Datasheet

SDAB
SCLBSCLA
SDAA
EN
V
CCB
Pullup
Resistor
GND
1 8
V
CCA
V
CCB
4
3
2
5
6
7
Not Recommended for New Designs
PCA9517
www.ti.com SCPS157D –DECEMBER 2007–REVISED MARCH 2012
TERMINAL FUNCTIONS
NO. NAME DESCRIPTION
1 V
CCA
A-side supply voltage (0.9 V to 5.5 V)
2 SCLA Serial clock bus, A side. Connect to V
CCA
through a pullup resistor.
3 SDAA Serial data bus, A side. Connect to V
CCA
through a pullup resistor.
4 GND Supply ground
5 EN Active-high repeater enable input
6 SDAB Serial data bus, B side. Connect to V
CCB
through a pullup resistor.
7 SCLB Serial clock bus, B side. Connect to V
CCB
through a pullup resistor.
8 V
CCB
B-side and device supply voltage (2.7 V to 5.5 V)
Table 1. FUNCTION TABLE
INPUT
FUNCTION
EN
L Outputs disabled
SDAA = SDAB
H
SCLA = SCLB
Figure 1. FUNCTIONAL BLOCK DIAGRAM
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