Texas Instruments SN74AUP1T57YFPR

Overview

SN74AUP1T57YFPR 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 (0.5 µA max at V_CC = 0 V), and ultra-low static power (0.5 µA typical ICC). It enables compact logic interface bridging in space-constrained battery-powered IoT sensor nodes.

For engineers reviewing the SN74AUP1T57YFPR datasheet, SN74AUP1T57YFPR pinout, SN74AUP1T57YFPR application, or SN74AUP1T57YFPR equivalent, key selection criteria include its 6-pin YFP WCSP package, 2.3–3.6 V supply range, nine programmable logic functions via input biasing, and compatibility with mixed-voltage I/O domains in portable embedded systems.

Technical Context

This device implements AUP (Advanced Ultra-Low-Power) logic technology optimized for sub-1-µA static current and dynamic power dissipation as low as 4 pF (C_pd) at 2.5 V. Its Schmitt-trigger inputs provide noise immunity with hysteresis of 0.25 V (min) at 3 V V_CC, enabling robust operation on slow-rising or noisy signals in analog-digital boundary applications.

The SN74AUP1T57YFPR uses passive configuration-tying inputs A, B, C to V_CC or GND-to select among nine logic functions (e.g., AND, NAND, XNOR, inverter, buffer) without external programming. Its I_off feature ensures <0.5 µA leakage when V_CC = 0 V, allowing safe back-driving of powered-down subsystems in partial-power-down architectures.

Key Specifications

Pinout & Package

NanoStar™ WCSP (YFP) package: 1.2 mm × 0.8 mm, 0.4 mm pitch, 6 solder bumps, Pb-free, bottom-side exposed die pad (no thermal pad connection required).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AUP1T57YFPR, SN74AUP1T58DBVR offers identical low-power performance but lacks reconfigurability, while SN74LVC1T45DBVR trades ultra-low power and I_off for broader V_CC tolerance and lower unit cost - making SN74AUP1T57YFPR optimal for miniaturized, battery-constrained designs demanding functional flexibility.

Availability

SN74AUP1T57YFPR is available at Aetrix Electronics and suitable for IoT sensor node interface, wearable power-management sequencing, and medical patch data acquisition requiring stable component supply across extended production lifecycles.

Supply support for SN74AUP1T57YFPR 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 leader specializing in analog, embedded processing, and connectivity technologies, with over 90 years of innovation in power management and signal chain solutions.

The SN74AUP1T57YFPR belongs to TI's AUP (Advanced Ultra-Low-Power) logic family, designed specifically for battery-operated and energy-harvesting applications where nanowatt static power, robust noise immunity, and minimal board area are critical design constraints.

FAQ

What logic functions can the SN74AUP1T57YFPR implement?

The SN74AUP1T57YFPR supports nine distinct logic functions-including 2-input AND, NAND, NOR, OR, XNOR, inverter, and noninverted buffer-by connecting its A, B, and C inputs to either V_CC or GND per the Function Selection Table in the datasheet. No external programming or configuration registers are required; the logic behavior is determined solely by DC biasing of these three pins.

Does the SN74AUP1T57YFPR support bidirectional voltage translation?

No, the SN74AUP1T57YFPR is a unidirectional translator: inputs A/B/C accept voltages up to 3.6 V regardless of V_CC, but the output Y is referenced to V_CC and cannot drive a higher-voltage domain. It translates from lower-voltage sources (e.g., 1.8 V) to the V_CC-referenced output level (e.g., 2.5 V or 3.3 V), not vice versa.

What is the purpose of the I_off feature in the SN74AUP1T57YFPR?

The I_off feature limits leakage current to ≤0.5 µA when V_CC = 0 V, enabling safe connection to live buses during system sleep or power-down modes. This prevents back-powering of the device and protects downstream circuitry - a critical capability in battery-backed real-time clocks, wearables with removable batteries, and hot-swap peripheral interfaces.

Can the SN74AUP1T57YFPR be used with 1.2-V input signals?

No. The SN74AUP1T57YFPR's input thresholds are specified for 1.8-V, 2.5-V, and 3.3-V logic families. At V_CC = 2.5 V, V_IL max is 0.6 V and V_IH min is 1.1 V; at V_CC = 3.3 V, V_IH min is 1.19 V. A 1.2-V signal falls below V_IH min in all configurations and will not register as a valid HIGH input.

How does the Schmitt-trigger input improve noise immunity in the SN74AUP1T57YFPR?

The SN74AUP1T57YFPR's Schmitt-trigger inputs provide 210 mV hysteresis (ΔV_T), meaning the rising threshold (V_T+) and falling threshold (V_T−) differ by that amount. This prevents multiple output toggles due to noise near the switching point - especially valuable for slow-rising signals from sensors, mechanical switches, or long PCB traces where ringing or EMI could otherwise cause glitches.