Серия преобразователей логического уровня RS0302

Runic

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 Раздел Преобразователи логического уровня
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Документация на серию RS0302

RS0302 Dual Bidirectional I2C-Bus and SMBus Voltage-Level Translator DESCRIPTION FEATURES • • • • • • • • • • • • 1.0V to 5.5V VREF1 and 1.8V to 5.5V VREF2 (VREF1<VREF2) 2-Bit Bidirectional Translator for SDA and SCL Lines in Mixed-Mode I2C Applications Compatible with I2C and SMBus Less Than 1.5ns Maximum Propagation Delay to Accommodate Standard-Mode and FastMode I2C Devices and Multiple Masters Provides bidirectional voltage translation with no direction pin Allows Voltage-Level Translation Between ‒1.0V VREF1 and 1.8V, 2.5V, 3.3V or 5V VREF2 ‒1.2V VREF1 and 1.8V, 2.5V, 3.3V or 5V VREF2 ‒1.8V VREF1 and 2.5V, 3.3V or 5V VREF2 ‒2.5V VREF1 and 3.3V or 5V VREF2 ‒3.3V VREF1 and 5V VREF2 Low 3.5Ω ON-State Connection Between Input and Output Ports Provides Less Signal Distortion Open-Drain I2C I/O Ports (SCL1, SDA1, SCL2 and SDA2) High-Impedance SCL1, SDA1, SCL2 and SDA2 Pins for EN = Low Lock-Up-Free Operation for Isolation When EN = Low 5V Tolerant I2C I/O Ports to Support MixedMode Signal Operation Extended Temperature: -40°C to +85°C APPLICATIONS • • • • I2C, SMBus, PMBus, MDIO, UART, Low-Speed SDIO, GPIO, and Other Two-Signal Interfaces Automotive Head Units Automotive Instrument Clusters Automotive Driver Assistance Cameras This dual bidirectional I2C and SMBus voltage-level translator, with an enable (EN) input, is operational from 1.0V to 5.5V VREF1 and 1.8V to 5.5V VREF2. The RS0302 allows bidirectional voltage translations between 1.0V and 5V without the use of a direction pin. The low ON-state resistance (RON) of the switch allows connections to be made with minimal propagation delay. When EN is HIGH, the translator switch is ON, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, respectively, allowing bidirectional data flow between ports. When EN is LOW, the translator switch is off, and a high-impedance state exists between ports. In I2C applications, the bus capacitance limit of 400 pF restricts the number of devices and bus length. Using the RS0302 enables the system designer to isolate two halves of a bus; thus, more I2C devices or longer trace length can be accommodated. The RS0302 also can be used to run two buses, one at 400kHz operating frequency and the other at 100kHz operating frequency. If the two buses are operating at different frequencies, the 100kHz bus must be isolated when the 400kHz operation of the other bus is required. If the master is running at 400kHz, the maximum system operating frequency may be less than 400kHz because of the delays added by the repeater. The RS0302 are available in green SOT23-8 and DFN1.4x1.0-8L packages. It operates over an ambient temperature range of -40°C to +85°C. Device Information (1) PART NUMBER RS0302 RS0302 (1) REV A.2 1 / 13 SOT23-8 BODY SIZE (NOM) 1.60mm×2.92mm DFN1.4x1.0-8L 1.00mm×1.40mm PACKAGE For all available packages, see the orderable addendum at the end of the data sheet. www.run-ic.com PDF
Документация на серию RS0302 

Дата модификации: 17.01.2022

Размер: 621.2 Кб

13 стр.

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