SN74LVC32APWE4 Equivalent & Substitute Parts

Part Overview

The SN74LVC32APWE4 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, necessitating identification of functionally equivalent alternatives. The device operates across a 1.65V to 3.6V supply voltage range with low quiescent current and is suitable for general-purpose logic applications requiring OR gate functionality.

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
Mounting Type	Surface Mount
Package / Case	14-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Requirements:

Logic Type: OR Gate (4-channel, 2-input configuration)
Package Type: 14-TSSOP surface mount
Supply Voltage Range: Minimum 1.65V support
Output Current: 24mA minimum for both high and low states
Operating Temperature: -40°C minimum to 125°C maximum
RoHS Compliance: ROHS3 or equivalent

Secondary Compatibility Considerations:

Propagation delay tolerance (within application timing constraints)
Quiescent current specifications
Input logic level thresholds

Substitutes are grouped by manufacturer and product status to facilitate selection based on availability and lifecycle requirements.

Parameter Comparison

Part Number	Manufacturer	Status	Supply Voltage	Quiescent Current (Max)	Propagation Delay @ 3.3V	Operating Temp	Package
SN74LVC32APWE4	Texas Instruments	Discontinued	1.65V ~ 3.6V	1 µA	3.6ns	-40°C ~ 125°C	14-TSSOP
SN74LVC32APW	Texas Instruments	Active	1.65V ~ 3.6V	1 µA	3.6ns	-40°C ~ 125°C	14-TSSOP
74LVC32APW,118	Nexperia USA Inc.	Active	1.2V ~ 3.6V	40 µA	5ns	-40°C ~ 125°C	14-TSSOP
74LVC32AT14-13	Diodes Incorporated	Active	1.65V ~ 3.6V	40 µA	4.1ns	-40°C ~ 125°C	14-TSSOP
74LCX32MTCX	onsemi	Active	2V ~ 3.6V	10 µA	5.5ns	-40°C ~ 85°C	14-TSSOP
MC74LCX32DTG	onsemi	Obsolete	2V ~ 3.6V	10 µA	5.5ns	-40°C ~ 85°C	14-TSSOP
TC74LCX32FTELM	Toshiba Semiconductor and Storage	Active	1.65V ~ 3.6V	10 µA	5.5ns	-40°C ~ 85°C	14-TSSOP
74LVC32ADB,118	Nexperia USA Inc.	Obsolete	1.2V ~ 3.6V	40 µA	3.8ns	-40°C ~ 125°C	14-SSOP

Engineering Selection Recommendations

Preferred Primary Substitute: SN74LVC32APW (Texas Instruments, Active) provides direct electrical and mechanical equivalence to the SN74LVC32APWE4. Identical supply voltage range (1.65V ~ 3.6V), quiescent current (1 µA), propagation delay (3.6ns), and operating temperature range (-40°C ~ 125°C). ROHS3 compliant. Available in active product status with 3788 units in stock.

Secondary Substitutes (Active Status): 74LVC32APW,118 (Nexperia USA Inc.) and 74LVC32AT14-13 (Diodes Incorporated) maintain 14-TSSOP packaging and -40°C to 125°C operating range. Both support extended supply voltage to 1.2V and 1.65V respectively. Propagation delays of 5ns and 4.1ns remain within typical application tolerances. Both are currently active products.

Alternative Consideration (Temperature-Limited): TC74LCX32FTELM (Toshiba) and 74LCX32MTCX (onsemi) operate within 2V ~ 3.6V and 1.65V ~ 3.6V supply ranges respectively, with maximum operating temperature of 85°C. These are suitable only for applications not requiring the full 125°C upper temperature specification.

Avoid: 74LVC32ADB,118 uses 14-SSOP packaging (5.30mm width) rather than 14-TSSOP (4.40mm width), requiring PCB layout modification. MC74LCX32DTG is obsolete status.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC32APW directly replace SN74LVC32APWE4? A: Yes. SN74LVC32APW is the direct active equivalent with identical electrical specifications and 14-TSSOP packaging. No design changes required.

Q: What is the difference between 14-TSSOP and 14-SSOP packaging? A: 14-TSSOP has a 4.40mm body width; 14-SSOP has a 5.30mm body width. These are not mechanically interchangeable on the same PCB footprint. 74LVC32ADB,118 requires different PCB layout.

Q: Are Nexperia 74LVC32APW,118 and Diodes 74LVC32AT14-13 suitable replacements? A: Both are functionally compatible with identical 14-TSSOP packaging and -40°C to 125°C operating range. Propagation delays (5ns and 4.1ns respectively) are acceptable for most general-purpose logic applications. Verify timing requirements for your specific circuit.

Q: Why do some substitutes have lower maximum operating temperature (85°C vs 125°C)? A: 74LCX series devices (onsemi, Toshiba) are specified to 85°C maximum. Use these only if your application does not require operation above 85°C. For full -40°C to 125°C range, select 74LVC series alternatives.

Q: What does ROHS3 compliance mean? A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates the component meets EU environmental standards for restricted substances. All listed substitutes maintain equivalent compliance status.

Q: Is quiescent current difference significant between 1 µA and 40 µA options? A: For most applications, this difference is negligible. Select 1 µA options (SN74LVC32APW) for ultra-low-power battery-operated designs. For standard applications, 40 µA alternatives are acceptable.

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