Diodes Incorporated
X2 DFN1010 6

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

X2 DFN1410 6

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

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Single Bit Dual Power Supply Translating Buffer with 3 State Outputs

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The 74AUP1T34 is a single-bit, dual-supply, noninverting buffer translator suitable for transmitting a single logic bit across different voltage domains. It is a unidirectional translator from A to Y. The input pin A has input switching thresholds related to VCCA, operating from 0.9V to 3.6V. The output pin Y has a HIGH level output voltage that tracks VCCB, also operating from 0.9V to 3.6V. This arrangement allows for universal low-voltage translation between any voltages from 0.9V to 3.6V.

The three-state feature occurs when the VCCA power-supply voltages are zero. This is also an IOFF feature and allows the output to remain in a high-impedance state, preventing damaging backflow currents and providing power-down electrical isolation of up to 3.6V. If the VCCB is at ground, the input circuits at pin A are disabled and no input current flows regardless of any applied voltage between 0V and 3.6V.

The 74AUP1T34 is available in the SOT353, X2-DFN1410-6, and X2- DFN1010-6 packages, and is specified for operation from -40°C to +125°C among all supply voltages. The wide temperature ranges and high ESD tolerance facilitate their use in harsh applications.


  • Wide Supply Voltage Range:
    • VCC(A): from 0.9V to 3.6V
    • VCC(B): from 0.9V to 3.6V
  • ±6mA Output Drive at 3V
  • Low-Static Power Consumption; ICC = 5μA (Maximum)
  • High Noise Immunity (100mV Hysteresis Typical)
  • IOFF Supports Partial Power-Down Mode Operation
  • IOFF Controlled by VCCB Being at 0V
  • Input Isolation when VCCA is Ground; No Input Current Even when Floating
  • ESD Protection Exceeds JESD 22
    • Exceeds 5000V Human Body Model (A114)
    • Exceeds 1000V Charged Device Model (C101)
  • Latch-Up Exceeds 100mA per JESD 78, class II
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • An automotive-compliant part is available under separate datasheet (74AUP1T34Q)


  • Voltage level translation:
    • Well suited to join logic types operating at different voltages
  • Power-down signal isolation:
    • When VCCA = GND output is three-state
    • When VCCB = GND input is disabled and may be left floating
  • Wide array of products such as:
    • Cell phones, tablets, e-readers
    • PCs, notebooks, netbooks, ultrabooks
    • Networking, routers, gateways
    • Personal electronics
    • Telecommunications
    • Industrial devices

Product Specifications

Product Parameters

Function Transceiver
Type Buffers/Inverters/Transceivers
Compliance (Only Automotive supports PPAP) Standard
Channels 1
Family AUP
VCC Min (V) 0.9
VCC Max (V) 3.6
Input Type Standard CMOS
Output Type 3-State
Output Current (mA) 50

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