BU4584BFV-E2 Equivalent & Substitute Parts

Part Overview

The BU4584BFV-E2 is a 6-channel inverter IC with Schmitt trigger functionality manufactured by Rohm Semiconductor in a 14-SSOP-B surface mount package. This logic device operates across a 3V to 16V supply voltage range and is designed for digital signal inversion applications requiring hysteresis input characteristics.

The BU4584BFV-E2 carries a "Not For New Designs" product status, indicating that Rohm Semiconductor has discontinued active development for this part. This status necessitates identifying functionally equivalent alternatives for ongoing production requirements, maintenance applications, and new design implementations where the core inverter functionality with Schmitt trigger characteristics remains applicable.

Substiute Parts

BU4584BFV-E2

Rohm SemiconductorIn Stock: 2245BU4584BFV-E2 Datasheet

Current PartRFQ

MC14584BDTR2G

onsemiIn Stock: 1681MC14584BDTR2G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BU4584BFV-E2 is determined by the following core parameters:

Functional Requirements:

• Logic type must be Inverter
• Number of circuits must be 6
• Number of inputs must be 1
• Schmitt trigger feature must be present

Electrical Compatibility:

• Supply voltage range must encompass or exceed 3V ~ 16V
• Operating temperature range must support -40°C ~ 85°C minimum
• Output drive capability must meet or exceed 3mA per channel

Physical & Compliance Requirements:

• Mounting type must be Surface Mount
• Package footprint must be compatible with 14-pin SSOP/TSSOP form factors (0.173" width, 4.40mm)
• RoHS3 compliance required
• MSL rating of 1 (Unlimited) required

The MC14584BDTR2G from onsemi meets all substitution criteria as a functionally equivalent 6-channel Schmitt trigger inverter in a compatible 14-TSSOP package with superior electrical performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The MC14584BDTR2G represents the primary equivalent substitute for the BU4584BFV-E2. Selection between these parts should be based on the following engineering criteria:

Product Status Consideration: The MC14584BDTR2G maintains Active product status with onsemi, ensuring continued availability, manufacturing support, and compliance updates. The BU4584BFV-E2 "Not For New Designs" designation indicates Rohm has transitioned away from this product line. For applications requiring long-term supply assurance and ongoing technical support, the MC14584BDTR2G is the preferred selection.

Compliance & Certification: Both parts maintain ROHS3 compliance and MSL rating of 1 (Unlimited), satisfying standard industrial and commercial procurement requirements. Both carry EAR99 ECCN classification and REACH Unaffected status, indicating equivalent regulatory standing.

Electrical Performance: The MC14584BDTR2G provides enhanced electrical characteristics including lower quiescent current (1 µA vs. 4 µA), higher output drive capability (8.8mA vs. 3mA), and extended operating temperature range (-55°C ~ 125°C vs. -40°C ~ 85°C). These improvements support broader application flexibility without functional compromise.

Package Compatibility: Both parts utilize 14-pin SSOP/TSSOP packages with identical 0.173" width and 4.40mm pitch specifications. PCB footprints are mechanically compatible, though minor land pattern adjustments may be required due to LSSOP versus TSSOP dimensional variations. Verification with PCB design documentation is recommended prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the MC14584BDTR2G directly replace the BU4584BFV-E2 without circuit modification?

A: The MC14584BDTR2G is functionally equivalent and pin-compatible with the BU4584BFV-E2. Both devices implement 6-channel Schmitt trigger inverter logic with identical pin assignments. Direct substitution is possible in most applications. However, the MC14584BDTR2G exhibits higher output drive current (8.8mA vs. 3mA) and lower quiescent current (1 µA vs. 4 µA). Applications with current-sensitive designs should verify these parameter differences do not affect circuit operation.

Q: What is the primary reason for substituting the BU4584BFV-E2?

A: The BU4584BFV-E2 carries "Not For New Designs" status from Rohm Semiconductor, indicating discontinued active development. This status creates supply chain risk for long-term production. The MC14584BDTR2G maintains Active status with onsemi, providing assured availability and manufacturing continuity.

Q: Are the package footprints identical between BU4584BFV-E2 and MC14584BDTR2G?

A: Both parts use 14-pin surface mount packages with 0.173" width and 4.40mm pitch. The BU4584BFV-E2 uses 14-LSSOP (Low-profile SSOP) while the MC14584BDTR2G uses 14-TSSOP (Thin SSOP). These variants have minor dimensional differences in body height and lead configuration. PCB footprints are mechanically compatible for most applications, but design verification is recommended to confirm land pattern compatibility with your specific PCB layout.

Q: What are the key electrical differences between these parts?

A: The MC14584BDTR2G provides superior electrical performance: quiescent current is reduced to 1 µA (from 4 µA), output drive capability increases to 8.8mA (from 3mA), and operating temperature range extends to -55°C ~ 125°C (from -40°C ~ 85°C). Supply voltage range increases to 3V ~ 18V (from 3V ~ 16V). Propagation delay is slightly longer at 80ns versus 50ns at 15V with 50pF load. These differences make the MC14584BDTR2G suitable for a broader range of applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the BU4584BFV-E2 and MC14584BDTR2G maintain ROHS3 compliance and carry MSL rating of 1 (Unlimited), meeting standard industrial procurement and environmental requirements.

Q: Which part should be selected for new designs?

A: The MC14584BDTR2G should be selected for new designs. It maintains Active product status, offers enhanced electrical performance, and ensures long-term supply availability. The BU4584BFV-E2 "Not For New Designs" designation indicates it should not be used in new applications.