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IDT74FCT157DTQ Datasheet(PDF) 4 Page - Integrated Device Technology |
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IDT74FCT157DTQ Datasheet(HTML) 4 Page - Integrated Device Technology |
4 / 6 page INDUSTRIALTEMPERATURERANGE 4 IDT74FCT157AT/CT/DT FASTCMOSQUAD2-INPUTMULTIPLEXER NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. IDT74FCT151AT IDT74FCT151CT IDT74FCT151DT Symbol Parameter Condition(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit tPLH PropagationDelay CL = 50pF 1.5 5 1.5 4.3 1.5 3.9 ns tPHL Ix to Zx RL = 500 Ω tPLH PropagationDelay 1.5 6 1.5 4.8 1.5 4.4 ns tPHL E to Zx tPLH PropagationDelay 1.5 7 1.5 5.2 1.5 4.6 ns tPHL S to Zx SWITCHING CHARACTERISTICS OVER OPERATING RANGE Symbol Parameter Test Conditions(1) Min. Typ.(2) Max. Unit ΔICC Quiescent Power Supply Current VCC = Max. — 0.5 2 mA TTL Inputs HIGH VIN = 3.4V(3) ICCD Dynamic Power Supply VCC = Max. VIN = VCC — 0.15 0.25 mA/ Current(4) Outputs Open VIN = GND MHz E = GND One Input Toggling 50% Duty Cycle IC Total Power Supply Current(6) VCC = Max. VIN = VCC — 1.5 3.5 mA Outputs Open VIN = GND fo = 10MHz 50% Duty Cycle VIN = 3.4V — 1.8 4.5 E = GND VIN = GND One Bit Toggling VCC = Max. VIN = VCC — 1.5 3.5(5) mA Outputs Open VIN = GND fo = 2.5MHz 50% Duty Cycle VIN = 3.4V — 2.5 7.5(5) E = GND VIN = GND Four Bits Toggling 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 ΔICC formula. These limits are guaranteed but not tested. 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ΔICC DHNT + ICCD (fONO) ICC = Quiescent Current ΔICC = 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) fO = Output Frequency NO = Number of Outputs at fO All currents are in milliamps and all frequencies are in megahertz. POWER SUPPLY CHARACTERISTICS |
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