Build with SN54HC14 — Datasheet Specs & AI Design Help

00 — Overview

What the SN54HC14 does

The SNx4HC14 family comprises hex inverters with Schmitt-trigger inputs available in commercial, industrial, and military temperature grades. These devices operate across a wide voltage range of 2V to 6V and support fanout up to 10 LSTTL loads. Key specifications include a 2V to 6V operating range, -40°C to +85°C temperature range, and buffered inputs designed to debounce switches or synchronize inverted clock signals. The parts perform the Boolean function Y = A in positive logic and are typically used to invert digital signals in various logic applications.

Next step

Start building with SN54HC14 → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.

01 — Key specifications

Datasheet parameters

Datasheet parameters for SN54HC14
Parameter	Min	Typ	Max	Conditions	Source
quiescent current	—	2 µA	—	6 V; CONDITIONS = 40; icc; 5.6 Electrical Characteristics - 54	TI datasheet, p. 6 — 5.6 Electrical Characteristics - 54
output current (abs max)	—	—	25 mA	VO = 0 to VCC; io; 5.1 Absolute Maximum Ratings	TI datasheet, p. 4 — 5.1 Absolute Maximum Ratings
supply voltage range	2 V	5 V	6 V	vcc; 5.3 Recommended Operating Conditions	TI datasheet, p. 4 — 5.3 Recommended Operating Conditions
operating temperature	-55 °C	—	125 °C		TI datasheet, p. 5 — 5.6 Electrical Characteristics - 54
input capacitance	3 pF	10 pF	—	2 V to 6 V; CONDITIONS = 10; ci; 5.6 Electrical Characteristics - 54	TI datasheet, p. 6 — 5.6 Electrical Characteristics - 54
propagation delay	55 ns	—	125 ns	2 V; tpd	TI datasheet, p. 3 — Switching Characteristics
output voltage high	—	1.9 V	—	2 V; voh; 5.6 Electrical Characteristics - 54	TI datasheet, p. 6 — 5.6 Electrical Characteristics - 54
output voltage low	2 mV	100 mV	—	2 V; CONDITIONS = 0.1; vol; 5.6 Electrical Characteristics - 54	TI datasheet, p. 6 — 5.6 Electrical Characteristics - 54

02 — Alternatives

Closest matches to SN54HC14

74HC14BQ 2.9× lower input capacitance, 1.4× lower operating temperature, 1.3× lower propagation delay

NC7WZ16 10.0× lower propagation delay, 4.0× lower input capacitance, 2.0× lower quiescent current

NL17SZ08 8.7× lower propagation delay, 4.0× lower input capacitance, 2.0× higher output current

74HC164BQ 4.0× higher quiescent current, 2.9× lower input capacitance, 1.4× lower operating temperature

74LVC245A 20.0× lower quiescent current, 8.5× lower propagation delay, 2.5× lower input capacitance

74LVC2G14GM 20.0× lower quiescent current, 9.8× lower propagation delay, 2.9× lower input capacitance

MC74HC165A 3.4× higher propagation delay, 1.2× lower supply voltage range, similar input capacitance

NC7WZ17 6.6× lower propagation delay, 4.0× lower input capacitance, 2.0× higher output current

03 — FAQ

Frequently asked questions

What is the input capacitance of the SN54HC14 when the voltage is between 2 V and 6 V?

The input capacitance is 10 pF.

What is the maximum operating temperature for the SN54HC14?

The maximum operating temperature is 125 °C.

What is the absolute maximum output current (io) when VO = 0 to VCC?

The absolute maximum output current is 25 mA.

What is the output voltage high (VOH) when VCC is 2 V?

The output voltage high is 1.9 V.

What is the output voltage low (vol) for the SN54HC14 when the supply voltage is 2 V?

The output voltage low is 100 mV at 2 V.

What is the propagation delay (tpd) of the SN54HC14 at 2 V?

The propagation delay (tpd) is 125 ns at 2 V.

What is the quiescent current at 6 V?

The quiescent current is 2 µA at 6 V.

What is the recommended supply voltage range for the SN54HC14?

The recommended supply voltage range is 5 V at Vcc.