74FR244PC Equivalent & Substitute Parts

Part Overview

The 74FR244PC is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability in a 20-DIP package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system support and new designs. The 74FR244PC operates within the 4.5V to 5.5V supply voltage range and is suitable for applications requiring buffering and signal distribution in TTL-compatible digital circuits.

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

Substitute Part Grouping Explanation

Substitute parts for the 74FR244PC are qualified based on strict electrical and mechanical parameter matching. All substitute parts maintain identical specifications across the following critical parameters:

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
Supplier Device Package: 20-PDIP

All substitute parts are manufactured by Texas Instruments and are available in active product status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Logic Type	Elements	Bits/Element	Output Type	I(out) High/Low (mA)	Supply Voltage	Temp Range	Package	Inventory (Pcs)
74FR244PC	onsemi	74FR	Obsolete	Buffer, Non-Inverting	2	4	3-State	15, 64	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	16786
SN74F244N	Texas Instruments	74F	Active	Buffer, Non-Inverting	2	4	3-State	15, 64	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	50200
SN74F244NE4	Texas Instruments	74F	Active	Buffer, Non-Inverting	2	4	3-State	15, 64	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	1088
SN74F241N	Texas Instruments	74F	Active	Buffer, Non-Inverting	2	4	3-State	15, 64	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	2111
SN74AS244AN	Texas Instruments	74AS	Active	Buffer, Non-Inverting	2	4	3-State	15, 64	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	3080
SN74AS244ANE4	Texas Instruments	74AS	Active	Buffer, Non-Inverting	2	4	3-State	15, 64	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	654
SN74AS241AN	Texas Instruments	74AS	Active	Buffer, Non-Inverting	2	4	3-State	15, 64	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	832
SN74BCT244N	Texas Instruments	74BCT	Active	Buffer, Non-Inverting	2	4	3-State	15, 64	4.5V ~ 5.5V	0°C ~ 70°C	20-DIP	2800

Engineering Selection Recommendations

All substitute parts listed are manufactured by Texas Instruments and maintain active product status, ensuring availability and ongoing manufacturer support. The substitute parts are organized by logic family series: 74F, 74AS, and 74BCT. Each substitute part is RoHS3 compliant and carries REACH Unaffected status, meeting modern environmental and regulatory requirements.

SN74F244N offers the highest inventory availability at 50,200 units and represents the primary substitute for the obsolete 74FR244PC. The 74F series provides direct functional equivalence with established supply chain presence.

SN74AS244AN and SN74AS244ANE4 from the 74AS series provide alternative substitutes with active status and adequate inventory levels. The 74AS series offers comparable electrical performance within the specified parameters.

SN74BCT244N from the 74BCT series represents an additional substitute option with 2,800 units in stock. The 74BCT series maintains full parameter compatibility with the original 74FR244PC specification.

All substitute parts are packaged in 20-DIP (0.300", 7.62mm) through-hole configuration, enabling direct mechanical and electrical replacement in existing PCB designs without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can SN74F244N directly replace the 74FR244PC in existing designs?

A: Yes. SN74F244N is electrically and mechanically equivalent to the 74FR244PC across all critical parameters: logic type, element count, bit configuration, output type, current ratings, supply voltage, operating temperature range, and 20-DIP package. Direct substitution is supported without circuit modification.

Q: What is the difference between the 74F, 74AS, and 74BCT series substitutes?

A: All three series (74F, 74AS, 74BCT) maintain identical electrical specifications for the parameters listed. The series designation indicates the logic family technology generation. All are functionally equivalent for the 74FR244PC application.

Q: Are all substitute parts RoHS compliant?

A: Yes. All Texas Instruments substitute parts listed are RoHS3 compliant and carry REACH Unaffected status, meeting current environmental and regulatory standards.

Q: Why is the 74FR244PC listed as obsolete?

A: The 74FR244PC is an onsemi product that has reached end-of-life status. Texas Instruments equivalents in the 74F, 74AS, and 74BCT series remain in active production and are recommended for new designs and ongoing system support.

Q: Can I use SN74F241N as a substitute?

A: Yes. SN74F241N meets all electrical and mechanical parameter requirements for substitution. It is available in active status with 2,111 units in inventory.

Q: What inventory levels are available for each substitute?

A: SN74F244N has the highest availability at 50,200 units. SN74AS244AN provides 3,080 units, SN74BCT244N offers 2,800 units, SN74F241N has 2,111 units, SN74AS244ANE4 provides 654 units, and SN74AS241AN has 832 units in stock.

Q: Are there any thermal or electrical performance differences between substitutes?

A: No. All substitute parts maintain identical operating temperature range (0°C ~ 70°C), supply voltage (4.5V ~ 5.5V), and output current specifications (15mA high, 64mA low) as the original 74FR244PC.

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