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Product Detailed Parameters
- Description：IC INVERT SCHMITT 6CH 6IN 14WQFN
- Series：74AHC
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Logic Type：Inverter
- Number of Circuits：6
- Number of Inputs：6
- Features：Schmitt Trigger
- Voltage - Supply：2V ~ 5.5V
- Current - Quiescent (Max)：1 µA
- Current - Output High, Low：8mA, 8mA
- Input Logic Level - Low：1.9V ~ 3.35V
- Input Logic Level - High：2.2V ~ 3.85V
- Max Propagation Delay @ V, Max CL：10.6ns @ 5V, 50pF
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Supplier Device Package：14-WQFN (3x2.5)
- Package / Case：14-WFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The SN74AHC14BQAR is a commercial-grade hex Schmitt-trigger inverter from the Texas Instruments AHC logic family. It operates within a supply voltage range of 2V to 5.5V and supports an operating temperature range of -40°C to +125°C. The device provides balanced output drive capabilities, sourcing and sinking up to 8mA at 5V. It features high ESD protection exceeding JESD standards and low power consumption with a maximum ICC of 20µA.
Feature Summary
- Schmitt-trigger inputs provide distinct positive and negative switching thresholds for enhanced noise immunity
- Wide operating voltage range accommodates various system logic levels
- High electrostatic discharge protection ratings ensure robust handling reliability
Applications
- UPS systems
- White goods
- Computer peripherals
- Printers
- AC servo drives
Procurement Notes
Verify the BQA package designation corresponds to the WQFN-14 form factor required for your PCB layout. Confirm that the commercial grade (-40°C to +125°C) meets your environmental specifications. Ensure unused inputs are tied to VCC or GND to prevent undefined states. Check the latest Package Option Addendum for current manufacturing status and lead finish details.
Selection Notes
Select this component when noisy signal environments require hysteresis to prevent oscillation. The wide voltage range allows compatibility with both 3.3V and 5V logic domains. Consider the WQFN package for space-constrained surface-mount designs requiring thermal efficiency. Verify that the 8mA drive capability matches the load requirements of downstream circuits.
Part Context
This part belongs to the SNx4AHC14 series of hex inverters featuring Schmitt-trigger inputs. The 'BQA' suffix specifically identifies the WQFN (Wettable Flanks Quad Flat No-leads) 14-pin package variant. It is designed for general-purpose digital applications where signal integrity and noise rejection are critical.
Replacement Considerations
SN74AHC14RGYR (VQFN-14 package)
FAQ
How does the Schmitt-trigger action benefit signal processing?
It creates different input threshold levels for rising and falling signals, preventing oscillation and excessive current draw caused by slow or noisy input transitions.
What is the recommended handling procedure for unused inputs?
All unused inputs must be connected to either VCC or GND to prevent floating voltages that result in undefined operational states and potential damage.
