.C.

CLK0

CLK0Q3

Q3

Q2

Q2

12

11

9

10

CLKSEL

GNDQ4

Q4

MAX9310

TSSOP

Pin Configuration

Ordering Information

100Ω

MAX9310

ZO = 50Ω

Z

O

= 50Ω

RECEIVER

Q_

Q_

Typical Application Circuit

19-2541; Rev 0; 7/02

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-PACKAGE

MAX9310EUP -40°C to +85°C 20 TSSOP

MAX9310

1:5 Clock Driver with Selectable
LVPECL Inputs and LVDS Outputs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC- GND = 2.375V to 2.625V, outputs terminated with 100Ω±1%, unless otherwise noted. Typical values are at VCC- GND = 2.5V,
V

IHD

= VCC- 1.0V, V

ILD

= VCC- 1.5V, 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 GND...........................................................-0.3V to +4.1V

EN, CLKSEL, CLK_, CLK_, to GND............-0.3V to (VCC+ 0.3V)

CLK_ to CLK_ ...........................................................|V

CC

- GND|

Continuous Output Current .................................................24mA

Surge Output Current..........................................................50mA

Continuous Power Dissipation (T

A

= +70°C)
Single-Layer PC Board

20-Pin TSSOP (derate 7.69mW/°C above +70°C) ......615mW

Multilayer PC Board

20-Pin TSSOP (derate 11mW/°C above +70°C) .........879mW

Junction-to-Ambient Thermal Resistance in Still Air

Single-Layer PC Board

20-Pin TSSOP .........................................................+130°C/W

Multilayer PC Board

20-Pin TSSOP ...........................................................+91°C/W

Junction-to-Ambient Thermal Resistance with 500LFPM

Airflow Single-Layer PC board

20-Pin TSSOP ...........................................................+96°C/W

Junction-to-Case Thermal Resistance

20-Pin TSSOP ...........................................................+20°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

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

-40°C +25°C +85°C

PARAMETER

UNITS

SINGLE-ENDED INPUTS (CLKSEL, EN)

Input High
Voltage

V

IH

VCC -

VCC -

VCC -

VCC -

VCC -

VCC -

V

Input Low
Voltage

V

IL

VCC -

VCC -

VCC -

VCC -

VCC -

VCC -

V

Input Current I

IN

V

IH(MAX)

,

V

IL(MAX)

µA

DIFFERENTIAL INPUTS (CLK_, CLK_)

Differential Input
High Voltage

V

IHD

Figure 1

V

Differential Input
Low Voltage

V

ILD

Figure 1

VCC -

VCC -

VCC -

V

Differential Input
Voltage

V

ID

V

IHD

- V

ILD

V

Input Current

CLK_, or CLK_ =
V

IHD

or V

ILD

µA

OUTPUTS (Q_, Q_)

Output High
Voltage

V

OH

Figure 1

1.6 V

Output Low
Voltage

V

OL

Figure 1

V

Differential
Output Voltage

V

OD

VOH - VOL,
Figure 1

mV

SYMBOL CONDITIONS

MIN TYP MAX MIN TYP MAX MIN TYP MAX

IIH, I

IL

1.165

1.81

-150 +50 -150 +50 -150 +50

1.2 V

GND

0.095 V

-60 +50 -60 +50 -60 +60

0.9 0.9 0.9

250 350 450 250 350 450 250 350 450

0.88

1.165

1.475

0.095

1.81

1.2 V

CC

CC

1.6 1.6

GND

0.095 V

0.88

1.475

CC

0.095

CC

1.165

1.81

1.2 V

GND

0.095 V

0.88

1.475

CC

0.095

CC

MAX9310

1:5 Clock Driver with Selectable

LVPECL Inputs and LVDS Outputs

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC- GND = 2.375V to 2.625V, outputs terminated with 100Ω±1%, unless otherwise noted. Typical values are at VCC- GND = 2.5V,
V

IHD

= VCC- 1.0V, V

ILD

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

AC ELECTRICAL CHARACTERISTICS

(VCC- GND = 2.375V to 2.625V, outputs terminated with 100Ω±1%, fIN≤ 1.0GHz, input transition time = 125ps (20% to 80%),
V

IHD

- V

ILD

= 0.15V to VCC, unless otherwise noted. Typical values are at VCC- GND = 2.5V, V

IHD

= VCC- 1.0V, V

ILD

= VCC- 1.5V,

unless otherwise noted.) (Notes 1 and 5)

-40°C +25°C +85°C

PARAMETER

SYMBOL

CONDITIONS

UNITS

Change in V

OD

Between
Complementary
Output States

∆V

OD

40 40 40

mV

Output Offset
Voltage

V

OS

mV

Change in V

OS

Between
Complementary
Output States

25 25 25

mV

12 12 12

Output Short­Circuit Current

I

OSC

Q_ or Q_ shorted
to GND

28 28 28

mA

POWER SUPPLY

Power-Supply
Current

I

CC

(Note 4)

75

75

75

mA

MIN TYP MAX MIN TYP MAX MIN TYP MAX

1.125 1.25 1.375 1.125 1.25 1.375 1.125 1.25 1.375

∆V

OCM

Q_ shorted to Q_

42

45.5

48.5

PARAMETER SYMBOL CONDITIONS

Propagation
Delay CLK_,
CLK_ to Q_, Q_

Output-to­Output Skew

Part-to-Part
Skew

Added Random
Jitter

Added
Deterministic
Jitter

-40°C +25°C +85°C

MIN TYP MAX MIN TYP MAX MIN TYP MAX

,

t

PHL

t

PLH

t

SKOO

t

SKPP

t

t

Figure 1 250 335 600 250 345 600 250 345 600 ps

(Note 6) 10 25 8 25 5 25 ps

(Note 7) 145 145 145 ps

fIN = 1.0GHz,
clock pattern

RJ

(Note 8)

fIN = 1.0Gsps,

23

- 1 PRBS

2

DJ

pattern (Note 8)

0.4 1.0 0.4 1.0 0.4 1.0

41 52 41 52 41 52

UNITS

ps

(RMS)

ps

(P-P)