TCA9509 Datasheet, PDF (3/14 Pages) Texas Instruments – LEVEL-TRANSLATING I2C/SMBUS BUS REPEATER

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NO.
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2
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NAME
V_CCA
SCLA
SDAA
GND
EN
SDAB
SCLB
V_CCB
TERMINAL FUNCTIONS
DESCRIPTION
A-side supply voltage (1.0V to V_CCB - 1V)
Serial clock bus, A side.
Serial data bus, A side.
Supply ground
Active-high repeater enable input
Serial data bus, B side. Connect to V_CCB through a pullup resistor.
Serial clock bus, B side. Connect to V_CCB through a pullup resistor.
B-side and device supply voltage (2.7 V to 5.5 V)
Table 1. FUNCTION TABLE
INPUT
EN
L
H
FUNCTION
Outputs disabled
SDAA = SDAB
SCLA = SCLB
3
SDAA
Figure 1. FUNCTIONAL BLOCK DIAGRAM
V_CCA
V_CCB
V_CCA
1
8
1 mA
TCA9509
SCPS225 – JUNE 2011
6
SDAB
2
SCLA
V_CCA
1 mA
7
SCLB
5
EN
4
GND
Copyright © 2011, Texas Instruments Incorporated
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