5

TCA9803

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SCPS267B – MARCH 2017 – REVISED FEBRUARY 2020

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Copyright © 2017–2020, Texas Instruments Incorporated

(1)

All typical values are at nominal supply voltage (1.8 V) and TA = 25 °C unless otherwise specified.

(2)

SDAB, SCLB may not sink current from external sources. It is required that no source of external current be used on these pins for

proper device operation due to the internal current source.

(3)

Parameter specified by design. Not tested in production.

(4)

VIL specification is for the first low-level seen by the SDAB and SCLB pins. IILC must also be satisfied in order to be interpreted as a low.

(5)

SDAB, SCLB have a maximum supported capacitive load for device operation. If this load capacitance maximum is violated, the device

does not function properly. SDAA, SCLA have no maximum capacitance limit.

7.5 Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN TYP(1)

MAX

UNIT

OUTPUT CHARACTERISTICS

VOL

Low-level output voltage

SDAA, SCLA

IOL = 6 mA, VILB = 0 V

0.04

0.13

V

SDAB, SCLB

VIA = 0 V

0.22

0.26

IEXT-I

(2)

Allowed input leakage current of ICS

SDAB, SCLB

0

100

µA

IEXT-O

(2)

Allowed output leakage current of ICS

SDAB, SCLB

0

200

µA

ICS

Current source value

3.3

mA

Current source tolerance

–25

25

%

INPUT CHARACTERISTICS

REN

Enable pin pull-up

150

250

450

k

Ω

VIH

High-level input voltage

SDAA, SCLA

0.7 ×

VCCA

VCCA

V

SDAB, SCLB(3)

0.7 ×

VCCB

VCCB

EN

0.7 ×

VCCA

VCCA

VIL

Low-level input voltage

SDAA, SCLA

0

0.3 ×

VCCA

V

SDAB, SCLB(4) (3)

0

0.3 ×

VCCB

EN

0

0.3 ×

VCCA

IILC

Low-level input current contention

SDAB, SCLB (4)

1000

µA

RILC

Low-level allowed pull-down resistance

SDAB, SCLB (3)

150

Ω

CBUS

Bus capacitance limit

SDAB, SCLB(5)

0

400

pF

DC CHARACTERISTICS

UVLO

Under-voltage lock out

VCCA

VCCA rising and falling; VCCB =

1.65 or 3.6 V

0.3

0.55

0.8

V

VCCB

VCCB rising; VCCA = 0.8 or 3.6 V

1.3

1.51

1.6

VCCB falling; VCCA = 0.8 or 3.6 V

1.2

1.4

1.6

ICCA

Quiescent supply current for VCCA

SDAA = SCLA =

VCCA or

GND, SDAB =

SCLB = open,

EN = VCCA

VCCA = 0.8 V

0.1

7

µA

VCCA = 1.8 V

0.1

8

VCCA = 2.5 V

0.2

9

VCCA = 3.6 V

0.2

12

ICCB

Quiescent supply current for VCCB

Both channels

high, SDAA =

SCLA = pulled

up to

VCCA, SDAB =

SCLB = open,

EN = VCCA

VCCB = 1.8 V

44

75

µA

VCCB = 2.5 V

47

80

VCCB = 3.6 V

52

90

Both channels

low, SDAA =

SCLA = GND.

SDAB = SCLB =

open, EN =

VCCA

VCCB = 1.8 V

6.4

7.7

mA

VCCB = 2.5 V

6.5

7.8

VCCB = 3.6 V

6.7

7.9