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IDT74FCT521BSOB Datasheet(PDF) 4 Page - Integrated Device Technology |
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IDT74FCT521BSOB Datasheet(HTML) 4 Page - Integrated Device Technology |
4 / 6 page 4 MILITARYANDCOMMERCIALTEMPERATURERANGES IDT54/74FCT521/A/B/C FAST CMOS 8-BIT IDENTITY COMPARATOR NOTES: 1. For conditions shown as Max. or Min., 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 the 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 Output Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fi = Input Frequency Ni = Number of Inputs at fi All currents are in milliamps and all frequencies are in megahertz. 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. VIN ≥ VHC; VIN ≤ VLC —0.2 1.5 mA ∆ICC Quiescent Power Supply Current TTL Inputs HIGH VCC = Max. VIN = 3.4V(3) —0.5 2 mA ICCD Dynamic Power Supply Current(4) VCC = Max. Outputs Open One Input Toggling 50% Duty Cycle VIN ≥ VHC VIN ≤ VLC — 0.15 0.25 mA/ MHz IC Total Power Supply Current(5) VCC = Max. Outputs Open VIN ≥ VHC VIN ≤ VLC (FCT) —1.7 4 mA fi = 10MHz One Bit Toggling 50% Duty Cycle VIN = 3.4V VIN = GND —2 5 NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. SWITCHING CHARACTERISTICS OVER OPERATING RANGE - COMMERCIAL IDT74FCT521 IDT74FCT521A IDT74FCT521B IDT74FCT521C Symbol Parameter Condition(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit tPLH tPHL Propagation Delay An or Bn to OA = B CL = 50pF RL = 500 Ω 1.5 11 1.5 7.2 1.5 5.5 1.5 4.5 ns tPLH tPHL Propagation Delay IA = B to OA = B 1.5 10 1.5 6 1.5 4.6 1.5 4.1 ns SWITCHING CHARACTERISTICS OVER OPERATING RANGE - MILITARY IDT54FCT521 IDT54FCT521A IDT54FCT521B IDT54FCT521C Symbol Parameter Condition(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit tPLH tPHL Propagation Delay An or Bn to OA = B CL = 50pF RL = 500 Ω 1.5 15 1.5 9.5 1.5 7.3 1.5 5.1 ns tPLH tPHL Propagation Delay IA = B to OA = B 1.5 9 1.5 7.8 1.5 6 1.5 4.5 ns |
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