74ACT241PC Equivalent & Substitute Parts

Part Overview

The 74ACT241PC is a non-inverting buffer logic integrated circuit manufactured by onsemi, designed for 5.5V operation with 2 elements and 4 bits per element. This device features 3-state output capability and is housed in a 20-pin DIP package suitable for through-hole mounting. The part is currently classified as obsolete, making equivalent substitutes necessary for ongoing design support and component sourcing.

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	24mA, 24mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Through Hole
Package / Case	20-DIP (0.300", 7.62mm)
Supplier Device Package	20-PDIP
Series	74ACT

Substitute Part Grouping Explanation

Substitution for the 74ACT241PC is determined by strict equivalence 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: 24mA, 24mA
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

All substitute parts listed maintain identical electrical and mechanical specifications. Substitutes are grouped by manufacturer and product status to facilitate component selection based on availability and compliance requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Voltage Supply	Temp Range	Package	Product Status	Inventory (Pcs)
74ACT241PC	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Obsolete	2260
CD74ACT241E	Harris Corporation	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Obsolete	14209
CD74ACT244E	Harris Corporation	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Obsolete	6289
SN74ACT241N	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Active	1804
SN74ACT244N	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Active	3100
SN74ACT244NE4	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Active	1020
TC74ACT244PF	Toshiba Semiconductor and Storage	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Active	1697

Engineering Selection Recommendations

For applications requiring the 74ACT241PC, the following selection criteria apply:

Active Product Status Priority: SN74ACT241N, SN74ACT244N, SN74ACT244NE4 (Texas Instruments), and TC74ACT244PF (Toshiba) are currently in active production status, ensuring long-term availability and supply chain continuity.

RoHS Compliance: SN74ACT241N, SN74ACT244N, SN74ACT244NE4, and TC74ACT244PF are ROHS3 compliant, meeting modern environmental and regulatory requirements. CD74ACT241E and CD74ACT244E are RoHS non-compliant and should be selected only when legacy compliance status is acceptable.

Obsolete Alternatives: CD74ACT241E and CD74ACT244E (Harris Corporation) maintain full electrical and mechanical equivalence but are obsolete. These are suitable only for replacement applications where new stock availability is not a constraint.

Inventory Availability: CD74ACT241E offers the highest inventory level (14,209 pcs), followed by CD74ACT244E (6,289 pcs) and SN74ACT244N (3,100 pcs). Selection should balance compliance requirements with immediate availability needs.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT244N replace 74ACT241PC directly? A: Yes. SN74ACT244N is electrically and mechanically equivalent across all critical parameters: logic type, element count, bit configuration, output type, current ratings, voltage supply range, operating temperature, and 20-DIP package. Direct substitution is valid.

Q: What is the difference between CD74ACT241E and CD74ACT244E? A: Both parts are electrically equivalent with identical electrical specifications and 20-DIP packaging. The primary difference is the base product number (74ACT241 vs. 74ACT244), which reflects internal pin configuration variants. Both are functionally interchangeable for the 74ACT241PC application.

Q: Are the Texas Instruments parts (SN74ACT241N, SN74ACT244N, SN74ACT244NE4) interchangeable? A: Yes. All three Texas Instruments parts maintain identical electrical and mechanical specifications. SN74ACT244NE4 is a variant designation of SN74ACT244N. Selection between them depends on packaging and availability requirements.

Q: Why should I choose an active product over an obsolete one? A: Active products ensure ongoing manufacturing, supply chain stability, and long-term availability. Obsolete parts rely on existing inventory and may become unavailable. For new designs or long-term production, active products are recommended.

Q: Does RoHS compliance affect electrical performance? A: No. RoHS compliance is a manufacturing and material standard that does not alter electrical performance. ROHS3-compliant parts (SN74ACT241N, SN74ACT244N, SN74ACT244NE4, TC74ACT244PF) meet modern regulatory requirements while maintaining full electrical equivalence.

Q: Can I use TC74ACT244PF as a substitute? A: Yes. TC74ACT244PF (Toshiba) is electrically and mechanically equivalent and is in active production status with ROHS3 compliance. It is a valid substitute for 74ACT241PC.

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