Datasheet

Recommended I
2
C Pullup Resistors
B0099-05
TAS5086
External
Microcontroller
V
I(SDA)
5V
I
P
I
P
V
I(SCL)
SDA
R
P
R
P
SCL
B0100-05
TAS5086 External
Microcontroller
V
I
5V
I
P
SDA
or
SCL
R
S
(2)
V
S
(1)
R
S
(2)
R
P
TAS5086
www.ti.com ................................................................................................................................................... SLES131C – FEBRUARY 2005 – REVISED JUNE 2008
It is recommended that the I
2
C pullup resistors R
P
be 3.3 k Ω (see Figure 4 ). If a series resistor is in the circuit
(see Figure 5 ), then the series resistor R
S
should be less than or equal to 300 Ω .
Figure 4. I
2
C Pullup Circuit (With No Series Resistor)
(1) V
S
= 5 × R
S
/(R
S
+ R
P
). When driven low, V
S
< < V
IL
requirements.
(2) R
S
≤ 300 Ω
Figure 5. I
2
C Pullup Circuit (With Series Resistor)
Copyright © 2005 – 2008, Texas Instruments Incorporated Submit Documentation Feedback 7
Product Folder Link(s): TAS5086