SN74LVC32APWG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC32APWG4 is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in 14-TSSOP surface mount packaging. This part is discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this OR gate logic function.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	1.65V ~ 3.6V
Current Output High/Low	24mA / 24mA
Max Propagation Delay @ 3.3V, 50pF	3.6ns
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package	14-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC32APWG4 is determined by the following critical parameters:

Logic function: 4-channel 2-input OR gate
Output drive capability: 24mA high and low
Package type: 14-TSSOP surface mount
Supply voltage range: Minimum 1.65V support
Operating temperature range: Minimum -40°C to 125°C
RoHS compliance: ROHS3 Compliant

Substitute parts must maintain compatibility across these parameters. Variations in propagation delay, quiescent current, and input logic levels are acceptable within the functional requirements of OR gate logic operation, provided the part meets the core electrical and mechanical specifications.

Parameter Comparison

Part Number	Manufacturer	Status	Voltage Supply	Quiescent Current (Max)	Output High/Low	Propagation Delay @ 3.3V, 50pF	Operating Temp	Package
SN74LVC32APWG4	Texas Instruments	Discontinued	1.65V ~ 3.6V	1 µA	24mA / 24mA	3.6ns	-40°C ~ 125°C	14-TSSOP
SN74LVC32APW	Texas Instruments	Active	1.65V ~ 3.6V	1 µA	24mA / 24mA	3.6ns	-40°C ~ 125°C	14-TSSOP
74LVC32APW,118	Nexperia USA Inc.	Active	1.2V ~ 3.6V	40 µA	24mA / 24mA	5ns	-40°C ~ 125°C	14-TSSOP
74LVC32AT14-13	Diodes Incorporated	Active	1.65V ~ 3.6V	40 µA	24mA / 24mA	4.1ns	-40°C ~ 125°C	14-TSSOP
74LCX32MTCX	onsemi	Active	2V ~ 3.6V	10 µA	24mA / 24mA	5.5ns	-40°C ~ 85°C	14-TSSOP
TC74LCX32FTELM	Toshiba Semiconductor and Storage	Active	1.65V ~ 3.6V	10 µA	24mA / 24mA	5.5ns	-40°C ~ 85°C	14-TSSOP
74LVC32ADB,118	Nexperia USA Inc.	Obsolete	1.2V ~ 3.6V	40 µA	24mA / 24mA	3.8ns	-40°C ~ 125°C	14-SSOP
MC74LCX32DTG	onsemi	Obsolete	2V ~ 3.6V	10 µA	24mA / 24mA	5.5ns	-40°C ~ 85°C	14-TSSOP

Engineering Selection Recommendations

Primary Recommendation: SN74LVC32APW

The SN74LVC32APW from Texas Instruments is the direct functional equivalent to the SN74LVC32APWG4. It maintains identical electrical specifications including supply voltage range (1.65V ~ 3.6V), quiescent current (1 µA), output drive (24mA), and propagation delay (3.6ns). The part is currently active in production and available in high inventory quantities. ROHS3 compliance and RoHS status match the original specification.

Secondary Recommendations: 74LVC32APW,118 and 74LVC32AT14-13

Both parts are active and support the full -40°C to 125°C operating temperature range required by the original specification. The 74LVC32APW,118 from Nexperia and 74LVC32AT14-13 from Diodes Incorporated maintain 14-TSSOP packaging and 24mA output drive capability. These parts accept extended supply voltage ranges (1.2V minimum) and are suitable for applications where the original 1.65V minimum is not a constraint.

Alternative Consideration: TC74LCX32FTELM

The TC74LCX32FTELM from Toshiba provides functional OR gate logic in 14-TSSOP packaging with active product status. This part supports the 1.65V ~ 3.6V supply range and maintains 24mA output drive. The operating temperature range is limited to -40°C ~ 85°C, which restricts use in applications requiring the full 125°C upper limit of the original part.

Not Recommended: 74LCX32MTCX and MC74LCX32DTG

The 74LCX32MTCX and MC74LCX32DTG from onsemi have minimum supply voltage of 2V, which does not meet the 1.65V requirement of the original specification. Additionally, MC74LCX32DTG is obsolete. These parts are suitable only for applications with 2V minimum supply voltage requirements.

Not Recommended: 74LVC32ADB,118

The 74LVC32ADB,118 uses 14-SSOP packaging (5.30mm width) rather than 14-TSSOP (4.40mm width), creating a mechanical incompatibility with the original footprint. This part is also obsolete.

Frequently Asked Questions (FAQ)

Q: Can I use 74LVC32APW,118 as a direct replacement for SN74LVC32APWG4?

A: Yes, 74LVC32APW,118 is functionally compatible. Both parts provide 4-channel 2-input OR gate logic with 24mA output drive in 14-TSSOP packaging. The 74LVC32APW,118 accepts a wider supply voltage range (1.2V minimum vs. 1.65V minimum) and operates across the full -40°C to 125°C temperature range. Propagation delay is slightly longer (5ns vs. 3.6ns), which is acceptable for most OR gate applications.

Q: What is the difference between 14-TSSOP and 14-SSOP packaging?

A: 14-TSSOP has a 4.40mm body width, while 14-SSOP has a 5.30mm body width. These are mechanically incompatible and require different PCB footprints. The SN74LVC32APWG4 uses 14-TSSOP packaging. Parts specified as 14-SSOP cannot be used as direct replacements without PCB redesign.

Q: Why does 74LCX32MTCX have a 2V minimum supply voltage instead of 1.65V?

A: The 74LCX32MTCX is part of the 74LCX logic family, which has different electrical specifications than the 74LVC family. While both provide OR gate logic, the 74LCX family operates at higher minimum voltages. Use 74LCX parts only in applications where 2V minimum supply voltage is acceptable.

Q: Is the SN74LVC32APW available in the same packaging as the original part?

A: Yes. The SN74LVC32APW is supplied in 14-TSSOP packaging with Tube packaging option, matching the mechanical specifications of the SN74LVC32APWG4. It is the recommended direct replacement.

Q: Can I use a part with lower quiescent current to reduce power consumption?

A: Quiescent current differences (1 µA vs. 10 µA vs. 40 µA) represent standby power consumption and do not affect functional OR gate operation. Parts with lower quiescent current may be selected for power-sensitive applications, provided all other electrical and mechanical parameters remain compatible.

Q: What does "Discontinued at DiGi Electronics" mean for the SN74LVC32APWG4?

A: This indicates the part is no longer actively stocked or sold through DiGi Electronics distribution. The part may still be available through other channels or in existing inventory, but new orders should transition to active alternatives such as SN74LVC32APW or 74LVC32APW,118.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message