54F402  Product Folder

The 'F402 expandable Serial Data Polynomial generator/checker is an expandable version of the 'F401. It provides an advanced tool for the implementation of the most widely used error detection scheme in serial digital handling systems. A 4-bit control input selects one-of-six generator polynomials. The list of polynomials includes CRC-16, CRC-CCITT and Ethernet®, as well as three other standard polynomials (56^th order, 48^th order, 32^nd order). Individual clear and preset inputs are provided for floppy disk and other applications. The Error output indicates whether or not a transmission error has occurred. The CWG Control input inhibits feedback during check word transmission. The 'F402 is compatible with FAST® devices and with all TTL families.

• Guaranteed 30 MHz data rate
• Six selectable polynomials
• Other polynomials available
• Separate preset and clear controls
• Expandable
• Automatic right justification
• Error output open collector
• Typical applications: Floppy and other disk storage systems Digital cassette and cartridge systems Data communication systems