MAX9390 Datasheet PDF


Part Number

MAX9390

Description

Anything-to-LVDS Dual 2 x 2 Crosspoint Switches

Manufacture

Maxim

Total Page 14 Pages
PDF Download
Download MAX9390 Datasheet PDF


Features Datasheet pdf 19-2829; Rev 1; 7/03 Anything-to-LVDS D ual 2 x 2 Crosspoint Switches General D escription The MAX9390/MAX9391 dual 2 x 2 crosspoint switches perform high-spe ed, low-power, and low-noise signal dis tribution. The MAX9390/MAX9391 multiple x one of two differential input pairs t o either or both low-voltage differenti al signaling (LVDS) outputs for each ch annel. Independent enable inputs turn o n or turn off each differential output pair. Four LVCMOS/LVTTL logic inputs (t wo per channel) control the internal co nnections between inputs and outputs. T his flexibility allows for the followin g configurations: 2 x 2 crosspoint swit ch, 2:1 mux, 1:2 splitter, or dual repe ater. This makes the MAX9390/MAX9391.
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MAX9390 Datasheet
19-2829; Rev 1; 7/03
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
General Description
The MAX9390/MAX9391 dual 2 x 2 crosspoint switches
perform high-speed, low-power, and low-noise signal
distribution. The MAX9390/MAX9391 multiplex one of two
differential input pairs to either or both low-voltage differ-
ential signaling (LVDS) outputs for each channel.
Independent enable inputs turn on or turn off each differ-
ential output pair.
Four LVCMOS/LVTTL logic inputs (two per channel) con-
trol the internal connections between inputs and outputs.
This flexibility allows for the following configurations: 2 x 2
crosspoint switch, 2:1 mux, 1:2 splitter, or dual repeater.
This makes the MAX9390/MAX9391 ideal for protection
switching in fault-tolerant systems, loopback switching for
diagnostics, fanout buffering for clock/data distribution,
and signal regeneration.
Fail-safe circuitry forces the outputs to a differential low
condition for undriven inputs or when the common-
mode voltage exceeds the specified range. The
MAX9390 provides high-level input fail-safe detection
for LVDS, HSTL, and other GND-referenced differential
inputs. The MAX9391 provides low-level input fail-safe
detection for LVPECL, CML, and other VCC-referenced
differential inputs.
Ultra-low 82ps(P-P) (max) pseudorandom bit sequence
(PRBS) jitter ensures reliable communications in high-
speed links that are highly sensitive to timing error,
especially those incorporating clock-and-data recovery,
or serializers and deserializers. The high-speed switch-
ing performance guarantees 1.5GHz operation and less
than 65ps (max) skew between channels.
LVDS inputs and outputs are compatible with the
TIA/EIA-644 LVDS standard. The LVDS outputs drive
100loads. The MAX9390/MAX9391 are offered in a
32-pin TQFP and 5mm x 5mm thin QFN package with
exposed paddle and operate over the extended tem-
perature range (-40°C to +85°C).
Also refer to the MAX9392/MAX9393 with flow-through
pinout.
Applications
High-Speed Telecom/Datacom Equipment
Central-Office Backplane Clock Distribution
DSLAM
Protection Switching
Fault-Tolerant Systems
Functional Diagram and Typical Operating Circuit appear at
end of data sheet.
Features
o 1.5GHz Operation with 250mV Differential Output
Swing
o 2ps(RMS) (max) Random Jitter
o AC Specifications Guaranteed for 150mV
Differential Input
o Signal Inputs Accept Any Differential Signaling
Standard
o LVDS Outputs for Clock or High-Speed Data
o High-Level Input Fail-Safe Detection (MAX9390)
o Low-Level Input Fail-Safe Detection (MAX9391)
o +3.0V to +3.6V Supply Voltage Range
o LVCMOS/LVTTL Logic Inputs Control Signal
Routing
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX9390EHJ
-40°C to +85°C
32 TQFP
MAX9390ETJ*
-40°C to +85°C
32 Thin QFN
MAX9391EHJ
-40°C to +85°C
32 TQFP
MAX9391ETJ*
-40°C to +85°C
32 Thin QFN
*Future product—contact factory for availability.
Pin Configurations
TOP VIEW
32 31 30 29 28 27 26 25
ENB1 1
OUTB1 2
OUTB1 3
GND 4
ENB0 5
OUTB0 6
OUTB0 7
VCC 8
MAX9390
MAX9391
24 VCC
23 OUTA0
22 OUTA0
21 ENA0
20 GND
19 OUTA1
18 OUTA1
17 ENA1
9 10 11 12 13 14 15 16
TQFP
Pin Configurations continued at end of data sheet.
________________________________________________________________ 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.




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