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Microcontrollers and Processors / Serial IO/Communication Controllers / XR68C681J
Datasheets
XR68C681J by:
Exar Corporation
Exar Corporation
MaxLinear Inc
Not Found

Serial I/O Controller, 2 Channel(s), 0.125MBps, CMOS, PQCC44, PLASTIC, LCC-44

Part Details for XR68C681J by Exar Corporation

Results Overview of XR68C681J by Exar Corporation

Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.

Applications Automotive

XR68C681J Information

XR68C681J by Exar Corporation is a Serial IO/Communication Controller.
Serial IO/Communication Controllers are under the broader part category of Microcontrollers and Processors.

Microcontrollers (MCUs) are small, low-power integrated circuits used to control embedded systems. Microcontrollers are primarily used to automate and control devices. Read more about Microcontrollers and Processors on our Microcontrollers and Processors part category page.

Price & Stock for XR68C681J

Part # Distributor Description Stock Price Buy
Quest Components 2 CHANNEL(S), 1MBPS, SERIAL COMM CONTROLLER, PQCC44 51
  • 1 $5.4300
  • 3 $3.6200
  • 8 $2.7150
$2.7150 / $5.4300 Buy Now
Quest Components 2 CHANNEL(S), 1MBPS, SERIAL COMM CONTROLLER, PQCC44 9
  • 1 $11.2500
  • 4 $8.2500
  • 10 $7.5000
$7.5000 / $11.2500 Buy Now
Quest Components 2 CHANNEL(S), 1MBPS, SERIAL COMM CONTROLLER, PQCC44 4
  • 1 $11.2500
  • 2 $7.5000
  • 4 $5.6250
$5.6250 / $11.2500 Buy Now
Quest Components 2 CHANNEL(S), 1MBPS, SERIAL COMM CONTROLLER, PQCC44 3
  • 1 $21.1122
  • 2 $19.7047
$19.7047 / $21.1122 Buy Now
ComSIT USA Electronic Component RoHS: Not Compliant Stock DE - 0
Stock ES - 13156
Stock US - 0
Stock MX - 0
Stock CN - 0
Stock HK - 0
RFQ

Part Details for XR68C681J

XR68C681J CAD Models

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XR68C681J Part Data Attributes

Parametric Data
XR68C681J Exar Corporation
Buy Now Datasheet
Compare Parts:
XR68C681J Exar Corporation Serial I/O Controller, 2 Channel(s), 0.125MBps, CMOS, PQCC44, PLASTIC, LCC-44
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Rohs Code No
Part Life Cycle Code Obsolete
Ihs Manufacturer EXAR CORP
Part Package Code LCC
Package Description QCCJ, LDCC44,.7SQ
Pin Count 44
Reach Compliance Code unknown
HTS Code 8542.31.00.01
Address Bus Width 4
Boundary Scan NO
Bus Compatibility MC68681; SCC68692
Clock Frequency-Max 4 MHz
Communication Protocol ASYNC, BIT
Data Encoding/Decoding Method NRZ
Data Transfer Rate-Max 0.125 MBps
External Data Bus Width 8
JESD-30 Code S-PQCC-J44
JESD-609 Code e0
Length 16.585 mm
Low Power Mode NO
Number of Serial I/Os 2
Number of Terminals 44
Operating Temperature-Max 85 °C
Operating Temperature-Min -40 °C
Package Body Material PLASTIC/EPOXY
Package Code QCCJ
Package Equivalence Code LDCC44,.7SQ
Package Shape SQUARE
Package Style CHIP CARRIER
Qualification Status Not Qualified
Screening Level MIL-STD-883
Seated Height-Max 4.57 mm
Supply Voltage-Max 5.25 V
Supply Voltage-Min 4.75 V
Supply Voltage-Nom 5 V
Surface Mount YES
Technology CMOS
Temperature Grade INDUSTRIAL
Terminal Finish TIN LEAD
Terminal Form J BEND
Terminal Pitch 1.27 mm
Terminal Position QUAD
Width 16.585 mm
uPs/uCs/Peripheral ICs Type SERIAL IO/COMMUNICATION CONTROLLER, SERIAL

Alternate Parts for XR68C681J

This table gives cross-reference parts and alternative options found for XR68C681J. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of XR68C681J, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
XR68C681CJ-F Exar Corporation Check for Price Serial I/O Controller, 2 Channel(s), 0.125MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44 XR68C681J vs XR68C681CJ-F
XR68C681J-F MaxLinear Inc Check for Price Serial I/O Controller, 2 Channel(s), 0.125MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44 XR68C681J vs XR68C681J-F
XR68C681CJ Exar Corporation Check for Price Serial I/O Controller, 2 Channel(s), 0.125MBps, CMOS, PQCC44, PLASTIC, LCC-44 XR68C681J vs XR68C681CJ

XR68C681J Related Parts

XR68C681J Frequently Asked Questions (FAQ)

  • It is recommended to follow a star topology for the power supply connections, keep the analog and digital grounds separate, and use a solid ground plane to minimize noise. Additionally, use short and direct traces for the clock and data lines, and avoid running them near noisy signals or power lines.

  • The XR68C681J has a thermal pad on the bottom of the package, which should be connected to a solid ground plane or a thermal heat sink to dissipate heat. Ensure good airflow around the device, and consider using thermal interface materials or heat sinks if operating in high-temperature environments.

  • The XR68C681J requires a minimum of 2-3 bypass capacitors, with a total capacitance of at least 10uF, placed as close as possible to the power pins. The capacitors should have a low ESR and be rated for the operating voltage of the device.

  • Start by verifying the power supply and clock signals, and ensure that the device is properly configured and initialized. Use oscilloscopes or logic analyzers to monitor the signals and identify any anomalies. Check for noise or interference on the data lines, and verify that the device is operating within its specified temperature range.

  • Yes, in high-reliability or safety-critical applications, it is essential to follow the recommended operating conditions, ensure proper thermal management, and implement robust error detection and correction mechanisms. Additionally, consider using redundant or fault-tolerant designs, and perform thorough testing and validation to ensure the device meets the required safety and reliability standards.