SN74ACT14PW Equivalent & Substitute Parts

Part Overview

The SN74ACT14PW is a 6-channel inverter IC with Schmitt trigger inputs in a 14-TSSOP surface mount package, manufactured by Texas Instruments. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates within the 4.5V to 5.5V supply voltage range and is suitable for logic signal inversion with hysteresis characteristics provided by the Schmitt trigger configuration.

Substiute Parts

SN74ACT14PW

Texas InstrumentsIn Stock: 1947SN74ACT14PW Datasheet

Current PartRFQ

SN74ACT14PWR

Texas InstrumentsIn Stock: 5395SN74ACT14PWR Datasheet

DirectRFQ

74ACT14MTCX

onsemiIn Stock: 1592074ACT14MTCX Datasheet

MFR RecommendedRFQ

MC74ACT14DTR2G

onsemiIn Stock: 50434MC74ACT14DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74ACT14PW is determined by the following critical parameters:

• Logic Function: All substitutes must provide 6-channel inverter functionality with Schmitt trigger inputs
• Supply Voltage Range: 4.5V ~ 5.5V operation is required
• Package Type: 14-TSSOP surface mount package with identical pinout
• Output Drive Capability: 24mA output current (high and low)
• Temperature Range: -40°C ~ 85°C operating range
• Compliance: ROHS3 compliance and MSL Level 1 rating

The substitute parts listed below meet all these criteria and are functionally equivalent for direct replacement in the same circuit application.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT14PWR (Texas Instruments, Active Status): Direct manufacturer equivalent with identical electrical specifications and active product status. Available in Cut Tape and Digi-Reel packaging with 5300 units in stock. Recommended as the primary substitute for the discontinued SN74ACT14PW.

74ACT14MTCX (onsemi, Active Status): Functionally equivalent with marginally faster propagation delay (10ns vs 11.5ns). Available in Tape & Reel packaging with 15818 units in stock. Input logic level thresholds differ slightly (0.8V low, 2V high) but remain within acceptable operating margins for standard TTL/CMOS logic interfaces.

MC74ACT14DTR2G (onsemi, Active Status): Functionally equivalent with quiescent current specification of 4 µA (versus 2 µA for the main part). Available in Tape & Reel packaging with 50400 units in stock. Suitable for applications where the higher quiescent current is acceptable. Input logic level thresholds match 74ACT14MTCX specifications.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical 14-TSSOP package dimensions, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT14PWR be used as a direct replacement for SN74ACT14PW?

A: Yes. SN74ACT14PWR is manufactured by the same supplier (Texas Instruments) and provides identical electrical specifications, supply voltage range, output drive capability, and operating temperature range. The only difference is packaging format (Cut Tape/Digi-Reel versus Tube) and active product status.

Q: What are the differences between the onsemi substitutes (74ACT14MTCX and MC74ACT14DTR2G)?

A: Both onsemi parts are functionally equivalent inverter ICs with Schmitt trigger inputs. The primary difference is quiescent current: 74ACT14MTCX draws 2 µA maximum, while MC74ACT14DTR2G draws 4 µA maximum. Both have identical output drive capability (24mA), supply voltage range (4.5V ~ 5.5V), and operating temperature range (-40°C ~ 85°C).

Q: Are all substitute parts in the same 14-TSSOP package?

A: Yes. All substitute parts use the 14-TSSOP (0.173", 4.40mm Width) surface mount package with identical pinout and dimensions. No PCB layout modifications are required for substitution.

Q: Do the input logic level thresholds differ between parts?

A: The Texas Instruments parts (SN74ACT14PW and SN74ACT14PWR) specify input logic levels as 0.5V ~ 1.4V (low) and 1.2V ~ 2.1V (high). The onsemi parts (74ACT14MTCX and MC74ACT14DTR2G) specify 0.8V (low) and 2V (high). Both specifications are compatible with standard TTL/CMOS logic signal levels and do not affect functional substitution.

Q: Which substitute has the fastest propagation delay?

A: The 74ACT14MTCX has a maximum propagation delay of 10ns at 5V with 50pF load, compared to 11.5ns for the other parts. This 1.5ns difference is negligible for most applications and does not affect functional compatibility.

Q: Are all parts RoHS compliant?

A: Yes. All parts listed (main and substitutes) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, meeting current environmental and reliability standards.