74HC14D

Overview

The Toshiba 74HC14D is a high-speed CMOS hex Schmitt inverter fabricated with silicon gate C2MOS technology. It operates within a supply voltage range of 2.0 V to 6.0 V and features balanced propagation delays (tPLH ≈ tPHL). The device provides low power dissipation, with a maximum quiescent current of 1.0 µA at 25 °C. It achieves typical propagation delays of 11 ns at 5 V and includes input protection circuits against static discharge.

Feature Summary

• Hex Schmitt trigger inputs provide hysteresis for noise immunity
• High-speed operation comparable to equivalent LSTTL devices
• Low power consumption characteristic of CMOS technology
• Balanced propagation delays for symmetrical signal transitions

Applications

• Line receivers for slow input signals
• Signal conditioning and waveform shaping
• Noise filtering in digital logic circuits

Procurement Notes

Verify the specific package type and manufacturer revision when ordering. Confirm that the component meets required environmental standards such as RoHS compliance for the intended application region. Ensure proper handling precautions are followed during assembly to prevent electrostatic discharge damage to the CMOS inputs.

Selection Notes

Select this component when Schmitt trigger functionality is required for noisy environments or slow-rising signals. It serves as a direct functional replacement for standard inverters where hysteresis improves signal integrity. Consider the operating temperature range and supply voltage requirements to ensure compatibility with the system design constraints.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic integrated circuits. It shares pin configuration and function with the 74HC04D but incorporates Schmitt trigger inputs instead of standard logic inputs. The device is manufactured using Toshiba's silicon gate C2MOS process technology.

Replacement Considerations

The 74HC14D is functionally compatible with other manufacturers' 74HC14 parts. Verify pinout compatibility and electrical specifications before substitution. Note that the 74HC14D differs from the 74HCT14D, which utilizes TTL-compatible input thresholds.