PI74FCT521T 8-BIT IDENTITY COMPARATOR PI74FCT521T Product Fe
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PI74FCT521T 8-BIT IDENTITY COMPARATOR
PI74FCT521T
Product Features:
PI74FCT521T compatible with bipolar FASTSeries higher speed lower power consumption input output levels Extremely static power Hysteresis inputs Industrial operating temperature range: -40°C +85°C Packages available: 20-pin wide plastic TSSOP 20-pin wide plastic 20-pin wide plastic QSOP 20-pin wide plastic TQSOP 20-pin wide plastic SOIC
Fast CMOS 8-Bit Identity Comparator
Product Description:
Pericom Semiconductor's PI74FCT series logic circuits produced Company's advanced micron CMOS technology, achieving industry leading speed grades. PI74FCT521T 8-bit identity comparator. When words eight bits compared, bit-for-bit match words provides output. comparison extended over multiple words expansion input. expansion input IA=B also serves active enable input.
OA=B
PS2019A 03/11/96
PI74FCT521T 8-BIT IDENTITY COMPARATOR
Product Description
Name IA=B OA=B A0-A7 B0-B7 Description Expansion Enable Input (Active LOW) Identity Output (Active LOW) Word Inputs Word Inputs Ground Power
Truth Table(1)
Inputs IA=B Output OA=B
Product Configuration
IA=B
20-PIN
NOTE: High Voltage Level Voltage Level, etc.
OA=B
PS2019A 03/11/96
PI74FCT521T 8-BIT IDENTITY COMPARATOR
Maximum Ratings
(Above which useful life impaired. user guidelines, tested.) Storage Temperature -65°C +150°C Ambient Temperature with Power Applied .-40°C +85°C Supply Voltage Ground Potential (Inputs Only) -0.5V +7.0V Supply Voltage Ground Potential (Outputs Only) -0.5V +7.0V Input Voltage -0.5V +7.0V Output Current Power Dissipation .0.5W Note: Stresses greater than those listed under MAXIMUM RATINGS cause permanent damage device. This stress rating only functional operation device these other conditions above those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect reliability.
Electrical Characteristics (Over Operating Range, -40°C +85°C,
Parameters Description IOFF Output HIGH Voltage Output Current Input HIGH Voltage Input Voltage Input HIGH Current Input Current Clamp Diode Voltage Short Circuit Current Power Down Disable Input Hysteresis Test Conditions(1) Min., Min., Guaranteed Logic HIGH Level Guaranteed Logic Level Max. Max. Min., Max.(3), VOUT GND, VOUT 4.5V -0.7 -120 -15.0 -1.2 Min. Typ(2) 0.50 Max. Units
Capacitance 25°C, MHz)
Parameters(4) COUT Description Input Capacitance Output Capacitance Test Conditions VOUT Max. Units
Notes: Max. Min. conditions, appropriate value specified under Electrical Characteristics applicable device type. Typical values 5.0V, +25°C ambient maximum loading. more than output should shorted time. Duration test should exceed second. This parameter determined device characterization production tested.
PS2019A 03/11/96
PI74FCT521T 8-BIT IDENTITY COMPARATOR
Power Supply Characteristics
Parameters Description ICCD Quiescent Power Supply Current Supply Current Input HIGH Supply Current Input MHz(4) Test Conditions(1) Max. Max. Max., Outputs Open Input Toggling Duty Cycle Max., Outputs Open Duty Cycle Toggling 3.4V(3) Min. Typ(2) 0.15 Max. 0.25 Units
Total Power Supply Current(6)
3.4V
3.5(5) 4.5(5)
Notes: conditions shown Max. Min., appropriate value specified under Electrical Characteristics applicable device. Typical values 5.0V, +25°C ambient. driven input (VIN 3.4V); other inputs GND. This parameter directly testable, derived Total Power Supply Calculations. Values these conditions examples formula. These limits guaranteed tested. =IQUIESCENT IINPUTS IDYNAMIC DHNT ICCD (fCP/2 fINI) Quiescent Current Power Supply Current High Input (VIN 3.4V) Duty Cycle Inputs High Number Inputs ICCD Dynamic Current Caused Input Transition Pair (HLH LHL) Clock Frequency Register Devices (Zero Non-Register Devices) Input Frequency Number Inputs currents milliamps frequencies megahertz.
Switching Characteristics over Operating Range
521T Com. 521AT Com. 521BT Com. 521CT Com. 521DT Com. Unit
Parameters tPLH tPHL tPLH tPHL
Description Propagation Delay OA=B Propagation Delay IA=B OA=B
Conditions(1)
10.0
Notes: Test Circuit Waveforms Minimum limits guaranteed tested Propagation Delays.
Pericom Semiconductor Corporation 2380 Bering Drive Jose, 95131 1-800-435-2336 (408) 435-1100 http://www.pericom.com
PS2019A 03/11/96
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