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PCA9548ADBT Datasheet(PDF) 11 Page - Texas Instruments |
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PCA9548ADBT Datasheet(HTML) 11 Page - Texas Instruments |
11 / 23 page www.ti.com Electrical Characteristics PCA9548A 8-CHANNEL I2C SWITCH WITH RESET SCPS143B – OCTOBER 2006 – REVISED MARCH 2007 V CC = 2.3 V to 3.6 V, over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC MIN TYP(1) MAX UNIT VPOR Power-on reset voltage(2) No load, VI = VCC or GND VPOR 1.6 2.1 V 5 V 3.6 4.5 V to 5.5 V 2.6 4.5 3.3 V 1.9 Vo(sw) Switch output voltage Vi(sw) = VCC, ISWout = –100 µA V 3 V to 3.6 V 1.6 2.8 2.5 V 1.5 2.3 V to 2.7 V 1.1 2 VOL = 0.4 V 3 6 IOL SDA 2.3 V to 5.5 V mA VOL = 0.6 V 6 9 SCL, SDA ±1 SC7–SC0, SD7–SD0 ±1 II VI = VCC or GND 2.3 V to 5.5 V µA A2–A0 ±1 RESET ±1 5.5 V 50 80 fSCL = 400 kHz VI = VCC or GND, IO = 0 3.6 V 20 35 2.7 V 11 20 Operating mode 5.5 V 9 30 fSCL = 100 kHz VI = VCC or GND, IO = 0 3.6 V 6 15 2.7 V 4 8 ICC µA 5.5 V 0.2 1 Low inputs VI = GND, IO = 0 3.6 V 0.1 1 2.7 V 0.1 1 Standby mode 5.5 V 0.2 1 High inputs VI = VCC, IO = 0 3.6 V 0.1 1 2.7 V 0.1 1 SCL or SDA input at 0.6 V, 3 20 Other inputs at VCC or GND Supply-current ∆I CC SCL, SDA 2.3 V to 5.5 V µA change SCL or SDA input at VCC – 0.6 V, 3 20 Other inputs at VCC or GND A2–A0 4 5 VI = VCC or GND Ci RESET 2.3 V to 5.5 V 4 5 pF SCL VI = VCC or GND, Switch OFF 20 28 SDA 20 28 Cio(off)(3) VI = VCC or GND, Switch OFF 2.3 V to 5.5 V pF SC7–SC0, SD7–SD0 5.5 7.5 4.5 V to 5.5 V 4 10 20 VO = 0.4 V, IO = 15 mA ron Switch-on resistance 3 V to 3.6 V 5 12 30 Ω VO = 0.4 V, IO = 10 mA 2.3 V to 2.7 V 7 15 45 (1) All typical values are at nominal supply voltage (2.5-V, 3.3-V, or 5-V VCC), TA = 25°C. (2) The power-on reset circuit resets the I2C bus logic with VCC < VPOR. VCC must be lowered to 0.2 V to reset the device. (3) Cio(ON) depends on internal capacitance and external capacitance added to the SCn lines when channels(s) are ON. 11 Submit Documentation Feedback |
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