74F521PC

74F521PC Datasheet

74F521 8-Bit Identity Comparator

Part	Datasheet
74F521PC	74F521PC (pdf)

Related Parts	Information
74F521MSA	74F521MSA
74F521SJ	74F521SJ
74F521SJX	74F521SJX
74F521SC	74F521SC
74F521SCX	74F521SCX
74F521MSAX	74F521MSAX

PDF Datasheet Preview
74F521 8-Bit Identity Comparator 74F521 8-Bit Identity Comparator 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. s Compares two 8-bit words in ns typ s Expandable to any word length s 20-pin package Ordering Code: Order Number Package Number Package Description 74F521SC M20B 20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide 74F521SJ M20D 20-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide 74F521MSA MSA20 20-Lead Shrink Small Outline Package SSOP , EIAJ TYPE II, 5.3mm Wide 74F521PC N20A 20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC 2000 Fairchild Semiconductor Corporation DS009545 74F521 Unit Loading/Fan Out Pin Names IA=B OA=B Word A Inputs Word B Inputs Expansion or Enable Input Active LOW Identity Output Active LOW U.L. Input IIH/IIL HIGH/LOW Output IOH/IOL 20 µA/−0.6 mA 20 µA/−0.6 mA 20 µA/−0.6 mA −1 mA/20 mA Truth Table IA = B L H H = HIGH Voltage Level L = LOW Voltage Level Note 1 A0 = B0, A1 = B1, A2 = B2, etc. Logic Diagram Inputs A, B A = B Note 1 A = B Note 1 Output OA = B L H Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 74F521 Absolute Maximum Ratings Note 2 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 Input Voltage Note 3 −0.5V to +7.0V −0.5V to +7.0V Input Current Note 3 −30 mA to mA Voltage Applied to Output in HIGH State with VCC = 0V Standard Output 3-STATE Output

PDF Datasheet Preview

74F521 8-Bit Identity Comparator
74F521 8-Bit Identity Comparator

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.
s Compares two 8-bit words in ns typ s Expandable to any word length s 20-pin package
Ordering Code:

Order Number Package Number

Package Description
74F521SC

M20B
20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide
74F521SJ

M20D
20-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide
74F521MSA

MSA20
20-Lead Shrink Small Outline Package SSOP , EIAJ TYPE II, 5.3mm Wide
74F521PC

N20A
20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Symbols

Connection Diagram

IEEE/IEC
2000 Fairchild Semiconductor Corporation DS009545
74F521

Unit Loading/Fan Out

Pin Names

IA=B OA=B

Word A Inputs Word B Inputs Expansion or Enable Input Active LOW Identity Output Active LOW

U.L.

Input IIH/IIL

HIGH/LOW Output IOH/IOL
20 µA/−0.6 mA
20 µA/−0.6 mA
20 µA/−0.6 mA
−1 mA/20 mA

Truth Table

IA = B L H

H = HIGH Voltage Level L = LOW Voltage Level Note 1 A0 = B0, A1 = B1, A2 = B2, etc.

Logic Diagram

Inputs

A, B A = B Note 1

A = B Note 1

Output

OA = B L H

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
74F521

Absolute Maximum Ratings Note 2

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 Input Voltage Note 3
−0.5V to +7.0V −0.5V to +7.0V

Input Current Note 3
−30 mA to mA

Voltage Applied to Output
in HIGH State with VCC = 0V Standard Output 3-STATE Output

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Datasheet ID: 74F521PC 513339