SN74LVC08ADBRE4 Equivalent & Substitute Parts

Part Overview

The SN74LVC08ADBRE4 is a 4-channel 2-input AND gate logic IC manufactured by Texas Instruments in 14-SSOP surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and production requirements. The device operates across a 1.65V to 3.6V supply voltage range with low quiescent current and fast propagation delay characteristics suitable for general-purpose logic applications.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	1.65V ~ 3.6V
Current - Quiescent (Max)	1 µA
Current - Output High, Low	24mA, 24mA
Max Propagation Delay @ 3.3V, 50pF	3.9ns
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-SSOP (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SN74LVC08ADBRE4 is determined by the following critical parameters:

Logic function: 4-channel 2-input AND gate
Supply voltage compatibility: 1.65V ~ 3.6V minimum range
Output drive capability: 24mA minimum for both high and low states
Propagation delay: 3.9ns or faster at 3.3V with 50pF load
Operating temperature range: -40°C ~ 125°C
Surface mount packaging with equivalent pin count and footprint compatibility

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications and packaging) and manufacturer-recommended alternatives (functionally equivalent with minor parameter variations or package differences).

Parameter Comparison

Parameter	SN74LVC08ADBRE4 (Main)	SN74LVC08ADBR	74LCX08MTCX	74LVC08ADB,112	74LVC08APW,118
Manufacturer	Texas Instruments	Texas Instruments	onsemi	Nexperia USA Inc.	Nexperia USA Inc.
Series	74LVC	74LVC	74LCX	74LVC	74LVC
Logic Type	AND Gate	AND Gate	AND Gate	AND Gate	AND Gate
Number of Circuits	4	4	4	4	4
Number of Inputs	2	2	2	2	2
Voltage - Supply	1.65V ~ 3.6V	1.65V ~ 3.6V	2V ~ 3.6V	1.2V ~ 3.6V	1.2V ~ 3.6V
Current - Quiescent (Max)	1 µA	1 µA	10 µA	40 µA	40 µA
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Input Logic Level - Low	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V	0.12V ~ 0.8V	0.12V ~ 0.8V
Input Logic Level - High	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V	1.08V ~ 2V	1.08V ~ 2V
Max Propagation Delay @ 3.3V, 50pF	3.9ns	3.9ns	5.5ns	4.1ns	4.1ns
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-SSOP (0.209", 5.30mm)	14-SSOP (0.209", 5.30mm)	14-TSSOP (0.173", 4.40mm)	14-SSOP (0.209", 5.30mm)	14-TSSOP (0.173", 4.40mm)
Product Status	Discontinued at DiGi Electronics	Active	Active	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SN74LVC08ADBR is the primary parametric equivalent. This Texas Instruments part maintains identical electrical specifications and 14-SSOP packaging as the main part. The only difference is packaging format (Tape & Reel versus bulk), with 5300 pieces currently in stock and active product status. This part is the direct replacement for the discontinued SN74LVC08ADBRE4.

74LVC08APW,118 is a functionally equivalent alternative from Nexperia USA Inc. with active product status and 17712 pieces in stock. This part operates across an extended lower supply voltage range (1.2V minimum) and features identical output drive capability. The package differs as 14-TSSOP (0.173" width) versus 14-SSOP (0.209" width), requiring PCB layout verification. Propagation delay is 4.1ns, within acceptable tolerance for most applications.

74LCX08MTCX from onsemi is a manufacturer-recommended alternative with 45555 pieces in stock and active status. This part operates at 2V minimum supply voltage (not compatible with 1.65V designs) and exhibits 5.5ns propagation delay. The 14-TSSOP package requires PCB footprint verification. Operating temperature range is limited to -40°C ~ 85°C, unsuitable for applications requiring 125°C operation.

74LVC08ADB,112 from Nexperia USA Inc. is obsolete and not recommended for new designs despite technical compatibility. This part exhibits higher quiescent current (40 µA) and is available only in limited quantity (738 pieces).

Frequently Asked Questions (FAQ)

Q: Can SN74LVC08ADBR directly replace SN74LVC08ADBRE4 without PCB modification?

A: Yes. SN74LVC08ADBR is a parametric equivalent with identical electrical specifications and 14-SSOP packaging. The only difference is packaging format (Tape & Reel). No PCB layout changes are required.

Q: What are the key differences between 14-SSOP and 14-TSSOP packages?

A: 14-SSOP measures 0.209" (5.30mm) width, while 14-TSSOP measures 0.173" (4.40mm) width. Both use the same pin pitch and pin count. PCB footprint compatibility must be verified before substitution. Consult package datasheets for exact land pattern dimensions.

Q: Is 74LCX08MTCX suitable for 1.65V supply voltage applications?

A: No. The 74LCX08MTCX minimum supply voltage is 2V, making it incompatible with designs requiring 1.65V operation. Use SN74LVC08ADBR or 74LVC08APW,118 for 1.65V applications.

Q: Why is propagation delay different between substitute parts?

A: Propagation delay varies by manufacturer process technology and series (74LVC versus 74LCX). SN74LVC08ADBR matches the main part at 3.9ns. 74LVC08APW,118 and 74LVC08ADB,112 are 4.1ns. 74LCX08MTCX is 5.5ns. All values are measured at 3.3V with 50pF load. Verify timing requirements for your specific application.

Q: Can I use 74LVC08ADB,112 in new production designs?

A: No. This part is obsolete and available in limited quantity (738 pieces). Use SN74LVC08ADBR or 74LVC08APW,118 for new designs.

Q: What is the impact of higher quiescent current in substitute parts?

A: 74LVC08APW,118 and 74LVC08ADB,112 exhibit 40 µA quiescent current versus 1 µA in the main part. For battery-powered or low-power applications, this 40x increase may be significant. Evaluate power budget requirements before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the main part specification.

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