Texas Instruments SN74LVC1G97YZPR

Overview

SN74LVC1G97YZPR from Texas Instruments is a configurable single-gate logic device supporting nine programmable functions-including AND, OR, NAND, NOR, inverter, noninverter, and 2-to-1 multiplexer-via three digital inputs (In0–In2) and one Schmitt-trigger output (Y). It operates across 1.65 V to 5.5 V VCC, delivers ±24 mA drive at 3.3 V, and features Ioff for live insertion and partial-power-down protection. It is used in embedded PC power sequencing and field transmitter sensor interface circuits.

For engineers reviewing the SN74LVC1G97YZPR datasheet, SN74LVC1G97YZPR pinout, SN74LVC1G97YZPR application, or SN74LVC1G97YZPR equivalent, key selection criteria include its 6-pin DSBGA package, 6.3 ns max propagation delay at 3.3 V, Schmitt-trigger input hysteresis (ΔVT = 0.53 V typ at 3 V), Ioff-enabled back-drive protection, and 5.5-V tolerant inputs enabling level translation in mixed-voltage systems.

Technical Context

The SN74LVC1G97YZPR implements a 3-input configurable logic gate with fixed pinout and user-selectable truth table mapping via external hardwiring of In0–In2. Its Schmitt-trigger inputs provide noise immunity with VT+ = 1.5 V and VT− = 0.84 V (typ at VCC = 3 V), enabling robust operation in noisy industrial sensor interfaces. The device uses CMOS technology with balanced output drive and supports down-translation from 5.5-V inputs to lower VCC levels.

It is fully specified for partial-power-down applications: when VCC = 0 V, Ioff limits current flow to ±10 µA, preventing back-drive damage during hot insertion or system-level power sequencing. All unused inputs must be tied to VCC or GND per TI SCBA004 guidelines to avoid floating states and undefined output behavior.

Key Specifications

Pinout & Package

SN74LVC1G97YZPR uses a 6-pin DSBGA (Die Size Ball Grid Array) package measuring 1.41 mm × 0.91 mm with bottom-side solder balls. This ultra-compact NanoFree™ package eliminates leadframe and molding compound, using the silicon die as the mechanical and thermal interface - ideal for space-constrained portable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar configurable logic gate applications.

Compared with SN74LVC1G57YZPR and SN74LVC1G98YZPR, the SN74LVC1G97YZPR uniquely balances nine-function configurability, Ioff-enabled hot-swap safety, and industry-standard DSBGA packaging - making it optimal for cost-sensitive, space-constrained embedded systems requiring flexible logic with robust power management.

Availability

SN74LVC1G97YZPR is available at Aetrix Electronics and suitable for barcode scanners, field transmitter sensors, embedded PCs, and network-attached storage (NAS) systems requiring stable component supply, long-term lifecycle support, and consistent DSBGA-6 sourcing.

Supply support for SN74LVC1G97YZPR 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 logic solutions, with decades of expertise in low-power, high-reliability IC design for industrial and consumer applications.

The SN74LVC1G97YZPR belongs to TI's LVC logic family, designed specifically for space-constrained, mixed-voltage embedded systems requiring configurable logic, robust ESD performance, and seamless integration into automated SMT assembly lines.

FAQ

What logic functions can be implemented with the SN74LVC1G97YZPR?

The SN74LVC1G97YZPR supports nine distinct logic configurations: 2-to-1 data selector (MUX), 2-input AND, 2-input OR with one inverted input, 2-input NAND with one inverted input, 2-input AND with one inverted input, 2-input NOR with one inverted input, 2-input OR, inverter, and noninverted buffer. These are selected by hardwiring the In0–In2 pins to VCC or GND according to TI's Function Selection Table - no programming or configuration registers are involved. Each configuration maps directly to a unique 3-bit input pattern.

Does the SN74LVC1G97YZPR support level translation between different voltage domains?

Yes, the SN74LVC1G97YZPR supports bidirectional level translation: its inputs tolerate up to 5.5 V regardless of VCC (e.g., 5 V sensor signal into 3.3 V system), and its outputs swing rail-to-rail from GND to VCC. When VCC = 2.5 V, the device accepts 3.3 V or 5 V inputs and produces 2.5 V logic-level outputs - enabling clean interfacing between legacy and modern voltage domains without external translators.

What is the purpose of the Ioff feature in the SN74LVC1G97YZPR?

The Ioff feature in the SN74LVC1G97YZPR disables output drivers and limits leakage current to ±10 µA when VCC = 0 V. This prevents damaging back-current flow through the device during live insertion, partial power-down, or hot-swap events - critical in modular systems like NAS enclosures or field transmitter modules where subsystems may be powered independently. It eliminates the need for external isolation components.

How does the Schmitt-trigger input improve noise immunity in the SN74LVC1G97YZPR?

The SN74LVC1G97YZPR features Schmitt-trigger inputs with separate positive-going (VT+) and negative-going (VT−) thresholds - e.g., 1.5 V and 0.84 V respectively at VCC = 3 V - yielding 0.66 V hysteresis. This prevents oscillation on slow or noisy edges (e.g., from thermistors or mechanical switches), ensuring clean, bounce-free logic transitions even with millisecond-scale rise times or EMI-coupled interference in industrial environments.

Can unused inputs on the SN74LVC1G97YZPR be left floating?

No, unused inputs on the SN74LVC1G97YZPR must never be left floating. TI explicitly requires all unused In0, In1, or In2 pins to be tied to either VCC or GND to ensure predictable output behavior and prevent increased ICC or undefined logic states. Floating inputs cause unstable threshold crossing, excessive power consumption, and potential latch-up - per TI application note SCBA004. This applies regardless of configured logic function.