
General Description
The MAX9326 low-skew, 1:9 differential driver features
extremely low output-to-output skew (50ps max) and
part-to-part skew (225ps max). These features make
the device ideal for clock and data distribution across a
backplane or board. The device repeats an HSTL or
LVECL/LVPECL differential input at nine differential out-
puts. Outputs are compatible with LVECL and LVPECL,
and directly drive 50
terminated transmission lines.
The differential inputs can be configured to accept a
single-ended signal when the unused complementary
input is connected to the on-chip reference output volt-
age VBB. All inputs have internal pulldown resistors to
VEE. The internal pulldowns and a fail-safe circuit
ensure differential low default outputs when the inputs
are left open or at VEE.
The MAX9326 operates over a +2.375V to +3.8V supply
range for interfacing to differential HSTL and LVPECL
signals. This allows high-performance clock or data dis-
tribution in systems with a nominal +2.5V or +3.3V sup-
ply. For LVECL operation, the device operates with a
-2.375V to -3.8V supply.
The MAX9326 is offered in 28-lead PLCC and space-
saving 28-lead QFN packages. The MAX9326 is speci-
fied for operation from -40°C to +85°C.
Applications
Precision Clock Distribution
Low-Jitter Data Repeaters
Features
o 50ps (max) Output-to-Output Skew
o 1.5psRMS (max) Random Jitter
o Guaranteed 300mV Differential Output at 1.0GHz
o +2.375V to +3.8V Supplies for Differential
HSTL/LVPECL
o -2.375V to -3.8V Supplies for Differential LVECL
o On-Chip Reference for Single-Ended Inputs
o Outputs Low for Inputs Open or at VEE
o Pin Compatible with MC100LVE111
MAX9326
1:9 Differential LVPECL/LVECL/HSTL Clock and
Data Driver
________________________________________________________________ Maxim Integrated Products
1
28
27
26
25
24
23
22
Q0
Q1
V
CC
Q1
Q2
8
9
10
11
12
13
14
Q8
Q7
V
CC
Q7
Q6
15
16
17
18
19
20
21
Q5
*CORNER PINS AND EXPOSED PAD ARE CONNECTED TO VEE.
Q5
Q4
VCC
Q4
Q3
7
6
5
4
3
2
1
N.C.
VBB
CLK
VCC
CLK
N.C.
VEE
MAX9326
QFN*
Q0
Q1
V
CC
Q2
Q8
V
CC
Q7
Q6
Q5
VCC
Q4
Q3
N.C.
VBB
VCC
CLK
N.C.
VEE
Q5
Q4
Q3
CLK
Q8
Q7
Q6
Q2
Q1
Q0
PLCC
TOP VIEW
56
7
8
9
10
11
22
23
24
25
19
20
21
12
13
14
15
16
17
18
26
27
28
1
2
3
4
MAX9326
Pin Configurations
Ordering Information
19-2538; Rev 2; 10/02
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.
Functional Diagram appears at end of data sheet.
PART
TEMP RANGE
PIN-PACKAGE
MAX9326EQI
-40°C to +85
°C
28 PLCC
MAX9326EGI
-40°C to +85
°C
28 QFN 5mm x 5mm