MAX9400 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – Quad Differential LVECL/LVPECL Buffer/Receivers

19-2223; Rev 1; 1/02
Quad Differential LVECL/LVPECL
Buffer/Receivers
General Description
The MAX9400/MAX9402/MAX9403/MAX9405 are
extremely fast, low-skew quad LVECL/ECL or LVPECL/
PECL buffer/receivers designed for high-speed data
and clock driver applications. These devices feature an
ultra-low propagation delay of 335ps and channel-to-
channel skew of 16ps in asynchronous mode with
86mA supply current.
The four channels can be operated synchronously with
an external clock, or in asynchronous mode determined
by the state of the SEL input. An enable input provides
the ability to force all the outputs to a differential low
state.
A variety of input and output terminations are offered for
maximum design flexibility. The MAX9400 has open
inputs and open emitter outputs. The MAX9402 has
open inputs and 50Ω series outputs. The MAX9403 has
100Ω differential input impedance and open emitter
outputs. The MAX9405 has 100Ω differential input
impedance and 50Ω series outputs.
These devices operate with a supply voltage of (V_CC -
V_EE) = 2.375V to 5.5V, and are specified for operation
from -40°C to +85°C. These devices are offered in
space-saving 32-pin 5mm ✕ 5mm TQFP and 32-lead
5mm ✕ 5mm QFN packages.
Applications
Data and Clock Driver and Buffer
Central Office Backplane Clock Distribution
DSLAM Backplane
Base Station
ATE
Functional Diagram appears at end of data sheet.
Features
o 400mV Differential Output at 3.0GHz Data Rate
o 335ps Propagation Delay in Asynchronous Mode
o 8ps Channel-to-Channel Skew in Synchronous
Mode
o Integrated 50Ω Outputs (MAX9402/MAX9405)
o Integrated 100Ω Inputs (MAX9403/MAX9405)
o Synchronous/Asynchronous Operation
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
DATA
INPUT
OUTPUT
MAX9400EHJ -40°C to +85°C 32 TQFP Open Open
MAX9400EGJ* -40°C to +85°C 32 QFN Open Open
MAX9402EHJ -40°C to +85°C 32 TQFP Open 50Ω
MAX9402EGJ* -40°C to +85°C 32 QFN
MAX9403EHJ -40°C to +85°C 32 TQFP
Open
100Ω
50Ω
Open
MAX9403EGJ* -40°C to +85°C 32 QFN 100Ω Open
MAX9405EHJ -40°C to +85°C 32 TQFP 100Ω 50Ω
MAX9405EGJ* -40°C to +85°C 32 QFN 100Ω 50Ω
*Future product—contact factory for availability.
Pin Configurations
TOP VIEW
32 31 30 29 28 27 26 25
V_CC 1
SEL 2
SEL 3
CLK 4
CLK 5
EN 6
EN 7
V_CC 8
MAX9400
MAX9402
MAX9403
MAX9405
24 V_CC
23 OUT1
22 OUT1
21 V_EE
20 V_EE
19 OUT2
18 OUT2
17 V_CC
9 10 11 12 13 14 15 16
TQFP (5mm x 5mm)
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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