Texas Instruments SN74LV14AMPWREPG4

Overview

SN74LV14AMPWREPG4 from Texas Instruments is a radiation-hardened, high-reliability hex Schmitt-trigger inverter IC designed for space-grade and extended-temperature applications. It operates across 2 V to 5.5 V V_CC, features I_off partial-power-down protection, supports mixed-mode voltage operation on all ports, and delivers hysteresis of 0.33 V (typ) at 3.3 V - enabling robust noise immunity in harsh environments such as satellite power sequencing and avionics sensor interfaces.

For engineers reviewing the SN74LV14AMPWREPG4 datasheet, SN74LV14AMPWREPG4 pinout, SN74LV14AMPWREPG4 application, or SN74LV14AMPWREPG4 equivalent, key selection considerations include its –55°C to +125°C operating range, TSSOP-14 package with 0.65-mm lead pitch, Schmitt-trigger input thresholds (V_T+ = 2.31 V, V_T– = 0.99 V at 3.3 V), and I_off-enabled backflow prevention during system power transitions.

Technical Context

This device implements six independent positive-logic inverters (Y = A̅) with built-in Schmitt-trigger inputs, providing hysteresis to reject slow-rising or noisy signals. Each channel exhibits rail-to-rail output swing, defined VOH/VOL levels across supply voltages, and guaranteed propagation delay (t_pd = 6.7–14 ns at 5 V, CL = 50 pF).

The SN74LV14AMPWREPG4 integrates I_off circuitry that disables outputs when V_CC = 0 V, preventing damaging current backflow during hot-insertion or partial-power-down sequences - a critical requirement in fault-tolerant spacecraft bus architectures and reconfigurable FPGA I/O conditioning.

Key Specifications

Pinout & Package

TSSOP-14 (PW) package, 5.0 mm × 4.4 mm body, 0.65 mm lead pitch, 1.2 mm max height, moisture sensitivity level (MSL) 1 - suitable for fine-pitch automated assembly and high-reliability conformal coating processes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex Schmitt-trigger inverter applications.

Compared with SN74LV14AMPWREPG4, SN74LV14ATPWREP lacks extended-temperature validation and radiation-hardened pedigree, while SN74LV14AMDREP trades compact TSSOP packaging and superior thermal resistance for SOIC compatibility - making the original part optimal for new space-grade designs demanding minimal size and maximum reliability under thermal stress.

Availability

SN74LV14AMPWREPG4 is available at Aetrix Electronics and suitable for satellite power sequencing, avionics discrete monitoring, and radiation-tolerant FPGA configuration requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for SN74LV14AMPWREPG4 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 high-reliability components for aerospace, industrial, and automotive markets.

The SN74LV14A-EP product line delivers enhanced-product (EP) versions of standard logic devices, engineered specifically for extended-temperature operation, DMS support, and qualification pedigree in mission-critical systems.

FAQ

What is the maximum operating temperature range for SN74LV14AMPWREPG4?

The SN74LV14AMPWREPG4 is fully specified for operation from –55°C to +125°C. This extended temperature range is validated per JEDEC standards including HAST, temperature cycling, and autoclave testing - confirming suitability for space-grade and high-reliability military applications where thermal extremes are routine. The SN74LV14AMPWREPG4 maintains full electrical performance across this entire range without derating.

Does SN74LV14AMPWREPG4 support partial-power-down mode?

Yes, SN74LV14AMPWREPG4 includes integrated I_off circuitry that actively disables outputs when V_CC = 0 V, limiting I_off current to 5 µA max. This feature prevents damaging current backflow through the device during hot-swap events or staged power sequencing - a critical capability in redundant power architectures used in satellites and avionics systems where SN74LV14AMPWREPG4 is commonly deployed.

What is the typical hysteresis voltage (ΔV_T) of SN74LV14AMPWREPG4 at 3.3 V supply?

The typical hysteresis voltage (ΔV_T = V_T+ – V_T–) for SN74LV14AMPWREPG4 is 0.33 V at V_CC = 3.3 V and T_A = 25°C. This value is confirmed in the Electrical Characteristics table of the official TI datasheet SCLS499C. The hysteresis provides robust noise immunity - rejecting up to ±165 mV of differential noise on input signals - which is essential for reliable operation in electrically noisy spacecraft and aircraft environments where SN74LV14AMPWREPG4 is frequently applied.

Is SN74LV14AMPWREPG4 pin-compatible with other variants in the SN74LV14A-EP family?

Yes, SN74LV14AMPWREPG4 shares identical pinout and functionality with SN74LV14ATPWREP and SN74LV14AMDREP - all are 14-pin hex Schmitt-trigger inverters with the same terminal assignments (inputs on odd pins 1/3/5/9/11/13, outputs on even pins 2/4/6/10/12/14, GND on pin 7, V_CC on pin 14). However, SN74LV14AMPWREPG4 is the only variant qualified for –55°C to +125°C operation in the TSSOP-14 (PW) package, making it the sole choice for new designs requiring both extended temperature and compact packaging.

What package type and dimensions does SN74LV14AMPWREPG4 use?

SN74LV14AMPWREPG4 uses the TSSOP-14 (PW) package: 5.0 mm × 4.4 mm body size, 0.65 mm lead pitch, 1.2 mm maximum height, and MSL-1 rating. Its JEDEC MO-153-compliant outline supports fine-pitch surface-mount assembly and conforms to IPC-7351 land pattern guidelines. The compact footprint and low profile make SN74LV14AMPWREPG4 ideal for space-constrained PCBs in satellite payloads and UAV flight controllers where thermal and mechanical reliability are paramount.