SN74AXC1T45-Q1 車載、シングルビット・デュアル電源バス・トランシーバ |

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Sample availability

DCK package is fully released. Production samples are available (SN74AXC1T45QDCKRQ1).  Order now

DRY package is in preview. Preproduction samples are available (PCAXC1T45QDRYRQ1).  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 3.3 V
  • VCC isolation feature
    • If Either VCC input is below 100 mV, all I/O 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

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Part number オーダー・オプション 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 ご注文 AXC     GPIO     1     0.455     3.6     0.65     3.6     -12     12     SC70 | 6
SON | 6    
SN74AVC2T45-Q1 ご注文 AVC     GPIO
2     0.78     3.6     1.2     3.6     -12     12     VSSOP | 8     Automotive    
SN74AVC4T245-Q1 ご注文 AVC     UART
4     0.78     3.6     1.2     3.6     -12     12     VQFN | 16     Automotive    
SN74AVC8T245-Q1 ご注文 AVC       8     0.78     3.6     1.2     3.6     -12     12     TSSOP | 24
VQFN | 24    
SN74AXC4T245 ご注文 AXC     UART
4     0.455     3.6     0.65     3.6     -12     12     TSSOP | 16
UQFN | 16    
SN74AXC4T245-Q1 ご注文 AXC     UART
4     0.455     3.6     0.65     3.6     -12     12     TSSOP | 16
UQFN | 16    
SN74AXC4T774 ご注文 AXC     SPI
4     0.455     3.6     0.65     3.6