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74HC240D,652 Equivalent & Substitute Parts
Part Overview
The 74HC240D,652 is a logic buffer IC manufactured by Nexperia USA Inc., featuring inverting 2-element, 4-bit per element architecture with 3-state output capability. This component operates across a 2V to 6V supply voltage range and is housed in a 20-SO surface mount package. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74HC240D,652 |
| Manufacturer | Nexperia USA Inc. |
| Logic Type | Buffer, Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Output Type | 3-State |
| Current - Output High, Low | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the 74HC240D,652 is determined by strict equivalence across the following critical parameters:
- Logic Type: Buffer, Inverting
- Number of Elements: 2
- Number of Bits per Element: 4
- Output Type: 3-State
- Current - Output High, Low: 7.8mA, 7.8mA
- Voltage - Supply: 2V ~ 6V
- Package / Case: 20-SOIC (0.295", 7.50mm Width)
- Mounting Type: Surface Mount
Substitute parts are categorized as follows:
Upgrade Substitutes (Enhanced specifications, direct functional replacement):
- CD74HC240M (Texas Instruments)
- CD74HC240M96 (Texas Instruments)
Similar Substitutes (Equivalent electrical performance, alternative manufacturers):
- MC74HC240ADWG (onsemi)
- MC74HC240ADWR2G (onsemi)
- MM74HC240WM (Fairchild Semiconductor)
- MM74HC240WMX (Fairchild Semiconductor)
- SN74HC240DW (Texas Instruments)
- SN74HC240DWR (Texas Instruments)
Parametric Equivalents (Identical electrical and mechanical specifications):
- 74HC240D,652 (NXP Semiconductors)
- 74HC240D-Q100,118 (NXP USA Inc.)
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Logic Type | Elements | Bits/Element | Output Type | Current (mA) | Supply Voltage | Temp Range (°C) | Package | Product Status | MSL |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HC240D,652 | Nexperia USA Inc. | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -40 ~ 125 | 20-SOIC | Obsolete | 1 |
| CD74HC240M | Texas Instruments | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -55 ~ 125 | 20-SOIC | Last Time Buy | 1 |
| CD74HC240M96 | Texas Instruments | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -55 ~ 125 | 20-SOIC | Active | 1 |
| MC74HC240ADWG | onsemi | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -55 ~ 125 | 20-SOIC | Active | 3 |
| MC74HC240ADWR2G | onsemi | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -55 ~ 125 | 20-SOIC | Active | 3 |
| MM74HC240WM | Fairchild Semiconductor | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Active | — |
| MM74HC240WMX | Fairchild Semiconductor | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Active | — |
| SN74HC240DW | Texas Instruments | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Discontinued at DiGi Electronics | 1 |
| SN74HC240DWR | Texas Instruments | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Active | 1 |
| 74HC240D,652 | NXP Semiconductors | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -40 ~ 125 | 20-SOIC | Active | 1 |
| 74HC240D-Q100,118 | NXP USA Inc. | Buffer, Inverting | 2 | 4 | 3-State | 7.8/7.8 | 2V ~ 6V | -40 ~ 125 | 20-SOIC | Active | — |
Engineering Selection Recommendations
For Active Production Requirements:
CD74HC240M96 (Texas Instruments) is the primary recommended substitute. This part maintains full electrical and mechanical compatibility with the 74HC240D,652 while offering active product status and extended operating temperature range (-55°C to 125°C). The part is available in Tape & Reel packaging with substantial inventory.
SN74HC240DWR (Texas Instruments) provides an alternative with active status and identical electrical specifications. This part is available in Cut Tape and Digi-Reel packaging formats.
For Extended Temperature Applications:
CD74HC240M and CD74HC240M96 both support the extended temperature range of -55°C to 125°C, compared to the original part's -40°C to 125°C specification. These parts are suitable for applications requiring enhanced low-temperature performance.
For Automotive or Qualified Applications:
74HC240D-Q100,118 (NXP USA Inc.) carries AEC-Q100 automotive qualification and maintains identical electrical specifications to the original part. This variant is appropriate for automotive-grade applications.
For Parametric Equivalence:
74HC240D,652 (NXP Semiconductors) provides direct parametric equivalence with active product status, making it a direct replacement option with no design modifications required.
Moisture Sensitivity Considerations:
The original 74HC240D,652 carries MSL 1 (Unlimited). Most substitute parts maintain this classification. MC74HC240ADWG and MC74HC240ADWR2G carry MSL 3 (168 Hours), requiring controlled storage and handling procedures during assembly.
Frequently Asked Questions (FAQ)
Q: Can I use CD74HC240M96 as a direct replacement for 74HC240D,652?
A: Yes. CD74HC240M96 maintains identical electrical specifications (2V to 6V supply, 7.8mA output current, 3-state output, 2-element 4-bit inverting buffer architecture) and package format (20-SOIC). The extended operating temperature range (-55°C to 125°C versus -40°C to 125°C) provides additional margin for low-temperature environments.
Q: What is the difference between the Texas Instruments CD74HC240M and CD74HC240M96 variants?
A: Both parts are electrically identical. The primary difference is packaging: CD74HC240M is supplied in Tube packaging, while CD74HC240M96 is supplied in Tape & Reel format. CD74HC240M96 carries Last Time Buy status, while CD74HC240M96 is Active.
Q: Are onsemi MC74HC240ADWG and MC74HC240ADWR2G suitable substitutes?
A: Yes, with packaging considerations. Both parts meet all electrical and functional requirements. However, they carry MSL 3 (168 Hours) moisture sensitivity versus MSL 1 (Unlimited) for the original part. This requires adherence to controlled storage and handling procedures during manufacturing.
Q: Can I use Fairchild Semiconductor MM74HC240WM or MM74HC240WMX?
A: Yes, both parts are functionally equivalent. Note that the operating temperature range is limited to -40°C to 85°C, compared to the original part's -40°C to 125°C. These parts are suitable for applications not requiring the extended high-temperature specification.
Q: What is the significance of the 74HC240D-Q100,118 variant?
A: This part carries AEC-Q100 automotive qualification, making it appropriate for automotive applications requiring qualified component status. It maintains identical electrical specifications and operating temperature range to the original part.
Q: Are there any compliance differences between substitute options?
A: All listed substitutes maintain ROHS3 compliance and REACH Unaffected status consistent with the original part. The 74HC240D-Q100,118 adds automotive qualification (AEC-Q100) for applications requiring this certification.
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