MAX9323 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – One-to-Four LVCMOS-to-LVPECL Output Clock and Data Driver

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 ✕ 4mm thin QFN
packages and operates over the extended (-40°C to
+85°C) temperature range. The MAX9323 is pin com-
patible with Integrated Circuit Systems’ ICS8535-01.
Applications
Precision Clock Distribution
Low-Jitter Data Repeater
Data and Clock Driver and Buffer
Central-Office Backplane Clock Distribution
DSLAM Backplane
Base Station
Hubs
Features
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°C to +85°C Operating Temperature Range
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX9323EUP
-40°C to +85°C 20 TSSOP
MAX9323ETP*
-40°C to +85°C 20 Thin QFN-EP**
*Future product—Contact factory for availability.
**EP = Exposed paddle.
Functional Diagram and Typical Operating Circuit appear at
end of data sheet.
Pin Configurations
TOP VIEW
CLK0 1
N.C. 2
CLK1 3
N.C. 4
N.C. 5
20 19 18 17 16
MAX9323
**EXPOSED PADDLE
15 VCC
14 Q1
13 Q1
12 Q2
11 Q2
6 7 8 9 10
THIN QFN-EP** (4mm x 4mm)
**CONNECT EXPOSED PADDLE TO GND.
GND 1
CLK_EN 2
CLK_SEL 3
CLK0 4
N.C. 5
CLK1 6
N.C. 7
N.C. 8
N.C. 9
V_CC 10
MAX9323
TSSOP
20 Q0
19 Q0
18 V_CC
17 Q1
16 Q1
15 Q2
14 Q2
13 V_CC
12 Q3
11 Q3
________________________________________________________________ Maxim Integrated Products 1
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