74HC244N,652 Equivalent & Substitute Parts

Part Overview

The 74HC244N,652 is a non-inverting buffer logic IC manufactured by NXP Semiconductors in a 20-DIP package. This component functions as a 2-element, 4-bit per element buffer with 3-state output capability, operating across a 2V to 6V supply voltage range. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HC244N,652
Manufacturer	NXP Semiconductors
Series	74HC
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Current - Output High, Low	7.8mA, 7.8mA
Voltage - Supply	2V ~ 6V
Operating Temperature	-40°C ~ 125°C (TA)
Package / Case	20-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 74HC244N,652 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Substitution Criteria:

Logic type: Buffer, Non-Inverting
Number of elements: 2
Number of bits per element: 4
Output type: 3-State
Output current capability: 7.8mA (high and low)
Supply voltage range: 2V ~ 6V
Package type: 20-DIP (0.300", 7.62mm)
Mounting type: Through Hole
Series compatibility: 74HC

All qualified substitutes maintain identical functional specifications and physical packaging, ensuring direct replacement capability in existing designs. Differences in operating temperature range and product status are noted but do not affect electrical substitutability within the specified operating conditions.

Parameter Comparison

Parameter	74HC244N,652 (NXP)	CD74HC244E (TI)	SN74HC244N (TI)	SN74HC244AN (TI)
Manufacturer	NXP Semiconductors	Texas Instruments	Texas Instruments	Texas Instruments
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	7.8mA, 7.8mA	7.8mA, 7.8mA	7.8mA, 7.8mA	7.8mA, 7.8mA
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Operating Temperature	-40°C ~ 125°C (TA)	-55°C ~ 125°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	20-DIP (0.300", 7.62mm)	20-DIP (0.300", 7.62mm)	20-DIP (0.300", 7.62mm)	20-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

CD74HC244E (Texas Instruments): This part is an active product with extended operating temperature range (-55°C to 125°C), providing broader environmental coverage than the original NXP part. ROHS3 compliance and active product status ensure long-term availability and supply chain stability.

SN74HC244N (Texas Instruments): An active Texas Instruments product with operating temperature range of -40°C to 85°C. This part meets the minimum temperature specification of the original component and maintains full electrical compatibility. Active status supports sustained procurement.

SN74HC244AN (Texas Instruments): Designated as the manufacturer-recommended substitute by Texas Instruments. Operating temperature range of -40°C to 85°C aligns with standard industrial specifications. Active product status and ROHS3 compliance ensure availability and regulatory compliance.

All three substitutes are electrically and mechanically interchangeable with the 74HC244N,652 within the specified operating conditions. Selection among these options depends on temperature range requirements and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC244E replace the 74HC244N,652 in all applications? A: Yes. The CD74HC244E maintains identical electrical specifications and 20-DIP package configuration. The extended operating temperature range (-55°C to 125°C) provides additional environmental margin compared to the original part's -40°C to 125°C range.

Q: What is the difference between SN74HC244N and SN74HC244AN? A: Both parts are functionally identical with matching electrical specifications and 20-DIP packaging. The primary distinction is that SN74HC244AN is designated as the manufacturer-recommended substitute. Both are active products from Texas Instruments with -40°C to 85°C operating temperature ranges.

Q: Are all substitute parts in the same physical package? A: Yes. All substitute parts use the 20-DIP (0.300", 7.62mm) package with through-hole mounting, ensuring direct PCB compatibility with the original 74HC244N,652.

Q: Does the operating temperature difference affect substitutability? A: Operating temperature differences do not affect substitutability within the specified application range. If your design operates within -40°C to 85°C, all substitutes are suitable. The CD74HC244E offers extended range to -55°C for applications requiring lower temperature operation.

Q: Are all substitutes RoHS compliant? A: Yes. All substitute parts carry ROHS3 compliance certification, matching the regulatory status of the original 74HC244N,652.

Q: Why is the original 74HC244N,652 marked as obsolete? A: Obsolete status indicates the part is no longer manufactured by NXP Semiconductors. Active equivalents from Texas Instruments (CD74HC244E, SN74HC244N, SN74HC244AN) provide direct functional replacement with assured long-term availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message