TCA9416 Datasheet | Texas Instruments

Features - 2-bit bidirectional translator for SDA and SCL lines in I2C applications - Provides bidirectional voltage translation with no direction pin - High-impedance output SCL_A, SDA_A, SCL_B, SDA_B pins when OE = 0 V or VCC = 0 V - Internal 10-kΩ pull-up resistor on all SDA and SCL pins are enabled based on respective VCC voltage - 1.08 V to 3.6 V on both A and B ports - VCC Isolation feature : If either VCC input is at GND, both ports are in the high-impedance state (excluding pull-ups) - No power-supply sequencing required: either VCCA or VCCB can be ramped first - Low Ioff of 2.5 µA when either VCCA or VCCB = 0 V - OE input can be tied directly to VCCA or controlled by GPIO - Latch-up performance exceeds 100 m A per JESD 78, class II - ESD Protection exceeds JESD 22 - 2500-V Human-body model (A114-B) - 1500-V Charged-device model (C101) 2 Applications - Wearables - Personal electronics - Servers spacer 3 Description The TCA9416 is a 2-bit bidirectional I2C and SMBus voltage-level translator with an output enable (OE) input and rising and falling edge accelerators. It is operational from 1.08 V to 3.6 V on both the Aside and B-side. This allows the device to interface between lower and higher logic signal levels at any of the typical 1.2-V, 1.8-V, 2.5-V, and 3.3-V supply rails. The OE input pin is referenced to VCCA, can be tied directly to VCCA, but it is also 3.6-V tolerant. The OE pin can also be controlled and set to a logic low to place all the SCL and SDA pins in a high-impedance state, which significantly reduces the quiescent current consumption. Under normal I2C and SMBus configurations, the TCA9416 is patible with standard speeds where the frequency of SCL is 100 k Hz (Standard-mode), 400 k Hz (Fast-mode), or 1 MHz (Fast-mode Plus). The TCA9416 features internal 10-kΩ pull-up resistors on SCL_A, SDA_A, SCL_B, and SDA_B. Additional external pull-up resistors can be added to the bus to reduce the total pull-up resistance and speed up rising...