74HCT14BQ,115

Overview

The 74HCT14BQ,115 is a hex inverting Schmitt trigger manufactured by Nexperia USA Inc. It operates within a supply voltage range of 2.0 V to 6.0 V and complies with JEDEC standards JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V). The device features TTL input levels, unlimited input rise and fall times, and ESD protection exceeding 2000 V (HBM) and 1000 V (CDM). It is specified for ambient temperatures from -40 °C to +125 °C and utilizes a DHVQFN14 package.

Feature Summary

• Hex inverter configuration with Schmitt-trigger inputs
• TTL compatible input logic levels
• High noise immunity and low power dissipation
• Input clamp diodes for overvoltage interfacing

Applications

• Wave and pulse shapers
• Astable multivibrators
• Monostable multivibrators

Procurement Notes

Verify the specific ordering suffix '115' corresponds to the DHVQFN14 package variant when sourcing. Confirm that the procurement channel provides the official Nexperia datasheet Rev. 10 dated 29 February 2024 to ensure accurate electrical parameter alignment. Cross-reference the manufacturer part number against authorized distributor databases to validate authenticity before finalizing acquisition.

Selection Notes

Select this component for applications requiring signal conditioning with hysteresis to eliminate jitter on slowly changing inputs. The TTL input threshold compatibility allows direct interfacing with standard logic families without additional level shifting components. Ensure the design accommodates the thermal dissipation requirements associated with the DHVQFN14 package outline SOT762-1.

Part Context

This device belongs to the 74HCT series of high-speed Si-gate CMOS logic devices. It is pin-compatible with Low-power Schottky TTL (LSTTL) standards. The product line includes variants such as the 74HC14 and 74HCT14, offering flexibility in input logic thresholds while maintaining identical physical footprints across different package options like SO14 and TSSOP14.

Replacement Considerations

The 74HC14BQ,115 serves as a functional alternative but requires verification of input logic level compatibility, as it utilizes CMOS thresholds rather than TTL levels. Other package variants such as the 74HCT14D or 74HCT14PW may be considered if the DHVQFN14 footprint is not mandatory.

FAQ

How does the device handle slow input signals?

Schmitt trigger inputs transform slowly changing input signals into sharply defined, jitter-free output signals.

What is the purpose of the input clamp diodes?

The input clamp diodes enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.