SN74AC11D Equivalent & Substitute Parts

Part Overview

The SN74AC11D is a 3-channel AND gate logic IC in 14-SOIC surface mount packaging, manufactured by Texas Instruments. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The 74AC series provides standard AND gate functionality across a wide supply voltage range of 2V to 6V, suitable for digital logic circuits requiring reliable gate operations with controlled propagation delays.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	3
Number of Inputs	3
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.9V ~ 1.65V
Input Logic Level - High	2.1V ~ 3.85V
Max Propagation Delay @ 5V, 50pF	8ns
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN74AC11D is determined by strict equivalence across the following critical parameters:

Logic Type: AND Gate with 3 channels and 3 inputs per channel
Package: 14-SOIC surface mount form factor
Electrical Performance: Supply voltage range 2V ~ 6V, output current 24mA, propagation delay 8ns @ 5V/50pF
Operating Temperature: -40°C ~ 85°C
Compliance: ROHS3 compliant, MSL Level 1

The substitute parts are grouped as follows:

Direct Manufacturer Equivalent (SN74AC11DR): Texas Instruments part in Cut Tape & Digi-Reel packaging. Identical electrical specifications and active product status.

Manufacturer Recommended Equivalent (MC74AC11DR2G): onsemi part in Tape & Reel packaging. Meets all electrical parameters with quiescent current specification of 4 µA (within acceptable tolerance for 74AC series logic).

Parametric Equivalent (MC74AC11DG): onsemi part in Tube packaging. Identical electrical specifications and active product status.

Parameter Comparison

Parameter	SN74AC11D (Main)	SN74AC11DR	MC74AC11DR2G	MC74AC11DG
Manufacturer	Texas Instruments	Texas Instruments	onsemi	onsemi
Logic Type	AND Gate	AND Gate	AND Gate	AND Gate
Number of Circuits	3	3	3	3
Number of Inputs	3	3	3	3
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Current - Quiescent (Max)	2 µA	2 µA	4 µA	4 µA
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Input Logic Level - Low	0.9V ~ 1.65V	0.9V ~ 1.65V	0.9V ~ 1.65V	0.9V ~ 1.65V
Input Logic Level - High	2.1V ~ 3.85V	2.1V ~ 3.85V	2.1V ~ 3.85V	2.1V ~ 3.85V
Max Propagation Delay @ 5V, 50pF	8ns	8ns	8ns	8ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging Format	Tube	Cut Tape & Digi-Reel	Tape & Reel	Tube
Product Status	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN74AC11DR is the primary substitute choice. It maintains Texas Instruments manufacturing continuity, carries active product status, and provides identical electrical specifications to the discontinued SN74AC11D. The Cut Tape & Digi-Reel packaging format accommodates both automated assembly and manual component handling.

MC74AC11DR2G serves as a manufacturer-recommended alternative from onsemi. All critical electrical parameters align with the original specification. The quiescent current specification of 4 µA remains within acceptable operational margins for 74AC series logic devices. Tape & Reel packaging is optimized for high-volume production environments.

MC74AC11DG provides parametric equivalence with onsemi manufacturing. Tube packaging matches the original SN74AC11D format, supporting applications requiring manual component placement or lower-volume assembly processes.

All three substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can SN74AC11DR be used as a direct replacement for SN74AC11D?

A: Yes. SN74AC11DR is electrically and functionally identical to SN74AC11D. Both are Texas Instruments 74AC series AND gate ICs with matching pin configurations, electrical specifications, and 14-SOIC packaging. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tube) and active product status.

Q: What is the difference between the onsemi substitutes MC74AC11DR2G and MC74AC11DG?

A: Both onsemi parts are parametrically equivalent to the original SN74AC11D. The difference is packaging format: MC74AC11DR2G uses Tape & Reel format for automated assembly, while MC74AC11DG uses Tube format for manual placement. Electrical specifications are identical.

Q: Does the quiescent current difference (2 µA vs 4 µA) affect circuit performance?

A: No. The quiescent current specification of 4 µA in the onsemi parts remains within standard 74AC series operating parameters. This difference does not impact logic functionality, propagation delay, or output drive capability.

Q: Are all substitute parts pin-compatible with the original SN74AC11D?

A: Yes. All substitute parts use the same 14-SOIC package with identical pin assignments. Direct PCB replacement is possible without circuit modification.

Q: Do all parts meet the same compliance requirements?

A: Yes. SN74AC11D, SN74AC11DR, MC74AC11DR2G, and MC74AC11DG are all ROHS3 compliant with MSL Level 1 rating. Compliance certifications are equivalent across all parts.

Q: Which substitute should be selected for new production designs?

A: SN74AC11DR is recommended for design continuity with Texas Instruments sourcing. MC74AC11DR2G is recommended for high-volume production requiring Tape & Reel packaging. MC74AC11DG is recommended when Tube packaging is required for assembly processes.

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