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Product Detailed Parameters
- Description：IC INVERT SCHMITT 6CH 1-INP 14SO
- Series：74HCT
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- Logic Type：Inverter
- Number of Circuits：6
- Number of Inputs：1
- Features：Schmitt Trigger
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Max)：2 µA
- Current - Output High, Low：4mA, 4mA
- Input Logic Level - Low：0.5V ~ 0.6V
- Input Logic Level - High：1.9V ~ 2.1V
- Max Propagation Delay @ V, Max CL：34ns @ 4.5V, 50pF
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Supplier Device Package：14-SO
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Grade：-
- Qualification：-
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Overview
The 74HCT14D/AUJ is a hex inverting Schmitt trigger manufactured by Nexperia. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device features six independent inverters with Schmitt-trigger inputs, providing high noise immunity and unlimited input rise/fall times. It complies with JEDEC standard JESD7A and includes clamp diodes on all inputs. The component utilizes a SOIC-14 (SOT108-1) plastic small outline package.
Feature Summary
- Hex inverter configuration with Schmitt-trigger inputs for signal conditioning
- High noise immunity and tolerance for unlimited input rise and fall times
- Input clamp diodes enable interfacing to voltages exceeding VCC via current limiting resistors
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Applications
- Wave and pulse shapers
- Astable multivibrators
- Monostable multivibrators
Procurement Notes
Verify the ordering suffix AUJ corresponds to the SOIC-14 (SOT108-1) package variant. Confirm the specific revision level matches the required JEDEC standards and ESD protection specifications. Ensure the procurement source provides documentation confirming the HCT logic family compatibility with TTL levels.
Selection Notes
Select this component when TTL-level interfacing is required alongside Schmitt-trigger action. The HCT logic family ensures compatibility with standard TTL outputs while maintaining CMOS low power dissipation characteristics. Verify that the operating environment falls within the specified -40 °C to +125 °C temperature range for reliable operation.
Part Context
This part belongs to the 74HCT series of high-speed Si-gate CMOS devices. It is pin-compatible with Low-power Schottky TTL (LSTTL). The manufacturer is Nexperia, which acquired the logic business from NXP Semiconductors. The datasheet revision is dated 29 February 2024.
Replacement Considerations
The 74HC14D/AUJ is a compatible alternative within the same package offering CMOS input levels instead of TTL levels. Other package variants such as TSSOP14 or DHVQFN14 may be considered if form factor changes are acceptable.
FAQ
How do the input clamp diodes function?
The inputs include clamp diodes, which enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.
What is the purpose of the Schmitt-trigger inputs?
Schmitt trigger inputs transform slowly changing input signals into sharply defined, jitter-free output signals.
