N74F253D,623 Equivalent & Substitute Parts

Part Overview

The N74F253D,623 is a 2 x 4:1 multiplexer logic integrated circuit manufactured by NXP USA Inc. in a 16-SOIC surface mount package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and production continuity. Substitute parts maintain identical functional specifications and electrical characteristics while offering improved availability and product status through alternative manufacturers.

Key Parameters

Parameter	Specification
Type	Multiplexer
Circuit Configuration	2 x 4:1
Independent Circuits	1
Output Current - High	3mA
Output Current - Low	24mA
Voltage Supply	4.5V ~ 5.5V (Single Supply)
Operating Temperature Range	0°C ~ 70°C
Package Type	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Series	74F
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the N74F253D,623 are qualified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on the following key parameters:

Functional Type: 2 x 4:1 Multiplexer configuration
Electrical Characteristics: Output current ratings (3mA high, 24mA low), supply voltage range (4.5V ~ 5.5V), and operating temperature range (0°C ~ 70°C)
Package Compatibility: 16-SOIC surface mount package with identical physical dimensions (0.154", 3.90mm width)
Series Classification: 74F logic family
Compliance Standards: ROHS3 compliance and MSL Level 1 rating

All substitute parts listed maintain 100% parametric equivalence across these criteria, enabling direct functional replacement in circuit designs.

Parameter Comparison

Parameter	N74F253D,623 (NXP)	SN74F253D (TI)	SN74F253DR (TI)	SN74F253DRG4 (TI)
Manufacturer	NXP USA Inc.	Texas Instruments	Texas Instruments	Texas Instruments
Type	Multiplexer 2 x 4:1	Multiplexer 2 x 4:1	Multiplexer 2 x 4:1	Multiplexer 2 x 4:1
Circuit Configuration	2 x 4:1	2 x 4:1	2 x 4:1	2 x 4:1
Output Current - High	3mA	3mA	3mA	3mA
Output Current - Low	24mA	24mA	24mA	24mA
Voltage Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Series	74F	74F	74F	74F
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Last Time Buy	Active	Discontinued at DiGi Electronics
Packaging Format	Standard	Tube	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Recommendation: SN74F253DR

The SN74F253DR is the optimal substitute for the N74F253D,623. This part maintains active product status with Texas Instruments, ensuring long-term availability and supply chain stability. The Tape & Reel packaging format supports high-volume manufacturing processes. Full parametric equivalence across electrical specifications, package dimensions, and compliance certifications (ROHS3, MSL Level 1) enables direct replacement without circuit redesign.

Secondary Recommendation: SN74F253D

The SN74F253D offers equivalent electrical and mechanical specifications with Last Time Buy status. This part is suitable for applications where tube packaging is acceptable. Availability is currently higher than the primary recommendation, making it viable for near-term production requirements.

Alternative: SN74F253DRG4

The SN74F253DRG4 maintains full parametric equivalence but carries discontinued status at DiGi Electronics. This part is suitable only when alternative supply channels are confirmed and inventory is verified through secondary distributors.

Frequently Asked Questions (FAQ)

Q: Can SN74F253DR be used as a direct replacement for N74F253D,623?

A: Yes. The SN74F253DR is a direct functional and electrical equivalent. Both parts share identical 2 x 4:1 multiplexer configuration, output current ratings (3mA/24mA), supply voltage range (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), and 16-SOIC package dimensions. No circuit modifications are required.

Q: What is the difference between the packaging formats (Tube vs. Tape & Reel)?

A: Tube packaging is suitable for manual assembly and small-volume production. Tape & Reel packaging is optimized for automated pick-and-place assembly in high-volume manufacturing. Both formats contain identical components with equivalent electrical performance. Selection depends on production methodology and volume requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (SN74F253D, SN74F253DR, SN74F253DRG4) maintain ROHS3 compliance and MSL Level 1 rating, matching the original N74F253D,623 specification.

Q: Why is the N74F253D,623 classified as obsolete?

A: The N74F253D,623 has reached end-of-life status with NXP USA Inc. Substitute parts from Texas Instruments provide equivalent functionality with improved product status and availability.

Q: Can multiple substitute parts be used interchangeably in the same design?

A: Yes. All substitute parts listed maintain identical electrical characteristics and package specifications, enabling interchangeable use within the same circuit design.

Q: What is the significance of MSL Level 1?

A: MSL Level 1 indicates unlimited moisture sensitivity level, meaning the component requires no special moisture control during storage, handling, or assembly. This simplifies supply chain management and reduces production constraints.

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