SN74HC08DE4 Equivalent & Substitute Parts

Part Overview

The SN74HC08DE4 is a 4-channel AND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is currently discontinued at DiGi Electronics. The device operates across a 2V to 6V supply voltage range and is suitable for general-purpose logic applications requiring AND gate functionality. Due to its discontinued status, equivalent substitute parts from active manufacturers are necessary for new designs and ongoing production requirements.

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	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	17ns
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 of the SN74HC08DE4 is determined by the following critical parameters:

Logic Type: AND Gate with 4 channels and 2 inputs per channel
Supply Voltage Range: 2V ~ 6V minimum compatibility
Package Type: 14-SOIC surface mount form factor
Output Drive Capability: 5.2mA output current (high and low)
Input Logic Levels: 0.5V ~ 1.8V (low), 1.5V ~ 4.2V (high)
Propagation Delay: Maximum 17ns at 6V with 50pF load
Operating Temperature: Minimum -40°C ~ 85°C range
Compliance: ROHS3 and MSL Level 1

Substitute parts must maintain functional equivalence across these parameters. Parts with superior specifications (lower quiescent current, faster propagation delay, extended temperature range) are direct substitutes. Parts with identical or tighter specifications are fully compatible.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Supply	Current - Quiescent (Max)	Propagation Delay @ 6V, 50pF	Operating Temperature	Package	Inventory
SN74HC08DE4	Texas Instruments	Discontinued at DiGi Electronics	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-SOIC	1169 Pcs
SN74HC08DR	Texas Instruments	Active	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-SOIC	10100 Pcs
MC74HC08ADR2G	onsemi	Active	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-SOIC	20036 Pcs
MM74HC08M	Fairchild Semiconductor	Active	2V ~ 6V	2 µA	20ns	-40°C ~ 85°C	14-SOIC	2900 Pcs
SN74HC08D	Texas Instruments	Discontinued at DiGi Electronics	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-SOIC	2100 Pcs
74HC08D,653	Nexperia USA Inc.	Active	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-SOIC	14166 Pcs
74HC08D-Q100,118	Nexperia USA Inc.	Active	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-SOIC	14867 Pcs
74HC08S14-13	Diodes Incorporated	Active	2V ~ 6V	20 µA	15ns	-40°C ~ 125°C	14-SOIC	3478 Pcs
MC74HC08ADG	onsemi	Active	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-SOIC	4014 Pcs
MM74HC08MX	Fairchild Semiconductor	Active	2V ~ 6V	2 µA	20ns	-40°C ~ 85°C	14-SOIC	22689 Pcs

Engineering Selection Recommendations

Primary Recommendation: SN74HC08DR

The SN74HC08DR from Texas Instruments is the direct functional equivalent to the SN74HC08DE4. It maintains identical electrical specifications and operating parameters while offering active product status with significantly higher inventory availability (10100 units). Both parts share the same base product number 74HC08 and are ROHS3 compliant with MSL Level 1 rating. The SN74HC08DR is packaged in Cut Tape and Digi-Reel format, suitable for production environments.

Secondary Recommendation: MC74HC08ADR2G or MC74HC08ADG

The onsemi MC74HC08ADR2G and MC74HC08ADG variants provide superior electrical performance with lower quiescent current (1 µA versus 2 µA) and faster propagation delay (13ns versus 17ns). These parts extend the operating temperature range to -55°C ~ 125°C, offering enhanced reliability for demanding applications. Both variants are actively manufactured with substantial inventory levels. The MC74HC08ADR2G is supplied in Cut Tape and Digi-Reel format, while MC74HC08ADG is supplied in Tube packaging.

Alternative Recommendation: 74HC08D,653 or 74HC08D-Q100,118

The Nexperia USA Inc. variants 74HC08D,653 and 74HC08D-Q100,118 deliver improved propagation delay performance (15ns) and extended temperature range (-40°C ~ 125°C). The 74HC08D-Q100,118 variant includes AEC-Q100 automotive qualification, suitable for automotive-grade applications. Both parts maintain ROHS3 compliance and MSL Level 1 rating with high inventory availability.

Note on 74HC08S14-13:

The Diodes Incorporated 74HC08S14-13 is functionally compatible but exhibits elevated quiescent current (20 µA) compared to the original specification (2 µA). This part is suitable only for applications where power consumption is not a critical constraint.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74HC08DE4 with SN74HC08DR?

A: Yes. Both parts are Texas Instruments 74HC08 AND gate ICs with identical electrical specifications, supply voltage range (2V ~ 6V), propagation delay (17ns @ 6V, 50pF), and operating temperature range (-40°C ~ 85°C). The primary difference is packaging format and product status. SN74HC08DR is actively manufactured.

Q: What is the difference between the 14-SOIC and 14-SO package designations?

A: Both designations refer to the same 14-pin small-outline integrated circuit package with 0.154" (3.90mm) width. The packages are mechanically and electrically compatible. Variations in designation reflect different manufacturer nomenclature standards.

Q: Are the onsemi MC74HC08ADR2G and MC74HC08ADG interchangeable?

A: Yes, electrically and functionally. Both are onsemi 74HC08 AND gate ICs with identical specifications. The primary difference is packaging: MC74HC08ADR2G is supplied in Cut Tape and Digi-Reel format, while MC74HC08ADG is supplied in Tube packaging. Select based on your assembly process requirements.

Q: Why do some substitutes have lower quiescent current specifications?

A: Lower quiescent current (1 µA versus 2 µA) represents improved power efficiency in the onsemi variants. This is a superior specification that does not affect functional compatibility. Applications sensitive to standby power consumption benefit from these variants.

Q: Can I use 74HC08S14-13 in a battery-powered application?

A: The 74HC08S14-13 exhibits 20 µA quiescent current, which is 10 times higher than the original SN74HC08DE4 specification (2 µA). For battery-powered or low-power applications, select alternatives with lower quiescent current such as MC74HC08ADR2G, MC74HC08ADG, or the original SN74HC08DR.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, consistent with the original SN74HC08DE4 specification.

Q: Which substitute offers the best propagation delay performance?

A: The onsemi variants MC74HC08ADR2G and MC74HC08ADG deliver the fastest propagation delay at 13ns @ 6V with 50pF load, compared to 17ns for the original part. The Nexperia variants 74HC08D,653 and 74HC08D-Q100,118 offer intermediate performance at 15ns.

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