74HC14BQ,115

Overview

The Nexperia 74HC14BQ,115 is a hex inverting Schmitt trigger integrated circuit manufactured by Nexperia USA Inc. It operates within a supply voltage range of 2.0 V to 6.0 V and features CMOS low power dissipation with high noise immunity. The device includes clamp diodes on inputs, allowing interfacing to voltages exceeding VCC via current limiting resistors. It transforms slowly changing input signals into sharply defined, jitter-free output signals. The component is specified for operation from -40 °C to +125 °C and complies with JEDEC standards JESD8C and JESD7A.

Feature Summary

• Schmitt-trigger inputs provide hysteresis to eliminate signal jitter and transform slow-rising waveforms into clean digital outputs.
• Integrated input clamp diodes enable direct interfacing with voltage sources higher than the supply rail when used with current-limiting resistors.
• High electrostatic discharge protection capability exceeds 2000 V under Human Body Model (HBM) testing and 1000 V under Charged Device Model (CDM) testing.

Applications

• Wave and pulse shaping circuits
• Astable multivibrators
• Monostable multivibrators

Procurement Notes

Verify the specific ordering suffix '115' corresponds to the DHVQFN14 package (SOT762-1) as documented in the official datasheet. Confirm that the required temperature range covers the full industrial specification up to +125 °C. Ensure design compliance with the absolute maximum ratings regarding supply voltage limits and total power dissipation derating curves provided in the product data sheet.

Selection Notes

Select this component when application requirements demand robust noise immunity through Schmitt-trigger action or when interfacing with signals exhibiting slow transition times. The wide supply voltage compatibility allows flexibility in system power architectures. Verify that the DHVQFN14 package dimensions align with the PCB footprint constraints and thermal management requirements of the target assembly process.

Part Context

This part belongs to the 74HC logic family, which offers performance compatible with Low-power Schottky TTL (LSTTL). The 'BQ' designation identifies the specific DHVQFN14 plastic dual-in-line compatible thermal enhanced very thin quad flat package variant. This packaging option provides a compact form factor suitable for space-constrained surface-mount designs while maintaining standard pinout compatibility with other devices in the series.

Replacement Considerations

Cross-reference with other manufacturers offering 74HC14 equivalents in DHVQFN14 packages. Verify pinout compatibility and electrical parameter alignment, particularly propagation delay and supply voltage ranges, before substitution.

FAQ

Can the 74HC14BQ,115 interface directly to voltages higher than VCC?

Yes, the inputs include clamp diodes that allow interfacing to voltages in excess of VCC, provided current limiting resistors are used to protect the device.

What is the purpose of the Schmitt-trigger inputs in this device?

The Schmitt-trigger inputs introduce hysteresis, which transforms slowly changing input signals into sharply defined, jitter-free output signals, thereby improving noise immunity.