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74HC541DB,118 Equivalent & Substitute Parts
Part Overview
The 74HC541DB,118 is a non-inverting buffer logic IC manufactured by Nexperia USA Inc., designed for 3-state output applications in 20-SSOP surface mount packaging. This component functions as a single-element, 8-bit buffer with 3-state output capability, operating across a 2V to 6V supply voltage range. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74HC541DB,118 |
| Manufacturer | Nexperia USA Inc. |
| Series | 74HC |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High, Low | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 20-SSOP (0.209", 5.30mm Width) |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the 74HC541DB,118 is determined by the following critical parameters:
- Logic Function: Buffer, Non-Inverting with 1 Element and 8 Bits per Element
- Output Configuration: 3-State output
- Electrical Specifications: Output current (7.8mA high/low), supply voltage range (2V ~ 6V)
- Thermal Performance: Operating temperature range (-40°C to 125°C minimum)
- Package Compatibility: 20-SSOP or 20-TSSOP surface mount packages
- Compliance: ROHS3 compliance and MSL rating
Substitute parts are grouped into two categories based on package type:
Category 1 - Same Package (20-SSOP): Direct mechanical and electrical replacement with identical footprint.
Category 2 - Alternative Package (20-TSSOP): Functionally equivalent with different package dimensions (0.173" vs 0.209" width). Requires PCB layout verification for pin-to-pin compatibility.
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Output Type | Current (mA) | Supply Voltage | Temp Range (°C) | Package | Product Status |
|---|---|---|---|---|---|---|---|---|
| 74HC541DB,118 | Nexperia USA Inc. | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 125 | 20-SSOP | Obsolete |
| 74HC541PW,118 | NXP Semiconductors | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 125 | 20-TSSOP | Active |
| CD74HC541PW | Texas Instruments | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -55 ~ 125 | 20-TSSOP | Discontinued at DiGi Electronics |
| CD74HC541PWR | Texas Instruments | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -55 ~ 125 | 20-TSSOP | Active |
| MM74HC541MTC | Fairchild Semiconductor | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-TSSOP | Active |
| MM74HC541MTCX | Fairchild Semiconductor | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-TSSOP | Active |
| SN74HC541DBR | Texas Instruments | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-SSOP | Active |
| SN74HC541PW | Texas Instruments | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-TSSOP | Discontinued at DiGi Electronics |
| SN74HC541PWR | Texas Instruments | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-TSSOP | Active |
| SN74HC541PWT | Texas Instruments | Buffer, Non-Inverting | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-TSSOP | Discontinued at DiGi Electronics |
Engineering Selection Recommendations
For Direct Replacement (20-SSOP Package)
SN74HC541DBR from Texas Instruments is the primary active substitute in the original 20-SSOP package. This part maintains identical package dimensions and pin configuration, eliminating PCB layout modifications. The part carries ROHS3 compliance and MSL rating equivalent to the original. Product status is active with established supply chain availability.
For Alternative Package Selection (20-TSSOP)
When package migration is acceptable, multiple active alternatives exist:
74HC541PW,118 from NXP Semiconductors provides the most direct functional equivalence with active product status and full temperature range coverage (-40°C to 125°C). This part is the base product number variant in TSSOP packaging.
CD74HC541PWR from Texas Instruments offers extended lower temperature rating (-55°C) with active status and tape & reel packaging for production volumes. ROHS3 compliance is confirmed.
SN74HC541PWR from Texas Instruments provides active status with standard temperature range (-40°C to 85°C) and established supply availability through cut tape and Digi-Reel packaging options.
MM74HC541MTC and MM74HC541MTCX from Fairchild Semiconductor are active alternatives with high inventory availability (58,999 and 4,900 units respectively). Temperature range is -40°C to 85°C. These parts are suitable for applications not requiring the extended upper temperature limit of 125°C.
Compliance Considerations
All recommended substitutes maintain ROHS3 compliance and MSL Level 1 (unlimited moisture sensitivity). REACH status is unaffected across all alternatives. ECCN classification remains EAR99 for all parts.
Frequently Asked Questions (FAQ)
Q: Can I use a 20-TSSOP package part as a direct replacement for the 20-SSOP original?
A: No, not without PCB layout modification. While electrically equivalent, the 20-TSSOP package (0.173" width) differs from 20-SSOP (0.209" width). Pin spacing and footprint are different. PCB redesign is required for mechanical fit.
Q: What is the difference between 74HC541PW,118 and SN74HC541PWR?
A: Both are 20-TSSOP packages with identical electrical specifications and output current ratings. The primary difference is manufacturer (NXP vs Texas Instruments) and operating temperature range. 74HC541PW,118 supports -40°C to 125°C, while SN74HC541PWR supports -40°C to 85°C. Select based on your application's thermal requirements.
Q: Is the CD74HC541PWR suitable for new designs?
A: Yes. CD74HC541PWR is active status with ROHS3 compliance and extended lower temperature rating (-55°C to 125°C). It is suitable for new designs requiring the expanded temperature range. Tape & reel packaging is available for production quantities.
Q: Why are some parts listed as "Discontinued at DiGi Electronics"?
A: Product status reflects availability through specific distributors. Parts marked "Discontinued at DiGi Electronics" may remain available through other channels or manufacturers. Verify current availability with your supply chain before design commitment.
Q: Can I substitute MM74HC541MTC if my application operates above 85°C?
A: No. MM74HC541MTC maximum operating temperature is 85°C. For applications requiring operation up to 125°C, select 74HC541PW,118 or CD74HC541PWR instead.
Q: Are all substitutes ROHS3 compliant?
A: Not all listed parts explicitly state ROHS3 compliance in the provided data. Verify ROHS3 status with the manufacturer or distributor for parts where compliance is not documented. CD74HC541PWR, SN74HC541DBR, SN74HC541PW, SN74HC541PWR, and SN74HC541PWT are confirmed ROHS3 compliant.
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