74ACT521SCX National Semiconductor, 74ACT521SCX Datasheet

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74ACT521SCX

Manufacturer Part Number
74ACT521SCX
Description
Manufacturer
National Semiconductor
Type
Identity Comparatorr
Datasheet

Specifications of 74ACT521SCX

Logic Family
ACT
Technology
CMOS
High Level Output Current
-24mA
Low Level Output Current
24mA
Output Function
A=B
Quiescent Current
4uA
Mounting
Surface Mount
Pin Count
20
Polarity
Inverting
Abs. Propagation Delay Time
11ns
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Operating Temperature Classification
Industrial
Number Of Bits
8
Lead Free Status / RoHS Status
Compliant
© 2005 Fairchild Semiconductor Corporation
74AC521SC
74AC521SJ
74AC521MTC
74AC521PC
74ACT521SC
74ACT521SJ
74ACT521MTC
74ACT521PC
74AC521 • 74ACT521
8-Bit Identity Comparator
General Description
The AC/ACT521 is an expandable 8-bit comparator. It com-
pares two words of up to eight bits each and provides a
LOW output when the two words match bit for bit. The
expansion input I
input.
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering table.
Pb-Free package per JEDEC J-STD-020B.
Logic Symbols
FACT
Order Number
¥
is a trademark of Fairchild Semiconductor Corporation.
A
Package Number
B
also serves as an active LOW enable
MTC20
MTC20
M20D
M20D
IEEE/IEC
M20B
N20A
M20B
N20A
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
DS009964
Features
Connection Diagram
Pin Descriptions
I
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
CC
A
B
T
O
reduced by 50%
A
Package Description
0
0
A
–A
–B
Pin Names
B
B
7
7
Word A Inputs
Word B Inputs
Expansion or Enable Input
Identity Output
November 1988
Revised March 2005
Description
www.fairchildsemi.com

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74ACT521SCX Summary of contents

Page 1

Identity Comparator General Description The AC/ACT521 is an expandable 8-bit comparator. It com- pares two words eight bits each and provides a LOW output when the two words match bit for bit. The ...

Page 2

Truth Table Inputs (Note (Note HIGH Voltage Level L LOW Voltage Level Note ...

Page 3

Absolute Maximum Ratings Supply Voltage ( Input Diode Current ( 0. 0. Input Voltage ( Output Diode Current ( ...

Page 4

DC Electrical Characteristics for ACT Symbol Parameter V Minimum HIGH Level IH Input Voltage V Maximum LOW Level IL Input Voltage V Minimum HIGH Level OH Output Voltage V Maximum LOW Level OL Output Voltage I Maximum Input IN Leakage ...

Page 5

AC Electrical Characteristics for ACT Symbol Parameter t Propagation Delay PLH Propagation Delay PHL Propagation Delay PLH ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide www.fairchildsemi.com Package Number M20B 6 ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D 7 www.fairchildsemi.com ...

Page 8

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide www.fairchildsemi.com Package Number MTC20 8 ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right ...

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