SN74AC08PW AND Gate IC Equivalent & Substitute Parts

Part Overview

The SN74AC08PW is a 4-channel 2-input AND gate logic IC manufactured by Texas Instruments in a 14-TSSOP surface mount package. This part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The device operates across a 2V to 6V supply voltage range with 7.5ns maximum propagation delay at 5V with 50pF load, suitable for general-purpose digital logic applications requiring AND gate functionality.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
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 @ V, Max CL	7.5ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74AC08PW is determined by strict equivalence across the following critical parameters:

Logic Type: AND Gate (4 channels, 2 inputs per channel)
Voltage Supply Range: 2V ~ 6V
Output Current Capability: 24mA high and low
Input Logic Levels: Low 0.9V ~ 1.65V, High 2.1V ~ 3.85V
Propagation Delay: 7.5ns @ 5V, 50pF
Operating Temperature: -40°C ~ 85°C
Package: 14-TSSOP surface mount
Compliance: ROHS3, MSL Level 1

All substitute parts listed maintain these electrical and mechanical specifications, ensuring functional and physical interchangeability. Packaging format (Tube vs. Tape & Reel) and product status variations do not affect electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Packaging	Quiescent Current (Max)	Propagation Delay	Inventory
SN74AC08PW	Texas Instruments	Discontinued	Tube	2 µA	7.5ns @ 5V, 50pF	1143 Pcs
SN74AC08PWR	Texas Instruments	Active	Tape & Reel (TR)	2 µA	7.5ns @ 5V, 50pF	81645 Pcs
74AC08MTCX	onsemi	Active	Tape & Reel (TR)	2 µA	7.5ns @ 5V, 50pF	4223 Pcs
MC74AC08DTR2G	onsemi	Active	Tape & Reel (TR)	4 µA	7.5ns @ 5V, 50pF	2469 Pcs
74AC08MTC	onsemi	Obsolete	Tube	2 µA	7.5ns @ 5V, 50pF	1510 Pcs

Engineering Selection Recommendations

For new designs and active production, SN74AC08PWR is the primary substitute, offering identical electrical specifications to the discontinued SN74AC08PW with the advantage of active product status and significantly higher inventory availability (81645 units). Both are Texas Instruments parts maintaining full specification equivalence.

For alternative sourcing, 74AC08MTCX from onsemi provides active product status with equivalent electrical performance and adequate inventory (4223 units) in Tape & Reel packaging.

MC74AC08DTR2G from onsemi is functionally equivalent with a maximum quiescent current specification of 4 µA (versus 2 µA for other variants), remaining within acceptable operating parameters. This part maintains active status with 2469 units available.

74AC08MTC from onsemi is electrically equivalent but carries obsolete product status, limiting its suitability for new applications despite adequate current inventory.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical 14-TSSOP package dimensions, ensuring direct physical and electrical interchangeability.

Frequently Asked Questions (FAQ)

Q: Can SN74AC08PWR directly replace SN74AC08PW?

A: Yes. Both parts are Texas Instruments 74AC08 AND gate ICs with identical electrical specifications, operating parameters, and 14-TSSOP package dimensions. The primary difference is packaging format (Tape & Reel vs. Tube) and product status (Active vs. Discontinued).

Q: What is the difference between the onsemi 74AC08MTCX and MC74AC08DTR2G?

A: Both are onsemi 74AC08 equivalents with identical logic functionality and propagation delay. MC74AC08DTR2G specifies a maximum quiescent current of 4 µA compared to 2 µA for 74AC08MTCX. Both remain within the 74AC08 specification envelope and are electrically interchangeable.

Q: Are Tube and Tape & Reel packaging formats interchangeable?

A: Packaging format does not affect electrical performance or physical compatibility in the 14-TSSOP package. Selection between Tube and Tape & Reel depends on assembly process requirements and handling procedures, not circuit functionality.

Q: Why is 74AC08MTC listed if it is obsolete?

A: 74AC08MTC maintains full electrical equivalence to the SN74AC08PW and remains in inventory. Obsolete status indicates discontinued manufacturing; however, existing stock may be available for applications where supply chain flexibility is required.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL Level 1 rating, REACH unaffected status, and identical ECCN and HTSUS classifications, ensuring compliance equivalence across all variants.

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