CD74HC259M Equivalent & Substitute Parts

Part Overview

The CD74HC259M is a D-Type addressable latch IC manufactured by Texas Instruments, designed for 1:8 multiplexing applications in 16-SOIC surface mount packaging. This component is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. The 74HC259 logic family provides standardized pin-compatible alternatives across multiple manufacturers, all meeting the same functional and electrical specifications for direct circuit replacement.

Key Parameters

Parameter	Value
Logic Type	D-Type, Addressable
Circuit Configuration	1 Channel 1:8
Output Type	Standard
Voltage Supply Range	2V to 6V
Propagation Delay	13ns to 25ns
Output Current (High/Low)	5.2mA / 5.2mA
Operating Temperature	-55°C to 125°C (standard) / -40°C to 125°C (Nexperia)
Package Type	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD74HC259M is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Logic family: 74HC series (D-Type, Addressable)
Circuit configuration: 1:8 multiplexing
Package: 16-SOIC surface mount
Voltage supply: 2V to 6V
Output current: 5.2mA (both high and low)
Moisture sensitivity: MSL 1
RoHS compliance: ROHS3

Acceptable Parameter Variations:

Propagation delay: 13ns to 25ns (all substitutes within this range)
Operating temperature: -40°C to -55°C minimum; 125°C maximum
Packaging format: Tape & Reel (TR), Cut Tape (CT), or Tube
Product status: Active or Obsolete (electrical equivalence maintained)
Manufacturer: Texas Instruments, onsemi, Nexperia USA Inc.

All listed substitute parts maintain identical pin configuration, functional behavior, and electrical performance within the specified parameter ranges.

Parameter Comparison

Part Number	Manufacturer	Product Status	Propagation Delay (ns)	Operating Temp (°C)	Packaging	Grade
CD74HC259M	Texas Instruments	Discontinued	13	-55 to 125	Tube	Standard
CD74HC259M96	Texas Instruments	Active	13	-55 to 125	Tape & Reel	Standard
MC74HC259ADR2G	onsemi	Active	25	-55 to 125	Tape & Reel	Standard
74HC259D,653	Nexperia USA Inc.	Active	17	-40 to 125	Cut Tape & Digi-Reel	Standard
74HC259D-Q100,118	Nexperia USA Inc.	Active	17	-40 to 125	Tape & Reel	Automotive (AEC-Q100)
MC74HC259ADG	onsemi	Obsolete	25	-55 to 125	Tube	Standard
NLVHC259ADR2G	onsemi	Obsolete	25	-55 to 125	Tape & Reel	Automotive (AEC-Q100)

Engineering Selection Recommendations

For Active Production (Recommended Primary Choices):

CD74HC259M96 is the direct equivalent with identical propagation delay (13ns) and temperature range (-55°C to 125°C). This part maintains full compatibility with the original CD74HC259M specification and is currently in active production status with 1537 units in stock.

74HC259D,653 (Nexperia) offers active production status with moderate propagation delay (17ns) and is available in Cut Tape & Digi-Reel packaging. Operating temperature minimum is -40°C, which is acceptable for most industrial applications.

For Automotive Applications:

74HC259D-Q100,118 is qualified to AEC-Q100 automotive standards with active production status. Propagation delay of 17ns and operating temperature range of -40°C to 125°C meet automotive-grade requirements.

For Legacy System Maintenance:

MC74HC259ADR2G and NLVHC259ADR2G remain available despite obsolete status, with propagation delay of 25ns. These parts are suitable for replacement in existing systems where timing margins accommodate the longer delay.

Frequently Asked Questions (FAQ)

Q: Can CD74HC259M96 be used as a direct replacement for CD74HC259M?

A: Yes. CD74HC259M96 is electrically and functionally identical to CD74HC259M. Both are manufactured by Texas Instruments with 13ns propagation delay and -55°C to 125°C operating range. The primary difference is packaging format: CD74HC259M96 is supplied in Tape & Reel format while CD74HC259M was supplied in Tube format.

Q: What is the impact of propagation delay differences between substitute parts?

A: Propagation delay ranges from 13ns (Texas Instruments parts) to 25ns (onsemi parts). All values fall within the 74HC logic family specification. Selection depends on circuit timing requirements. Faster parts (13-17ns) are preferred for time-critical applications; slower parts (25ns) are acceptable where timing margins are adequate.

Q: Are Nexperia 74HC259D parts compatible with the original CD74HC259M?

A: Yes, with one consideration. Nexperia parts have a minimum operating temperature of -40°C versus -55°C for the original. For applications requiring operation below -40°C, use Texas Instruments or onsemi alternatives. Pin configuration and electrical performance are identical.

Q: What is the difference between standard and automotive-grade versions?

A: Automotive-grade parts (74HC259D-Q100,118 and NLVHC259ADR2G) carry AEC-Q100 qualification, indicating compliance with automotive reliability and testing standards. Use automotive-grade parts only in automotive applications where this certification is required.

Q: Can obsolete parts (MC74HC259ADG, NLVHC259ADR2G) be used in new designs?

A: Obsolete parts are electrically equivalent but not recommended for new production designs due to uncertain long-term availability. Use active production alternatives (CD74HC259M96, 74HC259D,653, MC74HC259ADR2G) for new designs.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel, Cut Tape, Digi-Reel, and Tube packaging formats contain identical die and electrical specifications. Packaging selection is based on assembly process requirements and inventory management, not performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message