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SN74LVC32APWRE4 Equivalent & Substitute Parts
Part Overview
The SN74LVC32APWRE4 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 device is ROHS3 compliant and rated for operating temperatures from -40°C to 125°C.
The SN74LVC32APWRE4 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from multiple manufacturers including Texas Instruments, Nexperia USA Inc., onsemi, Diodes Incorporated, and Toshiba Semiconductor and Storage. These alternatives maintain functional compatibility while offering different packaging options and availability status.
Substiute Parts
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 |
| Input Logic Level - Low | 0.7V ~ 0.8V |
| Input Logic Level - High | 1.7V ~ 2V |
| Max Propagation Delay @ V, Max CL | 3.6ns @ 3.3V, 50pF |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the SN74LVC32APWRE4 are classified based on strict adherence to the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Logic Type: OR Gate (4-channel, 2-input configuration)
- Mounting Type: Surface Mount
- Package / Case: 14-TSSOP (0.173", 4.40mm Width)
- Base Product Number: 74LVC32 or 74LCX32 series
Electrical Parameter Compatibility:
- Supply Voltage Range: Must support 1.65V minimum to 3.6V maximum
- Output Current: 24mA high and low
- Propagation Delay: Maximum 5.5ns @ 3.3V, 50pF load
- Operating Temperature: -40°C to 125°C (or -40°C to 85°C for 74LCX variants)
Packaging Variations Allowed:
- Cut Tape (CT) & Digi-Reel®
- Tape & Reel (TR)
- Tube
Substitutes are grouped by manufacturer and product status (Active, Obsolete, or Discontinued). All listed substitutes maintain the same logic function, pin count, and package footprint as the original part.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage - Supply | Current - Quiescent (Max) | Max Propagation Delay @ 3.3V, 50pF | Operating Temperature | Product Status | Packaging |
|---|---|---|---|---|---|---|---|
| SN74LVC32APWRE4 | Texas Instruments | 1.65V ~ 3.6V | 1 µA | 3.6ns | -40°C ~ 125°C | Discontinued | 14-TSSOP |
| SN74LVC32APWR | Texas Instruments | 1.65V ~ 3.6V | 1 µA | 3.6ns | -40°C ~ 125°C | Active | Cut Tape (CT) & Digi-Reel® |
| SN74LVC32APWRG3 | Texas Instruments | 1.65V ~ 3.6V | 1 µA | 3.6ns | -40°C ~ 125°C | Active | Tape & Reel (TR) |
| SN74LVC32APWT | Texas Instruments | 1.65V ~ 3.6V | 1 µA | 3.6ns | -40°C ~ 125°C | Active | Tape & Reel (TR) |
| 74LCX32MTCX | onsemi | 2V ~ 3.6V | 10 µA | 5.5ns | -40°C ~ 85°C | Active | Cut Tape (CT) & Digi-Reel® |
| 74LVC32ADB,118 | Nexperia USA Inc. | 1.2V ~ 3.6V | 40 µA | 3.8ns | -40°C ~ 125°C | Obsolete | 14-SSOP |
| 74LVC32APW,112 | Nexperia USA Inc. | 1.2V ~ 3.6V | 40 µA | 5ns | -40°C ~ 125°C | Obsolete | Tube |
| 74LVC32APW,118 | Nexperia USA Inc. | 1.2V ~ 3.6V | 40 µA | 5ns | -40°C ~ 125°C | Active | Tape & Reel (TR) |
| 74LVC32AT14-13 | Diodes Incorporated | 1.65V ~ 3.6V | 40 µA | 4.1ns | -40°C ~ 125°C | Active | Tape & Reel (TR) |
| MC74LCX32DTG | onsemi | 2V ~ 3.6V | 10 µA | 5.5ns | -40°C ~ 85°C | Obsolete | 14-TSSOP |
| TC74LCX32FTELM | Toshiba Semiconductor and Storage | 1.65V ~ 3.6V | 10 µA | 5.5ns | -40°C ~ 85°C | Active | Cut Tape (CT) |
Engineering Selection Recommendations
Texas Instruments 74LVC32 Series (Recommended Primary Substitutes): SN74LVC32APWR, SN74LVC32APWRG3, and SN74LVC32APWT are direct functional equivalents manufactured by Texas Instruments. These parts maintain identical electrical specifications to the original SN74LVC32APWRE4, including 1 µA quiescent current and 3.6ns propagation delay. All three are ROHS3 compliant and rated for -40°C to 125°C operation. Selection between these variants depends on packaging requirements: Cut Tape & Digi-Reel® (APWR), Tape & Reel (APWRG3 or APWT). Inventory availability is high across all three variants.
Nexperia USA Inc. 74LVC32 Series: 74LVC32APW,118 is an active product offering equivalent logic function with extended supply voltage range (1.2V to 3.6V) and is available in Tape & Reel packaging. This part exhibits slightly higher quiescent current (40 µA) and propagation delay (5ns) compared to the original. 74LVC32APW,112 and 74LVC32ADB,118 are obsolete products and should be avoided for new designs unless legacy compatibility is required.
Diodes Incorporated 74LVC32 Series: 74LVC32AT14-13 is an active product with supply voltage range of 1.65V to 3.6V, matching the original part's lower voltage limit. Quiescent current is 40 µA with propagation delay of 4.1ns. This part is available in Tape & Reel packaging and is ROHS3 compliant.
onsemi 74LCX32 Series: 74LCX32MTCX and MC74LCX32DTG are 74LCX variants with minimum supply voltage of 2V (not 1.65V). These parts exhibit higher quiescent current (10 µA) and propagation delay (5.5ns), with operating temperature limited to -40°C to 85°C. 74LCX32MTCX is active; MC74LCX32DTG is obsolete.
Toshiba Semiconductor and Storage 74LCX32 Series: TC74LCX32FTELM is an active product with supply voltage range of 1.65V to 3.6V and operating temperature of -40°C to 85°C. Quiescent current is 10 µA with propagation delay of 5.5ns. This part is available in Cut Tape packaging and is RoHS compliant.
Selection Guidance: For applications requiring the lowest quiescent current (1 µA) and fastest propagation delay (3.6ns), select from the Texas Instruments 74LVC32 series. For applications with relaxed timing requirements or lower cost priority, Nexperia, Diodes Incorporated, or Toshiba variants are acceptable. Verify minimum supply voltage requirements: parts rated 1.2V or 2V minimum may not be suitable for applications requiring 1.65V operation. All listed parts are ROHS3 compliant and suitable for industrial temperature range applications (-40°C to 125°C).
Frequently Asked Questions (FAQ)
Q: Can I use SN74LVC32APWR as a direct replacement for SN74LVC32APWRE4?
A: Yes. SN74LVC32APWR is a direct functional equivalent with identical electrical specifications. The difference is packaging format: APWR is supplied in Cut Tape & Digi-Reel®, while APWRE4 was supplied in a different reel configuration. Both parts are manufactured by Texas Instruments, maintain the same 14-TSSOP footprint, and are ROHS3 compliant.
Q: What is the difference between 74LVC32 and 74LCX32 series?
A: Both are 4-channel 2-input OR gates in 14-TSSOP packages. The 74LVC32 series (Texas Instruments, Nexperia, Diodes) supports supply voltage down to 1.2V or 1.65V with lower quiescent current (1 µA to 40 µA). The 74LCX32 series (onsemi, Toshiba) requires minimum 2V supply, has higher quiescent current (10 µA), and is limited to -40°C to 85°C operating temperature. For applications requiring 1.65V operation or extended temperature range to 125°C, use 74LVC32 variants.
Q: Are Nexperia 74LVC32APW,112 and 74LVC32APW,118 suitable for new designs?
A: 74LVC32APW,118 is active and suitable for new designs. 74LVC32APW,112 is obsolete and should not be used for new designs. Both parts have higher quiescent current (40 µA) and propagation delay (5ns) compared to Texas Instruments equivalents, but remain functionally compatible for OR gate logic applications.
Q: What packaging options are available for substitutes?
A: Substitutes are available in Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and Tube packaging. All maintain the same 14-TSSOP or 14-SSOP surface mount footprint. Selection depends on assembly process requirements and volume. Tape & Reel is standard for automated assembly; Cut Tape & Digi-Reel® offers flexibility for lower volumes; Tube packaging is used for manual assembly or legacy processes.
Q: Can I substitute a 74LCX32 part if the application operates at 1.65V?
A: No. 74LCX32 variants (onsemi, Toshiba) require minimum 2V supply voltage. Applications operating at 1.65V must use 74LVC32 variants from Texas Instruments, Nexperia, or Diodes Incorporated, which support 1.65V minimum supply.
Q: What is the impact of higher quiescent current in substitute parts?
A: Nexperia and Diodes parts exhibit 40 µA quiescent current compared to 1 µA in Texas Instruments SN74LVC32APWR. This increases standby power consumption by approximately 40 times. For battery-powered or low-power applications, Texas Instruments variants are preferred. For standard industrial applications with continuous power supply, the difference is negligible.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.
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