NCA9545-DTSR

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NCA9545 4-channel I2C-bus switch with interrupt logic and reset Datasheet (EN) 1.3 Product Overview The NCA9545 is a quad bidirectional translating switch controlled via the I2C bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can be selected, determined by the contents of the programmable control register...
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Корпус TSSOP-20
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NCA9545 4-channel I2C-bus switch with interrupt logic and reset Datasheet (EN) 1.3 Product Overview The NCA9545 is a quad bidirectional translating switch controlled via the I2C bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can be selected, determined by the contents of the programmable control register. Four interrupt inputs (INT3–INT0), one for each of the downstream pairs, are provided. One interrupt (INT) output acts as an AND of the four interrupt inputs. An active-low reset (RESET) input allows the NCA9545 to recover from a situation in which one of the downstream I2C buses is stuck in a low state. Pulling RESET low resets the I2C state machine and causes all the channels to be deselected as does the internal power-on reset function. The pass gates of the switches are constructed such that the VCC terminal can be used to limit the maximum high voltage, which will be passed by the NCA9545. This allows the use of different bus voltages on each pair, so that 1.8V, 2.5-V, or 3.3-V parts can communicate with 5-V parts without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O terminals are 5.5 V tolerant. Key Features  1-of-4 Bidirectional Translating Switches 2  I C Bus and SMBus Compatible  Four Active-Low Interrupt Inputs  Active-Low Interrupt Output  Active-Low Reset Input   Allows Voltage-Level Translation Between 1.8-V, 2.5-V, 3.3-V, and 5-V Buses  No Glitch on Power-Up  Supports Hot Insertion  Low Standby Current Operating Power-Supply Voltage Range of 1.65 V to 5.5  V  5.5 V Tolerant Inputs  0 to 400-kHz Clock Frequency  Latch-Up Performance Exceeds 100 mA per JESD 78  ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 1000-V Charged-Device Model (C101) Applications  Servers  Routers (Telecom Switching Equipment)  Factory Automation  Products With I2C Slave Address Conflicts (e.g. Multiple, Identical Temp Sensors) Device Information Part Number NCA9545-DTSR Package TSSOP20 Body Size 6.5mm*4.5mm Functional Block Diagrams Two Address Terminals, Allowing up to Four Devices on the I2C Bus  Channel Selection via I2C Bus, in Any Combination  Power-Up With All Switch Channels Deselected  Low RON Switches Figure 1. NCA9545 Block Diagram PDF
Документация на NCA9545-DTSR 

AD7792/AD7793 3-Channel, Low Noise, Low Power, 16/24-Bit ∑-Δ ADC with On-Chip In-Amp and Reference Data Sheet (Rev. A) Keywords:

Дата модификации: 05.05.2022

Размер: 3.31 Мб

20 стр.

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