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74HC259N,652 Equivalent & Substitute Parts
Part Overview
The 74HC259N,652 is an 8-bit addressable latch IC manufactured by NXP USA Inc., designed for D-Type addressable logic applications with a 1:8 circuit configuration. This component operates across a 2V to 6V supply voltage range and is housed in a 16-DIP package suitable for through-hole mounting. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance, design updates, and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74HC259N,652 |
| Manufacturer | NXP USA Inc. |
| Category | Logic |
| Series | 74HC |
| Logic Type | D-Type, Addressable |
| Circuit Configuration | 1:8 |
| Output Type | Standard |
| Voltage - Supply | 2V ~ 6V |
| Package / Case | 16-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Operating Temperature | -40°C ~ 125°C |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the 74HC259N,652 are qualified based on the following critical parameters that determine functional and mechanical compatibility:
- Logic Type & Circuit Configuration: D-Type, Addressable 1:8 topology must be identical
- Supply Voltage Range: 2V ~ 6V operating window
- Package / Case: 16-DIP (0.300", 7.62mm) form factor for through-hole mounting
- Output Type: Standard output configuration
- Series Compatibility: 74HC logic family
- Compliance Standards: ROHS3 compliance and REACH unaffected status
The identified substitute parts CD74HC259E and SN74HC259N meet all these criteria and share the same base product number (74HC259), confirming functional equivalence within the 74HC addressable latch family.
Parameter Comparison
| Parameter | 74HC259N,652 (NXP) | CD74HC259E (TI) | SN74HC259N (TI) |
|---|---|---|---|
| Manufacturer | NXP USA Inc. | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Active | Active |
| Logic Type | D-Type, Addressable | D-Type, Addressable | D-Type, Addressable |
| Circuit Configuration | 1:8 | 1:8 | 1:8 |
| Output Type | Standard | Standard | Standard |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V |
| Independent Circuits | 1 | 1 | 1 |
| Current - Output High, Low | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA |
| Delay Time - Propagation | 17ns | 13ns | 13ns |
| Operating Temperature | -40°C ~ 125°C | -55°C ~ 125°C | -40°C ~ 85°C |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Both CD74HC259E and SN74HC259N are active production alternatives to the obsolete 74HC259N,652. Selection between these substitutes should be based on the following factors:
CD74HC259E (Texas Instruments): This part offers the widest operating temperature range (-55°C ~ 125°C) and the fastest propagation delay (13ns). It is suitable for applications requiring extended low-temperature operation or performance-critical timing requirements. The part is supplied in tube packaging.
SN74HC259N (Texas Instruments): This part maintains the original operating temperature lower bound (-40°C) and achieves the same 13ns propagation delay as the CD74HC259E. It is appropriate for standard industrial temperature range applications. The part is supplied in tube packaging.
Both substitutes maintain full ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original part. The propagation delay improvement (13ns versus 17ns) in both alternatives provides enhanced timing performance compared to the original NXP part.
Frequently Asked Questions (FAQ)
Q: Can CD74HC259E and SN74HC259N be used interchangeably with 74HC259N,652?
A: Yes, both parts are functionally equivalent within the 74HC addressable latch family. They share identical logic type, circuit configuration (1:8), output type, supply voltage range (2V ~ 6V), and 16-DIP package specifications. Pin-for-pin compatibility is maintained.
Q: What is the difference in propagation delay between the original part and the substitutes?
A: The 74HC259N,652 has a propagation delay of 17ns, while both CD74HC259E and SN74HC259N operate at 13ns. This represents a 24% improvement in switching speed with the substitute parts.
Q: Are there temperature range considerations when selecting between the two substitutes?
A: The CD74HC259E supports -55°C to 125°C, while the SN74HC259N supports -40°C to 85°C. For applications requiring extended low-temperature operation below -40°C, the CD74HC259E is the appropriate choice. For standard industrial applications within -40°C to 85°C, either part is suitable.
Q: Do the substitute parts maintain the same packaging and mounting specifications?
A: Yes, both CD74HC259E and SN74HC259N are supplied in 16-DIP (0.300", 7.62mm) packages with through-hole mounting, identical to the original 74HC259N,652. PCB layout and mechanical integration remain unchanged.
Q: Are compliance certifications maintained with these substitutes?
A: Yes, both substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original part.
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