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NVT2010 Datasheet(PDF) 6 Page - NXP Semiconductors |
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NVT2010 Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 33 page NVT2008_NVT2010 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved. Product data sheet Rev. 3 — 27 January 2014 6 of 33 NXP Semiconductors NVT2008; NVT2010 Bidirectional voltage-level translator 6. Functional description Refer to Figure 1 “Logic diagram of NVT2008/10 (positive logic)”. 6.1 Function table [1] EN is controlled by the Vref(B) logic levels and should be at least 1 V higher than Vref(A) for best translator operation. 7. Application design-in information The NVT2008/10 can be used in level translation applications for interfacing devices or systems operating at different interface voltages with one another. The NVT2008/10 is ideal for use in applications where an open-drain driver is connected to the data I/Os. The NVT2008/10 can also be used in applications where a push-pull driver is connected to the data I/Os. 7.1 Enable and disable The NVT20xx has an EN input that is used to disable the device by setting EN LOW, which places all I/Os in the high-impedance state. Table 4. Function selection (example) H = HIGH level; L = LOW level. Input EN[1] Function HAn = Bn L disconnect (1) The applied voltages at Vref(A) and Vpu(D) should be such that Vref(B) is at least 1 V higher than Vref(A) for best translator operation. Fig 7. Typical application circuit (switch always enabled) 002aae134 A1 A2 VREFA GND 3 4 VREFB 1 6 5 B1 B2 8EN SW SW NVT2002 7 200 k Ω RPU RPU Vpu(D) = 3.3 V(1) I2C-BUS DEVICE SCL SDA VCC GND 2 Vref(A) = 1.8 V(1) RPU RPU I2C-BUS MASTER SCL SDA VCC GND |
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