BU7252FVM-TR Equivalent & Substitute Parts

Part Overview

The BU7252FVM-TR is a dual-channel general purpose comparator manufactured by Rohm Semiconductor in 8-MSOP surface mount packaging. This active product operates across single supply (1.8V to 5.5V) and dual supply (±0.9V to ±2.75V) configurations with push-pull output topology. The device is designed for general purpose signal comparison applications requiring low input offset voltage and moderate propagation delay performance.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining compatibility with the 8-pin MSOP package footprint and surface mount assembly requirements.

Key Parameters

Parameter	BU7252FVM-TR
Manufacturer	Rohm Semiconductor
Package Type	8-MSOP (0.110", 2.80mm Width)
Number of Comparators	2
Output Type	Push-Pull
Supply Voltage Range (Single)	1.8V ~ 5.5V
Supply Voltage Range (Dual)	±0.9V ~ ±2.75V
Input Offset Voltage (Max)	11mV @ 3V
Input Bias Current (Max)	1pA @ 3V
Output Current (Typ)	6mA @ 3V
Quiescent Current (Max)	65µA
CMRR / PSRR (Typ)	80dB / 80dB
Propagation Delay (Max)	550ns
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the BU7252FVM-TR are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Dual-channel comparator architecture (2 elements)
Push-pull output topology
Surface mount 8-pin package (MSOP, TSSOP, SOIC, or DFN variants)
Supply voltage compatibility: minimum 1.8V single supply or ±0.9V dual supply capability
Input offset voltage ≤ 11mV
Operating temperature range ≥ -40°C to 85°C
RoHS3 compliance and MSL rating ≤ 2

Secondary Compatibility Factors:

Propagation delay performance (550ns maximum acceptable)
Quiescent current within reasonable operational limits
CMRR and PSRR performance ≥ 70dB

Parts meeting these criteria are grouped by manufacturer and packaging variant to facilitate direct replacement or design flexibility.

Parameter Comparison

Part Number	Manufacturer	Package	Output Type	Supply (Single)	Supply (Dual)	Vos Max (mV)	Ib Max (pA)	Tpd Max (ns)	Iq Max (µA)	Temp Range
BU7252FVM-TR	Rohm	8-MSOP	Push-Pull	1.8-5.5V	±0.9-2.75V	11 @ 3V	1 @ 3V	550	65	-40 to 85°C
MAX9022AUA+	Analog Devices	8-TSSOP	CMOS/Rail-to-Rail/TTL	2.5-5.5V	±1.25-2.75V	1 @ 5V	0.003 @ 5V	8000	5	-40 to 125°C
MAX9022AUA+T	Analog Devices	8-TSSOP	CMOS/Rail-to-Rail/TTL	2.5-5.5V	±1.25-2.75V	1 @ 5V	0.003 @ 5V	8000	5	-40 to 125°C
MAX9032AUA+	Analog Devices	8-TSSOP	Push-Pull/Rail-to-Rail	2.5-5.5V	N/A	1 @ 5V	0.008 @ 5V	228	55	-40 to 125°C
MAX9032AUA+T	Analog Devices	8-TSSOP	Push-Pull/Rail-to-Rail	2.5-5.5V	N/A	1 @ 5V	0.008 @ 5V	228	55	-40 to 125°C
TC75W56FU,LF	Toshiba	8-SSOP	Push-Pull	1.8-7V	±0.9-4.6V	7 @ 5V	1 @ 5V	680	40	-40 to 85°C
TC75W57FU,LF	Toshiba	8-SSOP	Push-Pull	1.8-7V	±0.9-4.6V	7 @ 5V	1 @ 5V	140	400	-40 to 85°C
TLV3202AID	Texas Instruments	8-SOIC	Push-Pull	2.7-5.5V	N/A	5 @ 5V	50 @ 5V	50	50	-40 to 125°C
TS882IQ2T	STMicroelectronics	8-DFN	Push-Pull	1.1-5.5V	N/A	6 @ 5V	10	16000	0.5	-40 to 125°C
TS882IST	STMicroelectronics	8-TSSOP	Push-Pull	1.1-5.5V	N/A	6 @ 5V	10	16000	0.5	-40 to 125°C

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility):

TC75W56FU,LF and TC75W57FU,LF from Toshiba maintain identical supply voltage ranges (1.8V to 7V single, ±0.9V to ±4.6V dual) and push-pull output architecture. Both are RoHS3 compliant with MSL 1 rating. TC75W56FU,LF offers comparable propagation delay (680ns) while TC75W57FU,LF provides faster switching (140ns). Both operate across the full -40°C to 85°C temperature range matching the BU7252FVM-TR.

Compatible Alternatives (Extended Temperature Range):

MAX9032AUA+ and MAX9032AUA+T from Analog Devices provide push-pull, rail-to-rail output with superior propagation delay (228ns) and lower quiescent current (55µA). These parts extend operating temperature to 125°C and are RoHS3 compliant. Supply voltage is limited to 2.5V to 5.5V single supply only, with no dual supply option.

TLV3202AID from Texas Instruments offers the fastest propagation delay (50ns) in push-pull configuration with 8-SOIC packaging. Operating range extends to 125°C. Supply voltage minimum is 2.7V, limiting low-voltage applications. RoHS3 compliant with MSL 2 rating.

Low-Power Alternative:

TS882IST from STMicroelectronics in 8-TSSOP package provides ultra-low quiescent current (500nA) with extended supply range (1.1V to 5.5V). Propagation delay is significantly longer (16µs). RoHS3 compliant with MSL 1 rating and 125°C operating range.

Packaging Considerations:

All substitute parts maintain surface mount assembly compatibility. Package footprints differ (TSSOP, SSOP, SOIC, DFN) requiring PCB layout verification. Pin-to-pin compatibility is not guaranteed; refer to device datasheets for pinout confirmation.

Frequently Asked Questions (FAQ)

Q: Can MAX9022AUA+ replace BU7252FVM-TR directly?

A: MAX9022AUA+ is electrically compatible but has different output characteristics (CMOS/Rail-to-Rail/TTL vs. Push-Pull) and significantly longer propagation delay (8µs vs. 550ns). Supply voltage minimum is 2.5V, eliminating 1.8V operation. Substitution is valid only if application timing and voltage requirements permit these differences.

Q: What is the key difference between TC75W56FU,LF and TC75W57FU,LF?

A: Both are Toshiba push-pull comparators with identical supply ranges and input specifications. TC75W57FU,LF provides faster propagation delay (140ns vs. 680ns) but higher quiescent current (400µA vs. 40µA). Selection depends on speed vs. power consumption requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification. Moisture sensitivity levels range from MSL 1 (unlimited) to MSL 2 (1 year), affecting storage and handling requirements.

Q: Can TS882IST operate at 1.8V supply voltage?

A: Yes. TS882IST supports supply voltage from 1.1V to 5.5V, providing broader low-voltage capability than the BU7252FVM-TR. However, propagation delay is significantly longer (16µs), which may impact timing-critical applications.

Q: What packaging changes occur with substitute parts?

A: BU7252FVM-TR uses 8-MSOP (0.110" width). Substitutes use 8-TSSOP (0.118" width), 8-SSOP, 8-SOIC (0.154" width), or 8-DFN packages. PCB footprints differ; verify pinout and land pattern compatibility before design implementation.

Q: Which substitute offers the best propagation delay performance?

A: TLV3202AID provides the fastest propagation delay at 50ns maximum. This comes with trade-offs: 8-SOIC package, 2.7V minimum supply voltage, and MSL 2 moisture sensitivity rating.

Q: Is dual supply operation available in all substitutes?

A: No. Only BU7252FVM-TR, TC75W56FU,LF, and TC75W57FU,LF support dual supply (±) operation. MAX9022, MAX9032, TLV3202, and TS882 series are single supply only.

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