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74FST3253DR2 데이터시트(PDF) 4 Page - ON Semiconductor |
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74FST3253DR2 데이터시트(HTML) 4 Page - ON Semiconductor |
4 / 8 page 74FST3253 http://onsemi.com 4 DC ELECTRICAL CHARACTERISTICS VCC TA = *40_C to )85_C Symbol Parameter Conditions (V) Min Typ* Max Unit VIK Clamp Diode Resistance IIN = *18mA 4.5 *1.2 V VIH High−Level Input Voltage 4.0 to 5.5 2.0 V VIL Low−Level Input Voltage 4.0 to 5.5 0.8 V II Input Leakage Current 0 v VIN v 5.5 V 5.5 $1.0 mA IOZ OFF−STATE Leakage Current 0 v A, B v VCC 5.5 $1.0 mA RON Switch On Resistance (Note 6) VIN = 0 V, IIN = 64 mA 4.5 4 7 W VIN = 0 V, IIN = 30 mA 4.5 4 7 VIN = 2.4 V, IIN = 15 mA 4.5 8 15 VIN = 2.4 V, IIN = 15 mA 4.0 11 20 ICC Quiescent Supply Current VIN = VCC or GND, IOUT = 0 5.5 3 mA DICC Increase In ICC per Input One input at 3.4 V, Other inputs at VCC or GND 5.5 2.5 mA *Typical values are at VCC = 5.0 V and TA = 25_C. 6. Measured by the voltage drop between A and B pins at the indicated current through the switch. On resistance is determined by the lower of the voltages on the two (A or B) pins. AC ELECTRICAL CHARACTERISTICS TA = *40_C to )85_C CL = 50 pF, RU = RD = 500 W VCC = 4.5−5.5 V VCC = 4.0 V Symbol Parameter Conditions Min Max Min Max Unit tPHL, tPLH Prop Delay Bus to Bus (Note 7) VI = OPEN 0.25 0.25 ns Prop Delay, Select to Bus A 1.0 5.3 6.3 tPZH, tPZL Output Enable Time, Select to Bus B VI = 7 V for tPZL 1.0 5.3 6.0 ns Output Enable Time, IOE to Bus A, B VI = OPEN for tPZH 1.0 5.3 6.2 tPHZ, tPLZ Output Disable Time, Select to Bus B VI = 7 V for tPLZ 1.0 5.8 6.2 ns Output Disable Time, IOE to Bus A, B VI = OPEN for tPHZ 1.0 5.5 6.2 7. This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On resistance of the switch and the 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance). CAPACITANCE (Note 8) Symbol Parameter Conditions Typ Max Unit CIN Control Pin Input Capacitance VCC = 5.0 V 3 pF CI/O A Port Input/Output Capacitance VCC, OE = 5.0 V 13 pF CI/O B Port Input/Output Capacitance VCC, OE = 5.0 V 5 pF 8. TA = )25_C, f = 1 MHz, Capacitance is characterized but not tested. |
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