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PCA9306DP1 数据表(PDF) 9 Page - NXP Semiconductors |
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PCA9306DP1 数据表(HTML) 9 Page - NXP Semiconductors |
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9 / 21 page  PCA9306_2 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 02 — 21 February 2007 9 of 21 NXP Semiconductors PCA9306 Dual bidirectional I2C-bus and SMBus voltage-level translator 11. Application information (1) The applied voltages at Vref(1) and Vpu(D) should be such that Vbias(ref)(2) is at least 1 V higher than Vref(1) for best translator operation. Fig 9. Typical application circuit (switch always enabled) (1) In the Enabled mode, the applied enable voltage and the applied voltage at Vref(1) should be such that Vbias(ref)(2) is at least 1 V higher than Vref(1) for best translator operation. Fig 10. Typical application circuit (switch enable control) 002aab847 SCL1 SDA1 VREF1 GND 3 4 VREF2 1 6 5 SCL2 SDA2 8EN SW SW PCA9306 7 200 k Ω RPU RPU Vpu(D) = 3.3 V(1) I2C-BUS DEVICE SCL SDA VCC GND 2 Vref(1) = 1.8 V(1) RPU RPU I2C-BUS MASTER SCL SDA VCC GND 002aab848 SCL1 SDA1 VREF1 GND 3 4 VREF2 1 6 5 SCL2 SDA2 8EN SW SW PCA9306 7 200 k Ω RPU RPU Vpu(D) = 3.3 V I2C-BUS DEVICE SCL SDA VCC GND 2 Vref(1) = 1.8 V(1) RPU RPU I2C-BUS MASTER SCL SDA VCC GND on off 3.3 V enable signal(1) |
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