SN74AXC1T45-Q1 Automotive single-bit dual-supply bus transceiver |

SN74AXC1T45-Q1 (PREVIEW) Automotive single-bit dual-supply bus transceiver


Sample availability

DCK package is in preview. Preproduction samples are available (PCAXC1T45QDCKRQ1).  Request now


The SN74AXC1T45-Q1 is AEC-Q100 qualified single-bit non-inverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCA and VCCB supplies as low as 0.65 V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65 V to 3.6 V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65 V to 3.6 V. Additionally, the SN74AXC1T45-Q1 is compatible with a single-supply system.

The DIR pin determines the direction of signal propagation. With the DIR pin configured HIGH, translation is from Port A to Port B. With DIR configured LOW, translation is from Port B to Port A. The DIR pin is referenced to VCCA, meaning that its logic-high and logic-low thresholds track with VCCA.

This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry ensures that 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.

The VCC isolation feature ensures that if either VCCA or VCCB is less than 100 mV, both I/O ports enter a high-impedance state by disabling their outputs.

Glitch-free power supply sequencing allows either supply rail to be powered on or off in any order while providing robust power sequencing performance.


  • AEC-Q100 Qualified for Automotive Applications
  • Fully Configurable Dual-Rail Design Allows Each Port to Operate With a Power Supply Range from 0.65 V to 3.6 V
  • Operating Temperature: –40°C to +125°C
  • Glitch-Free Power Supply Sequencing
  • Maximum Quiescent Current (ICCA + ICCB) of 8 µA (85°C Maximum) and 14 µA (125°C Maximum)
  • Up to 500-Mbps Support When Translating from 1.8 to 3.3V
  • VCC Isolation Feature
    • If Either VCC Input is Below 100 mV, All I/Os Outputs are Disabled and Become High-Impedance
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 8000-V Human Body Model
    • 1000-V Charged-Device Model

All trademarks are the property of their respective owners.


Compare all products in Direction controlled voltage translation Email Download to Excel
Part number Order Technology Family Application Bits (#) High input voltage (Min) (Vih) High input voltage (Max) (Vih) Output voltage (Min) (V) Output voltage (Max) (V) IOH (Max) (mA) IOL (Max) (mA) Package Group Rating
SN74AXC1T45-Q1 Order now AXC     GPIO     1     0.455     3.6     0.65     3.6     -12     12     SC70 | 6     Automotive    
SN74AVC2T45-Q1 Order now AVC     GPIO
2     0.78     3.6     1.2     3.6     -12     12     VSSOP | 8     Automotive    
SN74AVC4T245-Q1 Order now AVC     UART
4     0.78     3.6     1.2     3.6     -12     12     VQFN | 16     Automotive    
SN74AXC8T245-Q1 Samples not available AXC     RGMII     8     0.455     3.6     0.65     3.6     -12     12     TSSOP | 24     Automotive    
SN74LVC1T45-Q1 Order now LVC     GPIO     1     1.08     5.5     1.65     5.5     -32     32     SC70 | 6     Automotive