SN74AUP1T34-Q1 - 1-Bit Dual-Supply Level Translator | Texas Instruments
MPN: SN74AUP1T34-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.38 | $3.80 |
| 100 | $0.3 | $30.00 |
| 500 | $0.25 | $125.00 |
| 1,000 | $0.21 | $210.00 |
| 3,000 | $0.18 | $540.00 |
Drop-in alternatives for SN74AUP1T34-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SN74AUP1T34DCKR
β Drop-Inπ Reference alternative (not in catalog)
SN74LVC1T45DCKR
β Drop-Inβ In Stock
$0.16 / Unit
View Datasheet βSN74LV1T34DCKR
β Drop-Inπ Reference alternative (not in catalog)
SN74AUP1T34-Q1 Maximum Ratings & Electrical Characteristics
| Function | 1-bit noninverting voltage-level translator |
| Translation Direction | Unidirectional (A to B) |
| Supply Rails | Dual (VCCA and VCCB), configurable |
| VCCA Range | [DATA_NEEDED: VCCA range] |
| VCCB Range | [DATA_NEEDED: VCCB range] |
| Output Type | Push-Pull |
| Channels | 1 |
| Bits per Element | 1 |
| Polarity | Non-Inverting |
| Package | SC-70-5 (DCK) |
| Operating Temperature | -40C to +125C |
| Qualification | AEC-Q100 qualified (automotive) |
| Mounting Type | Surface Mount |
| Family | AUP (Advanced Ultra-low Power) |
| Propagation Delay | [DATA_NEEDED: propagation delay] |
| RoHS Status | Compliant |
SN74AUP1T34-Q1 Pin Configuration
| Pin 1 | A β Input referenced to VCCA - signal to be translated |
| Pin 2 | GND β Ground (0 V reference) |
| Pin 3 | B (Y) β Noninverting output referenced to VCCB |
| Pin 4 | VCCB β B-port supply rail |
| Pin 5 | VCCA β A-port supply rail |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SN74AUP1T34-Q1 is suitable for 6 applications: Automotive Body Electronics, Mixed-Voltage MCU-to-Peripheral Interface, Automotive Cluster and Infotainment, Sensor Signal Interface, Gateway and Networking Modules, Industrial Control and PLC I/O.
Automotive Body Electronics
In automotive body control and lighting modules, MCUs running at 1.8V frequently need to drive 3.3V or 5V peripherals such as transceivers and LED drivers. The SN74AUP1T34-Q1 fits because it is AEC-Q100 qualified and rated -40C to +125C, surviving under-hood and near-luminaire thermal environments. Its dual configurable rails allow VCCA=1.8V, VCCB=3.3V setups, and the push-pull output drives the load directly with no pull-up resistors, improving edge rates and reducing BOM count in single-signal interface points.
Recommended
Mixed-Voltage MCU-to-Peripheral Interface
When a 1.8V microcontroller communicates with 3.3V sensors or memories, a single-bit translator such as the SN74AUP1T34-Q1 bridges one signal (chip-select, enable, or interrupt) per device. The dual-supply architecture means signal polarity and logic levels are always well-defined regardless of direction of translation, unlike resistor-divider down-shift which degrades noise margin. The AUP family's ultra-low dynamic power keeps standby current minimal in always-on automotive or IoT nodes, and the 5-pin SC-70 footprint consumes minimal board area.
Recommended
Automotive Cluster and Infotainment
Instrument clusters and infotainment head units mix 1.8V SoC I/O with 3.3V display, audio, and touch-controller interfaces. The SN74AUP1T34-Q1 provides one clean, low-jitter translation channel with push-pull output, avoiding the RC-slowed edges of divider networks that can corrupt fast enable or reset lines. AEC-Q100 qualification and -40C to +125C rating cover automotive interior thermal profiles, and the tiny SC-70 package fits dense PCB layouts around connectors and display FPC terminations.
Recommended
Sensor Signal Interface
Low-voltage sensors and temperature monitors (e.g., 1.8V digital outputs) often need their alert or data lines read by 3.3V logic. The SN74AUP1T34-Q1 translates the sensor output up to the controller domain while maintaining fast, clean edges with its push-pull driver. Because VCCA and VCCB are independent, the sensor supply domain and controller supply domain can be powered and sequenced flexibly. Its ultra-low AUP quiescent power suits battery-backed or always-on sensing nodes in automotive and industrial monitoring.
Recommended
Gateway and Networking Modules
Automotive Ethernet and CAN/LIN gateway modules combine low-voltage processors with 3.3V transceivers. A single SN74AUP1T34-Q1 per enable or interrupt line ensures level-clean signaling between domains, with propagation characteristics well controlled by the AUP family. Compared to discrete transistor level shifters, the integrated translator provides symmetric rise/fall edges and specified drive across temperature, improving timing margins on reset and sleep-control lines. AEC-Q100 qualification supports the automotive networking environment directly.
Recommended
Industrial Control and PLC I/O
Industrial controllers mix 1.8V/2.5V DSP I/O with 3.3V or 5V field-side logic. The SN74AUP1T34-Q1 shifts individual control signals with defined thresholds from two independent rails, and the -40C to +125C range covers industrial cabinets despite being an automotive-qualified part. Using one translator per signal gives designers granular control over direction and domain assignment, and the push-pull output drives optocoupler or buffer inputs directly without pull-up resistors, simplifying PLC digital-input front ends.
Recommended
Recommended Products Summary
Engineering reference data for SN74AUP1T34-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74AUP1T34DCKR | SN74LVC1T45DCKR | SN74LV1T34DCKR |
|---|---|---|---|---|
| Package | SC-70-5 (DCK) | SC-70-5 (DCK) - same | SC-70-5 (DCK) - same | SC-70-5 (DCK) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Architecture | Dual supply (VCCA/VCCB) | Dual supply | Dual supply + DIR pin | Single supply (up-translation only) |
| AEC-Q100 Qualified | Yes | No | No | No |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Output Type | Push-Pull | Push-Pull | Push-Pull | Push-Pull |
| Channels | 1 | 1 | 1 (bidirectional via DIR) | 1 |
| Pricing (1 pc, as of 2026-08-28) | ~$0.42 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- AEC-Q100 automotive qualification (vs SN74AUP1T34DCKR)
- Dual independent supply rails enable down-translation (vs SN74LV1T34DCKR)
- Fixed unidirectional simplicity (vs SN74LVC1T45DCKR)
Design Notes
Decouple both VCCA and VCCB with 100 nF ceramic capacitors placed within 2 mm of the pins, per TI logic application guidance. Because the two rails are independent, define a power-up sequence or verify the datasheet Ioff/partial-power-down behavior; undefined outputs during startup can falsely trigger downstream enables. Ensure both rails stay within datasheet-recommended ranges before asserting input signals.
This translator is strictly unidirectional from A to B. Do not back-drive the B output from a source with lower impedance than the output drive, especially during VCCB power-down, or parasitic currents and latch-up risk increase. For bidirectional lines such as I2C, use an open-drain translator (TXS/LSF families) instead.
The SC-70-5 footprint is tiny (2.0 x 2.1 mm); use standard DCK land pattern and short, direct traces for the translated signal to preserve edge rates. Keep the A-side trace away from noisy switching nodes since input thresholds are referenced to VCCA. Thermal management is unnecessary at single-gate power levels.
Compliance Information
RoHS compliant and lead-free per TI product page and DigiKey listing. AEC-Q100 automotive qualified per TI datasheet. REACH and halogen-free declarations available via TI environmental certificates on TI.com.
