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Product Detailed Parameters
- Description：6-CH, 2-V TO 6-V INVERTERS WITH
- Series：74AC
- 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 ~ 6V
- Current - Quiescent (Max)：2 µA
- Current - Output High, Low：24mA, 24mA
- Input Logic Level - Low：1V ~ 2.3V
- Input Logic Level - High：2.2V ~ 3.9V
- Max Propagation Delay @ V, Max CL：10ns @ 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 SN74AC14BQAR is a hex Schmitt-trigger inverter from the Texas Instruments SN74AC14 series, housed in a 14-pin WQFN package. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range of -40°C to +125°C. The device features balanced CMOS push-pull outputs capable of sourcing and sinking up to 24 mA at 4.5 V or 5.5 V. Maximum propagation delay is specified at 9.5 ns when operating at 5 V.
Feature Summary
- Incorporates Schmitt-trigger action to provide distinct positive-going and negative-going input threshold levels for noise immunity.
- Features balanced CMOS push-pull outputs that can source and sink similar currents for clean signal inversion.
- Inputs are tolerant to voltages up to 6 V, allowing compatibility with higher voltage logic levels.
Applications
- Synchronizing inverted clock inputs
- Debouncing mechanical switches
- Inverting digital signals
Procurement Notes
Verify the specific BQA (WQFN) package designation and the 'R' suffix indicating tape-and-reel packaging upon ordering. Confirm that the required operating temperature range aligns with the industrial specification (-40°C to +125°C). Ensure design layouts account for the thermal pad connection requirements specific to this package type.
Selection Notes
Select this component when a hex inverter with Schmitt-trigger noise filtering is required in a compact surface-mount form factor. The AC logic family provides higher drive capability compared to AHC variants. Verify that the 2 V to 6 V supply range meets system power constraints and that the 24 mA output current is sufficient for the intended load conditions.
Part Context
This part belongs to the SNx4AC14 family of hex Schmitt-trigger inverters manufactured by Texas Instruments. The 'AC' designation indicates Advanced CMOS technology optimized for 5 V operation while maintaining compatibility across the 2 V to 6 V range. The BQA suffix specifically identifies the 14-pin WQFN physical package variant.
Replacement Considerations
SN74AC14DR
FAQ
How does the Schmitt-trigger feature benefit signal processing?
It provides different input threshold levels for rising and falling signals, allowing the device to trigger cleanly from slow input ramps and reject noise effectively.
What is the maximum input voltage tolerance?
The inputs accept voltages up to 6 V, which allows them to interface with systems operating at higher logic levels than the supply voltage.
