19-2152; Rev 2; 11/02
Differential LVPECL/LVECL/HSTL
Receiver/Drivers
General Description
Features
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
ꢀ Improved Second Source of the MC10LVEP16
(MAX9321)
ꢀ +2.25V to +3.8V Differential HSTL/LVPECL
single-ended input by connecting the on-chip V sup-
BB
Operation
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.
ꢀ -2.25V to -3.8V Differential LVECL Operation
ꢀ Low 17mA Supply Current
ꢀ 20ps Part-to-Part Skew
ꢀ 172ps Propagation Delay
ꢀ Minimum 300mV Output at 3GHz
ꢀ Output Low for Open Input
ꢀ ESD Protection >2kV (Human Body Model)
ꢀ On-Chip Reference for Single-Ended Input
ꢀ Available in Thermally Enhanced Exposed-Pad
Both devices are offered in space-saving 8-pin SOT23,
SO, and µMAX packages.
SO Package
Ordering Information
TEMP
RANGE
PIN-
PACKAGE
TOP
MARK
Applications
PART
Precision Clock Buffers
MAX9321EKA-T -40°C to +85°C
8 SOT23-8
8 µMAX
AALK
—
Low-Jitter Data Repeaters
MAX9321EUA*
MAX9321ESA
-40°C to +85°C
-40°C to +85°C
8 SO
—
MAX9321AEKA-T -40°C to +85°C
8 SOT23-8
8 µMAX
AAIX
—
MAX9321AEUA* -40°C to +85°C
MAX9321AESA
-40°C to +85°C
8 SO-EP**
—
*Future product—contact factory for availability.
**EP = Exposed pad.
Pin Configurations
V
Q
Q
N.C.
D
V
1
2
3
4
8
7
1
2
3
4
8
7
MAX9321
CC
CC
MAX9321
V
CC
V
CC
60kΩ
Q
V
EE
60kΩ
100kΩ
100kΩ
N.C.
Q
V
D
6
5
6
5
D
100kΩ
100kΩ
V
D
V
BB
EE
BB
V
EE
SOT23
Pin Configurations continued at end of data sheet.
µMAX/SO
________________________________________________________________ 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.