NCA9546-DTSPR

Novosense
NCA9546 4-channel I2C-bus switch with reset Datasheet (EN) 1.1 Product Overview  Low Standby Current The NCA9546 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 regist...
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Корпус TSSOP-16
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NCA9546 4-channel I2C-bus switch with reset Datasheet (EN) 1.1 Product Overview  Low Standby Current The NCA9546 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.  Operating Power-Supply Voltage Range of 1.7 V to 5.5 V An active-low reset (RESET) input allows the NCA9546 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 NCA9546. 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  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 NCA9546-DTSPR Package TSSOP16 Body Size 5.0mm*4.4mm  1-of-4 Bidirectional Translating Switches  I2C Bus and SMBus Compatible Functional Block Diagrams  Active-Low Reset Input  Three Address Terminals, Allowing up to Four Devices on the I2C Bus  Channel Selection via I2C Bus, in Any Combination A0 1 16 VCC A1 2 15 SDA RESET  Power-Up with All Switch Channels Deselected SD0 4  Low RON Switches SC0 5  Allows Voltage-Level Translation Between 1.8-V, 2.5-V, 3.3V, and 5-V Buses  No Glitch on Power-Up  Supports Hot Insertion Copyright © 2021, NOVOSENSE 14 SCL 3 13 A2 NCA9546 12 SC3 SD1 6 11 SD3 SC1 7 10 SC2 GND 8 9 SD2 Figure 1. NCA9546 Block Diagram Page 1 PDF
Документация на NCA9546-DTSPR 

Дата модификации: 27.12.2021

Размер: 1.06 Мб

19 стр.

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