6.5 Electrical Characteristics

over recommended operating free-air temperature range, VCCI = 1.65 V to 5.5 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCCP

MIN TYP(1)

MAX UNIT

VIK

Input diode clamp voltage II = –18 mA

1.65 V to 5.5 V

–1.2

V

VPOR

Power-on reset voltage(2) VI = VCCP or GND, IO = 0

1.65 V to 5.5 V

1

1.4

V

VOH

P-port high-level output

voltage

IOH = –8 mA

1.65 V

1.2

V

2.3 V

1.8

3 V

2.6

4.5 V

4.1

IOH = –10 mA

1.65 V

1.1

2.3 V

1.7

3 V

2.5

4.5 V

4.0

VOL

P-port low-level output

voltage

IOL = 8 mA

1.65 V

0.45

V

2.3 V

0.25

3 V

0.25

4.5 V

0.2

IOL = 10 mA

1.65 V

0.6

2.3 V

0.3

3 V

0.25

4.5 V

0.2

IOL

SDA

VOL = 0.4 V

1.65 V to 5.5 V

3

mA

INT

3

15

II

SCL, SDA, RESET

VI = VCCI or GND

1.65 V to 5.5 V

±0.1

μA

ADDR

VI = VCCP or GND

±0.1

IIH

P-port

VI = VCCP

1.65 V to 5.5 V

1

μA

IIL

P-port

VI = GND

1

μA

ICC

(ICCI + ICCP)

Operating

mode

SDA,

P-port,

ADDR,

RESET

VI on SDA and RESET= VCCI or GND,

VI on P-port and ADDR = VCCP or GND,

IO = 0, I/O = inputs,

fSCL = 400 kHz

3.6 V to 5.5 V

10

20

μA

2.3 V to 3.6 V

6.5

15

1.65 V to 2.3 V

4

9

Standby

mode

SCL, SDA,

P-port,

ADDR,

RESET

VI on SCL, SDA and RESET = VCCI or

GND,

VI on P-Port and ADDR = VCCP or GND,

IO = 0, I/O = inputs,

fSCL = 0

3.6 V to 5.5 V

1.5

7

2.3 V to 3.6 V

1

3.2

1.65 V to 2.3 V

0.5

1.7

ΔICCI

Additional

current in

standby

mode

SCL, SDA,

RESET

One input at VCCI – 0.6 V,

Other inputs at VCCI or GND

1.65 V to 5.5 V

25

μA

ΔICCP

P-port,

ADDR

One input at VCCP – 0.6 V,

Other inputs at VCCP or GND

1.65 V to 5.5 V

80

μA

Ci

SCL

VI = VCCI or GND

1.65 V to 5.5 V

6

7

pF

Cio

SDA

VIO = VCCI or GND

1.65 V to 5.5 V

7

8

pF

P-port

VIO = VCCP or GND

7.5

8.5

(1)

All typical values are at nominal supply voltage (1.8-V, 2.5-V, 3.3-V, or 5-V VCC) and TA = 25°C.

(2)

When power (from 0 V) is applied to VCCP, an internal power-on reset holds the TCA6408A in a reset condition until VCCP has reached

VPOR. At that time, the reset condition is released, and the TCA6408A registers and I2C/SMBus state machine initialize to their default

states. After that, VCCP must be lowered to below 0.2 V and back up to the operating voltage for a power-reset cycle.

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TCA6408A

SCPS192E – APRIL 2009 – REVISED JANUARY 2023

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