Texas Instruments SN74AXC1T45/SN74AXC1T45-Q1 Bus Transceivers
Texas Instruments SN74AXC1T45/SN74AXC1T45-Q1 Single-Bit Dual-Supply Bus Transceivers use two single configurable power-supply rails and are operational using both VCCA and VCCB supplies. The A port tracks VCCA, and the B port tracks VCCB, both accepting supply voltages from 0.65V to 3.6V. The DIR pin determines the direction of signal propagation. When the DIR pin is configured in HIGH mode, translation is from Port A to Port B. Translation is from Port B to Port A when configured in LOW mode. The DIR pin tracks logic-high and logic-low thresholds with VCCA.
The SN74AXC1T45/SN74AXC1T45-Q1 is ideal for partial-power-down applications using the Ioff current. No excessive current is drawn from or to an input, output, or combined I/O that is biased to a specific voltage while the device is powered down via the Ioff protection circuitry. If either VCCA or VCCB is less than 100mV, the VCC isolation feature ensures both I/O ports enter a high-impedance state by disabling their outputs. Providing robust power sequencing performance, the glitch suppression circuitry enables either supply rail to be powered on or off in any order. The SN74AXC1T45-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Up and down translation across 0.65V to 3.6V
- –40°C to +125°C Operating temperature
- Latch-up performance exceeds 100mA Per JESD 78, Class II
- Designed with glitch suppression circuitry to improve power sequencing performance
- Maximum quiescent current (ICCA + ICCB) of 6µA (85°C Maximum) and 14µA (125°C Maximum)
- Up to 500Mbps support when translating from 1.8V to 3.3V
- VCC Isolation feature
- If either VCC input is below 100mV, all I/Os outputs are disabled and become high-impedance
- Ioff Supports partial-power-down mode operation
- ESD Protection exceeds JESD 22
- 8000V Human body model
- 1000V Charged-device model
Applications
- Enterprise and communications
- Industrial
- Personal electronics
Datasheets
Associated Development Tool
Texas Instruments AVCLVCDIRCNTRL-EVM Direction Evaluation Module
Offers support for 1, 2, 4, and 8-ch LVC and AVC family direction-controlled translation devices.
Block Diagram
