Datasheet

PCA9508_1 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 01 — 28 April 2008 8 of 21
NXP Semiconductors
PCA9508
Hot swappable level translating I
2
C-bus repeater
Fig 6. Typical series application
002aac656
PCA9508
SDAA SDAB
SCLA SCLB
EN
SDA
SCL
BUS
MASTER
SLAVE
400 kHz
SDA
SCL
10 kΩ 10 kΩ
PCA9508
SDAA SDAB
SCLA SCLB
EN
V
CC
PCA9508
SDAA SDAB
SCLA SCLB
EN
10 kΩ 10 kΩ 10 kΩ 10 kΩ 10 kΩ 10 kΩ
hot-swap
and
offset free
hot-swap
and
offset free
hot-swap
and
offset free
Fig 7. Bus A (0.9 V to 5.5 V bus) waveform
Fig 8. Bus B (2.7 V to 5.5 V) waveform
002aac204
9th clock pulse
acknowledge
SCL
SDA
002aac657
9th clock pulse
acknowledge
SCL
SDA
V
OL
of slave
V
OL
of PCA9508