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74F401SC, 74F402PC, 74F403DC

Table of contents:
Info of 74F401SC
Info of 74F402PC
Info of 74F403DC

74F401SC, 74F402PC, 74F403DC Selling Leads, Datasheet

MFG:FSC Package Cooled:41 D/C:08.09+

74F401SC, 74F402PC, 74F403DC Datasheet download

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Part Number: 74F401SC

MFG: FSC

Package Cooled: 41

D/C: 08.09+

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74F401SC 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-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 compatible with all TTL families.

74F401SC Maximum Ratings

Storage Temperature .....................................-65°C to +150°C
Ambient Temperature under Bias ...................-55°C to +125°C
Junction Temperature under Bias.................... -55°C to +150°C
VCC Pin Potential to Ground Pin ..........................-0.5V to +7.0V
Input Voltage (Note 5) ........................................-0.5V to +7.0V
Input Current (Note 5) ..................................-30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with VCC = 0V)
Standard Output ....................................................-0.5V to VCC
3-STATE Output ...................................................-0.5V to +5.5V
Current Applied to Output
in LOW State (Max) .............................twice the rated IOL (mA)

74F401SC Features

· Eight selectable polynomials
· Error indicator
· Separate preset and clear controls
· Automatic right justification
· Fully compatible with all TTL logic families
· 14-pin package
· 9401 equivalent
· Typical applications:
Floppy and other disk storage systems
Digital cassette and cartridge systems
Data communication systems

74F401SC Connection Diagram

74F402PC General Description

The 74F402 expandable Serial Data Polynomial generator/ checker is an expandable version of the 74F401. 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 Ethernetâ, 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 74F402 is compatible with FASTâ devices and with all TTL families.

74F402PC Maximum Ratings

Storage Temperature .....................................-65°C to +150°C
Ambient Temperature under Bias ...................-55°C to +125°C
Junction Temperature under Bias................... -55°C to +150°C
VCC Pin Potential to Ground Pin .........................-0.5V to +7.0V
Input Voltage (Note 3)....................................... -0.5V to +7.0V
Input Current (Note 3) .................................-30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with VCC = 0V)
Standard Output................................................... -0.5V to VCC
3-STATE Output ..................................................-0.5V to +5.5V
Current Applied to Output
in LOW State (Max)............................. twice the rated IOL (mA)

74F402PC Features

· 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

74F402PC Connection Diagram

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