MAX9312 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – Dual 1:5 Differential LVPECL/LVECL/HSTL Clock and Data Drivers

19-2079; Rev 2; 4/09
Dual 1:5 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
General Description
The MAX9312/MAX9314 are low skew, dual 1-to-5 dif-
ferential drivers designed for clock and data distribu-
tion. These devices accept two inputs. Each input is
reproduced at five differential outputs. The differential
inputs can be adapted to accept single-ended inputs
by connecting the on-chip V_BB supply to one input as a
reference voltage.
The MAX9312/MAX9314 feature low part-to-part skew
(30ps) and output-to-output skew (12ps), making them
ideal for clock and data distribution across a backplane
or a board. For interfacing to differential HSTL and
LVPECL signals, these devices operate over a +2.25V
to +3.8V supply range, allowing high-performance clock
or 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.
The MAX9312 features an on-chip V_BB reference output
of 1.425V below the positive supply voltage. The
MAX9314 offers an on-chip V_BB reference output of
1.32V below the positive supply voltage.
Both devices are offered in an industry-standard 32-pin
7mm x 7mm LQFP package. In addition, the MAX9312
is offered in a space-saving 32-pin 5mm x 5mm TQFN
package.
Applications
Precision Clock Distribution
Low-Jitter Data Repeater
Features
o +2.25V to +3.8V Differential HSTL/LVPECL
Operation
o -2.25V to -3.8V Differential LVECL Operation
o 30ps (typ) Part-to-Part Skew
o 12ps (typ) Output-to-Output Skew
o 312ps (typ) Propagation Delay
o ≥ 300mV Differential Output at 3GHz
o On-Chip Reference for Single-Ended Inputs
o Output Low with Open Input
o Pin Compatible with MC100LVEP210 (MAX9312)
and MC100EP210 (MAX9314)
o Offered in Tiny QFN* Package (70% Smaller
Footprint than LQFP)
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX9312ECJ+
-40°C to +85°C 32 LQFP
MAX9312ETJ+
-40°C to +85°C 32 TQFN-EP*
MAX9314ECJ
-40°C to +85°C 32 LQFP
*Exposed pad.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Functional Diagram
QA0
QB0
V_CC
V_CC
QA0
QB0
75kΩ
QA1
75kΩ
QB1
CLKA
QA1
CLKB
QB1
CLKA
QA2
CLKB
QB2
QA2
QB2
75kΩ
75kΩ
75kΩ
75kΩ
QA3
QB3
V_EE V_EE
QA3
V_EE V_EE
QB3
V_BB
QA4
QB4
QA4
QB4
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.