SN74F244NG4 Equivalent & Substitute Parts

Part Overview

The SN74F244NG4 is a non-inverting buffer logic integrated circuit manufactured by Texas Instruments, featuring 2 elements with 4 bits per element and 3-state output capability. This 20-pin DIP package device operates across a 4.5V to 5.5V supply voltage range and is designed for digital signal buffering applications requiring high-speed logic switching.

The SN74F244NG4 is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or repair requirements for systems utilizing this logic buffer.

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-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SN74F244NG4 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Functional Equivalence Criteria:

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 Compatibility Criteria:

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

All substitute parts listed maintain identical functional parameters and package specifications, ensuring direct pin-for-pin compatibility and circuit-level interchangeability. Substitutes differ only in logic series designation (74F, 74AS, 74BCT) and product availability status.

Parameter Comparison

Part Number	Manufacturer	Series	Logic Type	Elements / Bits	Output Type	Current (High/Low)	Voltage Supply	Temp Range	Package	Product Status	Inventory
SN74F244NG4	Texas Instruments	74F	Buffer, Non-Inverting	2 / 4	3-State	15mA, 64mA	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	Discontinued	680 Pcs
SN74F244N	Texas Instruments	74F	Buffer, Non-Inverting	2 / 4	3-State	15mA, 64mA	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	Active	50200 Pcs
SN74AS241AN	Texas Instruments	74AS	Buffer, Non-Inverting	2 / 4	3-State	15mA, 64mA	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	Active	832 Pcs
SN74AS244AN	Texas Instruments	74AS	Buffer, Non-Inverting	2 / 4	3-State	15mA, 64mA	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	Active	3080 Pcs
SN74BCT244N	Texas Instruments	74BCT	Buffer, Non-Inverting	2 / 4	3-State	15mA, 64mA	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	Active	2800 Pcs
SN74F241N	Texas Instruments	74F	Buffer, Non-Inverting	2 / 4	3-State	15mA, 64mA	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	Active	2111 Pcs

Engineering Selection Recommendations

Primary Substitute (MFR Recommended): SN74F244N is the direct equivalent to SN74F244NG4, maintaining identical series designation (74F) and all functional parameters. This part is currently in active production status with substantial inventory availability (50200 units), ensuring long-term supply continuity. Both parts carry ROHS3 compliance and REACH unaffected status.

Secondary Substitutes (Parametric Equivalents): SN74AS241AN, SN74AS244AN, SN74BCT244N, and SN74F241N are parametric equivalents that maintain all critical electrical and mechanical specifications. These parts differ only in logic series technology (74AS or 74BCT variants) while preserving functional interchangeability. All secondary substitutes are in active production with confirmed inventory availability.

All substitute parts are ROHS3 compliant and REACH unaffected, meeting the same regulatory and environmental standards as the original SN74F244NG4.

Frequently Asked Questions (FAQ)

Q: Can SN74F244N be used as a direct replacement for SN74F244NG4? A: Yes. SN74F244N is the MFR recommended substitute, sharing identical logic series (74F), functional parameters, and 20-DIP package configuration. Pin-for-pin compatibility is confirmed.

Q: What is the difference between 74F, 74AS, and 74BCT logic series? A: These designations indicate different logic technology families within the TTL/CMOS logic spectrum. All three series maintain identical electrical specifications for this buffer application (15mA/64mA output current, 4.5V-5.5V supply, 0°C-70°C operating range). Series differences relate to internal circuit implementation and switching characteristics not specified in the provided parameters.

Q: Are all substitute parts available in the same 20-DIP package? A: Yes. All substitute parts are packaged in 20-DIP (0.300", 7.62mm) through-hole configuration, ensuring mechanical compatibility with existing PCB designs.

Q: Do substitute parts meet the same compliance standards? A: Yes. All substitute parts carry ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the original SN74F244NG4.

Q: Which substitute has the highest inventory availability? A: SN74F244N offers the highest inventory level at 50200 units, followed by SN74AS244AN at 3080 units and SN74BCT244N at 2800 units.

Q: Can I mix different logic series (74F, 74AS, 74BCT) in the same circuit? A: All substitute parts maintain identical electrical specifications for this application. Circuit-level compatibility is determined by the specified parameters (supply voltage, output current, operating temperature), which are uniform across all substitutes.

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