74HC14PW,118

Overview

The Nexperia 74HC14PW,118 is a hex inverting Schmitt trigger housed in a TSSOP14 (SOT402-1) package. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range from -40 °C to +125 °C. The device features Schmitt-trigger inputs that transform slowly changing signals into sharply defined outputs. Inputs include clamp diodes for interfacing with voltages exceeding VCC. Static characteristics specify input leakage current up to ±1.0 μA at maximum temperature. Dynamic performance includes propagation delays ranging from 12 ns to 190 ns depending on voltage and temperature.

Feature Summary

• Hex inverter configuration with Schmitt-trigger inputs for noise immunity
• CMOS low power dissipation with unlimited input rise and fall times
• Input clamp diodes enable direct interfacing to voltages above VCC
• 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 specific ordering suffix

Selection Notes

Select this component when designing circuits requiring signal conditioning with hysteresis to eliminate jitter on slow-rising edges. The TSSOP14 package is suitable for space-constrained surface-mount designs. Ensure the operating voltage remains within the 2.0 V to 6.0 V range to maintain specified switching thresholds and propagation delays across the industrial temperature spectrum.

Part Context

This part belongs to the 74HC logic family, characterized by CMOS technology and compatibility with standard TTL logic levels. The 74HC14 variant specifically adds Schmitt-trigger functionality to the standard inverter gate, distinguishing it from non-hysteretic counterparts like the 74HC04. It is manufactured by Nexperia USA Inc. under the product data sheet Rev. 10.

Replacement Considerations

The 74HCT14PW,118 serves as a functional replacement with TTL-compatible input thresholds, though it requires a 4.5 V to 5.5 V supply. Other packages such as SO14 (74HC14D) or DHVQFN14 (74HC14BQ) offer pin-compatible alternatives if different form factors are required.

FAQ

How do the input clamp diodes function?

The inputs include clamp diodes that allow the use of current-limiting resistors to interface with voltages exceeding the supply voltage (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, providing high noise immunity.