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The AC/ACT521 is an expandable 8-bit comparator. It compares two words of up to eight bits each and provides a LOW output when the two words match bit for bit. The expansion input IA = B also serves as an active LOW enable nput.
74ACT521SC Maximum Ratings
Supply Voltage (VCC).................. −0.5V to +7.0V DC Input Diode Current (IIK) VI = −0.5V ......................................... −20 mA VI = VCC + 0.5V................................. +20 mA DC Input Voltage (VI) .........−0.5V to VCC + 0.5V DC Output Diode Current (IOK) VO = −0.5V........................................ −20 mA VO = VCC + 0.5V +20 mA DC Output Voltage (VO) ......−0.5V to VCC + 0.5V DC Output Source or Sink Current (IO)............................ ±50 mA DC VCC or Ground Current per Output Pin (ICC or IGND)............... ±50 mA Storage Temperature (TSTG)... −65°C to +150°C Junction Temperature (TJ) PDIP ......................................................140°C
74ACT521SC Features
ICC reduced by 50% Compares two 8-bit words in 6.5 ns typ Expandable to any word length 20-pin package Outputs source/sink 24 mA ACT521 has TTL-compatible inputs
74ACT521SC Connection Diagram
74ACT521SCX Parameters
Technical/Catalog Information
74ACT521SCX
Vendor
Fairchild Semiconductor
Category
Integrated Circuits (ICs)
Type
Identity Comparator
Number of Bits
8
Voltage - Supply
4.5 V ~ 5.5 V
Current - Supply
4A
Delay Time - Propagation
6ns
Package / Case
20-SOIC
Packaging
Tape & Reel (TR)
Operating Temperature
-40°C ~ 85°C
Lead Free Status
Lead Free
RoHS Status
RoHS Compliant
Other Names
74ACT521SCX 74ACT521SCX
74ACT521SJ Parameters
Technical/Catalog Information
74ACT521SJ
Vendor
Fairchild Semiconductor
Category
Integrated Circuits (ICs)
Type
Identity Comparator
Number of Bits
8
Voltage - Supply
4.5 V ~ 5.5 V
Current - Supply
4A
Delay Time - Propagation
6ns
Package / Case
20-SOP
Packaging
Tube
Operating Temperature
-40°C ~ 85°C
Lead Free Status
Lead Free
RoHS Status
RoHS Compliant
Other Names
74ACT521SJ 74ACT521SJ
74ACT521SJ General Description
The AC/ACT521 is an expandable 8-bit comparator. It compares two words of up to eight bits each and provides a LOW output when the two words match bit for bit. The expansion input IA = B also serves as an active LOW enable input.
74ACT521SJ Maximum Ratings
Supply Voltage (VCC).................. −0.5V to +7.0V DC Input Diode Current (IIK) VI = −0.5V ......................................... −20 mA VI = VCC + 0.5V................................. +20 mA DC Input Voltage (VI) .........−0.5V to VCC + 0.5V DC Output Diode Current (IOK) VO = −0.5V........................................ −20 mA VO = VCC + 0.5V +20 mA DC Output Voltage (VO) ......−0.5V to VCC + 0.5V DC Output Source or Sink Current (IO)............................ ±50 mA DC VCC or Ground Current per Output Pin (ICC or IGND)............... ±50 mA Storage Temperature (TSTG)... −65°C to +150°C Junction Temperature (TJ) PDIP ......................................................140°C
74ACT521SJ Features
ICC reduced by 50% Compares two 8-bit words in 6.5 ns typ Expandable to any word length 20-pin package Outputs source/sink 24 mA ACT521 has TTL-compatible inputs
