General Description

The MAX9321/MAX9321A are low-skew differential

receiver/drivers designed for clock and data distribu-

tion. The differential input can be adapted to accept a

ply to an input as a reference voltage.

The MAX9321/MAX9321A feature ultra-low propagation

delay (172ps) and part-to-part skew (20ps) with 24mA

maximum supply current, making these devices ideal

for clock buffering or repeating. For interfacing to differ-

ential HSTL and LVPECL signals, these devices oper-

ate over a +2.25V to +3.8V supply range, allowing

high-performance clock and data distribution in sys-

tems with a nominal +2.5V or +3.3V supply. For differ-

ential LVECL operation, these devices operate from a

-2.25V to -3.8V supply. Multiple pinouts are provided to

simplify routing across a backplane to either side of a

double-sided board.

Both devices are offered in space-saving 8-pin SOT23,

SO, and µMAX packages.

Applications

Precision Clock Buffers

Low-Jitter Data Repeaters

Features

o Improved Second Source of the MC10LVEP16

(MAX9321)

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

Operation

o -2.25V to -3.8V Differential LVECL Operation

o Low 17mA Supply Current

o 20ps Part-to-Part Skew

o 172ps Propagation Delay

o Minimum 300mV Output at 3GHz

o Output Low for Open Input

o ESD Protection >2kV (Human Body Model)

o On-Chip Reference for Single-Ended Input

o Available in Thermally Enhanced Exposed-Pad

SO Package

Differential LVPECL/LVECL/HSTL

Receiver/Drivers

________________________________________________________________ Maxim Integrated Products

1

SOT23

6

µMAX/SO

N.C. 1

2

3

4

8

Q

7 Q

MAX9321

D

6

D

D

D

1

2

3

4

8

N.C.

7 Q

Q

MAX9321

60k

Ω

60k

Ω

100k

Ω

100k

Ω

100k

Ω

100k

Ω

Pin Configurations

19-2152; Rev 2; 11/02

Ordering Information

*Future product—contact factory for availability.

**EP = Exposed pad.

PART

TEMP

RANGE

PIN-

PACKAGE

TOP

MARK

MAX9321EKA-T

-40°C to +85°C

8 SOT23-8

AALK

MAX9321EUA*

-40°C to +85°C

8 µMAX

—

MAX9321ESA

-40°C to +85°C

8 SO

—

MAX9321AEKA-T

-40°C to +85°C

8 SOT23-8

AAIX

MAX9321AEUA*

-40°C to +85°C

8 µMAX

—

MAX9321AESA

-40°C to +85°C

8 SO-EP**

—

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.

Pin Configurations continued at end of data sheet.