19-2575; Rev 0; 10/02
One-to-Four LVCMOS-to-LVPECL
Output Clock and Data Driver
General Description
The MAX9323 low-skew, low-jitter, clock and data dri-
ver distributes one of two single-ended LVCMOS inputs
to four differential LVPECL outputs. A single logic con-
trol signal (CLK_SEL) selects the input signal to distrib-
ute to all outputs. The device operates from 3.0V to
3.6V, making the device ideal for 3.3V systems, and
consumes only 25mA (max) of supply current.
The MAX9323 features low 150ps part-to-part skew, low
11ps output-to-output skew, and low 1.7ps RMS jitter,
making the device ideal for clock and data distribution
across a backplane or board. All outputs are enabled
and disabled synchronously with the clock input to pre-
vent partial output clock pulses.
The MAX9323 is available in space-saving 20-pin
TSSOP and ultra-small 20-pin 4mm
鉁?/div>
4mm thin QFN
packages and operates over the extended (-40擄C to
+85擄C) temperature range. The MAX9323 is pin com-
patible with Integrated Circuit Systems鈥?ICS8535-01.
o
1.7ps
RMS
Added Random Jitter
o
150ps (max) Part-to-Part Skew
o
11ps Output-to-Output Skew
o
450ps Propagation Delay
o
Pin Compatible with ICS8535-01
o
Consumes Only 25mA (max) Supply Current
(50% Less than ICS8535-01)
o
Synchronous Output Enable/Disable
o
Two Selectable LVCMOS Inputs
o
3.0V to 3.6V Supply Voltage Range
o
-40擄C to +85擄C Operating Temperature Range
Features
MAX9323
Ordering Information
PART
MAX9323EUP
TEMP RANGE
-40擄C to +85擄C
PIN-PACKAGE
20 TSSOP
Applications
Precision Clock Distribution
Low-Jitter Data Repeater
Data and Clock Driver and Buffer
Central-Office Backplane Clock Distribution
DSLAM Backplane
Base Station
Hubs
MAX9323ETP*
-40擄C to +85擄C
20 Thin QFN-EP**
*Future
product鈥擟ontact factory for availability.
**EP
= Exposed paddle.
Functional Diagram and Typical Operating Circuit appear at
end of data sheet.
Pin Configurations
CLK_SEL
CLK_EN
GND
Q0
17
Q0
16
GND 1
CLK0 1
N.C. 2
CLK1 3
N.C. 4
N.C. 5
15 V
CC
14 Q1
CLK_EN 2
CLK_SEL 3
CLK0 4
N.C. 5
12 Q2
11 Q2
CLK1 6
N.C. 7
N.C. 8
6
N.C.
7
V
CC
8
Q3
9
Q3
10
V
CC
N.C. 9
V
CC
10
12 Q3
11 Q3
20 Q0
19 Q0
18 V
CC
17 Q1
TOP VIEW
20
19
18
MAX9323
**EXPOSED PADDLE
13 Q1
MAX9323
16 Q1
15 Q2
14 Q2
13 V
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鈥檚 website at www.maxim-ic.com.
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