DM74ALS652WM Equivalent & Substitute Parts

Part Overview

The DM74ALS652WM is a non-inverting transceiver logic IC manufactured by onsemi, featuring 1 element with 8 bits per element and 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 24-SOP package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	15mA, 24mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Package / Case	24-SOIC (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS652WM are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 1
Number of Bits per Element: 8
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: 24-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts meet these parameters without exception. Substitutes are classified into two categories: direct manufacturer equivalents and parametric equivalents. Direct equivalents share identical base product numbers and electrical specifications. Parametric equivalents maintain all critical electrical and mechanical parameters while potentially differing in base product designation or packaging format.

Parameter Comparison

Parameter	DM74ALS652WM (onsemi)	SN74ALS652ADWR (TI)	SN74ALS646ADW (TI)	SN74ALS652A-1DW (TI)	SN74ALS652ADW (TI)
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting
Number of Elements	1	1	1	1	1
Number of Bits per Element	8	8	8	8	8
Output Type	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	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
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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	24-SOIC (0.295", 7.50mm Width)	24-SOIC (0.295", 7.50mm Width)	24-SOIC (0.295", 7.50mm Width)	24-SOIC (0.295", 7.50mm Width)	24-SOIC (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	REACH Unaffected	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All four substitute parts are manufactured by Texas Instruments and maintain active product status, providing long-term availability and supply chain stability compared to the obsolete onsemi DM74ALS652WM. All substitutes are ROHS3 compliant, meeting current environmental and regulatory requirements.

SN74ALS652ADWR is supplied in Tape & Reel (TR) packaging format, suitable for high-volume automated assembly operations. This part offers the highest inventory availability at 2,845 pieces.

SN74ALS652ADW, SN74ALS652A-1DW, and SN74ALS646ADW are supplied in Tube packaging format, appropriate for lower-volume applications and manual assembly processes. SN74ALS652ADW provides 2,200 pieces in stock, while SN74ALS652A-1DW and SN74ALS646ADW offer 842 and 877 pieces respectively.

Selection between these substitutes should be based on procurement volume requirements, assembly methodology, and packaging format compatibility with existing production workflows.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS652ADWR replace DM74ALS652WM in existing designs?

A: Yes. SN74ALS652ADWR is a direct manufacturer equivalent with identical electrical specifications, output characteristics, and package dimensions. The primary difference is packaging format (Tape & Reel versus SOP) and active product status from Texas Instruments.

Q: What is the difference between SN74ALS652ADW and SN74ALS646ADW?

A: Both parts are parametric equivalents with identical electrical performance and package specifications. The difference lies in the base product number designation (74ALS652 versus 74ALS646), which reflects internal design variations that do not affect functional compatibility in applications requiring the specified electrical parameters.

Q: Are all substitute parts pin-compatible with the original DM74ALS652WM?

A: Yes. All substitute parts use the 24-SOIC package with identical 0.295" width and pin configuration, ensuring direct mechanical and electrical compatibility.

Q: Why is the DM74ALS652WM classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by onsemi. Active Texas Instruments equivalents provide continued access to functionally identical components with ongoing manufacturer support.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel and Tube packaging formats contain identical die and electrical specifications. Packaging selection is determined by assembly process requirements and volume considerations only.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All Texas Instruments substitute parts carry ROHS3 compliance certification, meeting current environmental regulations. The original onsemi part is REACH Unaffected.

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