BU7487SF-E2 Equivalent & Substitute Parts

Part Overview

The BU7487SF-E2 is a CMOS 4-circuit amplifier manufactured by Rohm Semiconductor, configured as a rail-to-rail operational amplifier in a 14-SOP surface mount package. This device is classified as Active status and is RoHS3 compliant. The BU7487SF-E2 serves applications requiring low-power, multi-channel amplification with rail-to-rail output capability across a 3V to 5.5V supply range. Substitute parts are identified based on matching circuit count, package compatibility, output type, and electrical performance parameters within acceptable operational ranges.

Key Parameters

Parameter	BU7487SF-E2 Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	4	Circuits
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.173", 4.40mm Width)	—
Slew Rate	10	V/µs
Gain Bandwidth Product	10	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	1	mV
Current - Supply	6	mA
Current - Output / Channel	12	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 105	°C
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BU7487SF-E2 are selected based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Number of Circuits: 4 (all substitutes maintain quad-channel configuration)
Output Type: Rail-to-Rail (all substitutes provide rail-to-rail output capability)
Package Type: 14-SOIC surface mount (mechanical and electrical compatibility)
Voltage Supply Range: Minimum 3V to 5.5V maximum (operational envelope compatibility)
Operating Temperature: -40°C minimum to 105°C minimum (thermal compatibility)

Secondary Performance Parameters:

Slew Rate: 10 V/µs (BU7487SF-E2 baseline; substitutes may vary)
Gain Bandwidth Product: 10 MHz (BU7487SF-E2 baseline; substitutes may vary)
Current Supply: 6 mA (BU7487SF-E2 baseline; substitutes may vary)
Output Current per Channel: 12 mA (BU7487SF-E2 baseline; substitutes may vary)

Substitutes are grouped into two categories: direct performance equivalents and functional alternatives with acceptable parameter deviations for general-purpose amplification applications.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Output Type	Slew Rate (V/µs)	GBW (MHz)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
BU7487SF-E2	Rohm Semiconductor	CMOS	4	Rail-to-Rail	10	10	3	5.5	-40 to 105	14-SOIC	Active
ISL28413FBZ	Renesas Electronics	General Purpose	4	Rail-to-Rail	1	2	1.8	5.5	-40 to 125	14-SOIC	Active
ISL28414FBZ	Renesas Electronics	General Purpose	4	Rail-to-Rail	2.5	5	1.8	5.5	-40 to 125	14-SOIC	Active
LMP2234AMAE/NOPB	Texas Instruments	General Purpose	4	Differential, Rail-to-Rail	0.048	0.13	1.6	5.5	-40 to 125	14-SOIC	Active
LMP2234AMAX/NOPB	Texas Instruments	General Purpose	4	Differential, Rail-to-Rail	0.048	0.13	1.6	5.5	-40 to 125	14-SOIC	Active
LMP2234BMA/NOPB	Texas Instruments	General Purpose	4	Differential, Rail-to-Rail	0.048	0.13	1.6	5.5	-40 to 125	14-SOIC	Active
LMP2234BMAE/NOPB	Texas Instruments	General Purpose	4	Differential, Rail-to-Rail	0.048	0.13	1.6	5.5	-40 to 125	14-SOIC	Active
LMP2234BMAX/NOPB	Texas Instruments	General Purpose	4	Differential, Rail-to-Rail	0.048	0.13	1.6	5.5	-40 to 125	14-SOIC	Active
LMV324BG-13	Diodes Incorporated	General Purpose	4	Rail-to-Rail	1	1	2.7	5.5	-40 to 125	14-SOIC	Active
LMV324DR2G	onsemi	Voltage Feedback	4	Rail-to-Rail	1	1	2.7	5.5	-40 to 85	14-SOIC	Active
LMV324ID	Texas Instruments	General Purpose	4	Rail-to-Rail	1	1	2.7	5.5	-40 to 125	14-SOIC	Last Time Buy

Engineering Selection Recommendations

Tier 1 - Direct Performance Equivalents:

ISL28414FBZ (Renesas Electronics) provides the closest performance match to BU7487SF-E2 among available substitutes. This device maintains 4-circuit configuration, rail-to-rail output, and 14-SOIC package compatibility. The ISL28414FBZ operates across 1.8V to 5.5V supply range, exceeding the BU7487SF-E2 minimum requirement of 3V. Slew rate of 2.5 V/µs and gain bandwidth product of 5 MHz represent reduced performance compared to the BU7487SF-E2 baseline (10 V/µs and 10 MHz respectively), but remain suitable for general-purpose amplification. Operating temperature range extends to 125°C, providing thermal margin beyond the BU7487SF-E2 specification of 105°C. Active product status and RoHS3 compliance ensure long-term availability and regulatory alignment.

Tier 2 - Functional Alternatives with Reduced Performance:

ISL28413FBZ (Renesas Electronics) operates with lower slew rate (1 V/µs) and gain bandwidth product (2 MHz) compared to BU7487SF-E2. This device is suitable for applications where bandwidth and slew rate requirements are less stringent. Extended supply range (1.8V minimum) and operating temperature to 125°C provide operational flexibility.

LMV324BG-13 (Diodes Incorporated) and LMV324ID (Texas Instruments) provide general-purpose amplification with 1 V/µs slew rate and 1 MHz gain bandwidth product. These devices operate across 2.7V to 5.5V supply range and maintain 14-SOIC package compatibility. LMV324ID carries Last Time Buy status, indicating limited future availability.

Tier 3 - Specialized Alternatives:

LMP2234 series devices (Texas Instruments: LMP2234AMAE/NOPB, LMP2234AMAX/NOPB, LMP2234BMA/NOPB, LMP2234BMAE/NOPB, LMP2234BMAX/NOPB) feature differential output configuration and significantly reduced slew rate (0.048 V/µs) and gain bandwidth product (130 kHz). These devices are applicable only to applications requiring differential output topology and low-frequency operation. Extended supply range (1.6V minimum) and operating temperature to 125°C are provided.

LMV324DR2G (onsemi) operates with reduced temperature range (-40°C to 85°C) compared to BU7487SF-E2 specification, limiting applicability to systems with lower thermal requirements.

Compliance and Availability:

All recommended substitutes maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment with BU7487SF-E2. Inventory availability ranges from 1220 to 5450 units across substitute options, supporting production requirements.

Frequently Asked Questions (FAQ)

Q1: Can ISL28414FBZ directly replace BU7487SF-E2 in existing designs?

ISL28414FBZ maintains identical circuit count (4), output type (rail-to-rail), and 14-SOIC package configuration as BU7487SF-E2. The device operates within the BU7487SF-E2 supply voltage range (1.8V to 5.5V encompasses 3V to 5.5V requirement). Slew rate and gain bandwidth product are reduced (2.5 V/µs and 5 MHz versus 10 V/µs and 10 MHz), requiring verification that application bandwidth and transient response requirements are satisfied by lower performance specifications. Pin-to-pin compatibility exists for standard operational amplifier configurations.

Q2: What is the primary difference between ISL28413FBZ and ISL28414FBZ?

ISL28413FBZ and ISL28414FBZ differ in slew rate and gain bandwidth product. ISL28413FBZ provides 1 V/µs slew rate and 2 MHz gain bandwidth product, while ISL28414FBZ provides 2.5 V/µs slew rate and 5 MHz gain bandwidth product. Both devices maintain identical circuit count, output type, and package configuration. ISL28414FBZ is suitable for applications requiring higher bandwidth performance within the Renesas ISL28413/ISL28414 family.

Q3: Why do LMP2234 series devices have significantly lower slew rate and bandwidth?

LMP2234 series devices feature differential output topology, which is a specialized configuration distinct from the standard rail-to-rail output of BU7487SF-E2. The reduced slew rate (0.048 V/µs) and gain bandwidth product (130 kHz) reflect design optimization for precision, low-noise differential amplification rather than general-purpose rail-to-rail operation. These devices are applicable only to applications specifically requiring differential output configuration.

Q4: Is LMV324ID suitable for new designs?

LMV324ID carries Last Time Buy status, indicating that Texas Instruments has discontinued this device and existing inventory represents final availability. New designs should not incorporate LMV324ID; instead, select from Active status alternatives such as LMV324BG-13 (Diodes Incorporated) or ISL28414FBZ (Renesas Electronics) to ensure long-term supply continuity.

Q5: What is the impact of reduced operating temperature range in LMV324DR2G?

LMV324DR2G operates across -40°C to 85°C, compared to BU7487SF-E2 specification of -40°C to 105°C. This 20°C reduction in maximum operating temperature limits applicability to systems where ambient or junction temperature remains below 85°C. Applications requiring operation at elevated temperatures (85°C to 105°C) must select alternatives with extended temperature specifications such as ISL28414FBZ or LMV324ID.

Q6: Are all substitute parts available in Tape & Reel packaging?

Packaging format varies across substitutes. ISL28413FBZ and ISL28414FBZ are supplied in Tube packaging. LMP2234 series devices (LMP2234AMAE/NOPB, LMP2234AMAX/NOPB, LMP2234BMAE/NOPB, LMP2234BMAX/NOPB) are supplied in Tape & Reel (TR) format. LMV324BG-13 is supplied in Cut Tape (CT) & Digi-Reel® format. LMV324DR2G and LMV324ID are supplied in Tape & Reel (TR) format. Verify packaging compatibility with assembly equipment and procurement requirements before final part selection.

Q7: What is the significance of Moisture Sensitivity Level (MSL) differences?

BU7487SF-E2 carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling. ISL28413FBZ and ISL28414FBZ carry MSL 2 (1 Year), requiring controlled storage conditions and limiting shelf life to one year from manufacturing date. LMP2234 series devices carry MSL 1 (Unlimited). LMV324BG-13 and LMV324DR2G carry MSL 3 (168 Hours), requiring strict moisture control and bake-out procedures before soldering. Procurement and storage procedures must accommodate MSL requirements to prevent component degradation.

Q8: Can substitute parts be mixed within a single design?

Mixing substitute parts within a single design is not recommended. Variations in slew rate, gain bandwidth product, input bias current, and input offset voltage across different substitute devices will result in inconsistent amplifier performance across channels. Designs should standardize on a single substitute part number to maintain uniform electrical characteristics and predictable system behavior.

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