SN74AS244ANE4 Equivalent & Substitute Parts

Part Overview

The SN74AS244ANE4 is a non-inverting buffer logic integrated circuit manufactured by Texas Instruments, designed for 8-channel buffering applications with 3-state output capability. This 20-pin DIP package device operates within the 4.5V to 5.5V supply voltage range and is classified as Active product status. The device contains 2 elements with 4 bits per element, providing 15mA output high current and 64mA output low current specifications.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same logic family series or compatible logic families, ensuring functional interchangeability within the specified operating conditions.

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	15mA
Current - Output Low	64mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Through Hole
Package / Case	20-DIP (0.300", 7.62mm)
Supplier Device Package	20-PDIP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SN74AS244ANE4 are identified based on strict parametric equivalence across the following critical 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: 15mA
Current - Output Low: 64mA
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: 0°C ~ 70°C (TA)

Mechanical Parameters (Must Match):

Mounting Type: Through Hole
Package / Case: 20-DIP (0.300", 7.62mm)
Supplier Device Package: 20-PDIP

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected
ECCN: EAR99
HTSUS: 8542.39.0001

All identified substitute parts maintain identical electrical, mechanical, and compliance specifications. Substitution is valid across different logic family series (74AS, 74F, 74BCT) when all parameters remain constant.

Parameter Comparison

Part Number	Manufacturer	Series	Logic Type	Elements	Bits/Element	Output Type	I_out High (mA)	I_out Low (mA)	Supply Voltage	Temp Range	Package	Status	Inventory (Pcs)
SN74AS244ANE4	Texas Instruments	74AS	Buffer, Non-Inverting	2	4	3-State	15	64	4.5V ~ 5.5V	0°C ~ 70°C	20-PDIP	Active	654
SN74AS241AN	Texas Instruments	74AS	Buffer, Non-Inverting	2	4	3-State	15	64	4.5V ~ 5.5V	0°C ~ 70°C	20-PDIP	Active	832
SN74AS244AN	Texas Instruments	74AS	Buffer, Non-Inverting	2	4	3-State	15	64	4.5V ~ 5.5V	0°C ~ 70°C	20-PDIP	Active	3080
SN74BCT244N	Texas Instruments	74BCT	Buffer, Non-Inverting	2	4	3-State	15	64	4.5V ~ 5.5V	0°C ~ 70°C	20-PDIP	Active	2800
SN74F241N	Texas Instruments	74F	Buffer, Non-Inverting	2	4	3-State	15	64	4.5V ~ 5.5V	0°C ~ 70°C	20-PDIP	Active	2111
SN74F244N	Texas Instruments	74F	Buffer, Non-Inverting	2	4	3-State	15	64	4.5V ~ 5.5V	0°C ~ 70°C	20-PDIP	Active	50200

Engineering Selection Recommendations

All identified substitute parts maintain Active product status with ROHS3 compliance and REACH unaffected certification. Selection among equivalent parts should be based on:

Availability: SN74F244N demonstrates the highest inventory level at 50,200 pieces, followed by SN74AS244AN at 3,080 pieces. SN74AS244ANE4 maintains 654 pieces in stock.

Series Compatibility: Parts within the same logic family series (74AS or 74F) provide direct functional equivalence. The 74BCT series variant (SN74BCT244N) offers equivalent electrical performance with alternative logic family characteristics.

Compliance Status: All substitute parts maintain identical regulatory compliance across RoHS, REACH, ECCN, and HTSUS classifications, ensuring no additional qualification requirements for substitution.

Product Status: All parts are classified as Active, confirming ongoing manufacturer support and availability for long-term applications.

Frequently Asked Questions (FAQ)

Q: Can SN74F244N be used as a direct replacement for SN74AS244ANE4?

A: Yes. Both parts maintain identical electrical parameters (15mA output high, 64mA output low, 4.5V to 5.5V supply), identical mechanical specifications (20-PDIP package, through-hole mounting), and identical compliance certifications. The difference in logic family series (74F versus 74AS) does not affect functional interchangeability when all electrical and mechanical parameters are equivalent.

Q: What is the difference between SN74AS244AN and SN74AS244ANE4?

A: Both parts are from the 74AS series with identical electrical and mechanical specifications. The suffix variation (AN versus ANE4) indicates different packaging or supplier designations but does not affect functional equivalence. Both are suitable substitutes for each other.

Q: Are there any temperature or voltage derating considerations when substituting these parts?

A: No. All substitute parts operate within the identical temperature range (0°C to 70°C) and supply voltage range (4.5V to 5.5V). No derating or operational adjustments are required when substituting between equivalent parts.

Q: Can these buffer parts be used in applications requiring higher output current?

A: No. All equivalent parts maintain the same output current specifications (15mA high, 64mA low). If higher output current is required, alternative buffer designs with different current ratings must be selected.

Q: Is the 20-PDIP package compatible with standard DIP sockets?

A: Yes. The 20-PDIP package (20-DIP with 0.300" pin spacing and 7.62mm body width) is compatible with standard 20-pin DIP sockets and breadboard configurations. All substitute parts share this identical package specification.

Q: What is the significance of the 3-State output type?

A: The 3-State output enables multiple buffer outputs to be connected to a common bus line through output enable control. This feature is consistent across all substitute parts and does not change during substitution.

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