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74F401PC Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part # 74F401PC
Description  CRC Generator/Checker
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74F401PC Datasheet(HTML) 1 Page - Fairchild Semiconductor

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© 1999 Fairchild Semiconductor Corporation
DS009534
www.fairchildsemi.com
April 1988
Revised August 1999
74F401
CRC Generator/Checker
General Description
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-of-
eight generator polynomials. The list of polynomials
includes CRC-16 and CRC-CCITT as well as their recipro-
cals (reverse polynomials). Automatic right justification is
incorporated for polynomials of degree less than 16. Sepa-
rate 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 compatible with all TTL families.
Features
s Eight selectable polynomials
s Error indicator
s Separate preset and clear controls
s Automatic right justification
s Fully compatible with all TTL logic families
s 14-pin package
s 9401 equivalent
s Typical applications:
Floppy and other disk storage systems
Digital cassette and cartridge systems
Data communication systems
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
Order Number
Package Number
Package Description
74F401SC
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
74F401PC
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide


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