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PI3C3126WE Datasheet(PDF) 4 Page - Pericom Semiconductor Corporation |
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PI3C3126WE Datasheet(HTML) 4 Page - Pericom Semiconductor Corporation |
4 / 7 page 4 PI3C3125/PI3C3126 2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables PS8153H 10/25/07 PI3C3125/PI3C3126 Switching Characteristics over 3.3V Operating Range Parameters Description Conditions PI3C3125/PI3C3126 Units Com. Min. Max. tPLH tPHL Propogation Delay(1,2) A to B, B to A CL =50pF RL = 500Ω 0.25 ns tPZH tPZL Bus Enable Time CL =50pF RL = 500Ω R = 500Ω 1.5 6.5 tPHZ tPLZ Bus Disable Time 1.5 5.5 Notes: 1. This parameter is guaranteed but not tested on Propagation Delays. 2. The bus switch contributes no propagational 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 50pF load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational 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. PI3C3125/PI3C3126 Switching Characteristics over 2.5V Operating Range Parameters Description Conditions PI3C3125/PI3C3126 Units Com. Min. Max. tPLH tPHL Propogation Delay(1,2) A to B, B to A CL =50pF RL = 500Ω 0.25 ns tPZH tPZL Bus Enable Time CL =50pF RL = 500Ω R = 500Ω 1.5 9.8 tPHZ tPLZ Bus Disable Time 1.5 8.3 Notes: 1. This parameter is guaranteed but not tested on Propagation Delays. 2. The bus switch contributes no propagational 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 50pF load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational 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. 07-0240 |
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