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PDF 74F402PC Data sheet ( Hoja de datos )
| Número de pieza | 74F402PC | |
| Descripción | Serial Data Polynomial Generator/Checker | |
| Fabricantes | National | |
| Logotipo |  |
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www.DataSheet4U.com
January 1995
54F 74F402 Serial Data Polynomial
Generator Checker
General Description
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 sys-
tems A 4-bit control input selects one-of-six generator poly-
nomials The list of polynomials includes CRC-16 CRC-
CCITT and Ethernet as well as three other standard poly-
nomials (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 FAST devices and with all TTL
families
Features
Y Guaranteed 30 MHz data rate
Y Six selectable polynomials
Y Other polynomials available
Y Separate preset and clear controls
Y Expandable
Y Automatic right justification
Y Error output open collector
Y Typical applications
Floppy and other disk storage systems
Digital cassette and cartridge systems
Data communication systems
Commercial
Military
Package
Number
Package Description
74F402PC
N16E
16-Lead (0 300 Wide) Molded Dual-In-Line
54F402DM (Note 1)
J16A
16-Lead Ceramic Dual-In-Line
54F402FM (Note 1)
W16A
16-Lead Cerpack
54F402LM (Note 1)
E20A
20-Lead Ceramic Leadless Chip Carrier Type C
Note 1 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
Logic Symbol
Connection Diagrams
Pin Assignment
for DIP SOIC and Flatpak
Pin Assignment
for LCC
TL F 9535–4
TRI-STATE is a registered trademark of National Semiconductor Corporation
Ethernet is a registered trademark of Xerox Corporation
C1995 National Semiconductor Corporation TL F 9535
TL F 9535 – 1
TL F 9535 – 2
RRD-B30M105 Printed in U S A
1 page  
Applications (Continued)
TL F 9535 – 6
5
5 Page 
Physical Dimensions inches (millimeters) (Continued)
16-Lead (0 300 Wide) Molded Plastic Dual-In-Line Package (P)
NS Package Number N16E
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet 74F402PC.PDF ] | |
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