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Anything-to-LVDS Dual 2 x 2 Crosspoint Switches

Dual, 2 x 2 Crosspoint Switches with Anything-to-LVDS Guarantee 1.50GHz Maximum Operating Frequency

Product Details

Key Features

Parametric specs for High-Speed Interconnect (Differential Signaling)
Signal Type (Rx) CML
HSTL
LVDS
LVPECL
Signal Type (Tx) LVDS
Functions Switch
# Rx 4
# Tx 4
Propagation Delay (ps) (max) 565
VSUPPLY (V) 3.3
Package/Pins TQFP/32
Budgetary
Price (See Notes)
9.12
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Simplified Block Diagram

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Parameters

Parametric specs for High-Speed Interconnect (Differential Signaling)
Signal Type (Rx) CML
HSTL
LVDS
LVPECL
Signal Type (Tx) LVDS
Functions Switch
# Rx 4
# Tx 4
Propagation Delay (ps) (max) 565
VSUPPLY (V) 3.3
Package/Pins TQFP/32
Budgetary
Price (See Notes)
9.12

Key Features

  • 1.5GHz Operation with 250mV Differential Output Swing
  • 2ps(RMS) (max) Random Jitter
  • AC Specifications Guaranteed for 150mV Differential Input
  • Signal Inputs Accept Any Differential Signaling Standard
  • LVDS Outputs for Clock or High-Speed Data
  • High-Level Input Fail-Safe Detection (MAX9390)
  • Low-Level Input Fail-Safe Detection (MAX9391)
  • 3.0V to 3.6V Supply Voltage Range
  • LVCMOS/LVTTL Logic Inputs Control Signal Routing

Applications/Uses

  • Central Office Backplane Clock Distribution
  • DSLAM
  • Fault-Tolerant Systems
  • High-Speed Telecom/Datacom Equipment
  • Protection Switching

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 differential signaling (LVDS) outputs for each channel. Independent enable inputs turn on or turn off each differential output pair.

Four LVCMOS/LVTTL logic inputs (two per channel) control 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 switching 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 100Ω loads. The MAX9390/MAX9391 are offered in a 32-pin TQFP package and operate over the extended temperature range (-40°C to +85°C).

Also refer to the MAX9392/MAX9393 with flow-through pinout.

Simplified Block Diagram

MAX9390, MAX9391: Typical Operating Circuit MAX9390, MAX9391: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.