MC74AC521/74ACT521 expandable 8-bit comparator. compares words eight b

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MC74AC521/74ACT521 expandable 8-bit comparator. compares words eight b

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MC74AC521 MC74ACT521 Identity Comparator
MC74AC521/74ACT521 expandable 8-bit comparator. compares words eight bits each provides output when words match bit. expansion input IA=B also serves active enable input. Compares 8-Bit Words Expandable Word Length 20-Pin Package Outputs Source/Sink ACT521 TTL-Compatible Inputs
SUFFIX CASE 738-03 PLASTIC
8-BIT IDENTITY COMPARATOR
OA=B
IA=B
SUFFIX CASE 751D-04 PLASTIC
NAMES A0-A7 B0-B7 IA=B OA=B Word Inputs Word Inputs Expansion Enable Input Identity Output
LOGIC SYMBOL
TRUTH TABLE
Inputs IA=B Outputs OA=B IA=B OA=B
HIGH Voltage Level Voltage Level *A0=B0, A1=B1, A2=B2, etc.
FACT DATA
MC74AC521 MC74ACT521
LOGIC DIAGRAM
OA=B IA=B
Please note that this diagram provided only understanding logic operations should used estimate propagation delays.
MAXIMUM RATINGS*
Symbol Vout Iout Tstg Parameter Supply Voltage (Referenced GND) Input Voltage (Referenced GND) Output Voltage (Referenced GND) Input Current, Output Sink/Source Current, Current Output Storage Temperature Value -0.5 +7.0 -0.5 +0.5 -0.5 +0.5 +150 Unit
Maximum Ratings those values beyond which damage device occur. Functional operation should restricted Recommended Operating Conditions.
FACT DATA
MC74AC521 MC74ACT521
RECOMMENDED OPERATING CONDITIONS
Symbol Vin, Vout Supply Voltage Input Voltage, Output Voltage (Ref. GND) Input Rise Fall Time (Note Devices except Schmitt Inputs Input Rise Fall Time (Note Devices except Schmitt Inputs Junction Temperature (PDIP) Operating Ambient Temperature Range Output Current High Output Current Parameter ns/V ns/V Unit
from VCC; individual Data Sheets devices that differ from typical input rise fall times. from individual Data Sheets devices that differ from typical input rise fall times.
CHARACTERISTICS
74AC Symbol Parameter +25°C Minimum High Level Input Voltage Maximum Level Output Voltage IOLD IOHD Maximum Input Leakage Current Minimum Dynamic Output Current Maximum Quiescent Supply Current 0.002 0.001 0.001 2.25 2.75 2.25 2.75 2.99 4.49 5.49 74AC -40°C +85°C Unit Conditions
Guaranteed Limits 3.15 3.85 1.35 1.65 2.56 3.86 4.86 0.36 0.36 0.36 ±0.1 3.15 3.85 1.35 1.65 2.46 3.76 4.76 0.44 0.44 0.44 ±1.0 VOUT VOUT IOUT *VIN IOUT *VIN VCC, VOLD 1.65 VOHD 3.85
Maximum Level Input Voltage
Minimum High Level Output Voltage
outputs loaded; thresholds input associated with output under test. Maximum test duration output loaded time. Note: guaranteed less than equal respective limit VCC.
FACT DATA
MC74AC521 MC74ACT521
CHARACTERISTICS (For Figures Waveforms Section
74AC Symbol Parameter VCC* tPLH tPHL tPLH tPHL Propagation Delay OA=B Propagation Delay OA=B Propagation Delay IA=B OA=B Propagation Delay IA=B OA=B +25°C 11.5 74AC -40°C +85°C 12.5 Unit Fig.
Voltage Range ±0.3 Voltage Range ±0.5
CHARACTERISTICS
74ACT Symbol Parameter +25°C Minimum High Level Input Voltage Maximum Level Input Voltage Minimum High Level Output Voltage Maximum Level Output Voltage ICCT IOLD IOHD Maximum Input Leakage Current Additional Max. ICC/Input Minimum Dynamic Output Current Maximum Quiescent Supply Current 0.001 0.001 4.49 5.49 74ACT -40°C +85°C Unit Conditions
Guaranteed Limits 3.86 4.86 0.36 0.36 ±0.1 3.76 4.76 0.44 0.44 ±1.0 VOUT VOUT IOUT *VIN IOUT *VIN VCC, VOLD 1.65 VOHD 3.85
outputs loaded; thresholds input associated with output under test. Maximum test duration output loaded time.
FACT DATA
MC74AC521 MC74ACT521
CHARACTERISTICS (For Figures Waveforms Section
74ACT Symbol Parameter VCC* tPLH tPHL tPLH tPHL Propagation Delay OA=B Propagation Delay OA=B Propagation Delay IA=B OA=B Propagation Delay IA=B OA=B +25°C 74ACT -40°C +85°C Unit Fig.
Voltage Range ±0.5
CAPACITANCE
Symbol Input Capacitance Power Dissipation Capacitance Parameter Value Unit Test Conditions
APPLICATIONS RIPPLE EXPANSION
ENABLE IA=B IA=B
IA=B
OA=B
OA=B
OA=B
PARALLEL EXPANSION
ENABLE IA=B IA=B
IA=B
OA=B
OA=B
OA=B
FACT DATA
MC74AC521 MC74ACT521
OUTLINE DIMENSIONS
SUFFIX PLASTIC PACKAGE CASE 738-03 ISSUE
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: INCH. DIMENSION CENTER LEAD WHEN FORMED PARALLEL. DIMENSION DOES INCLUDE MOLD FLASH. INCHES 1.010 1.070 0.240 0.260 0.150 0.180 0.015 0.022 0.050 0.050 0.070 0.100 0.008 0.015 0.110 0.140 0.300 0.020 0.040 MILLIMETERS 25.66 27.17 6.10 6.60 3.81 4.57 0.39 0.55 1.27 1.27 1.77 2.54 0.21 0.38 2.80 3.55 7.62 0.51 1.01
SEATING PLANE
0.25 (0.010)
0.25 (0.010)
SUFFIX PLASTIC SOIC PACKAGE CASE 751D-04 ISSUE
0.010 (0.25)
0.010 (0.25)
SEATING PLANE
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: MILLIMETER. DIMENSIONS INCLUDE MOLD PROTRUSION. MAXIMUM MOLD PROTRUSION 0.150 (0.006) SIDE. DIMENSION DOES INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL 0.13 (0.005) TOTAL EXCESS DIMENSION MAXIMUM MATERIAL CONDITION. MILLIMETERS INCHES 12.65 12.95 0.499 0.510 7.40 7.60 0.292 0.299 2.35 2.65 0.093 0.104 0.35 0.49 0.014 0.019 0.50 0.90 0.020 0.035 1.27 0.050 0.25 0.32 0.010 0.012 0.10 0.25 0.004 0.009 10.05 10.55 0.395 0.415 0.25 0.75 0.010 0.029
Motorola reserves right make changes without further notice products herein. Motorola makes warranty, representation guarantee regarding suitability products particular purpose, does Motorola assume liability arising application product circuit, specifically disclaims liability, including without limitation consequential incidental damages. "Typical" parameters vary different applications. operating parameters, including "Typicals" must validated each customer application customer's technical experts. Motorola does convey license under patent rights rights others. Motorola products designed, intended, authorized components systems intended surgical implant into body, other applications intended support sustain life, other application which failure Motorola product could create situation where personal injury death occur. Should Buyer purchase Motorola products such unintended unauthorized application, Buyer shall indemnify hold Motorola officers, employees, subsidiaries, affiliates, distributors harmless against claims, costs, damages, expenses, reasonable attorney fees arising directly indirectly, claim personal injury death associated with such unintended unauthorized use, even such claim alleges that Motorola negligent regarding design manufacture part. Motorola registered trademarks Motorola, Inc. Motorola, Inc. Equal Opportunity/Affirmative Action Employer.
reach USA/EUROPE: Motorola Literature Distribution; P.O. 20912; Phoenix, Arizona 85036. 1-800-441-2447 MFAX: RMFAX0@email.sps.mot.com -TOUCHTONE (602) 244-6609 INTERNET: http://Design-NET.com
JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, Toshikatsu Otsuki, Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 03-3521-8315 HONG KONG: Motorola Semiconductors H.K. Ltd.; Ping Industrial Park, Ting Road, N.T., Hong Kong. 852-26629298
FACT DATA
*MC74AC521/D*
MC74AC521/D

MC74AC521/74ACT521 expandable 8-bit comparator. compares words eight b

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