TCA9416 Series
Ultra-low voltage I2C translator with rise time accelerators
Manufacturer: Texas Instruments
Catalog
Ultra-low voltage I2C translator with rise time accelerators
Key Features
• 2-bit bidirectional translator for SDA and SCL lines in I2C applicationsProvides bidirectional voltage translation with no direction pinHigh-impedance output SCL_A, SDA_A, SCL_B, SDA_B pins when OE = 0 V or VCC= 0 VInternal 10-kΩ pull-up resistor on all SDA and SCL pins are enabled based on respective VCCvoltage1.08 V to 3.6 V on both A and B portsVCCIsolation feature: If either VCCinput is at GND, both ports are in the high-impedance state (excluding pull-ups)No power-supply sequencing required: either VCCAor VCCBcan be ramped firstLow Ioffof 2.5 µA when either VCCAor VCCB= 0 VOE input can be tied directly to VCCAor controlled by GPIOLatch-up performance exceeds 100 mA per JESD 78, class IIESD Protection exceeds JESD 222500-V Human-body model (A114-B)1500-V Charged-device model (C101)2-bit bidirectional translator for SDA and SCL lines in I2C applicationsProvides bidirectional voltage translation with no direction pinHigh-impedance output SCL_A, SDA_A, SCL_B, SDA_B pins when OE = 0 V or VCC= 0 VInternal 10-kΩ pull-up resistor on all SDA and SCL pins are enabled based on respective VCCvoltage1.08 V to 3.6 V on both A and B portsVCCIsolation feature: If either VCCinput is at GND, both ports are in the high-impedance state (excluding pull-ups)No power-supply sequencing required: either VCCAor VCCBcan be ramped firstLow Ioffof 2.5 µA when either VCCAor VCCB= 0 VOE input can be tied directly to VCCAor controlled by GPIOLatch-up performance exceeds 100 mA per JESD 78, class IIESD Protection exceeds JESD 222500-V Human-body model (A114-B)1500-V Charged-device model (C101)
Description
AI
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 A-side 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 compatible with standard speeds where the frequency of SCL is 100 kHz (Standard-mode), 400 kHz (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 edges.
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 A-side 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 compatible with standard speeds where the frequency of SCL is 100 kHz (Standard-mode), 400 kHz (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 edges.
