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Frequent questions

  • [FAQ] Can I use different voltages with Texas Instrument I2C TCA Switches/Multiplexers? (What is Voltage level Translation?)

    Part Number: TCA9548A Tool/software: The TCA family of Texas Instruments I2C switches all support voltage translation. It's important to use the correct Vcc for the I2C switch to separate the voltages when channels are enabled. The only requirement…

  • [FAQ] DS320PR1601: Do TI PCIe redrivers require a PCIe Reference Clock for operation?

    Part Number: DS320PR1601 Tool/software: Do TI PCIe redrivers require a PCIe Reference Clock (REFCLK) for operation?

  • [FAQ] LMH1219: Internal Voltage Thresholds for 4-Level Input Configuration Pins

    Part Number: LMH1219 Tool/software: Hi All, It is common to wonder what is going on inside of ICs. Being an applications engineer at TI gives me the unique opportunity to report on this so that people can to understand our devices a little bit more…

  • [FAQ] SN75LVPE5421: SN75LVPE5412 RSVD Pins 2 and 12 Tied to GND or Cap to GND?

    Part Number: SN75LVPE5421 Other Parts Discussed in Thread: SN75LVPE5412 , DS160PR412 Tool/software: First version of the data sheet required Cap to GND on RSVD pins 2 & 12. Then later revision called for zero-ohm Resistor to GND. Whether we use 0…

  • [FAQ] DS80PCI102: How does PCIe Receiver Detection work?

    Part Number: DS80PCI102 Tool/software: The receiver detection is part of the transmitter and it must correctly detect if there is a DC load impedance - 40 to 60-ohm or lower - is attached at the output of the transmitter. A transmitter - while at…

  • [FAQ] ETHERNET Master FAQ

    Part Number: ETHERNET-SW Tool/software: This Master FAQ lists serves as a point of reference to find all FAQs made by TI's Ethernet Team. Standard Ethernet How do I choose magnetics for my industrial PHY? TI Ethernet PHY Capacitive Coupling…

  • [FAQ] DP83TG720S-Q1: How to maximize temperature sensor accuracy

    Part Number: DP83TG720S-Q1 Tool/software: Section 7.3.1.4 of the datasheet outlines the procedure to use the inbuilt temperature sensor in the DP83TG720 PHY. In order to maximize accuracy, please ensure the following: Sample "temperature_output_code…

  • [FAQ] DP83867E: What is required for RGMII Input Timing?

    Part Number: DP83867E Tool/software: For DP83867, and all RGMII PHYs within our portfolio, all pins marked with TX prefix (TX_D0-3, TX_EN, TX_CLK) are inputs to the PHY when operating in RGMII. The only timing specifications that are required for…

  • [FAQ] TCAL9539-Q1: What I2C IO Expanders Support Q1 Grade?

    FAQ: Logic and Voltage Translation > IxC >> What I2C IO Expanders Support Automotive Grade 1? There are a total of 3 to date. TCAL9539-Q1 - 16-bit, 1.08V to 3.6V I2C IO Expander, single supply, interrupt, reset, Agile I/O Configuration TCA6408A…

  • [FAQ] I2C IO Expander Schematic Checklist

    Other Parts Discussed in Thread: PCF8574 , TCA9554 , TCA9554A , TCA9555 , PCF8574A , PCA9554A , PCA9555 , PCA9554 , PCF8575 FAQ: Logic and Voltage Translation > IxC >> I2C IO Expander Schematic Checklist IO Expander Checklist …

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