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IDT74FCT821ALSO Datasheet(PDF) 4 Page - Integrated Device Technology |
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IDT74FCT821ALSO Datasheet(HTML) 4 Page - Integrated Device Technology |
4 / 7 page MILITARYANDCOMMERCIALTEMPERATURERANGES 4 IDT54/74FCT821/A/B HIGHPERFORMANCECMOSBUSINTERFACEREGISTER POWER SUPPLY CHARACTERISTICS VLC = 0.2V, VHC = VCC - 0.2V Symbol Parameter Test Conditions(1) Min. Typ.(2) Max. Unit ICC Quiescent Power Supply Current VCC = Max. — 0.2 1.5 mA VIN ≥ VHC; VIN ≤ VLC ∆ICC Quiescent Power Supply Current VCC = Max. — 0.5 2 mA TTL Inputs HIGH VIN = 3.4V(3) ICCD Dynamic Power Supply VCC = Max. VIN ≥ VHC — 0.15 0.25 mA/ Current(4) Outputs Open VIN ≤ VLC MHz OE = GND One Input Toggling 50% Duty Cycle IC Total Power Supply Current(6) VCC = Max. VIN ≥ VHC — 1.7 4 mA Outputs Open VIN ≤ VLC fCP = 10MHz 50% Duty Cycle OE = GND VIN = 3.4V — 2.2 6 One Bit Toggling VIN = GND at fi = 5MHz 50% Duty Cycle VCC = Max. VIN ≥ VHC — 4 7.8(5) Outputs Open VIN ≤ VLC fCP = 10MHz 50% Duty Cycle OE = GND VIN = 3.4V — 6.2 16.8(5) Eight Bits Toggling VIN = GND at fi = 2.5MHz 50% Duty Cycle NOTES: 1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25°C ambient. 3. Per TTL driven input; (VIN = 3.4V). All other inputs at VCC or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of ∆ICC formula. These limits are guaranteed but not tested. 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ∆ICC DHNT + ICCD (fCP/2+ fiNi) ICC = Quiescent Current ∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current caused by an Input Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fi = Output Frequency Ni = Number of Outputs at fi All currents are in milliamps and all frequencies are in megahertz. |
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