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74F402


Part Number 74F402
Manufacturer Fairchild
Title Serial Data Polynomial Generator/Checker
Description The 74F402 expandable Serial Data Polynomial generator/ checker is an expandable version of the 74F401. It provides an advanced tool for the imple...
Features s Guaranteed 30 MHz data rate s Six selectable polynomials s Other polynomials available s Separate preset and clear controls s Expandable s Automatic right justification s Error output open collector s Typical applications: Floppy and other disk storage systems Digital cassette and cartridge system...

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74F401 : The 74F401 Cycle Redundancy Check (CRC) Generator/ Checker provides an advanced tool for implementing the most widely used error detection scheme in serial digital data handling systems. A 3-bit control input selects one-ofeight generator polynomials. The list of polynomials includes CRC-16 and CRC-CCITT as well as their reciprocals (reverse polynomials). Automatic right justification is incorporated for polynomials of degree less than 16. Separate clear and preset inputs are provided for floppy disk and other applications. The Error output indicates whether or not a transmission error has occurred. Another control input inhibits feedback during check word transmission. The 74F401 is fully c.

74F402 : 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 CRCCCITT and Ethernet as well as three other standard polynomials (56th order 48th order 32nd 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.

74F403A : The 74F403A is an expandable fall-through type highspeed First-In First-Out (FIFO) Buffer Memory optimized for high-speed disk or tape controllers and communication buffer applications. It is organized as 16-words by 4-bits and may be expanded to any number of words or any number of bits in multiples of four. Data may be entered or extracted asynchronously in serial or parallel, allowing economical implementation of buffer memories. The 74F403A has 3-STATE outputs which provide added versatility and is fully compatible with all TTL families. Features s Serial or parallel input s Serial or parallel output s Expandable without external logic s 3-STATE outputs s Fully compatible with all TTL f.




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