19-2152; Rev 2; 11/02
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
single-ended input by connecting the on-chip VBB sup-
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
Both devices are offered in space-saving 8-pin SOT23,
SO, and µMAX packages.
Precision Clock Buffers
Low-Jitter Data Repeaters
o Improved Second Source of the MC10LVEP16
o +2.25V to +3.8V Differential HSTL/LVPECL
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
MAX9321EKA-T -40°C to +85°C
MAX9321EUA* -40°C to +85°C
MAX9321ESA -40°C to +85°C
MAX9321AEKA-T -40°C to +85°C
MAX9321AEUA* -40°C to +85°C
MAX9321AESA -40°C to +85°C 8 SO-EP**
*Future product—contact factory for availability.
**EP = Exposed pad.
D 3 100kΩ
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.