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SN74HC32PW Equivalent & Substitute Parts
Part Overview
The SN74HC32PW is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in a 14-TSSOP surface mount package. This part is discontinued at DiGi Electronics. Equivalent and substitute parts are available from multiple manufacturers including onsemi, Fairchild Semiconductor, Nexperia USA Inc., and Diodes Incorporated. All substitutes maintain the same logic function, pin configuration, and electrical performance characteristics within the 74HC32 series.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | OR Gate |
| Number of Circuits | 4 |
| Number of Inputs | 2 |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -40°C ~ 85°C (standard) / -40°C ~ 125°C (extended) |
| Mounting Type | Surface Mount |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Base Product Number | 74HC32 |
Substitute Part Grouping Explanation
Substitution of the SN74HC32PW is determined by the following criteria:
- Logic Function: All substitutes implement the same 4-channel 2-input OR gate function
- Package Type: All substitutes use 14-TSSOP surface mount packaging with identical pin configuration
- Supply Voltage Range: All substitutes operate within 2V ~ 6V
- Input/Output Specifications: All substitutes maintain compatible input logic levels and output current ratings
- Mounting Configuration: All substitutes are surface mount devices suitable for the same PCB assembly process
Substitutes are grouped by manufacturer and packaging format (Cut Tape, Tape & Reel, or Bulk). Extended temperature range variants (-40°C ~ 125°C) and automotive-qualified versions (AEC-Q100) are available as alternatives to the standard temperature range.
Parameter Comparison
| Part Number | Manufacturer | Packaging | Voltage - Supply | Current - Quiescent (Max) | Max Propagation Delay @ 6V, 50pF | Operating Temperature | Product Status |
|---|---|---|---|---|---|---|---|
| SN74HC32PW | Texas Instruments | Tube | 2V ~ 6V | 2 µA | 17ns | -40°C ~ 85°C | Discontinued |
| SN74HC32PWR | Texas Instruments | Cut Tape (CT) & Digi-Reel® | 2V ~ 6V | 2 µA | 17ns | -40°C ~ 85°C | Active |
| MC74HC32ADTR2G | onsemi | Cut Tape (CT) & Digi-Reel® | 2V ~ 6V | 1 µA | 13ns | -55°C ~ 125°C | Active |
| MM74HC32MTC | Fairchild Semiconductor | Bulk | 2V ~ 6V | 2 µA | 17ns | -40°C ~ 85°C | Active |
| MM74HC32MTCX | onsemi | Tape & Reel (TR) | 2V ~ 6V | 2 µA | 17ns | -40°C ~ 85°C | Active |
| 74HC32PW,118 | Nexperia USA Inc. | Tape & Reel (TR) | 2V ~ 6V | 2 µA | 15ns | -40°C ~ 125°C | Active |
| 74HC32PW-Q100,118 | Nexperia USA Inc. | Tape & Reel (TR) | 2V ~ 6V | 2 µA | 15ns | -40°C ~ 125°C | Active |
| 74HC32T14-13 | Diodes Incorporated | Tape & Reel (TR) | 2V ~ 6V | 20 µA | 15ns | -40°C ~ 125°C | Active |
Engineering Selection Recommendations
Direct Replacement (Active Status): SN74HC32PWR from Texas Instruments is the active equivalent with identical electrical specifications and operating temperature range to the discontinued SN74HC32PW.
Extended Temperature Range: MC74HC32ADTR2G (onsemi), 74HC32PW,118 (Nexperia), 74HC32PW-Q100,118 (Nexperia), and 74HC32T14-13 (Diodes) support -40°C ~ 125°C operation, suitable for applications requiring extended temperature performance.
Automotive Applications: 74HC32PW-Q100,118 from Nexperia includes AEC-Q100 automotive qualification.
Packaging Considerations: Select based on procurement requirements—Cut Tape & Digi-Reel for standard distribution, Tape & Reel for high-volume assembly, or Bulk for specific sourcing needs.
Performance Variants: MC74HC32ADTR2G offers improved propagation delay (13ns) and lower quiescent current (1 µA) compared to standard variants. 74HC32T14-13 from Diodes has higher quiescent current (20 µA) and should be evaluated for power-sensitive applications.
Frequently Asked Questions (FAQ)
Q: Can SN74HC32PWR directly replace SN74HC32PW? A: Yes. SN74HC32PWR is the active Texas Instruments equivalent with identical electrical specifications, supply voltage range, operating temperature, and 14-TSSOP package configuration.
Q: What is the difference between standard and extended temperature variants? A: Standard variants operate -40°C ~ 85°C. Extended temperature variants (MC74HC32ADTR2G, Nexperia, Diodes) operate -40°C ~ 125°C, suitable for industrial and automotive environments.
Q: Is the 74HC32PW-Q100,118 suitable for automotive applications? A: Yes. This part carries AEC-Q100 automotive qualification from Nexperia and operates across -40°C ~ 125°C.
Q: How do packaging formats differ? A: Cut Tape & Digi-Reel is standard for component distribution. Tape & Reel is optimized for automated assembly lines. Bulk packaging is used for specific procurement channels. All formats contain identical die and electrical performance.
Q: What is the significance of the propagation delay differences? A: Propagation delay ranges from 13ns to 17ns at 6V with 50pF load. MC74HC32ADTR2G (13ns) and Nexperia/Diodes variants (15ns) offer faster switching than standard Texas Instruments and Fairchild parts (17ns). Select based on timing-critical circuit requirements.
Q: Are all substitutes RoHS3 compliant? A: All listed substitutes are RoHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.
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