Differential LVPECL/LVECL/HSTL Receiver/Drivers - Maxim
Description
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 distribution.
The differential input can be adapted to accept a single-ended input by connecting the on-chip VBB supply 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 differential HSTL and LVPECL signals, these devices operate over a +2.
25V to +3.
8V supply range, allowing high-performance clock and data distribution in systems with a nominal +2.
5V or +3.
3V supply.
For differential 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.
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
MAX9321/MAX9321A
Ordering Information Applications
Precision Clock Buffers Low-Jitter Data Repeaters
PART MAX9321EKA-T MAX9321EUA* MAX9321ESA MAX9321AEUA* MAX9321AESA TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PINPACKAGE 8 SOT23-8 8 µMAX 8 SO 8 SOT23-8 8 µMAX 8 SO-EP** TOP MARK AALK — — AAIX — —
MAX9321AEKA-T -40°C to +85°C
*Future product—contact factory for availability.
**EP = Exposed pad.
Pin Configurations
VCC 1 VEE 2 D 3 D 4 VEE
MAX9321
VCC 60kΩ 100kΩ 100kΩ
8 Q 7 Q 6 N.
C.
5 VBB
...
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