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74ACTQ541MTCX Equivalent & Substitute Parts
Part Overview
The 74ACTQ541MTCX is a non-inverting buffer logic IC manufactured by onsemi, designed for 8-bit buffering applications with 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-TSSOP surface mount package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| 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 | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution for the 74ACTQ541MTCX is determined by the following critical parameters: logic type (non-inverting buffer), functional configuration (1 element, 8 bits per element), output type (3-state), electrical performance (24mA output current, 4.5V–5.5V supply), and physical form factor (20-pin surface mount package). Substitute parts are grouped into two categories based on packaging configuration and product status:
Parametric Equivalents (Active Status): Parts that maintain identical electrical specifications and package footprint but differ in packaging format (tape & reel versus tube).
Similar Parts (Cross-Manufacturer): Parts from alternative manufacturers that meet the same functional and electrical requirements but may have minor package variations or extended operating temperature ranges.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Logic Type | Output Current (mA) | Supply Voltage | Operating Temp (°C) | Package | Packaging Format | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| 74ACTQ541MTCX | onsemi | Obsolete | Buffer, Non-Inverting | 24, 24 | 4.5V ~ 5.5V | -40 ~ 85 | 20-TSSOP | Tape & Reel (TR) | Not Specified |
| 74ACT541MTCX | onsemi | Active | Buffer, Non-Inverting | 24, 24 | 4.5V ~ 5.5V | -40 ~ 85 | 20-TSSOP | Tape & Reel (TR) | ROHS3 Compliant |
| MC74ACT541DTR2G | onsemi | Active | Buffer, Non-Inverting | 24, 24 | 4.5V ~ 5.5V | -40 ~ 85 | 20-TSSOP | Tape & Reel (TR) | ROHS3 Compliant |
| MC74ACT541DTG | onsemi | Active | Buffer, Non-Inverting | 24, 24 | 4.5V ~ 5.5V | -40 ~ 85 | 20-TSSOP | Tube | Not Specified |
| CD74ACT541SM96 | Texas Instruments | Active | Buffer, Non-Inverting | 24, 24 | 4.5V ~ 5.5V | -55 ~ 125 | 20-SSOP | Tape & Reel (TR) | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes (Recommended for Direct Replacement):
74ACT541MTCX and MC74ACT541DTR2G are the preferred substitutes for the obsolete 74ACTQ541MTCX. Both parts are manufactured by onsemi, maintain identical electrical specifications and 20-TSSOP package footprint, and carry active product status with ROHS3 compliance certification. These parts provide direct functional and mechanical compatibility with existing PCB designs.
Secondary Substitute (Packaging Variation):
MC74ACT541DTG is functionally equivalent but supplied in tube packaging rather than tape & reel format. This part is suitable for applications where packaging format does not impose procurement or assembly constraints.
Cross-Manufacturer Alternative (Extended Temperature Range):
CD74ACT541SM96 from Texas Instruments provides equivalent functionality with an extended operating temperature range (-55°C to 125°C versus -40°C to 85°C). This part uses a 20-SSOP package, which differs slightly in physical dimensions from the 20-TSSOP package. PCB layout verification is required to confirm mechanical compatibility. This part is suitable for applications requiring extended temperature performance and is ROHS3 compliant.
Frequently Asked Questions (FAQ)
Q: Can 74ACT541MTCX directly replace 74ACTQ541MTCX?
A: Yes. Both parts share identical electrical specifications, output current ratings, supply voltage range, operating temperature range, and 20-TSSOP package footprint. The primary difference is product status (active versus obsolete) and RoHS compliance certification on the substitute.
Q: What is the difference between MC74ACT541DTR2G and MC74ACT541DTG?
A: Both parts are electrically and functionally identical. The difference is packaging format: MC74ACT541DTR2G is supplied in tape & reel format, while MC74ACT541DTG is supplied in tube format. Selection depends on assembly line requirements and procurement preferences.
Q: Is CD74ACT541SM96 a direct replacement?
A: CD74ACT541SM96 is functionally equivalent but uses a 20-SSOP package instead of 20-TSSOP. The package footprint differs in width (5.30mm versus
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