74ABT244CPC Equivalent & Substitute Parts

Part Overview

The 74ABT244CPC is a non-inverting buffer logic integrated circuit manufactured by onsemi, designed for 2 element, 4-bit per element configurations with 3-state output capability. This device operates across a 4.5V to 5.5V supply voltage range and is housed in a 20-pin DIP package. The part is currently classified as obsolete, making identification of active equivalent and substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	74ABT244CPC
Manufacturer	onsemi
Series	74ABT
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Current - Output High	32mA
Current - Output Low	64mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	20-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the 74ABT244CPC is determined by the following critical parameters:

Logic Type: Buffer, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 4
Output Type: 3-State
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C (TA)
Package / Case: 20-DIP (0.300", 7.62mm)
Mounting Type: Through Hole

Substitute parts must maintain identical values across all these parameters. Output current specifications (Current - Output High, Low) may vary within acceptable ranges for the 74ABT logic family, provided the substitute part meets or exceeds the original specifications or operates within compatible system requirements.

Parameter Comparison

Parameter	74ABT244CPC (onsemi)	SN74ABT244AN (TI)	SN74ABT241AN (TI)	SN74ABT2244AN (TI)
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 (mA)	32	32	32	32
Current - Output Low (mA)	64	64	64	12
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
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	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All three Texas Instruments substitute parts (SN74ABT244AN, SN74ABT241AN, SN74ABT2244AN) are classified as active products with ROHS3 compliance, providing long-term availability and regulatory alignment compared to the obsolete onsemi 74ABT244CPC.

SN74ABT244AN and SN74ABT241AN are parametric equivalents to the 74ABT244CPC, maintaining identical output current specifications (32mA high, 64mA low). These parts are direct functional replacements suitable for applications requiring exact current matching.

SN74ABT2244AN maintains the same logic configuration and output high current (32mA) but specifies 12mA output low current, which differs from the original 64mA specification. This part is functionally compatible for applications where reduced output low current is acceptable or beneficial.

All substitute parts maintain identical supply voltage ranges, operating temperature specifications, and physical packaging, ensuring mechanical and electrical compatibility in through-hole mounting applications.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT2244AN be used as a direct replacement for 74ABT244CPC?

A: SN74ABT2244AN is functionally compatible as a non-inverting buffer with identical logic configuration, element count, and bit width. However, the output low current specification differs (12mA versus 64mA). Compatibility depends on system current requirements at the output low state. Applications with lower current demands will operate without issue; applications requiring 64mA output low current may require circuit evaluation.

Q: What is the primary reason to substitute the 74ABT244CPC?

A: The 74ABT244CPC is classified as obsolete. Substitution ensures access to active, in-stock components with guaranteed long-term availability and regulatory compliance (ROHS3).

Q: Are all substitute parts pin-compatible with the 74ABT244CPC?

A: Yes. All substitute parts use the 20-DIP (0.300", 7.62mm) package with through-hole mounting, providing identical pinout and physical compatibility for direct board-level replacement.

Q: Do the Texas Instruments substitutes meet the same environmental specifications?

A: Yes. All substitute parts operate across the identical -40°C to 85°C temperature range and 4.5V to 5.5V supply voltage range as the original 74ABT244CPC.

Q: Which substitute part is the closest match to the original 74ABT244CPC?

A: SN74ABT244AN is the closest parametric equivalent, maintaining identical output current specifications (32mA high, 64mA low) and active product status with ROHS3 compliance.

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