N74F543D,623 Equivalent & Substitute Parts

Part Overview

The N74F543D,623 is a non-inverting transceiver logic IC manufactured by NXP USA Inc., designed for 8-bit data transmission with 3-state output capability. This component operates within the 74F logic family and is rated for supply voltages between 4.5V and 5.5V with an operating temperature range of 0°C to 70°C.

The N74F543D,623 is classified as obsolete, which necessitates identification of equivalent substitute components for new designs or system maintenance. Substitute parts must maintain identical electrical characteristics and mechanical compatibility to ensure seamless integration into existing applications.

Key Parameters

Parameter	Value
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High	3mA, 24mA
Current - Output Low	15mA, 64mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Package / Case	24-SOIC (0.295", 7.50mm Width)
Series	74F
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the N74F543D,623 are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution validity:

Critical Matching Parameters:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 1
Number of Bits per Element: 8
Output Type: 3-State
Current ratings (Output High/Low): 3mA, 24mA / 15mA, 64mA
Voltage Supply Range: 4.5V ~ 5.5V
Operating Temperature: 0°C ~ 70°C
Package / Case: 24-SOIC (0.295", 7.50mm Width)
Series: 74F
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

MFR Recommended Substitutes: Parts explicitly recommended by the original or alternative manufacturers, maintaining full electrical and mechanical compatibility with identical packaging specifications.

Parametric Equivalents: Parts meeting all critical electrical parameters and mechanical requirements, with variations in product status or packaging format (Tape & Reel vs. Tube).

Parameter Comparison

Parameter	N74F543D,623 (NXP)	SN74F543DW (TI)	SN74F543DWR (TI)
Manufacturer	NXP USA Inc.	Texas Instruments	Texas Instruments
Logic Type	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting
Number of Elements	1	1	1
Number of Bits per Element	8	8	8
Output Type	3-State	3-State	3-State
Current - Output High, Low	3mA, 24mA; 15mA, 64mA	3mA, 24mA; 15mA, 64mA	3mA, 24mA; 15mA, 64mA
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	24-SOIC (0.295", 7.50mm Width)	24-SOIC (0.295", 7.50mm Width)	24-SOIC (0.295", 7.50mm Width)
Series	74F	74F	74F
Product Status	Obsolete	Last Time Buy	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

SN74F543DW (Texas Instruments): This MFR recommended substitute is classified as Last Time Buy status. It provides full electrical and mechanical compatibility with the N74F543D,623, with identical packaging in 24-SOIC format. This part is suitable for applications requiring immediate substitution with established supply availability.

SN74F543DWR (Texas Instruments): This parametric equivalent maintains all critical electrical specifications and mechanical compatibility. The primary distinction is the Tape & Reel packaging format, which differs from the tube packaging of the N74F543D,623. This part carries Active product status, indicating ongoing manufacturer support and long-term availability. The SN74F543DWR is the preferred selection for new designs and applications requiring sustained component supply.

Both Texas Instruments substitutes are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Selection between SN74F543DW and SN74F543DWR should be based on packaging requirements and supply chain considerations specific to the application.

Frequently Asked Questions (FAQ)

Q: Can SN74F543DW and SN74F543DWR be used interchangeably with N74F543D,623?

A: Both parts are electrically and mechanically equivalent to the N74F543D,623. The primary difference is packaging format: SN74F543DW is supplied in Tube packaging, while SN74F543DWR is supplied in Tape & Reel format. Selection depends on assembly process requirements and procurement specifications.

Q: What is the significance of the product status difference between the substitute parts?

A: SN74F543DW carries Last Time Buy status, indicating limited future availability. SN74F543DWR is Active status, meaning the manufacturer continues production and supports long-term supply. For new designs, SN74F543DWR is the recommended choice.

Q: Are there any compliance or regulatory differences between the main part and substitutes?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited). No compliance or regulatory barriers exist for substitution.

Q: Do the substitute parts maintain the same electrical performance characteristics?

A: Yes. Both SN74F543DW and SN74F543DWR maintain identical output current ratings (3mA, 24mA for high; 15mA, 64mA for low), supply voltage range (4.5V ~ 5.5V), and operating temperature specifications (0°C ~ 70°C) as the N74F543D,623.

Q: What packaging considerations should be evaluated when selecting a substitute?

A: The N74F543D,623 and SN74F543DW use Tube packaging, suitable for manual assembly or lower-volume production. The SN74F543DWR uses Tape & Reel packaging, optimized for automated pick-and-place assembly processes. Verify compatibility with your assembly equipment and procurement workflow before final selection.

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