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SN74CB3Q3244DW 데이터시트(PDF) 5 Page - Texas Instruments |
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SN74CB3Q3244DW 데이터시트(HTML) 5 Page - Texas Instruments |
5 / 21 page SN74CB3Q3244 8BIT FET BUS SWITCH 2.5V/3.3V LOW VOLTAGE HIGHBANDWIDTH BUS SWITCH SCDS154B − OCTOBER 2003 − REVISED DECEMBER 2004 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VIK VCC = 3.6 V, II = −18 mA −1.8 V IIN Control inputs VCC = 3.6 V, VIN = 0 to 5.5 V ±1 µA IOZ‡ VCC = 3.6 V, VO = 0 to 5.5 V, VI = 0, Switch OFF, VIN = VCC or GND ±1 µA Ioff VCC = 0, VO = 0 to 5.5 V, VI = 0 1 µA ICC VCC = 3.6 V, II/O = 0, Switch ON or OFF, VIN = VCC or GND 0.7 2 mA ∆ICC§ Control inputs VCC = 3.6 V, One input at 3 V, Other inputs at VCC or GND 30 µA ICCD¶ Per control input VCC = 3.6 V, A and B ports open, 0.14 0.15 mA/ MHz ICCD¶ Per control input Control input switching at 50% duty cycle 0.14 0.15 mA/ MHz Cin Control inputs VCC = 3.3 V, VIN = 5.5 V, 3.3 V, or 0 2.5 3.5 pF Cio(OFF) VCC = 3.3 V, Switch OFF, VIN = VCC or GND, VI/O = 5.5 V, 3.3 V, or 0 3.5 5 pF Cio(ON) VCC = 3.3 V, Switch ON, VIN = VCC or GND, VI/O = 5.5 V, 3.3 V, or 0 9 11 pF VCC = 2.3 V, VI = 0, IO = 30 mA 4 8 ron# VCC = 2.3 V, TYP at VCC = 2.5 V VI = 1.7 V, IO = −15 mA 5 9 Ω ron# VCC = 3 V VI = 0, IO = 30 mA 4 6 Ω VCC = 3 V VI = 2.4 V, IO = −15 mA 5 8 VIN and IIN refer to control inputs. VI, VO, II, and IO refer to data pins. † All typical values are at VCC = 3.3 V (unless otherwise noted), TA = 25°C. ‡ For I/O ports, the parameter IOZ includes the input leakage current. § This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND. ¶ This parameter specifies the dynamic power-supply current associated with the operating frequency of a single control input (see Figure 2). # Measured by the voltage drop between the A and B terminals at the indicated current through the switch. ON-state resistance is determined by the lower of the voltages of the two (A or B) terminals. switching characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figure 3) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 2.5 V ± 0.2 V VCC = 3.3 V ± 0.3 V UNIT PARAMETER (INPUT) (OUTPUT) MIN MAX MIN MAX UNIT fOE|| OE A or B 10 20 MHz tpdk A or B B or A 0.12 0.2 ns ten OE A or B 2.8 7.1 2.5 5.9 ns tdis OE A or B 1 5.8 1.5 5.8 ns || Maximum switching frequency for control input (VO > VCC, VI = 5 V, RL ≥ 1 MΩ, CL = 0) k The propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load capacitance, when driven by an ideal voltage source (zero output impedance). |
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