IDENTITY COMPARATOR. 74FCT521AT Datasheet

74FCT521AT COMPARATOR. Datasheet pdf. Equivalent

Part 74FCT521AT
Description FAST CMOS 8-BIT IDENTITY COMPARATOR
Feature 74FCT521AT/CT FAST CMOS 8-BIT IDENTITY COMPARATOR FAST CMOS 8-BIT IDENTITY COMPARATOR INDUSTRIALTEM.
Manufacture IDT
Datasheet
Download 74FCT521AT Datasheet



74FCT521AT
74FCT521AT/CT
FAST CMOS 8-BIT IDENTITY COMPARATOR
FAST CMOS 8-BIT
IDENTITY COMPARATOR
INDUSTRIALTEMPERATURERANGE
74FCT521AT/CT
FEATURES:
• A and C grades
• Low input and output leakage 1µA (max.)
• CMOS power levels
• True TTL input and output compatibility:
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)
• High Drive outputs (-15mA IOH, 48mA IOL)
• Meets or exceeds JEDEC standard 18 specifications
• Power off disable outputs permit "live insertion"
• Available in SOIC and QSOP packages
DESCRIPTION:
The IDT74FCT521T is an 8-bit identity comparator built using an
advanced dual metal CMOS technology. These devices 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 input.
FUNCTIONAL BLOCK DIAGRAM
A0 2
B0 3
A1 4
B1 5
A2 6
B2 7
A3 8
B3 9
A4 11
B4 12
A5 13
B5 14
A6 15
B6 16
A7 17
B7 18
IA=B 1
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
© 2019 Integrated Device Technology, Inc.
1
19 OA=B
MAY 2019
DSC-2572/16



74FCT521AT
74FCT521AT/CT
FAST CMOS 8-BIT IDENTITY COMPARATOR
PIN CONFIGURATION
IA=B
A0
B0
A1
B1
A2
B2
A3
B3
GND
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
TOP VIEW
VCC
OA=B
B7
A7
B6
A6
B5
A5
B4
A4
Package Type
QSOP
SOIC
Package Code
PCG20
PSG20
Order Code
QG
SOG
INDUSTRIALTEMPERATURERANGE
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
Max Unit
VTERM(2)
VTERM(3)
TSTG
IOUT
Terminal Voltage with Respect to GND
Terminal Voltage with Respect to GND
Storage Temperature
DC Output Current
–0.5 to +7
–0.5 to VCC+0.5
–65 to +150
–60 to +120
V
V
°C
mA
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability. No terminal voltage may exceed
Vcc by +0.5V unless otherwise noted.
2. Inputs and Vcc terminals only.
3. Output and I/O terminals only.
CAPACITANCE (TA = +25°C, F = 1.0MHz)
Symbol
Parameter(1)
Conditions Typ. Max. Unit
CIN Input Capacitance VIN = 0V 6 10 pF
COUT
Output Capacitance VOUT = 0V
8
12 pF
NOTE:
1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names
A0 - A7
B0 - B7
IA = B
OA = B
Description
Word A Inputs
Word B Inputs
Expansion or Enable Input (Active LOW)
Identity Output (Active LOW)
FUNCTION TABLE(1)
Inputs
IA = B A, B
L A = B*
L AB
H A = B*
H AB
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
*A0 = B0, A1 = B1, A2 = B2, etc.
Output
OA = B
L
H
H
H
2





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