Texas Instruments SN74AUP1T57DRYR

Overview

SN74AUP1T57DRYR from Texas Instruments is a single-supply voltage-level translator IC with configurable logic gate functionality, supporting 1.8 V ↔ 2.5 V and 1.8 V ↔ 3.3 V bidirectional translation, Schmitt-trigger inputs (ΔVT = 210 mV), I_off protection, and 4 mA output drive. It operates across 2.3 V–3.6 V supply range and is used in mixed-voltage interface bridging between microcontrollers and peripherals.

For engineers reviewing the SN74AUP1T57DRYR datasheet, SN74AUP1T57DRYR pinout, SN74AUP1T57DRYR application, or SN74AUP1T57DRYR equivalent, key selection criteria include voltage translation directionality, hysteresis margin for noisy environments, I_off behavior during partial power-down, configurable logic function mapping via A/B/C input biasing, and SON-6 package thermal performance.

Technical Context

The SN74AUP1T57DRYR implements a single-input configurable logic cell using three user-configurable inputs (A, B, C) tied to VCC or GND to select among nine standard gate functions-including AND, NAND, OR, NOR, XNOR, inverter, and buffer-without external components. Its Schmitt-trigger inputs provide 210 mV hysteresis (VT+ − VT−) to reject noise on slow-rising signals.

It features I_off circuitry enabling safe operation at VCC = 0 V while allowing up to 3.6 V on I/O pins, and delivers 4 mA output drive optimized to minimize overshoot/undershoot on PCB traces. The device uses TI's ultra-low-power AUP logic family with static ICC ≤ 0.9 mA and dynamic Cpd = 4 pF (VCC = 2.5 V).

Key Specifications

Pinout & Package

SN74AUP1T57DRYR uses a 6-pin SON (Small Outline No-Lead) package, DRY variant, measuring 1.5 mm × 1.4 mm × 0.6 mm max height, with exposed thermal pad and wettable flank side walls for automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage-level translation applications.

Compared with SN74AUP1T58DRYR and TXB0101DCKR, the SN74AUP1T57DRYR uniquely combines voltage translation, Schmitt-trigger noise immunity, and field-programmable logic in one SON-6 package - reducing BOM count and layout complexity in mixed-voltage control-path designs.

Availability

SN74AUP1T57DRYR is available at Aetrix Electronics and suitable for industrial sensor interfaces, IoT edge node voltage bridging, portable medical devices, automotive body control modules, and battery-powered embedded systems requiring stable component supply across extended temperature ranges (–40°C to 85°C).

Supply support for SN74AUP1T57DRYR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.

The SN74AUP1T57DRYR belongs to TI's AUP (Advanced Ultra-Low-Power) logic family, designed specifically for battery-operated and energy-sensitive applications where sub-µA static power and noise-immune signal integrity are critical.

FAQ

What logic functions can be configured using SN74AUP1T57DRYR?

The SN74AUP1T57DRYR supports nine configurable gate functions: 2-input AND, NOR (both inputs inverted), NAND (one input inverted), OR (one input inverted), AND (both inputs inverted), NOR, XNOR, inverter, and noninverted buffer. Configuration is achieved by hard-wiring inputs A, B, and C to VCC or GND per the Function Selection Table in the datasheet - no external programming or configuration registers required.

Does SN74AUP1T57DRYR support bidirectional voltage translation?

No, the SN74AUP1T57DRYR is a unidirectional translator: inputs A/B/C accept lower- or mixed-voltage signals (e.g., 1.8 V), while output Y is referenced to VCC (2.5 V or 3.3 V). It does not auto-detect direction or translate in reverse. For bidirectional data buses like I²C, TI recommends TXB0101 or similar auto-sensing translators instead of SN74AUP1T57DRYR.

What is the purpose of the I_off feature in SN74AUP1T57DRYR?

The I_off feature in SN74AUP1T57DRYR disables internal current paths when VCC = 0 V, limiting I/O leakage to ≤0.5 mA even if signals up to 3.6 V are applied to A, B, C, or Y pins. This prevents back-powering of powered-down subsystems and enables safe hot-insertion in modular systems - a critical requirement in portable and automotive applications where partial power-down is routine.

Can SN74AUP1T57DRYR operate at 2.3 V VCC?

Yes, SN74AUP1T57DRYR is fully specified from 2.3 V to 3.6 V VCC. At 2.3 V, it maintains guaranteed VT+ ≥ 0.6 V and VT− ≤ 0.6 V, supports IOL ≥ 3.1 mA, and delivers t_pd ≤ 2.9 ns (CL = 5 pF). This wide supply range accommodates battery voltage sag in coin-cell or Li-ion systems without logic failure or timing violation.

How does the Schmitt-trigger input improve noise immunity in SN74AUP1T57DRYR?

The Schmitt-trigger input in SN74AUP1T57DRYR provides 210 mV hysteresis (ΔVT = VT+ − VT−), meaning the rising threshold (VT+) and falling threshold (VT−) differ significantly. This prevents multiple output toggles caused by slow-rising or noisy input edges - especially beneficial for interfacing with mechanical switches, analog sensors, or long PCB traces where ringing or EMI would otherwise cause metastability or false triggering.