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IDTQS3257QG Datasheet(PDF) 4 Page - Integrated Device Technology |
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IDTQS3257QG Datasheet(HTML) 4 Page - Integrated Device Technology |
4 / 5 page 4 INDUSTRIALTEMPERATURERANGE IDTQS3257 HIGH-SPEEDCMOSQUICKSWITCHQUAD2:1MUX/DEMUX POWER SUPPLY CHARACTERISTICS Symbol Parameter TestConditions(1) Max. Unit ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or Vcc, f = 0 3 μA ΔICC Power Supply Current per Control Input HIGH (2) VCC = Max., VIN = 3.4V, f = 0 1.5 mA ICCD Dynamic Power Supply Current per MHz(3) VCC = Max., I and Y pins open 0.25 mA/MHz Control Inputs Toggling at 50% Duty Cycle NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per TLL driven input (VIN = 3.4V, control inputs only). I and Y pins do not contribute to ΔIcc. 3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The I and Y inputs generate no significant AC or DC currents as they transition. This parameter is guaranteed but not production tested. SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -40°C to +85°C, VCC = 5.0V ± 5%; CLOAD = 50pF, RLOAD = 500 Ω unless otherwise noted. Symbol Parameter Min.(1) Typ. Max. Unit tPLH DataPropagationDelay(2,3) — — 0.25(3) ns tPHL Ix to Y tPZH SwitchTurn-onDelay 0.5 — 5.2 ns tPZL Sx to Y tPZH SwitchTurn-onDelay 0.5 — 4.8 ns tPZL Ex to Y tPHZ SwitchTurn-offDelay (2) 0.5 — 5 ns tPLZ Ex to Y, Sx to Y NOTES: 1. Minimums are guaranteed but not production tested. 2. This parameter is guaranteed but not production tested. 3. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns for CL = 50pF. Since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the system. Propagation delay of the bus switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side. |
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