MAX9321 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – Differential LVPECL/LVECL/HSTL Receiver/Drivers

19-2152; Rev 2; 11/02
Differential LVPECL/LVECL/HSTL
Receiver/Drivers
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
single-ended input by connecting the on-chip V_BB 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
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
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
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
8 SOT23-8
8 µMAX
8 SO
8 SOT23-8
8 µMAX
MAX9321AESA -40°C to +85°C 8 SO-EP**
*Future product—contact factory for availability.
**EP = Exposed pad.
TOP
MARK
AALK
—
—
AAIX
—
—
Pin Configurations
V_CC 1
MAX9321
8Q
V_CC
V_EE 2
60kΩ
7Q
D 3 100kΩ
100kΩ
D4
V_EE
SOT23
6 N.C.
5 VBB
Pin Configurations continued at end of data sheet.
N.C. 1
D2
D3
V_BB 4
MAX9321
V_CC
60kΩ
100kΩ
100kΩ
µMAX/SO
8 VCC
7Q
6Q
5 VEE
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