SN74LVC32APWRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC32APWRG4 is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments, housed in a 14-TSSOP surface mount package. This part operates across a supply voltage range of 1.65V to 3.6V with low quiescent current of 1 µA maximum and propagation delay of 3.6ns at 3.3V with 50pF load. The SN74LVC32APWRG4 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Logic Type	OR 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	3.6ns
Operating Temperature	-40°C ~ 125°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SN74LVC32APWRG4 is determined by the following critical parameters:

Functional Equivalence: All substitute parts must be 4-channel 2-input OR gates with identical logic functionality.

Electrical Compatibility: Supply voltage range, quiescent current, output current capability, input logic levels, and propagation delay determine functional interchangeability. Parts with supply voltage ranges that encompass or exceed 1.65V to 3.6V are compatible. Propagation delay must not exceed the original specification to maintain timing performance.

Package Compatibility: The 14-TSSOP package is the primary mechanical requirement. Substitutes in alternative packages (14-SSOP) require PCB layout verification.

Compliance & Status: RoHS3 compliance and MSL rating ensure regulatory and manufacturing process compatibility.

Substitute parts are grouped into two categories:

Parametric Equivalents (Texas Instruments 74LVC Series): SN74LVC32APWR, SN74LVC32APWRG3, and SN74LVC32APWT maintain identical electrical specifications and 14-TSSOP packaging. These differ only in packaging format (Cut Tape, Tape & Reel) and product status.

Manufacturer Recommended Alternatives: Parts from onsemi (74LCX32MTCX, MC74LCX32DTG), Nexperia (74LVC32ADB,118, 74LVC32APW,112, 74LVC32APW,118), Diodes Incorporated (74LVC32AT14-13), and Toshiba (TC74LCX32FTELM) provide functional equivalence with variations in electrical parameters and operating temperature ranges.

Parameter Comparison

Part Number	Manufacturer	Voltage - Supply	Current - Quiescent (Max)	Max Propagation Delay @ 3.3V, 50pF	Operating Temperature	Package	Product Status	Packaging Format
SN74LVC32APWRG4	Texas Instruments	1.65V ~ 3.6V	1 µA	3.6ns	-40°C ~ 125°C	14-TSSOP	Discontinued	Digi-Reel
SN74LVC32APWR	Texas Instruments	1.65V ~ 3.6V	1 µA	3.6ns	-40°C ~ 125°C	14-TSSOP	Active	Cut Tape & Digi-Reel
SN74LVC32APWRG3	Texas Instruments	1.65V ~ 3.6V	1 µA	3.6ns	-40°C ~ 125°C	14-TSSOP	Active	Tape & Reel
SN74LVC32APWT	Texas Instruments	1.65V ~ 3.6V	1 µA	3.6ns	-40°C ~ 125°C	14-TSSOP	Active	Tape & Reel
74LCX32MTCX	onsemi	2V ~ 3.6V	10 µA	5.5ns	-40°C ~ 85°C	14-TSSOP	Active	Cut Tape & Digi-Reel
74LVC32ADB,118	Nexperia USA Inc.	1.2V ~ 3.6V	40 µA	3.8ns	-40°C ~ 125°C	14-SSOP	Obsolete	Cut Tape & Digi-Reel
74LVC32APW,112	Nexperia USA Inc.	1.2V ~ 3.6V	40 µA	5ns	-40°C ~ 125°C	14-TSSOP	Obsolete	Tube
74LVC32APW,118	Nexperia USA Inc.	1.2V ~ 3.6V	40 µA	5ns	-40°C ~ 125°C	14-TSSOP	Active	Tape & Reel
74LVC32AT14-13	Diodes Incorporated	1.65V ~ 3.6V	40 µA	4.1ns	-40°C ~ 125°C	14-TSSOP	Active	Tape & Reel
MC74LCX32DTG	onsemi	2V ~ 3.6V	10 µA	5.5ns	-40°C ~ 85°C	14-TSSOP	Obsolete	Not specified
TC74LCX32FTELM	Toshiba Semiconductor and Storage	1.65V ~ 3.6V	10 µA	5.5ns	-40°C ~ 85°C	14-TSSOP	Active	Cut Tape

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): SN74LVC32APWR, SN74LVC32APWRG3, and SN74LVC32APWT are direct parametric equivalents manufactured by Texas Instruments. All three maintain identical electrical specifications and 14-TSSOP packaging. Selection among these three depends on packaging format availability: SN74LVC32APWR is available in Cut Tape and Digi-Reel formats; SN74LVC32APWRG3 and SN74LVC32APWT are available in Tape & Reel format. All three are ROHS3 compliant with MSL rating of 1.

Active Alternative from Nexperia: 74LVC32APW,118 is currently active and available in Tape & Reel format. This part maintains the 14-TSSOP package and -40°C to 125°C operating temperature range. However, it exhibits higher quiescent current (40 µA versus 1 µA) and longer propagation delay (5ns versus 3.6ns). This part is suitable for applications where the increased power consumption and timing margin are acceptable.

Active Alternative from Diodes Incorporated: 74LVC32AT14-13 is currently active and available in Tape & Reel format with 14-TSSOP packaging. It maintains the 1.65V to 3.6V supply voltage range and -40°C to 125°C operating temperature. Quiescent current is 40 µA and propagation delay is 4.1ns, representing a middle ground between the original specification and other alternatives.

Alternatives with Operating Temperature Limitation: 74LCX32MTCX (onsemi) and TC74LCX32FTELM (Toshiba) are active parts with 14-TSSOP packaging but limited to -40°C to 85°C operating temperature. These are suitable only for applications not requiring the full -40°C to 125°C range. Both exhibit 10 µA quiescent current and 5.5ns propagation delay.

Obsolete Parts: 74LVC32ADB,118 (Nexperia), 74LVC32APW,112 (Nexperia), and MC74LCX32DTG (onsemi) are obsolete and should be avoided for new designs. 74LVC32ADB,118 uses 14-SSOP packaging, which differs mechanically from the 14-TSSOP standard.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC32APWR be used as a direct replacement for SN74LVC32APWRG4?

A: Yes. SN74LVC32APWR is a direct parametric equivalent with identical electrical specifications, supply voltage range (1.65V to 3.6V), quiescent current (1 µA), propagation delay (3.6ns at 3.3V, 50pF), operating temperature range (-40°C to 125°C), and 14-TSSOP packaging. The only difference is packaging format (Cut Tape & Digi-Reel versus Digi-Reel). Both are ROHS3 compliant with MSL rating of 1.

Q: What is the difference between 74LVC32APW,118 and SN74LVC32APWR?

A: Both are 4-channel 2-input OR gates in 14-TSSOP packages with identical logic functionality. However, 74LVC32APW,118 (Nexperia) has higher quiescent current (40 µA versus 1 µA) and longer propagation delay (5ns versus 3.6ns). The supply voltage range is broader for 74LVC32APW,118 (1.2V to 3.6V versus 1.65V to 3.6V). 74LVC32APW,118 is currently active, while the original part is discontinued.

Q: Why do some substitutes have different operating temperature ranges?

A: Operating temperature range is determined by the manufacturer's design and qualification process. Parts like 74LCX32MTCX and TC74LCX32FTELM are qualified only to -40°C to 85°C, while Texas Instruments and Diodes Incorporated parts are qualified to -40°C to 125°C. Selection depends on the application's thermal requirements.

Q: Can 74LVC32ADB,118 be used as a substitute?

A: 74LVC32ADB,118 is functionally equivalent but uses 14-SSOP packaging instead of 14-TSSOP. The 14-SSOP package has a different pin pitch and body width (5.30mm versus 4.40mm), requiring PCB layout verification. Additionally, this part is obsolete and should not be selected for new designs.

Q: What does the packaging format suffix mean (e.g., "Cut Tape," "Tape & Reel," "Tube")?

A: Packaging format indicates the physical delivery method for component reels or quantities. Cut Tape (CT) provides individual strips cut from continuous tape. Tape & Reel (TR) provides components on continuous tape wound on reels for automated assembly. Tube packaging provides components in plastic tubes for manual handling. All three formats contain identical components; selection depends on assembly process requirements and order quantity.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are RoHS3 compliant except TC74LCX32FTELM, which is listed as RoHS Compliant without specific version designation. All parts have MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

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