logic

SN54HC14

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

01 — Overview

This Texas Instruments datasheet covers the SN54HC14 and SN74HC14, which are Hex Schmitt-Trigger Inverters in the HC logic family. The document defines their electrical specifications, operating conditions, and switching characteristics for industrial (SN54) and commercial (SN74) temperature ranges. Key parameters include a wide supply voltage range of 2V to 6V, a maximum quiescent current of 20 μA, typical propagation delays under 38 ns, and output drive capabilities up to ±4 mA at 5V. These devices feature six independent inverters designed for low power consumption and high noise immunity.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	40 µA	—	VI = VCCor 0,; IO = 0; 6 V; 2
output current	—	25 mA	—
supply voltage range	2 V	—	6 V
operating temperature	-55 °C	—	125 °C
propagation delay	—	25 ns	—
output voltage high	—	4.5 V	—
output voltage low	—	100 mV	—

03 — Alternatives

Closest matches to SN54HC14

74HC14BQ 2.2× lower output voltage high, 1.6× higher propagation delay, 1.4× lower operating temperature

74HC164BQ 2.5× higher quiescent current, 2.2× lower output voltage high, 1.6× higher propagation delay

74HC595D 3.8× higher quiescent current, 2.2× lower output voltage high, 2.1× higher propagation delay

74HCT165BQ 2.2× lower output voltage high, 2.1× higher propagation delay, 1.2× higher supply voltage range

74HCT595BQ 3.8× higher quiescent current, 2.2× lower output voltage high, 1.4× higher output current

74LVC245A 3.8× lower propagation delay, 3.7× lower output voltage high, 2.0× higher output current

74LVC2G14GM 4.5× lower propagation delay, 3.7× lower output voltage high, 2.0× higher output current

NL17SZ08 4.0× lower propagation delay, 3.2× lower output voltage high, 2.0× higher output current

04 — FAQ

Frequently asked questions

What is the maximum operating temperature for the SN54HC14?

The maximum operating temperature is 125 °C.

What is the output current of the SN54HC14?

The output current is 25 mA.

What is the output voltage high?

The output voltage high is 4.5 V.

What is the maximum output voltage low?

The output voltage low is 100 mV.

What is the propagation delay of the SN54HC14?

The propagation delay is 25 ns.

What is the quiescent current when VI = VCC or 0, IO = 0, and VCC = 6 V?

The quiescent current is 40 µA.

What is the supply voltage range for the SN54HC14?

The supply voltage range is 6 V.

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