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5962-9220301MRA Datasheet(PDF) 6 Page - Texas Instruments |
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5962-9220301MRA Datasheet(HTML) 6 Page - Texas Instruments |
6 / 20 page CY54FCT244T, CY74FCT244T 8-BIT BUFFERS/LINE DRIVERS WITH 3-STATE OUTPUTS SCCS071 – OCTOBER 2001 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) (continued) PARAMETER TEST CONDITIONS CY54FCT244T CY74FCT244T UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT # One bit switching at f1 = 10 MHz VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V 0.7 1.4 # VCC = 5.5 V, 1 at 50% duty cycle VIN = 3.4 V or GND 1 2.4 # CC Outputs open, OEA = OEB = GND Eight bits switching at f1 =2 5MHz VIN = 0.2 V or VIN ≥ VCC – 0.2 V 1.3 2.6|| IC# at f1 = 2.5 MHz at 50% duty cycle VIN = 3.4 V or GND 3.3 10.6|| mA IC# One bit switching at f1 = 10 MHz VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V 0.7 1.4 mA VCC = 5.25 V, 1 at 50% duty cycle VIN = 3.4 V or GND 1 2.4 CC Outputs open, OEA = OEB = GND Eight bits switching at f1 =2 5MHz VIN = 0.2 V or VIN ≥ VCC – 0.2 V 1.3 2.6|| at f1 = 2.5 MHz at 50% duty cycle VIN = 3.4 V or GND 3.3 10.6|| Ci 5 10 5 10 pF Co 9 12 9 12 pF † Typical values are at VCC = 5 V, TA = 25°C. # IC = ICC + ∆ICC × DH × NT + ICCD (f0/2 + f1 × N1) Where: IC = Total supply current ICC = Power-supply current with CMOS input levels ∆ICC = Power-supply current for a TTL high input (VIN = 3.4 V) 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) f0 = Clock frequency for registered devices, otherwise zero f1 = Input signal frequency N1 = Number of inputs changing at f1 All currents are in milliamperes and all frequencies are in megahertz. || Values for these conditions are examples of the ICC formula. |
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