19-2576; Rev 0; 10/02
One-to-Five LVPECL/LVCMOS Output Clock and
Data Driver
General Description
Features
The MAX9324 low-skew, low-jitter, clock and data driver
distributes a differential LVPECL input to four differential
LVPECL outputs and one single-ended LVCMOS output.
All outputs default to logic low when the differential inputs
equal GND or are left open. The MAX9324 operates from
3.0V to 3.6V, making it ideal for 3.3V systems, and con-
sumes only 25mA (max) of supply current.
ꢀ 15ps Differential Output-to-Output Skew
ꢀ 1.7ps Added Random Jitter
RMS
ꢀ 150ps (max) Part-to-Part Skew
ꢀ 450ps Propagation Delay
ꢀ Synchronous Output Enable/Disable
ꢀ Single-Ended Monitor Output
The MAX9324 features low 150ps (max) part-to-part
skew, low 15ps output-to-output skew, and low 1.7ps
RMS jitter, making the device ideal for clock and data
distribution across a backplane or board. CLK_EN and
SEOUT_Z control the status of the various outputs.
Asserting CLK_EN low configures the differential (Q_,
Q_) outputs to a differential low condition and SEOUT to
a single-ended logic-low state. CLK_EN operation is
synchronous with the CLK_ inputs. A logic high on
SEOUT_Z places SEOUT in a high-impedance state.
SEOUT_Z is asynchronous with the CLK (CLK) inputs.
ꢀ Outputs Assert Low when CLK, CLK are Open or
at GND
ꢀ 3.0V to 3.6V Supply Voltage Range
ꢀ -40°C to +85°C Operating Temperature Range
Ordering Information
The MAX9324 is available in space-saving 20-pin
TSSOP and ultra-small 20-pin 4mm ✕ 4mm thin QFN
packages and operates over the extended (-40°C to
+85°C) temperature range.
PART
MAX9324EUP
MAX9324ETP*
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 TSSOP
20 Thin QFN-EP**
Applications
*Future product—Contact factory for availability.
**EP = Exposed paddle.
Precision Clock Distribution
Low-Jitter Data Repeater
Data and Clock Driver and Buffer
Central-Office Backplane Clock Distribution
DSLAM Backplane
Functional Diagram and Typical Operating Circuit appear at
end of data sheet.
Base Station
ATE
Pin Configurations
TOP VIEW
20 19 18 17 16
GND
CLK_EN
N.C.
1
2
20 Q0
19 Q0
V
1
2
3
4
5
15
14
13
12
11
SEOUT
GND
CC
3
18 V
CC
Q1
Q1
Q2
Q2
SEOUT
GND
4
17 Q1
16 Q1
15 Q2
MAX9324
N.C.
MAX9324
5
**EXPOSED PADDLE
SEOUT_Z
CLK
N.C.
6
SEOUT_Z
CLK
7
14
13
Q2
8
V
CC
6
7
8
9
10
CLK
9
12 Q3
11 Q3
V
10
CC
THIN QFN-EP** (4mm x 4mm)
**CONNECT EXPOSED PADDLE TO GND.
TSSOP
________________________________________________________________ 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.