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54AC520

National Semiconductor
Part Number 54AC520
Manufacturer National Semiconductor
Description 8-Bit Identity Comparator
Published Feb 15, 2007
Detailed Description www.DataSheet4U.com 54AC520 • 54ACT520 8-Bit Identity Comparator September 1998 54AC520 • 54ACT520 8-Bit Identity Com...
Datasheet PDF File 54AC520 PDF File

54AC520
54AC520


Overview
www.
DataSheet4U.
com 54AC520 • 54ACT520 8-Bit Identity Comparator September 1998 54AC520 • 54ACT520 8-Bit Identity Comparator General Description The ’AC/’ACT520 are expandable 8-bit comparators.
They compare two words of up to eight bits each and provide a LOW output when the two words match bit for bit.
The expansion input IA = B also serves as an active LOW enable input.
n n n n n Expandable to any word length 20-pin package Outputs source/sink 24 mA ’ACT520 has TTL-compatible inputs Standard Microcircuit Drawing (SMD) 54AC520: 5962-90916 54ACT520: 5962-89793 Features n Compares two 8-bit words in 6.
5 ns typ Logic Symbols IEEE/IEC DS100234-1 DS100234-4 Pin Names A0–A7 B0–B7 TA = B OA = B Description Word A Inputs Word B Inputs Expansion or Enable Input Identity Output FACT™ is a trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100234 www.
national.
com Connection Diagrams Pin Assignment for DIP and Flatpak Pin Assignment for LCC DS100234-3 DS100234-2 Truth Table Inputs IA = B L L H H A, B A = B* A≠B A = B* A≠B Outputs OA = B L H H H H = HIGH Voltage Level L = LOW Voltage Level *A0 = B0, A1 = B1, A2 = B2, etc.
www.
national.
com 2 Logic Diagram DS100234-5 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
3 www.
national.
com Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Supply Voltage (VCC) DC Input Diode Current (IIK) VI = −0.
5V VI = VCC + 0.
5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = −0.
5V VO = VCC + 0.
5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current per Output Pin (ICC or IGND) Storage Temperature (TSTG) Junction Temperature (TJ) CDIP −0.
5V to +7.
0V −20 mA +20 mA −0.
5V to VCC + 0.
5V −20 mA +20 mA −0.
5V to ...


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