SN74ACT32N-NG Equivalent & Substitute Parts

Part Overview

The SN74ACT32N-NG is a 4-channel 2-input OR Gate logic integrated circuit manufactured by Texas Instruments in the 74ACT series. This device is classified as obsolete product status. The SN74ACT32N-NG is packaged in a 14-DIP (0.300", 7.62mm) through-hole configuration and operates across a supply voltage range of 4.5V to 5.5V with a maximum propagation delay of 9ns at 5V with 50pF load.

Due to its obsolete product status, equivalent substitute parts with active availability are necessary for new designs and ongoing production requirements. Substitute options maintain identical electrical performance while offering alternative packaging formats and current manufacturing availability.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	9ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C
Series	74ACT
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SN74ACT32N-NG are determined by strict equivalence across all electrical parameters and functional specifications. The substitution logic is based on the following criteria:

Electrical Parameter Equivalence: All substitute parts must maintain identical voltage supply range (4.5V ~ 5.5V), quiescent current (2 µA maximum), output current capability (24mA high and low), input logic levels (0.8V low, 2V high), and propagation delay characteristics (9ns @ 5V, 50pF).

Functional Equivalence: All substitute parts must be 4-channel 2-input OR Gate logic circuits within the 74ACT series.

Compliance Equivalence: All substitute parts must maintain ROHS3 compliance status.

Packaging Variations: Substitute parts may differ in mounting type (through-hole versus surface mount) and supplier device package format, provided all electrical and functional parameters remain identical.

The SN74ACT32N-NG (obsolete, through-hole 14-DIP) has two active substitute options: the SN74ACT32PWR (surface mount 14-TSSOP) and the SN74ACT32N (through-hole 14-PDIP, active status).

Parameter Comparison

Parameter	SN74ACT32N-NG (Main)	SN74ACT32PWR (Substitute)	SN74ACT32N (Substitute)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Series	74ACT	74ACT	74ACT
Logic Type	OR Gate	OR Gate	OR Gate
Number of Circuits	4	4	4
Number of Inputs	2	2	2
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA	2 µA	2 µA
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA
Input Logic Level - Low	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V
Max Propagation Delay @ V, Max CL	9ns @ 5V, 50pF	9ns @ 5V, 50pF	9ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Through Hole	Surface Mount	Through Hole
Supplier Device Package	14-PDIP	14-TSSOP	14-PDIP
Package / Case	14-DIP (0.300", 7.62mm)	14-TSSOP (0.173", 4.40mm Width)	14-DIP (0.300", 7.62mm)
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Through-Hole PCB Designs: The SN74ACT32N is the direct substitute for the SN74ACT32N-NG. Both devices use identical 14-DIP (0.300", 7.62mm) through-hole packaging. The SN74ACT32N maintains active product status with current manufacturing availability, ensuring long-term supply chain reliability. This option requires no PCB layout modifications.

For Surface Mount PCB Designs: The SN74ACT32PWR is the appropriate substitute when surface mount technology is required. This device uses 14-TSSOP (0.173", 4.40mm Width) surface mount packaging. The SN74ACT32PWR maintains active product status and ROHS3 compliance. PCB layout and footprint modifications are required for this option.

Compliance Considerations: Both substitute parts maintain ROHS3 compliance status, matching the original SN74ACT32N-NG specification. All three parts are manufactured by Texas Instruments within the 74ACT series, ensuring consistent quality and performance standards.

Availability: The SN74ACT32N offers 3746 pieces in current inventory. The SN74ACT32PWR offers 2887 pieces in current inventory. Both options provide active product status with ongoing manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT32PWR (surface mount) be used as a direct replacement for the SN74ACT32N-NG (through-hole)?

A: The SN74ACT32PWR is electrically and functionally equivalent to the SN74ACT32N-NG. However, it requires different PCB footprint and assembly processes due to its 14-TSSOP surface mount package versus the 14-DIP through-hole package. Direct board-level substitution without layout modification is not possible.

Q: What is the difference between SN74ACT32N and SN74ACT32N-NG?

A: Both devices are identical in electrical specifications and 14-DIP through-hole packaging. The primary difference is product status: SN74ACT32N-NG is obsolete, while SN74ACT32N is active. The SN74ACT32N is the recommended substitute for new designs and production.

Q: Are all three parts pin-compatible?

A: The SN74ACT32N and SN74ACT32N-NG are pin-compatible, both using 14-DIP through-hole packaging. The SN74ACT32PWR uses 14-TSSOP surface mount packaging and is not pin-compatible with the through-hole versions, though it maintains identical electrical functionality.

Q: Do the substitute parts maintain the same electrical performance?

A: Yes. All substitute parts maintain identical electrical parameters: 4.5V to 5.5V supply voltage, 2 µA maximum quiescent current, 24mA output current capability, and 9ns maximum propagation delay at 5V with 50pF load.

Q: What is the moisture sensitivity level (MSL) for the substitute parts?

A: The SN74ACT32PWR has MSL rating of 1 (Unlimited). The SN74ACT32N has MSL rating of Not Applicable. Both are suitable for standard storage and handling conditions.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both SN74ACT32PWR and SN74ACT32N maintain ROHS3 compliance status, matching the original SN74ACT32N-NG specification.

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