logic

74HC14

Full part number: 74HC14BQ

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This Nexperia datasheet covers the 74HC14 and 74HCT14 hex inverting Schmitt trigger logic devices. It defines their scope for wave shaping, multivibrators, and noise immunity applications. Key parameters include a wide supply voltage range of 2.0 to 6.0 V, high noise immunity, unlimited input rise/fall times, and latch-up performance exceeding 100 mA. The document details six package options (SO14, TSSOP14, DHVQFN14) with temperature ratings from -40°C to +125°C, along with pin descriptions and functional tables.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	30 µA	108 µA	per input pin; VI = VCC- 2.1 V; other pins at VCCor GND; IO = 0 A; VCC = 4.5 V to 5.5 V
output current	—	25 mA	—
supply voltage range	2 V	5 V	6 V
operating temperature	-40 °C	25 °C	125 °C
power dissipation	—	—	500 mW	[2]
input capacitance	—	3.5 pF	—
propagation delay	—	41 ns	125 ns	VCC = 2.0 V
output voltage high	1.9 V	2 V	—	IO = -20 µA; VCC = 2.0 V
output voltage low	—	0 V	100 mV	IO = 20 µA; VCC = 2.0 V

03 — Alternatives

Closest matches to 74HC14

74HCT165BQ 1.7× higher operating temperature, 1.3× higher propagation delay, 1.2× higher quiescent current

74HC164BQ 3.3× higher quiescent current, 1.2× lower output current, similar input capacitance

74HC595D 5.0× higher quiescent current, 1.4× higher output current, 1.3× higher propagation delay

74HCT595BQ 5.0× higher quiescent current, 1.6× lower propagation delay, 1.4× higher output current

74LVC245A 6.3× lower propagation delay, 2.0× higher output current, 1.9× lower supply voltage range

74LVC2G14GM 7.3× lower propagation delay, 2.0× higher output current, 2.0× lower power dissipation

NL17SZ125 4.6× lower propagation delay, 3.3× lower power dissipation, 1.4× lower input capacitance

NC7WZ16 7.5× lower propagation delay, 2.8× lower power dissipation, 2.0× higher output current

04 — FAQ

Frequently asked questions

What is the input capacitance of the 74HC14BQ?

The input capacitance is 3.5 pF.

What is the operating temperature specified for the 74HC14BQ?

The operating temperature is 25 °C.

What is the output current of the 74HC14BQ?

The output current is 25 mA.

What is the output voltage high when IO = -20 µA and VCC = 2.0 V?

The output voltage high is 2 V.

What is the output voltage low when IO = 20 µA and VCC = 2.0 V?

The output voltage low is 0 V.

What is the power dissipation of the 74HC14BQ under condition [2]?

The power dissipation is 500 mW under condition [2].

What is the propagation delay of the 74HC14BQ at VCC = 2.0 V?

The propagation delay is 41 ns at VCC = 2.0 V.

What is the quiescent current per input pin when VI = VCC- 2.1 V, other pins are at VCC or GND, IO = 0 A, and VCC = 4.5 V to 5.5 V?

The quiescent current is 30 µA per input pin under the specified conditions.

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