SN74AHCT14BQAR

Overview

The SN74AHCT14BQAR is a commercial-grade hex Schmitt-trigger inverter from the SNx4AHCT14 family, manufactured by Texas Instruments. It contains six independent inverters performing the Boolean function Y = A with distinct positive-going and negative-going input thresholds. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature range of -40°C to +125°C. It utilizes WQFN (BQA) 14-pin packaging.

Feature Summary

• Inputs are TTL-voltage compatible
• Accepts very slow or noisy inputs
• ESD protection exceeds JESD 22 specifications

Applications

• Servers
• Network switches
• Telecom infrastructures
• Tests and measurements

Procurement Notes

Verify the specific BQA package designation and RoHS compliance status against the latest official datasheet revision T documentation. Confirm that the intended application environment remains within the specified commercial temperature limits (-40°C to +125°C). Ensure all unused inputs are biased to VCC or GND to prevent undefined operational states.

Selection Notes

Select this component when TTL-compatible logic levels are required alongside noise immunity provided by Schmitt triggers. The WQFN package is suitable for surface-mount applications requiring compact footprints. Verify that the load capacitance does not exceed the maximum switching characteristic limits defined in the electrical specifications table.

Part Context

This part belongs to the SNx4AHCT14 series of hex Schmitt-trigger inverters. The 'SN' prefix indicates a commercial-grade device, while the 'AHCT' suffix denotes high-speed CMOS technology with TTL-compatible inputs. The 'BQA' suffix specifically identifies the WQFN 14-pin package configuration offered by Texas Instruments.

Replacement Considerations

Other packages within the same SN74AHCT14 family, such as SOIC (DR), SSOP (DBR), or TVSOP (DGVR), offer identical electrical characteristics and pinout compatibility.