19-2913; Rev 1; 5/07
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
General Description
Features
The MAX9392/MAX9393 dual 2 x 2 crosspoint switches
perform high-speed, low-power, and low-noise signal
distribution. The MAX9392/MAX9393 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.
♦ 1.5GHz Operation with 250mV Differential Output
Swing
♦ 2ps
(max) Random Jitter
RMS
♦ AC Specifications Guaranteed for 150mV
Differential Input
♦ Signal Inputs Accept Any Differential Signaling
Standard
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 MAX9392/MAX9393 ideal for protection
switching in fault-tolerant systems, loopback switching for
diagnostics, fanout buffering for clock/data distribution,
and signal regeneration.
♦ LVDS Outputs for Clock or High-Speed Data
♦ High-Level Input Fail-Safe Detection (MAX9392)
♦ Low-Level Input Fail-Safe Detection (MAX9393)
♦ 3.0V to 3.6V Supply Voltage Range
♦ LVCMOS/LVTTL Logic Inputs Control Signal
Routing
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
MAX9392 provides high-level input fail-safe detection
for LVDS, HSTL, and other GND-referenced differential
inputs. The MAX9393 provides low-level input fail-safe
Ordering Information
PIN-
PACKAGE
PKG
CODE
PART
TEMP RANGE
MAX9392EHJ
MAX9392EHJ+
MAX9393EHJ
MAX9393EHJ+
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
32 TQFP
32 TQFP
32 TQFP
32 TQFP
H32-1
H32-1
H32-1
H32-1
detection for LVPECL, CML, and other V -referenced
CC
differential inputs.
Ultra-low 98ps
(max) pseudorandom bit sequence
(P-P)
(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 67ps (max) skew between channels.
+Denotes a lead-free package.
Pin Configurations
TOP VIEW
LVDS inputs and outputs are compatible with the
TIA/EIA-644 LVDS standard. The LVDS outputs drive
100Ω loads. The MAX9392/MAX9393 are offered in
a 32-pin TQFP package and operate over the extended
temperature range (-40°C to +85°C).
32 31 30 29 28 27 26 25
+
GND 1
24 V
CC
Also see the MAX9390/MAX9391 for the crossflow version.
OUTA0
23
INB0
INB0
2
3
22 OUTA0
21 ENA0
20 GND
Applications
High-Speed Telecom/Datacom Equipment
Central-Office Backplane Clock Distribution
DSLAM
BSEL0 4
MAX9392
MAX9393
V
5
6
7
8
CC
19 OUTA1
18 OUTA1
17 ENA1
INB1
INB1
BSEL1
Protection Switching
Fault-Tolerant Systems
9
10 11 12 13 14 15 16
Functional Diagram and Typical Operating Circuit appear at
end of data sheet.
TQFP
________________________________________________________________ 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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