PCA9544APW datasheet(10/23 Pages) TI

Part #	PCA9544APW

Description	4-CHANNEL IC AND SMBus MULTIPLEXER WITH INTERRUPT LOGIC

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Manufacturer	TI [Texas Instruments]

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Electrical Characteristics

PCA9544A

4-CHANNEL I2C AND SMBus MULTIPLEXER

WITH INTERRUPT LOGIC

SCPS146A – OCTOBER 2005 – REVISED OCTOBER 2005

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

1.7

2.1

V

5 V

3.6

4.5 V to 5.5 V

2.6

4.5

3.3 V

1.9

Vpass

Switch output voltage

VSWin = 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

IOH

INT

VO = VCC

2.3 V to 5.5 V

10

µA

VOL = 0.4 V

3

7

SCL, SDA

IOL

VOL = 0.6 V

2.3 V to 5.5 V

6

10

mA

INT

VOL = 0.4 V

3

7

SCL, SDA

±1

SC3–SC0, SD3–SD0

±1

II

VI = VCC or GND

2.3 V to 5.5 V

µA

A2–A0

±1

INT3–INT0

±1

5.5 V

3

12

Operating mode

fSCL = 100 kHz

VI = VCC or GND,

IO = 0

3.6 V

3

11

2.7 V

3

10

5.5 V

0.3

1

ICC

Low inputs

VI = GND,

IO = 0

3.6 V

0.1

1

µA

2.7 V

0.1

1

Standby mode

5.5 V

0.3

1

High inputs

VI = VCC,

IO = 0

3.6 V

0.1

1

2.7 V

0.1

1

One INT3–INT0 input at 0.6 V,

8

15

Other inputs at VCC or GND

INT3–INT0

One INT3–INT0 input at VCC – 0.6 V,

8

15

Other inputs at VCC or GND

Supply-current

∆I

CC

2.3 V to 5.5 V

µA

change

SCL or SDA input at 0.6 V,

8

15

Other inputs at VCC or GND

SCL, SDA

SCL or SDA inputs at VCC – 0.6 V,

8

15

Other inputs at VCC or GND

A2–A0

4.5

6

Ci

VI = VCC or GND

2.3 V to 5.5 V

pF

INT3–INT0

4.5

6

SCL, SDA

15

19

Cio(OFF)(3)

VI = VCC or GND,

Switch OFF

2.3 V to 5.5 V

pF

SC3–SC0, SD3–SD0

6

8

4.5 V to 5.5 V

4

9

16

VO = 0.4 V,

IO = 15 mA

RON

Switch-on resistance

3 V to 3.6 V

5

11

20

Ω

VO = 0.4 V,

IO = 10 mA

2.3 V to 2.7 V

7

16

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.

10

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