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Description : 8-Bit Identity Comparator

8-Bit Identity Comparator

The MC74AC521/74ACT521 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=Balso serves as an
active LOW enable input.

• 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

Part Name(s) : 74F521CW
Fairchild
Fairchild Semiconductor
Description : 8-Bit Identity Comparator

General Description
The 74F521 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.
   
Features
■ Compares two 8-Bit words in 6.5 ns typ
■ Expandable to any word length
■ 20-pin package
   

Philips
Philips Electronics
Description : 8-Bit Identity Comparator

DESCRIPTION
The 74F521 is an expandable 8-Bit Comparator. It compares two words of up to 8 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.
   
FEATURES
• Compares two 8-Bit words in 6.5ns typical
• Expandable to any word length
   

Motorola
Motorola => Freescale
Description : 8-Bit Identity Comparator

The MC54/74F521 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.

• Compares Two 8-Bit Words in 6.5 ns Typical
• Expandable to Any Word Length
• 20-Pin Package

Description : 8-Bit Identity Comparator

General Description
The 74F521 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.

Features
■ Compares two 8-Bit words in 6.5 ns typ
■ Expandable to any word length
■ 20-pin package

Description : Fast CMOS 8-Bit Identity Comparator

Product Description:
Pericom Semiconductor’s PI74FCT series of logic circuits are produced in the Company’s advanced 0.8 micron CMOS technology, achieving industry leading speed grades.
The PI74FCT521T is an 8-Bit Identity Comparator. When two words of up to eight bits are compared, a bit-for-bit match of the two words provides a LOW output. The comparison can be extended over multiple words by the expansion input. The expansion input IA=B also serves as an active LOW enable input.

Product Features:
• PI74FCT521T is pin compatible with bipolar FAST™ Series at a higher speed and lower power consumption
• TTL input and output levels
• Extremely low static power
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packages available:
   – 20-pin 173 mil wide plastic TSSOP (L)
   – 20-pin 300 mil wide plastic DIP (P)
   – 20-pin 150 mil wide plastic QSOP (Q)
   – 20-pin 150 mil wide plastic TQSOP (R)
   – 20-pin 300 mil wide plastic SOIC (S)

 

Description : 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 in put.

Features
Compares two 8-Bit words in 6.5 ns typ
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

Description : 8-Bit MAGNITUDE/Identity ComparatorS

8-Bit MAGNITUDE/Identity ComparatorS

Description : 8-Bit Identity Comparator

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.

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

Fairchild
Fairchild Semiconductor
Description : 8-Bit Registered Comparator

General Description
The 74F524 is an 8-Bit bidirectional register with parallel input and output plus serial input and output progressing from LSB to MSB. All data inputs, serial and parallel, are loaded by the rising edge of the input clock. The device functions are controlled by two control lines (S0, S1) to exe cute shift, load, hold and read out.

Features
8-Bit bidirectional register with bus-oriented input-output
■ Independent serial input-output to register
■ Register bus Comparator with “equal to”, “greater than” and “less than” outputs
■ Cascadable in groups of eight bits
■ Open-collector Comparator outputs for AND-wired expansion
■ Twos complement or magnitude compare

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