DS4000 Digitally Controlled TCXO

4 of 16

AC ELECTRICAL CHARACTERISTICS—2-WIRE SERIAL INTERFACE

°C to +85°C)

PARAMETER

SYMBOL

CONDITION

MIN

TYP

MAX

UNITS

Fast mode

0

400

SCL Clock Frequency

Standard mode

0

100

kHz

Fast mode

1.3

Bus Free Time Between

a STOP and START

Condition

Standard mode

4.7

ms

Fast mode (Note 7)

0.6

Hold Time (Repeated)

START Condition

Standard mode (Note 7)

4.0

ms

Fast mode

1.3

Low Period of SCL

Clock

Standard mode

4.7

ms

Fast mode

0.6

High Period of SCL

Clock

Standard mode

4.0

ms

Fast mode

0.6

Setup Time for a

Repeated START

Condition

Standard mode

4.7

ms

Fast mode (Note 8)

0

0.9

Data Hold Time

Standard mode (Note 8)

0

0.9

ms

Fast mode (Note 9)

100

Data Setup Time

Standard mode (Note 9)

250

ns

Fast mode (Note 9)

300

Rise Time of Both SDA

and SCL

Standard mode (Note 9)

1000

ns

Fast mode (Note 10)

300

Fall Time of Both SDA

and SCL

Standard mode (Note 10)

1000

ns

Fast mode

0.6

Setup Time for STOP

Condition

Standard mode

4.0

ms

Capacitive Load for

Each Bus Line

(Note 10)

400

pF

Input Capacitance

5

pF

Note 7: After this period, the first clock pulse is generated.

the case if the device does not stretch the LOW period of the SCL signal. If such a device does stretch the LOW period of the SCL