BU4584BF-E2 Equivalent & Substitute Parts

Part Overview

The BU4584BF-E2 is a 6-channel inverter IC with Schmitt trigger functionality manufactured by Rohm Semiconductor in a 14-SOP package. This device operates across a 3V to 16V supply range and is designed for logic inversion applications requiring hysteresis input characteristics. The part carries a "Not For New Designs" status, making identification of active equivalent alternatives essential for ongoing production and new project implementations.

Substiute Parts

BU4584BF-E2

Rohm SemiconductorIn Stock: 10379BU4584BF-E2 Datasheet

Current PartRFQ

MC14584BDG

onsemiIn Stock: 32082MC14584BDG Datasheet

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MC14584BDR2G

onsemiIn Stock: 155264MC14584BDR2G Datasheet

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TC4584BF(EL,N,F)

Toshiba Semiconductor and StorageIn Stock: 3372TC4584BF(EL,N,F) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BU4584BF-E2 is determined by the following core parameters:

• Logic type and circuit configuration (6-channel inverter with Schmitt trigger)
• Supply voltage range compatibility (minimum 3V, maximum at least 16V)
• Functional equivalence in input/output characteristics
• Package compatibility (14-SOIC form factor)
• Series classification (4000B logic family)
• Compliance certifications (RoHS3, REACH status)

The identified substitutes maintain functional equivalence across these parameters while offering variations in quiescent current, output drive capability, propagation delay, and product status. All candidates are surface-mount devices in the 14-SOIC package family and belong to the 4000B logic series.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (MC14584BDG, MC14584BDR2G, and TC4584BF(EL,N,F)) are functionally equivalent to the BU4584BF-E2 and maintain active product status with full RoHS3 compliance and unlimited moisture sensitivity ratings.

MC14584BDR2G and MC14584BDG are onsemi manufactured alternatives with extended supply voltage range (3V ~ 18V) and superior quiescent current performance (1 µA maximum). MC14584BDR2G is available in Cut Tape & Digi-Reel packaging with significantly higher inventory (155,200 pcs), while MC14584BDG is supplied in Tube packaging with 31,997 pcs in stock. Both onsemi parts feature higher output drive capability (8.8mA) and extended operating temperature range (-55°C ~ 125°C).

TC4584BF(EL,N,F) from Toshiba maintains quiescent current and output drive characteristics closer to the original BU4584BF-E2 (4 µA, 3.4mA) with matching operating temperature range (-40°C ~ 85°C). This part is supplied in Tape & Reel packaging with 3,300 pcs available inventory.

Package width variations exist across substitutes (0.154" to 0.209" versus original 0.173"), requiring PCB layout verification for footprint compatibility despite all devices conforming to 14-SOIC form factor standards.

Frequently Asked Questions (FAQ)

Q: Can MC14584BDR2G directly replace BU4584BF-E2 on existing PCBs?

A: MC14584BDR2G is functionally equivalent and maintains 14-SOIC package classification. However, package width differs (0.154" versus 0.173"), requiring PCB footprint verification before implementation. Electrical characteristics are compatible across the specified operating conditions.

Q: What is the primary advantage of onsemi substitutes over the Toshiba alternative?

A: onsemi parts (MC14584BDG and MC14584BDR2G) offer reduced quiescent current (1 µA versus 4 µA), extended supply voltage range (3V ~ 18V versus 3V ~ 18V for Toshiba), and higher output drive capability (8.8mA versus 3.4mA). MC14584BDR2G additionally provides superior inventory availability and Cut Tape & Digi-Reel packaging options.

Q: Are all substitutes RoHS3 compliant?

A: Yes. BU4584BF-E2, MC14584BDG, MC14584BDR2G, and TC4584BF(EL,N,F) are all ROHS3 compliant with MSL rating of 1 (Unlimited), ensuring equivalent environmental and regulatory compliance.

Q: How do propagation delays compare across alternatives?

A: BU4584BF-E2 specifies 50ns maximum propagation delay at 15V with 50pF load. MC14584BDG and MC14584BDR2G specify 80ns, while TC4584BF(EL,N,F) specifies 120ns under identical test conditions. Applications with strict timing requirements should account for these variations.

Q: Which substitute offers the best inventory availability?

A: MC14584BDR2G provides the highest inventory level at 155,200 pcs in Cut Tape & Digi-Reel packaging, followed by MC14584BDG at 31,997 pcs in Tube packaging, and TC4584BF(EL,N,F) at 3,300 pcs in Tape & Reel packaging.

Q: What is the significance of "Not For New Designs" status on the BU4584BF-E2?

A: This status indicates the original part is obsolete or discontinued for new applications. All identified substitutes carry "Active" product status, confirming ongoing manufacturer support and long-term availability for new designs and production continuity.