MAX3840:+3.3V, 2.7Gbps Dual 2 x 2 Crosspoint Switch

2.7Gbps 2 x 2 Crosspoint Switch

The MAX3840 is a dual 2 x 2 asynchronous crosspoint switch for SDH/SONET DWDM and other high-speed data switching applications where serial data stream loop-through and protection channel switching are required. It is ideal for OC-48 systems with forward error correction. A high-bandwidth, fully differential signal path minimizes jitter accumulation, crosstalk, and signal skew. Each 2 x 2 crosspoint switch can fan out and/or multiplex up to 2.7Gbps data and 2.7GHz clock signals. All inputs and outputs are current mode logic (CML) compatible and easily adaptable to interface with an AC-coupled LVPECL signal. When not used, each CML output stage can be powered down with an enable control to conserve power. The typical power consumption is 460mW with all outputs enabled. The MAX3840 is compatible with the MAX3876 2.5Gbps clock and data recovery (CDR) circuit. The MAX3840 is available in a 32-pin exposed-pad QFN package (5mm x 5mm footprint) and operates from a +3.3V supply over a temperature range of -40°C to +85°C.

Key Features
  • Single +3.3V Supply
  • 460mW Power Consumption
  • 2psRMS Random Jitter
  • 7psP-P Deterministic Jitter
  • Power-Down Feature for Deselected Outputs
  • CML Inputs/Outputs
  • 6ps Channel-to-Channel Skew
  • 100ps Output Edge Speed
  • 5mm x 5mm 32 QFN or Thin QFN Package
MAX3840: Typical Application Circuit
MAX3840: Typical Application Circuit
Applications/Uses
  • Add/Drop Multiplexers
  • ATM Switch Cores
  • High-Speed Backplanes
  • SDH/SONET and DWDM Transport Systems
  • WDM Cross-Connects
DataSheet
titleDownload file
MAX3840 Data SheetMAX3840.pdf
Parametrics
Part NumberSignal TypeSignal TypeFunctionsRxTxData Rates
(Mbps)
VSUPPLY
(V)
Package/PinsBudgetary
Price
RxTxSee Notes
MAX3840CMLCMLSwitch4427003.3QFN/32
TQFN/32
$8.83 @1k
Design kits & evaluation modules
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3840EGJNo Longer AvailableMAX3840ETJ+QFN,;32 pin;26 mm²-40°C to +85°CNo
MAX3840EGJ-TNo Longer AvailableMAX3840ETJ+QFN,;32 pin;26 mm²-40°C to +85°CNo
MAX3840ETJ+ActiveTQFN,;32 pin;26 mm²-40°C to +85°CLead Free
MAX3840ETJ+TActiveTQFN,;32 pin;26 mm²-40°C to +85°CLead Free
MAX3840.pdf MAX3840
MAX3840_cn.pdf MAX3840
MAX3840.pdf MAX3840
MAX3840.pdf MAX3840
MAX3840: Line and System Loopback with the MAX3840 MAX3840
MAX3840.pdf MAX3840
MAX3840_cn.pdf MAX3840