34

4872A–CORD–08/05

U4091BM-R

I

I

3.1

3.3

3.5

V

V

MPS

I

V

MPS

5.5

V

V

MIC

I

V

MIC

1.5

4

V

V

B

I

V

B

5.5

6.3

V

Ringing Power Converter, IMP = 1 mA, IM = 0, R

Maximum output power

V

ENSA = ENSAO = SE = 1

15

mW

Threshold

V

7.4

V

Low to high, RINGTH [0:3] = 0

6.0

6.7

7.4

V

Low to high, RINGTH [0:3] = 15

19

21

23

V

Adjustment steps threshold

DRINGTH = 1

0.8

1

1.2

V

Input impedance

V

4.6

5.8

7.0

k

Ω

Maximum input voltage

V

RINGmax

30

V

Serial Bus SCL, SDA, AS, VMP = 3.3V, RSDA = RSCL = RINT = 12 k

Ω

Input voltage

HIGH

LOW

SDA, SCL, INT

3.0

0

1.5

V

V

Output voltage

Acknowledge LOW

SDA

0.4

V

Clock frequency

SCL

100

kHz

Rise time SDA, SCL

1µs

Fall time SDA, SCL

300

ns

Period of SCL

HIGH

LOW

HIGH

LOW

t

L

4.0

4.7

µs

µs

Setup Time

Start condition

Data

Stop condition

t

sSTA

t

wSTA

4.7

250

4.7

4.7

µs

ns

µs

µs

Hold Time

Start condition

DATA

t

hSTA

4.0

0

µs

µs

18. Electrical Characteristics (Continued)

RLS = 50

Ω, Z

Parameters

Test Conditions

Symbol

Min.

Typ.

Max.

Unit

Note:

1. This is a period of time the bus requires from the end of a data transmission and before a new transmission can be started