SN74AC14DRG4 Equivalent & Substitute Parts

Part Overview

The SN74AC14DRG4 is a 6-channel inverter IC with Schmitt trigger inputs manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. The 74AC14 logic family provides reliable signal inversion with hysteresis characteristics suitable for noise-tolerant digital applications across industrial and commercial temperature ranges.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	6
Features	Schmitt Trigger
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.5V ~ 1.1V
Input Logic Level - High	2.2V ~ 3.9V
Max Propagation Delay @ 5V, 50pF	10ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN74AC14DRG4 is determined by strict equivalence across the following critical parameters:

Logic Type: Inverter with 6 channels
Schmitt Trigger feature presence
Supply voltage range: 2V ~ 6V
Output current capability: 24mA minimum
Propagation delay: 10ns maximum at 5V, 50pF load
Package: 14-SOIC form factor
Operating temperature range: -40°C ~ 85°C
RoHS3 compliance and MSL Level 1

Substitute parts are grouped by manufacturer and packaging configuration. All listed substitutes maintain identical electrical specifications within the allowed parameter tolerances, with the exception of quiescent current in specific onsemi variants, which remains within acceptable operational limits for this logic family.

Parameter Comparison

Part Number	Manufacturer	Packaging	Product Status	Quiescent Current (Max)	Voltage - Supply	Output Current (High/Low)	Propagation Delay @ 5V, 50pF	Operating Temperature	RoHS Status
SN74AC14DRG4	Texas Instruments	14-SOIC	Discontinued	2 µA	2V ~ 6V	24mA, 24mA	10ns	-40°C ~ 85°C	ROHS3
SN74AC14DR	Texas Instruments	Cut Tape (CT) & Digi-Reel®	Active	2 µA	2V ~ 6V	24mA, 24mA	10ns	-40°C ~ 85°C	ROHS3
74AC14SC	onsemi	Tube	Active	2 µA	2V ~ 6V	24mA, 24mA	10ns	-40°C ~ 85°C	ROHS3
MC74AC14DG	onsemi	Tube	Active	4 µA	2V ~ 6V	24mA, 24mA	10ns	-40°C ~ 85°C	ROHS3
74AC14SCX	onsemi	Tape & Reel (TR)	Active	2 µA	2V ~ 6V	24mA, 24mA	10ns	-40°C ~ 85°C	ROHS3
MC74AC14DR2G	onsemi	Tape & Reel (TR)	Active	4 µA	2V ~ 6V	24mA, 24mA	10ns	-40°C ~ 85°C	ROHS3

Engineering Selection Recommendations

All listed substitute parts are active products with current manufacturing status, ensuring long-term availability and supply chain stability. The SN74AC14DR from Texas Instruments is the direct functional equivalent with identical quiescent current specification and represents the primary replacement for the discontinued SN74AC14DRG4.

onsemi variants (74AC14SC, MC74AC14DG, 74AC14SCX, MC74AC14DR2G) provide full electrical equivalence with ROHS3 compliance and MSL Level 1 certification. The MC74AC14DG and MC74AC14DR2G variants specify 4 µA maximum quiescent current, which remains within acceptable operational parameters for the 74AC logic family and does not impact functional compatibility.

Packaging selection should be based on procurement and assembly requirements: Cut Tape and Digi-Reel options support automated pick-and-place operations, while Tube and Tape & Reel configurations accommodate different inventory and handling workflows.

Frequently Asked Questions (FAQ)

Q: Can I use onsemi 74AC14 variants as direct replacements for the Texas Instruments SN74AC14DRG4?

A: Yes. All onsemi variants listed maintain identical electrical specifications for logic type, channel count, Schmitt trigger functionality, supply voltage range, output current, propagation delay, and operating temperature. All are ROHS3 compliant with MSL Level 1 rating.

Q: What is the difference between the 2 µA and 4 µA quiescent current specifications?

A: Both specifications fall within acceptable operational limits for the 74AC logic family. The 4 µA variants (MC74AC14DG and MC74AC14DR2G) represent a higher maximum specification but do not affect functional performance or compatibility in standard applications.

Q: Does packaging type affect electrical performance?

A: No. Packaging type (Cut Tape, Tube, Tape & Reel) affects only procurement, handling, and assembly processes. All variants in the same package type (14-SOIC) deliver identical electrical performance.

Q: Are all substitute parts suitable for the same temperature range?

A: Yes. All listed substitutes operate across the full -40°C ~ 85°C industrial temperature range, matching the original SN74AC14DRG4 specification.

Q: Which substitute offers the best inventory availability?

A: MC74AC14DR2G from onsemi shows the highest current stock level at 20,600 units. SN74AC14DR from Texas Instruments maintains 15,688 units in active inventory.

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