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Part Number: 54AT521
Description: The AC/ACT521 is an expandable 8-bit comparator. It compares two words of up to eight bits each and pr...
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54AT521
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General Description
54AT521 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.
54AT521 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)
CDIP..................... 175°C
Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. National does not recommend operation of FACT™ circuits outside databook specifications.
54AT521 Features
·ICC reduced by 50%
·Compares two 8-bit words in 6.5 ns typ
· Expandable to any word length
· Outputs source/sink 24 mA
· ACT521 has TTL-compatible inputs
· Standard microcircuit Drawing (SMD)
54AC521: 5962-90985
54ACT521: 5962-89793
54AT521 Connection Diagram
54ABT16244
PDF/DataSheet Download
- Datasheet: 54ABT16244
- File Size: 200550 KB
- Manufacturer: NSC [National Semiconductor]
- Click here to Download
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