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TCA6408 Datasheet(PDF) 4 Page - Texas Instruments |
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TCA6408 Datasheet(HTML) 4 Page - Texas Instruments |
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www.ti.com Voltage Translation TCA6408 LOW-VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS SCPS151C – FEBRUARY 2007 – REVISED JUNE 2007 Table 1 shows how to set up VCC levels for the necessary voltage translation between the I 2C bus and the TCA6408. Table 1. Voltage Translation VCCI VCCP (SCL and SDA of I2C master) (P Port) (V) (V) 1.8 1.8 1.8 2.5 1.8 3.3 1.8 5 2.5 1.8 2.5 2.5 2.5 3.3 2.5 5 3.3 1.8 3.3 2.5 3.3 3.3 3.3 5 5 1.8 5 2.5 5 3.3 5 5 4 Submit Documentation Feedback |
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