MAX9389EHJ+T Datasheet MAX9389EHJ+, MAX9389EHJ+T | P1-P3

General Description

The MAX9389 is a fully differential, high-speed, low-jitter,

8-to-1 ECL/PECL multiplexer (mux) with dual output

buffers. The device is designed for clock and data distri-

bution applications, and features extremely low propa-

gation delay (310ps typ) and output-to-output skew

(30ps max).

Three single-ended select inputs, SEL0, SEL1, and SEL2,

control the mux function. The mux select inputs are com-

patible with ECL/PECL logic, and are internally refer-

enced to the on-chip reference output (V

BB1

, V

BB2

nominally V

- 1.425V. The select inputs accept signals

between V

and V

. Internal pulldowns to V

ensure

a low default condition if the select inputs are left open.

The differential inputs D_, D_ can be configured to

accept a single-ended signal when the unused comple-

mentary input is connected to the on-chip reference

output (V

BB1

, V

BB2

). All the differential inputs have

internal bias and clamping circuits that ensure a low

output state when the inputs are left open.

The MAX9389 operates with a wide supply range V

of 2.375V to 5.5V. The device is offered in 32-pin

TQFP and thin QFN packages, and operates over the

-40°C to +85°C extended temperature range.

Applications

High-Speed Telecom and Datacom Applications

Central-Office Backplane Clock Distribution

DSLAM/DLC

Features

♦ 310ps Propagation Delay

♦ Guaranteed 2.7GHz Operating Frequency

♦ 0.3ps

RMS

Random Jitter

♦ <30ps Output-to-Output Skew

♦ -2.375V to -5.5V Supplies for Differential

LVECL/ECL

♦ +2.375V to +5.5V Supplies for Differential

LVPECL/PECL

♦ Outputs Low for Open Inputs

♦ Dual Output Buffers

♦ >2kV ESD Protection (Human Body Model)

MAX9389

Differential 8:1 ECL/PECL Multiplexer with

Dual Output Buffers

________________________________________________________________ Maxim Integrated Products 1

MAX9389

TQFP

TOP VIEW

32 28

293031

SEL2

1611 12

SEL0

24 SEL1

BB1

BB2

Pin Configurations

Ordering Information

BB1

BB2

MUX

8:1

180kΩ

180kΩ165kΩ 180kΩ

232kΩ

SEL0

SEL1

SEL2

MAX9389

Functional Diagram

19-2688; Rev 0; 1/03

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.

PART TEMP RANGE PIN-PACKAGE

MAX9389EHJ -40°C to +85°C 32 TQFP

MAX9389ETJ* -40°C to +85°C 32 Thin QFN

Pin Configurations continued at end of data sheet.

*Future product—contact factory for availability.

MAX9389

Differential 8:1 ECL/PECL Multiplexer with

Dual Output Buffers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

- V

= 2.375V to 5.5V, outputs loaded with 50Ω±1% to V

- 2V. Typical values are at V

- V

= 3.3V, V

IHD

= V

- 1V,

ILD

= V

- 1.5V, 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.

- V

..............................................................-0.3V to +6.0V

Inputs (D_, D_, SEL_) to V

......................-0.3V to (V

+ 0.3V)

D_ to D_...............................................................................±3.0V

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

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

_ Sink/Source Current ..............................................±600µA

Continuous Power Dissipation (T

= +70°C)

32-Lead TQFP (derate 13.1mW/°C above +70°C) ...1047mW

in Still Air..........................................................+76°C/W

.........................................................................+25°C/W

32-Lead QFN (derate 21.3mW/°C above +70°C) .....1702mW

in Still Air..........................................................+47°C/W

...........................................................................+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 (D_, D_, Q_, Q_, SEL_, V

_) .............≥2kV

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

-40°C +25°C +85°C

PARAMETER SYMBOL CONDITIONS

MIN TYP MAX MIN TYP MAX MIN TYP MAX

UNITS

INPUT (D_, D_, SEL_)

Single-Ended

Input High

Voltage

BB_

connected to the

unused input, Figure 1

1.225

0.880

1.225

0.880

1.225

0.880

Single-Ended

Input Low

Voltage

BB_

connected to the

unused input, Figure 1

1.945

1.625

1.945

1.625

1.945

1.625

Differential Input

High Voltage

IHD

Figure 1

1.2

Differential Input

Low Voltage

ILD

Figure 1 V

0.095

- V

3.0V

0.095

Differential Input

Voltage

IHD

ILD

Figure 1

- V

≥

3.0V

0.095 3.000 0.095 3.000 0.095 3.000

Input Current I

IH,

IL,

IHD,

ILD

-60 +60 -60 +60 -60 +60 µA

OUTPUT (Q_, Q_)

Single-Ended

Output High

Voltage

Figure 2

1.145

0.895

1.145

0.895

1.145

0.895

MAX9389

Differential 8:1 ECL/PECL Multiplexer with

Dual Output Buffers

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

- V

= 2.375V to 5.5V, outputs loaded with 50Ω±1% to V

- 2V. Typical values are at V

- V

= 3.3V, V

IHD

= V

- 1V,

ILD

= V

- 1.5V, unless otherwise noted.) (Notes 1–4)

-40°C +25°C +85°C

PARAMETER SYMBOL CONDITIONS

MIN TYP MAX MIN TYP MAX MIN TYP MAX

UNITS

Single-Ended

Output Low

Voltage

Figure 2

1.945

1.695

1.945

1.695

1.945

1.695

Differential

Output Voltage

Figure 2 650 830 650 840 650 840 mV

REFERENCE OUTPUT (V

)

Reference

Voltage Output

BB1

BB2

BB1

+ I

BB2

= ±0.5mA

(Note 5)

1.525

1.425

1.325

1.525

1.425

1.325

1.525

1.425

1.325

POWER SUPPLY

Supply Current I

(Note 6) 50 70 53 70 55 70 mA

AC ELECTRICAL CHARACTERISTICS

- V

= 2.375V to 5.5V, outputs loaded with 50Ω±1% to V

- 2V, V

IHD

- V

ILD

= 0.15V to 1V, f

≤ 2.5GHz, input duty cycle = 50%,

input transition time = 125ps (20% to 80%). Typical values are at V

- V

= 3.3V, V

IHD

= V

- 1V, V

ILD

= V

- 1.5V, f

= 622 MHz,

input duty cycle = 50%, input transition time = 125ps (20% to 80%.)) (Note 7)

-40°C +25°C +85°C

PARAMETER SYMBOL CONDITIONS

MIN TYP MAX MIN TYP MAX MIN TYP MAX

UNITS

Differential Input-

to-Output Delay

PLHD

PHLD

Figure 2 216 301 370 237 310 416 255 329 456 ps

SEL_-to-Output

Delay

PLH2

PHL2

Figure 4, input

transition time = 500ps

(20% to 80%) (Note 8)

1.34 2 1.25 2 1.44 2 ns

Output-to-Output

Skew

SKOO

Figure 5 (Note 9) 15 15 30 ps

Input-to-Output

Skew

SKIO

Figure 6 (Note 10) 50 50 55 ps

Part-to-Part

Skew

SKPP

(Note 11) 125 150 160 ps

= 156MHz 0.3 1.15 0.3 1.15 0.3 1.15

= 622MHz 0.3 1.15 0.3 1.15 0.3 1.15

Added Random

Jitter (Note 12)

Clock

pattern

= 2.5GHz 0.3 1.15 0.3 1.15 0.3 1.15

RMS

= 156Mbps 33 95 33 95 33 95

Added

Deterministic

Jitter (Note 12)

PRBS

- 1

= 622Mbps 21 61 21 61 21 61

P-P

P1-P3 P4-P6 P7-P9 P10-P10

MAX9389EHJ+T

Mfr. #:

Buy MAX9389EHJ+T

Manufacturer:

Maxim Integrated

Description:

Clock Drivers & Distribution MAX9389EHJ+T

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

MAX9389EHJ+T

MAX9389EHJ+T

Products related to this Datasheet