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SN74ACT244PWRE4 Equivalent & Substitute Parts
Part Overview
The SN74ACT244PWRE4 is a non-inverting buffer logic IC manufactured by Texas Instruments, featuring 2 elements with 4 bits per element and 3-state output capability. This component is classified as discontinued at DiGi Electronics, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. The part operates within the 4.5V to 5.5V supply voltage range and is housed in a 20-TSSOP surface mount package.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SN74ACT244PWRE4 |
| Manufacturer | Texas Instruments |
| 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-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the SN74ACT244PWRE4 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-TSSOP (0.173", 4.40mm Width)
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
Substitute parts are grouped into two categories: MFR Recommended substitutes (same base product number 74ACT244 from Texas Instruments) and Parametric Equivalents (alternative manufacturers or variants meeting identical electrical and mechanical specifications).
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Product Status | Logic Type | Elements / Bits | Output Type | Current (mA) | Voltage Supply | Temp Range | Package | Packaging Type | Grade | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SN74ACT244PWRE4 | Texas Instruments | Discontinued | Buffer, Non-Inverting | 2 / 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Reel | Standard | 974 Pcs |
| SN74ACT244PWR | Texas Instruments | Active | Buffer, Non-Inverting | 2 / 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Cut Tape (CT) & Digi-Reel® | Standard | 45400 Pcs |
| SN74ACT241PWR | Texas Instruments | Active | Buffer, Non-Inverting | 2 / 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Cut Tape (CT) & Digi-Reel® | Standard | 2200 Pcs |
| SN74ACT244IPWRG4Q1 | Texas Instruments | Active | Buffer, Non-Inverting | 2 / 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Tape & Reel (TR) | Automotive (AEC-Q100) | 14906 Pcs |
| SN74ACT244IPWRQ1 | Texas Instruments | Active | Buffer, Non-Inverting | 2 / 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Tape & Reel (TR) | Automotive (AEC-Q100) | 2671 Pcs |
| 74ACT244MTCX | onsemi | Active | Buffer, Non-Inverting | 2 / 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Cut Tape (CT) & Digi-Reel® | Standard | 1994 Pcs |
| MC74ACT241DTR2G | onsemi | Active | Buffer, Non-Inverting | 2 / 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Tape & Reel (TR) | Standard | 20200 Pcs |
| MC74ACT244DTR2G | onsemi | Active | Buffer, Non-Inverting | 2 / 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Tape & Reel (TR) | Standard | 125100 Pcs |
Engineering Selection Recommendations
For direct replacement of the discontinued SN74ACT244PWRE4, the primary recommendation is SN74ACT244PWR from Texas Instruments. This part maintains identical electrical specifications and package configuration while offering active product status and significantly higher inventory availability (45400 units).
For applications requiring automotive-grade qualification, SN74ACT244IPWRG4Q1 and SN74ACT244IPWRQ1 are available with AEC-Q100 certification, maintaining all electrical and mechanical parameters while providing enhanced reliability for automotive environments.
Alternative manufacturer options from onsemi—specifically MC74ACT244DTR2G and 74ACT244MTCX—provide parametric equivalence with the original part. MC74ACT244DTR2G offers the highest inventory availability (125100 units) among all substitutes and is supplied in Tape & Reel packaging.
All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage protocols.
Frequently Asked Questions (FAQ)
Q: Can SN74ACT244PWR be used as a direct replacement for SN74ACT244PWRE4?
A: Yes. SN74ACT244PWR is the MFR recommended substitute. Both parts share identical electrical specifications (2 elements, 4 bits per element, 3-state output, 24mA output current, 4.5V–5.5V supply, -40°C to 85°C operating range) and the same 20-TSSOP package. The primary difference is product status (active vs. discontinued) and packaging format availability.
Q: What is the difference between SN74ACT244PWR and SN74ACT244IPWRG4Q1?
A: Both parts are electrically and mechanically identical. SN74ACT244IPWRG4Q1 carries automotive-grade qualification (AEC-Q100) and is supplied in Tape & Reel packaging, making it suitable for automotive applications requiring enhanced reliability screening. SN74ACT244PWR is standard-grade and available in Cut Tape and Digi-Reel formats.
Q: Are onsemi parts (MC74ACT244DTR2G, 74ACT244MTCX) fully compatible with the original Texas Instruments part?
A: Yes. These onsemi parts meet all electrical and mechanical specifications of the SN74ACT244PWRE4. They feature identical logic type, element count, bit configuration, output type, current ratings, voltage supply range, operating temperature, and 20-TSSOP package. Compatibility is determined by these parameters, which are equivalent across all listed substitutes.
Q: What packaging options are available for substitutes?
A: Substitutes are available in three packaging formats: Cut Tape (CT) & Digi-Reel® (SN74ACT244PWR, 74ACT244MTCX), Tape & Reel (TR) (SN74ACT244IPWRG4Q1, SN74ACT244IPWRQ1, MC74ACT241DTR2G, MC74ACT244DTR2G), and Reel (original SN74ACT244PWRE4). Selection depends on procurement volume and assembly line requirements.
Q: Do all substitutes maintain RoHS3 compliance?
A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, consistent with the original SN74ACT244PWRE4.
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