SN74ACT08DE4 Equivalent & Substitute Parts

Part Overview

The SN74ACT08DE4 is a 4-channel AND gate logic integrated circuit manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74ACT08 logic family provides standard AND gate functionality suitable for digital logic applications requiring 4.5V to 5.5V supply operation.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	9ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SN74ACT08DE4 is determined by strict equivalence across the following parameters:

Logic Type: AND Gate (4-channel, 2-input configuration)
Voltage Supply Range: 4.5V ~ 5.5V
Output Current Capability: 24mA high and low
Input Logic Levels: 0.8V low, 2V high
Propagation Delay: 9ns @ 5V, 50pF
Package: 14-SOIC surface mount
Operating Temperature Range: -40°C ~ 85°C
Compliance: ROHS3, MSL 1

Substitute parts are grouped by manufacturer and packaging type. All listed substitutes maintain identical functional and electrical specifications. Differences in quiescent current (2 µA vs 4 µA) represent parametric variation within the 74ACT08 logic family and do not affect functional compatibility.

Parameter Comparison

Part Number	Manufacturer	Packaging	Product Status	Voltage Supply	Quiescent Current (Max)	Output Current	Propagation Delay	Operating Temp	Inventory
SN74ACT08DE4	Texas Instruments	14-SOIC	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	769 Pcs
SN74ACT08DR	Texas Instruments	Cut Tape (CT) & Digi-Reel®	Active	4.5V ~ 5.5V	2 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	2179 Pcs
SN74ACT08D	Texas Instruments	Tube	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	3400 Pcs
74ACT08SCX	onsemi	Cut Tape (CT) & Digi-Reel®	Active	4.5V ~ 5.5V	4 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	15691 Pcs
MC74ACT08DR2G	onsemi	Tape & Reel (TR)	Active	4.5V ~ 5.5V	4 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	40300 Pcs
74ACT08SC	onsemi	Tube	Active	4.5V ~ 5.5V	4 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	1505 Pcs
MC74ACT08DG	onsemi	Tube	Active	4.5V ~ 5.5V	4 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	3620 Pcs

Engineering Selection Recommendations

Direct Replacement (Texas Instruments): SN74ACT08DR is the primary active substitute from Texas Instruments, maintaining identical electrical specifications and quiescent current performance. This part is currently in active production status with 2179 units in stock.

Alternative Manufacturer (onsemi): The onsemi 74ACT08 variants (74ACT08SCX, MC74ACT08DR2G, 74ACT08SC, MC74ACT08DG) provide full functional equivalence with identical propagation delay, output current, and operating temperature range. These parts operate at 4 µA quiescent current, representing a parametric variation within acceptable limits for the 74ACT08 logic family. All onsemi variants maintain ROHS3 compliance and MSL 1 rating.

Packaging Considerations: Selection between packaging types (Cut Tape & Digi-Reel, Tape & Reel, or Tube) depends on procurement volume and assembly requirements. MC74ACT08DR2G offers the highest inventory availability (40300 units) in Tape & Reel format.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT08DR be used as a direct replacement for SN74ACT08DE4?

A: Yes. SN74ACT08DR is functionally and electrically equivalent. Both parts share identical logic type, supply voltage range, output current capability, propagation delay, and operating temperature specifications. The primary difference is packaging format and product status (active vs. discontinued).

Q: What is the difference between Texas Instruments and onsemi 74ACT08 parts?

A: Both manufacturers produce 74ACT08 logic gates meeting identical functional specifications. The quiescent current specification differs slightly (2 µA for Texas Instruments vs. 4 µA for onsemi), but both values fall within acceptable parametric variation for the 74ACT08 family. All electrical performance parameters including propagation delay, output current, and logic levels are identical.

Q: Does packaging type affect electrical performance?

A: No. Packaging type (Cut Tape & Digi-Reel, Tape & Reel, or Tube) affects only procurement and assembly handling. All 14-SOIC package variants deliver identical electrical performance and are mechanically compatible with the same PCB footprint.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 rating, matching the original SN74ACT08DE4 specifications.

Q: Which substitute offers the best availability?

A: MC74ACT08DR2G from onsemi provides the highest inventory availability at 40300 units in Tape & Reel packaging, suitable for high-volume production requirements.

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