NCA9306 2-bit bidirectional multi-voltage level translator open-drain push-pull Rev. 2 26 November 2021 Product data sheet 1. General description The NCA9306 is a 2 channel bidirectional IC and SMBus multi-voltage level translator with an enable (EN) pin input. It allows voltage translation between 0.95 V and 5 V without the use of a direction pin. It supports up to 100 MHz up translation and >100 MHz down translation at 30 pF capacitive load. There is no need for a direction pin which minimizes the system effort. The NCA9306 supports 5 V tolerant I/O pins to support mixed mode signal operation. The ability to set up different voltage translation levels on each channel makes the device very flexible and suitable for a lot of different applications. The low ON-state resistance R of the switch allows connections to be made with minimal ON propagation delay. When EN is HIGH, the translator switch is on, and the SCLA and SDAA I/O are connected to the SCLB and SDAB 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. As with the standard IC bus-system, pull-up resistors are required to provide the logic HIGH levels on the translators bus. The NCA9306 has a standard open-drain configuration of the IC-bus. The size of these pull-up resistors depend on the system. Each side of the translator must have a pull-up resistors. NCA9306 is designed to work with Standard-mode, Fast-mode and Fast-mode plus IC bus devices in addition to the SMBus devices. When the SDAA or SDAB pin is LOW, the clamp is in the ON-state and a low resistance connections exists between the SDAA and SDAB ports. Assuming the higher voltage is on the SDAB port when the SDAB port is HIGH, the voltage on the SDAA port is limited to the voltage set by refA. When the SDAA port is HIGH, the SDAB port is pulled to the refB supply voltage by the pull-up resistors. The SCLA or SCLB pins also follows the same behavior as described for SDAA or SDAB pins. 2. Features and benefits 2-channel bidirectional voltage translator for SDA and SCL lines in mixed mode IC bus applications Open-drain IC-bus I/O ports (SCLA, SDAA, SCLB and SDAB) Provides bidirectional voltage translation with no direction pin High-impedance SCLA, SDAA, SCLB and SDAB for EN = LOW Up translation < 100 MHz C = 30 pF L < 40 MHz C = 50 pF L Down translation > 100 MHz C = 30 pF L < 40 MHz C = 50 pF L Hot insertion Bidirectional voltage level translation between: 0.95 V and 1.8 V, 2.5 V, 3.3 V and 5.0 V 1.2 V and 1.8 V, 2.5 V, 3.3 V and 5.0 V 1.8 V and 2.5 V, 3.3 V and 5.0 V 2.5 V and 3.3 V and 5.0 V 3.3 V and 5.0 V Low standby current 5 V tolerant IC-bus I/O pins to support mixed mode signal operationNexperia NCA9306 2-bit bidirectional multi-voltage level translator open-drain push-pull Low R provides less signal distortion ON Latch-up performance exceeds 100 mA per JESD78 class II level A ESD protection: HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 2000 V CDM ANSI/ESDA/JEDEC JS-002 Class C3 exceeds 1000 V Specified from -40 C to +125 C 3. Applications GPIO, MDIO, PMBus, SMBus, SDIO, UART, IC, and other interfaces in Telecom infrastructure Industrial Personal computing Router and Industrial Automation 4. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version NCA9306DP -40 C to +125 C TSSOP8 plastic thin shrink small outline package 8 leads SOT505-2 body width 3 mm lead length 0.5 mm NCA9306DC -40 C to +125 C VSSOP8 plastic very thin shrink small outline package 8 leads SOT765-1 body width 2.3 mm NCA9306GX -40 C to +125 C X2SON8 plastic thermal enhanced extremely thin SOT1233-2 small outline package no leads 8 terminals body 1.35 0.8 0.32 mm 5. Marking Table 2. Marking Type number Marking code 1 NCA9306DP h9 NCA9306DC h9 NCA9306GX h9 1 The pin 1 indicator is located on the lower left corner of the device, below the marking code. 6. Functional diagram refA refB SCLA SCLB SDAA SDAB EN aaa-032229 Fig. 1. Logic symbol NCA9306 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 2 26 November 2021 2 / 14