DM74ALS241AWM Equivalent & Substitute Parts

Part Overview

The DM74ALS241AWM is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates within the 74ALS logic family standard, with supply voltage range of 4.5V to 5.5V and operating temperature range of 0°C to 70°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	DM74ALS241AWM
Manufacturer	onsemi
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Current - Output High, Low	15mA, 24mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS241AWM are qualified based on strict electrical and mechanical parameter matching within the 74ALS logic family. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Logic Type: Buffer, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 4
Output Type: 3-State
Current - Output High, Low: 15mA, 24mA
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: 0°C ~ 70°C (TA)
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount

Substitute parts are categorized as follows:

Direct Manufacturer Equivalent: SN74ALS241CDWR (Texas Instruments) — identical electrical specifications and package footprint, active product status.

Similar Manufacturer Part: SN74ALS241CNSR (Texas Instruments) — matches all electrical parameters but uses 20-SO package (0.209", 5.30mm Width), discontinued at DiGi Electronics.

Parametric Equivalents: SN74ALS241CDW, SN74ALS244C-1DW, and SN74ALS244CDW (Texas Instruments) — all match electrical specifications and 20-SOIC package footprint, with last-time-buy product status.

Parameter Comparison

Parameter	DM74ALS241AWM	SN74ALS241CDWR	SN74ALS241CNSR	SN74ALS241CDW	SN74ALS244C-1DW	SN74ALS244CDW
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	2	2	2	2	2	2
Number of Bits per Element	4	4	4	4	4	4
Output Type	3-State	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	15mA, 24mA	15mA, 24mA	15mA, 24mA	15mA, 24mA	15mA, 24mA	15mA, 24mA
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SO (0.209", 5.30mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Discontinued at DiGi Electronics	Last Time Buy	Last Time Buy	Last Time Buy
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Selection: SN74ALS241CDWR is the recommended direct substitute. This Texas Instruments part maintains identical electrical specifications and 20-SOIC package footprint as the DM74ALS241AWM. The part carries active product status, ensuring long-term availability and supply chain stability. ROHS3 compliance provides environmental regulatory alignment.

Secondary Selection: SN74ALS241CDW, SN74ALS244C-1DW, and SN74ALS244CDW are parametric equivalents with matching electrical characteristics and identical package footprint. These parts carry last-time-buy status, indicating limited future availability. Selection of these alternatives should account for procurement timeline constraints.

Alternative Consideration: SN74ALS241CNSR matches all electrical parameters but uses a 20-SO package with reduced width (0.209" versus 0.295"). This package difference may require PCB layout modification and is not recommended for direct pin-compatible replacement without design review. This part is discontinued at DiGi Electronics.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS241CNSR be used as a direct replacement for DM74ALS241AWM?

A: SN74ALS241CNSR is not a direct pin-compatible replacement. While electrical specifications are identical, the package footprint differs: 20-SO (0.209" width) versus 20-SOIC (0.295" width). PCB layout modification is required for this substitution.

Q: What is the difference between SN74ALS241CDWR and SN74ALS241CDW?

A: Both parts are electrically identical with matching 20-SOIC package specifications. The primary difference is packaging format: SN74ALS241CDWR is supplied in cut tape, while SN74ALS241CDW is supplied in tube. Product status differs, with SN74ALS241CDWR active and SN74ALS241CDW in last-time-buy status.

Q: Are SN74ALS244C-1DW and SN74ALS244CDW suitable replacements?

A: Yes. Both parts match all electrical parameters and package specifications of the DM74ALS241AWM. The base product numbers differ (74ALS244 versus 74ALS241), but functional characteristics remain equivalent within the 74ALS logic family. Both carry last-time-buy status.

Q: What compliance certifications apply to substitute parts?

A: All Texas Instruments substitute parts listed are ROHS3 compliant and REACH unaffected. The original DM74ALS241AWM compliance status is not specified in available documentation.

Q: Should I prioritize product status when selecting a substitute?

A: Yes. SN74ALS241CDWR is active and recommended for new designs and long-term procurement. Parts with last-time-buy status (SN74ALS241CDW, SN74ALS244C-1DW, SN74ALS244CDW) should be evaluated based on project timeline and inventory requirements.

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