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SN74ALS541DBRG4 Equivalent & Substitute Parts
Part Overview
The SN74ALS541DBRG4 is a non-inverting buffer logic integrated circuit manufactured by Texas Instruments, designed for 8-bit buffering applications with 3-state output capability. This device operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-SSOP surface mount package. The part is currently discontinued at DiGi Electronics, making identification of equivalent substitute components essential for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SN74ALS541DBRG4 |
| Manufacturer | Texas Instruments |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High, Low | 15mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Package / Case | 20-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the SN74ALS541DBRG4 is determined by strict equivalence across the following critical parameters:
- Logic function: Non-inverting buffer with 1 element, 8 bits per element
- Output configuration: 3-state output capability
- Electrical specifications: 15mA output high current, 24mA output low current
- Supply voltage range: 4.5V to 5.5V
- Package type: 20-SSOP surface mount
- Physical dimensions: 0.209" width, 5.30mm width
- Compliance certifications: ROHS3 Compliant, REACH Unaffected
The SN74ALS541DBR meets all these criteria and serves as a direct functional equivalent. The primary distinction between these parts is packaging format and product status.
Parameter Comparison
| Parameter | SN74ALS541DBRG4 (Main Part) | SN74ALS541DBR (Substitute) |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Logic Type | Buffer, Non-Inverting | Buffer, Non-Inverting |
| Number of Elements | 1 | 1 |
| Number of Bits per Element | 8 | 8 |
| Output Type | 3-State | 3-State |
| Current - Output High, Low | 15mA, 24mA | 15mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Package / Case | 20-SSOP (0.209", 5.30mm Width) | 20-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Discontinued at DiGi Electronics | Active |
| Packaging Format | Digi-Reel® | Cut Tape (CT) & Digi-Reel® |
Engineering Selection Recommendations
The SN74ALS541DBR is a direct substitute for the SN74ALS541DBRG4 based on identical electrical and mechanical specifications. Both parts share the same base product number (74ALS541), logic function, pin configuration, and performance characteristics. The SN74ALS541DBR maintains active product status with Texas Instruments and is available in higher inventory quantities, providing supply chain continuity.
Both parts comply with ROHS3 and REACH requirements, ensuring regulatory alignment for applications requiring environmental compliance. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage and handling.
Frequently Asked Questions (FAQ)
Q: Can the SN74ALS541DBR be used as a direct replacement for the SN74ALS541DBRG4?
A: Yes. Both parts are electrically and mechanically identical. They share the same logic function, pin configuration, output specifications, supply voltage range, and 20-SSOP package dimensions. The primary difference is product status and packaging format availability.
Q: What is the difference between the SN74ALS541DBRG4 and SN74ALS541DBR?
A: The SN74ALS541DBRG4 is discontinued at DiGi Electronics and supplied in Digi-Reel® format. The SN74ALS541DBR is an active product available in both Cut Tape (CT) and Digi-Reel® packaging options. All electrical and functional specifications are identical.
Q: Are there any PCB layout or thermal considerations when substituting these parts?
A: No layout or thermal modifications are required. Both parts use the identical 20-SSOP package with matching pin assignments and physical dimensions (0.209" width, 5.30mm width).
Q: Do both parts meet the same compliance standards?
A: Yes. Both the SN74ALS541DBRG4 and SN74ALS541DBR are ROHS3 Compliant and REACH Unaffected, with identical MSL ratings of 1 (Unlimited).
Q: What is the operating temperature range for these parts?
A: Both parts operate within the range of 0°C to 70°C (TA).
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