SN74AS241ADWR Equivalent & Substitute Parts

Part Overview

The SN74AS241ADWR is a non-inverting buffer logic IC manufactured by Texas Instruments, featuring 2 elements with 4 bits per element and 3-state output capability in a 20-SOIC surface mount package. This part is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain identical electrical characteristics and mechanical compatibility to ensure direct replacement without circuit redesign.

Key Parameters

Parameter	Value
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Current - Output High, Low	15mA, 64mA
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SN74AS241ADWR are qualified based on the following criteria:

Electrical Parameters (Must Match):

Logic Type: Buffer, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 4
Output Type: 3-State
Current - Output High, Low: 15mA, 64mA
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: 0°C ~ 70°C (TA)

Mechanical Parameters (Must Match):

Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts meet these criteria across different logic series (74AS, 74BCT, 74F), enabling functional equivalence while offering improved product status and availability.

Parameter Comparison

Parameter	SN74AS241ADWR	SN74AS244ADWR	SN74BCT244DWR	SN74F244DWR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Series	74AS	74AS	74BCT	74F
Product Status	Obsolete	Active	Active	Active
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	2	2	2	2
Number of Bits per Element	4	4	4	4
Output Type	3-State	3-State	3-State	3-State
Current - Output High, Low	15mA, 64mA	15mA, 64mA	15mA, 64mA	15mA, 64mA
Voltage - Supply	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)
Package / Case	20-SOIC (0.295", 7.50mm 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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	701 Pcs New Original In Stock	803 Pcs New Original In Stock	641 Pcs New Original In Stock	7783 Pcs New Original In Stock

Engineering Selection Recommendations

SN74AS244ADWR is the primary substitute for the obsolete SN74AS241ADWR. Both parts share identical series designation (74AS) and maintain all electrical and mechanical specifications. The SN74AS244ADWR holds active product status with confirmed inventory availability, making it the preferred direct replacement for existing designs.

SN74BCT244DWR provides functional equivalence through the 74BCT logic series. This part maintains all critical electrical parameters and mechanical compatibility while offering active product status. Selection of this substitute may be appropriate when 74BCT series components are standardized within the design platform.

SN74F244DWR represents the highest inventory availability (7783 pcs) among all substitutes and maintains complete electrical and mechanical compatibility. The 74F series designation indicates different internal logic implementation, but all specified parameters remain identical. This part is suitable for applications where supply chain continuity is prioritized.

All three substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), ensuring compliance with environmental and reliability requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74AS244ADWR directly replace SN74AS241ADWR without PCB modification?

A: Yes. Both parts share identical electrical specifications (logic type, element count, bit configuration, output type, current ratings, supply voltage, operating temperature), mechanical package (20-SOIC surface mount), and compliance certifications (ROHS3, MSL 1). Direct pin-for-pin substitution is supported.

Q: What is the difference between the 74AS, 74BCT, and 74F logic series?

A: These designations indicate different internal logic family implementations. However, for the specified buffer applications, all three series maintain identical electrical output characteristics (15mA/64mA current ratings, 4.5V-5.5V supply voltage, 0°C-70°C operating range) and mechanical compatibility (20-SOIC package). Series selection depends on design standardization and supply chain strategy.

Q: Why is SN74AS241ADWR marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. The SN74AS244ADWR provides continued support within the same 74AS series with identical specifications and active product status.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the 20-SOIC surface mount package with identical dimensions (0.295", 7.50mm width). Packaging formats differ (Tape & Reel for SN74AS244ADWR and SN74BCT244DWR; Cut Tape & Digi-Reel for SN74F244DWR), but the physical component package remains consistent across all options.

Q: Which substitute offers the best supply chain availability?

A: SN74F244DWR currently maintains the highest inventory level at 7783 pcs, followed by SN74AS244ADWR at 803 pcs and SN74BCT244DWR at 641 pcs. Inventory levels are subject to change based on market conditions.

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