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74F521MSA PDF даташит

Спецификация 74F521MSA изготовлена ​​​​«National» и имеет функцию, называемую «8-Bit Identity Comparator».

Детали детали

Номер произв 74F521MSA
Описание 8-Bit Identity Comparator
Производители National
логотип National логотип 

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74F521MSA Даташит, Описание, Даташиты
www.DataSheet4U.com
May 1995
54F 74F521
8-Bit Identity Comparator
General Description
The ’F521 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 IAeB also serves as an active LOW enable input
Features
Y Compares two 8-bit words in 6 5 ns typ
Y Expandable to any word length
Y 20-pin package
Commercial
74F521PC
74F521SC (Note 1)
74F521SJ (Note 1)
74F521MSA (Note 1)
Military
54F521DM (Note 2)
Package
Number
N20A
J20A
M20B
M20D
MSA20
Package Description
20-Lead (0 300 Wide) Molded Dual-In-Line
20-Lead Ceramic Dual-In-Line
20-Lead (0 300 Wide) Molded Small Outline JEDEC
20-Lead (0 300 Wide) Molded Small Outline EIAJ
20-Lead Molded Shrink Small Outline EIAJ type II
Note 1 Devices also available in 13 reel Use suffix e SCX SJX and MSAX
Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB
Logic Symbols
IEEE IEC
TL F 9545 – 1
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 9545
TL F 9545 – 4
RRD-B30M75 Printed in U S A









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74F521MSA Даташит, Описание, Даташиты
Unit Loading Fan Out
Pin Names
Description
A0 – A7
B0 – B7
IAeB
OAeB
Word A Inputs
Word B Inputs
Expansion or Enable Input (Active LOW)
Identity Output (Active LOW)
Truth Table
Inputs
IA e B
L
L
H
H
AB
AeB
AiB
AeB
AiB
Output
OA e B
L
H
H
H
54F 74F
UL
HIGH LOW
10 10
10 10
10 10
50 33 3
Input IIH IIL
Output IOH IOL
20 mA b0 6 mA
20 mA b0 6 mA
20 mA b0 6 mA
b1 mA 20 mA
H e HIGH Voltage Level
L e LOW Voltage Level
A0 e B0 A1 e B1 A2 e B2 etc
Connection Diagrams
Pin Assignment for DIP
SOIC SSOP and Flatpak
Logic Diagram
TL F 9545–2
Pin Assignment
for LCC
TL F 9545 – 5
Please note that this diagram is provided only for the understanding of logic operations and should not be
used to estimate propagation delays
TL F 9545–3
2









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74F521MSA Даташит, Описание, Даташиты
Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Storage Temperature
b65 C to a150 C
Ambient Temperature under Bias
b55 C to a125 C
Junction Temperature under Bias
Plastic
b55 C to a175 C
b55 C to a150 C
VCC Pin Potential to
Ground Pin
b0 5V to a7 0V
Input Voltage (Note 2)
b0 5V to a7 0V
Input Current (Note 2)
b30 mA to a5 0 mA
Voltage Applied to Output
in HIGH State (with VCC e 0V)
Standard Output
TRI-STATE Output
b0 5V to VCC
b0 5V to a5 5V
Current Applied to Output
in LOW State (Max)
twice the rated IOL (mA)
Note 1 Absolute maximum ratings are values beyond which the device may
be damaged or have its useful life impaired Functional operation under
these conditions is not implied
Note 2 Either voltage limit or current limit is sufficient to protect inputs
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
Commercial
b55 C to a125 C
0 C to a70 C
Supply Voltage
Military
Commercial
a4 5V to a5 5V
a4 5V to a5 5V
DC Electrical Characteristics
Symbol
Parameter
54F 74F
Min Typ Max
Units VCC
Conditions
VIH
VIL
VCD
VOH
VOL
IIH
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH
Voltage
Output LOW
Voltage
Input HIGH
Current
54F 10% VCC
74F 10% VCC
74F 5% VCC
54F 10% VCC
74F 10% VCC
54F
74F
20
25
25
27
V Recognized as a HIGH Signal
08 V
Recognized as a LOW Signal
b1 2 V Min IIN e b18 mA
IOH e b1 mA
V Min IOH e b1 mA
IOH e b1 mA
0 5 V Min IOL e 20 mA
0 5 IOL e 20 mA
20 0
50
mA Max VIN e 2 7V
IBVI Input HIGH Current 54F
Breakdown Test
74F
100
70
mA Max VIN e 7 0V
ICEX
Output HIGH
Leakage Current
54F
74F
250
50
mA Max VOUT e VCC
VID Input Leakage 74F
Test
4 75
V 0 0 IID e 1 9 mA
All Other Pins Grounded
IOD
Output Leakage
74F
Circuit Current
3 75 mA 0 0 VIOD e 150 mV
All Other Pins Grounded
IIL
IOS
ICCH
Input LOW Current
Output Short-Circuit Current
Power Supply Current
b0 6 mA Max VIN e 0 5V
b60
b150 mA Max VOUT e 0V
21 32 mA Max VO e HIGH
3










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Номер в каталогеОписаниеПроизводители
74F521MSA8-Bit Identity ComparatorFairchild
Fairchild
74F521MSA8-Bit Identity ComparatorNational
National

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