CD74HC541PW Equivalent & Substitute Parts

Part Overview

The CD74HC541PW is a non-inverting buffer logic IC manufactured by Texas Instruments, designed for 3-state output applications in the 74HC series. This component features 1 element with 8 bits per element, operating across a 2V to 6V supply voltage range with an operating temperature range of -55°C to 125°C. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain identical electrical and mechanical specifications for seamless circuit integration.

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	7.8mA, 7.8mA
Voltage - Supply	2V ~ 6V
Operating Temperature	-55°C ~ 125°C (TA)
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Series	74HC

Substitute Part Grouping Explanation

Substitute parts for the CD74HC541PW are classified based on strict adherence to the following electrical and mechanical parameters:

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
Package / Case: 20-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Base Product Number: 74HC541

Parts are grouped into three categories: Direct Manufacturer Alternatives (same manufacturer, different packaging), Manufacturer Recommended Alternatives (different manufacturers, active product status), and Parametric Equivalents (matching all electrical specifications).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Packaging	Operating Temperature	Current - Output High, Low	Voltage - Supply	Package / Case	Mounting Type
CD74HC541PW	Texas Instruments	Discontinued at DiGi Electronics	Tube	-55°C ~ 125°C	7.8mA, 7.8mA	2V ~ 6V	20-TSSOP	Surface Mount
CD74HC541PWR	Texas Instruments	Active	Tape & Reel (TR)	-55°C ~ 125°C	7.8mA, 7.8mA	2V ~ 6V	20-TSSOP	Surface Mount
74HC541PW,118	NXP Semiconductors	Active	Not specified	-40°C ~ 125°C	7.8mA, 7.8mA	2V ~ 6V	20-TSSOP	Surface Mount
MC74HC541ADTR2G	onsemi	Active	Tape & Reel (TR)	-55°C ~ 125°C	7.8mA, 7.8mA	2V ~ 6V	20-TSSOP	Surface Mount
MM74HC541MTC	Fairchild Semiconductor	Active	Not specified	-40°C ~ 85°C	7.8mA, 7.8mA	2V ~ 6V	20-TSSOP	Surface Mount
MM74HC541MTCX	Fairchild Semiconductor	Active	Not specified	-40°C ~ 85°C	7.8mA, 7.8mA	2V ~ 6V	20-TSSOP	Surface Mount
MC74HC541ADTG	onsemi	Active	Tube	-55°C ~ 125°C	7.8mA, 7.8mA	2V ~ 6V	20-TSSOP	Surface Mount

Engineering Selection Recommendations

All substitute parts listed maintain identical electrical specifications and package dimensions as the CD74HC541PW. Selection should be based on the following criteria:

Direct Replacement (Identical Specifications): CD74HC541PWR from Texas Instruments provides the same manufacturer continuity with active product status and identical operating temperature range (-55°C ~ 125°C). The primary difference is packaging format (Tape & Reel versus Tube).

Extended Temperature Range Compatibility: MC74HC541ADTR2G and MC74HC541ADTG from onsemi maintain the full -55°C ~ 125°C operating temperature range with active product status and ROHS3 compliance. MC74HC541ADTG is available in Tube packaging, matching the original CD74HC541PW format.

Reduced Temperature Range Alternatives: 74HC541PW,118 from NXP Semiconductors and MM74HC541MTC/MM74HC541MTCX from Fairchild Semiconductor operate within -40°C ~ 125°C and -40°C ~ 85°C ranges respectively. These are suitable for applications not requiring the full -55°C lower temperature specification.

All substitute parts are RoHS3 compliant and maintain identical electrical performance characteristics (7.8mA output current, 2V ~ 6V supply voltage, 3-state output configuration).

Frequently Asked Questions (FAQ)

Q: Can CD74HC541PWR be used as a direct replacement for CD74HC541PW?

A: Yes. CD74HC541PWR is electrically and mechanically identical to CD74HC541PW. Both are manufactured by Texas Instruments, operate across -55°C ~ 125°C, and use the 20-TSSOP package. The difference is packaging format: CD74HC541PWR is supplied in Tape & Reel format while CD74HC541PW is supplied in Tube format.

Q: What is the difference between MC74HC541ADTG and MC74HC541ADTR2G?

A: Both parts are manufactured by onsemi with identical electrical specifications and operating temperature range (-55°C ~ 125°C). The primary difference is packaging: MC74HC541ADTG is supplied in Tube format, while MC74HC541ADTR2G is supplied in Tape & Reel format.

Q: Are Fairchild Semiconductor parts (MM74HC541MTC, MM74HC541MTCX) suitable replacements?

A: These parts are suitable for applications where the operating temperature range of -40°C ~ 85°C is acceptable. They maintain identical electrical specifications and 20-TSSOP package dimensions. Applications requiring operation below -40°C or above 85°C should use alternatives with extended temperature ranges.

Q: What does the 20-TSSOP package specification mean?

A: 20-TSSOP refers to a 20-pin Thin Shrink Small Outline Package with a width of 0.173 inches (4.40mm). All substitute parts use this identical package, ensuring mechanical compatibility with existing PCB layouts and sockets.

Q: Are all substitute parts RoHS compliant?

A: CD74HC541PWR, MC74HC541ADTR2G, MC74HC541ADTG, and MC74HC541PW,118 are confirmed ROHS3 compliant. Fairchild Semiconductor parts (MM74HC541MTC, MM74HC541MTCX) do not specify RoHS status in the provided data.

Q: What is the significance of the 3-State output configuration?

A: The 3-State output allows the buffer to operate in three states: logic high, logic low, or high-impedance (disabled). This configuration enables multiple drivers on a shared bus without contention, making these parts suitable for multiplexed data bus applications.

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