74ACTQ04MTCX Equivalent & Substitute Parts

Part Overview

The 74ACTQ04MTCX is a 6-channel inverter logic IC manufactured by onsemi in a 14-TSSOP surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74ACTQ04MTCX operates within the 4.5V to 5.5V supply voltage range and is suitable for TTL-compatible logic applications requiring signal inversion across multiple channels.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
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 @ 5V, 50pF	7.5ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74ACTQ04MTCX is determined by the following critical parameters:

Logic function: 6-channel inverter with single input per channel
Supply voltage range: 4.5V ~ 5.5V
Output drive capability: 24mA high and low
Input logic thresholds: 0.8V low, 2V high
Operating temperature range: -40°C ~ 85°C
Mounting type: Surface mount
Package compatibility: 14-TSSOP or 14-SSOP

All substitute parts listed maintain these core electrical specifications. Variations in quiescent current (2 µA to 4 µA) and propagation delay (7.5ns to 8.5ns) remain within acceptable tolerances for standard TTL logic applications. Package variants (14-TSSOP versus 14-SSOP) differ in physical dimensions but maintain electrical equivalence.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Supply	Current - Quiescent (Max)	Propagation Delay @ 5V, 50pF	Package / Case	Packaging Type
74ACTQ04MTCX	onsemi	Obsolete	4.5V ~ 5.5V	2 µA	7.5ns	14-TSSOP (0.173", 4.40mm)	Tube
MC74ACT04DTR2G	onsemi	Active	4.5V ~ 5.5V	4 µA	8.5ns	14-TSSOP (0.173", 4.40mm)	Tape & Reel (TR)
SN74ACT04DBR	Texas Instruments	Active	4.5V ~ 5.5V	2 µA	8.5ns	14-SSOP (0.209", 5.30mm)	Tape & Reel (TR)
SN74ACT04PW	Texas Instruments	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	8.5ns	14-TSSOP (0.173", 4.40mm)	Tube
SN74ACT04PWR	Texas Instruments	Active	4.5V ~ 5.5V	2 µA	8.5ns	14-TSSOP (0.173", 4.40mm)	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

For new designs and ongoing procurement, SN74ACT04PWR is the preferred substitute. This Texas Instruments part maintains active product status, carries RoHS3 compliance certification, and is available in standard cut tape and Digi-Reel packaging formats suitable for automated assembly. The electrical specifications match the 74ACTQ04MTCX within acceptable operating margins.

MC74ACT04DTR2G provides an alternative from onsemi with active status and high inventory availability. This part is supplied in tape and reel format and maintains identical package dimensions to the original 74ACTQ04MTCX.

SN74ACT04DBR offers compatibility for applications where 14-SSOP package dimensions are acceptable. This part is active and RoHS3 compliant but features a wider package footprint (5.30mm versus 4.40mm).

SN74ACT04PW is discontinued at DiGi Electronics and should not be selected for new procurement despite matching package specifications.

Frequently Asked Questions (FAQ)

Q: Can I use SN74ACT04DBR as a direct replacement for 74ACTQ04MTCX on existing PCBs?

A: No. While SN74ACT04DBR is electrically equivalent, it uses a 14-SSOP package (5.30mm width) instead of the 14-TSSOP package (4.40mm width) of the original part. PCB footprints are not compatible. This part is suitable only for new designs where the footprint can be updated.

Q: What is the difference between MC74ACT04DTR2G and SN74ACT04PWR?

A: Both parts are electrically equivalent inverter ICs with identical package dimensions (14-TSSOP). MC74ACT04DTR2G is manufactured by onsemi and supplied in tape and reel format. SN74ACT04PWR is manufactured by Texas Instruments and supplied in cut tape with Digi-Reel packaging. Selection depends on procurement preferences and assembly equipment compatibility.

Q: Why does MC74ACT04DTR2G show higher quiescent current (4 µA) compared to the original 74ACTQ04MTCX (2 µA)?

A: The quiescent current specification of 4 µA for MC74ACT04DTR2G remains within acceptable operating parameters for TTL logic applications. This variation does not affect functional compatibility or circuit performance in standard applications.

Q: Are all substitute parts RoHS compliant?

A: The Texas Instruments parts (SN74ACT04DBR, SN74ACT04PW, SN74ACT04PWR) carry RoHS3 compliance certification. MC74ACT04DTR2G does not list explicit RoHS status in the provided specifications. Verify RoHS requirements with your procurement or compliance department before final selection.

Q: What packaging formats are available for these substitute parts?

A: MC74ACT04DTR2G is supplied in tape and reel format. SN74ACT04PW and SN74ACT04PWR are supplied in tube and cut tape formats respectively. SN74ACT04DBR is supplied in tape and reel format. Select based on your assembly process requirements and minimum order quantities.

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