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XR68C681 Series 5 V 1 Mbps Surface Mount CMOS Dual UART - PLCC-44

Modèle ECAD:
Nom du fabricant: MaxLinear
Emballage standard:
Product Variant Information section
Code de date:
Product Specification Section
MaxLinear XR68C681CJTR-F - Caractéristiques techniques
Attributes Table
Data Rate: 1Mbps
No of Functions / Channels: 2
Interface Type: Parallel
Supply Voltage-Nom: 4.75V to 5.25V
Supply Current: 6mA
Clock Frequency-Max: 7.372MHz
Operating Temperature: 0°C to 70°C
Storage Temperature Range: -65°C to +150°C
Style d'emballage :  PLCC-44
Méthode de montage : Surface Mount
Fonctionnalités et applications

The XR68C681CJTR-F is a EXAR Dual Universal Asynchronous Receiver and Transmitter (DUART) is a data communications device that provides two fully independent full duplex asynchronous communications channels in a single package. The DUART is designed for use in microprocessor based systems and may be used in a polled or interrupt driven environment.

The XR-68C681 device offers a single IC solution for the 68000 family of microprocessors. The DUART is fabricated using advanced two layer metal, with a high performance density EPI/CMOS 1.8 process to provide high performance and low power consumption, and is packaged in a 40 pin DIP or a 44 pin PLCC.


  • Two Full Duplex, Independent Channels
  • Asynchronous Receiver and Transmitter
  • Quadruple-Buffered Receiver, Dual Buffered Transmitter
  • Programmable Stop Bits in 1/16 Bit Increments
  • Internal Bit Rate Generators with 23 Different Bit Rates
  • Independent Bit Rate Selection for Each Transmitter and Receiver
  • External Clock Capability
  • Maximum Bit Rate: 1X Clock - 1Mb/s, 16X Clock - 125 Kb/s
  • Normal, AUTOECHO, Local LOOPBACK and Remote LOOPBACK Modes
  • Multi-function 16 Bit Counter/Timer
  • Interrupt Output with Eight Maskable Interrupt Conditions
  • Interrupt Vector Output on Acknowledge
  • 8 General Purpose Outputs
  • 6 General Purpose Inputs with Change of States Detectors on Inputs
  • On-chip Oscillator for Crystal
  • Standby Mode to Reduce Operating Power
  • Compatible with the Motorola MC68681 and the Signetic SCC68692 Devices
  • Advanced CMOS Low Power Technology
  • Pb-Free, RoHS Compliant Versions Offered


  • Multimedia Systems
  • Serial to Parallel/Parallel to Serial Converter
  • DTE for Modem Communication Systems



Pricing Section
Stock global :
Sur commande :
Stock d'usine :Stock d'usine :
Délai d'usine :
9 Semaines
Commande minimale :
Multiples de :
2 950,00 $
Prix Internet
Product Variant Information section