LPV321DBVRE4 Equivalent & Substitute Parts

Part Overview

The LPV321DBVRE4 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This device is classified as obsolete, though 9500 units remain in stock. The LPV321DBVRE4 features rail-to-rail output capability and operates across a 2.7 V to 5 V supply voltage range, making it suitable for low-power analog signal processing applications.

Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity and long-term component availability. Active alternatives with comparable or enhanced electrical characteristics are available from Texas Instruments and other manufacturers.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.1	V/µs
Gain Bandwidth Product	237	kHz
Current - Input Bias	2	nA
Voltage - Input Offset	1.5	mV
Current - Supply	9	µA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
REACH Status	REACH Unaffected	—

Substitute Part Grouping Explanation

Substitute parts for the LPV321DBVRE4 are grouped based on the following substitution criteria:

Group 1: Direct LPV321 Series Variants (Same Base Product) Parts LPV321M5/NOPB, LPV321M5X/NOPB, LPV321M7/NOPB, and LPV321M7X/NOPB maintain identical electrical specifications to the main part: 0.1 V/µs slew rate, 152–237 kHz gain bandwidth product, 2 nA input bias current, 1.5 mV input offset voltage, and 9 µA supply current. These variants differ only in packaging format (SOT-23-5 versus SC-70-5) and distribution method (Cut Tape, Digi-Reel, Bulk, or Tape & Reel). All are active products from Texas Instruments or National Semiconductor.

Group 2: LMV321 Series Variants (Enhanced Performance) Parts LMV321M5/NOPB, LMV321M5X/NOPB, LMV321M7/NOPB, and LMV321M7X/NOPB represent an enhanced variant of the LPV321 base product. These devices maintain the same supply voltage range (2.7–5.5 V, with upper limit extended to 5.5 V), operating temperature range, and package options. However, they feature improved electrical performance: 1 V/µs slew rate (10× faster), 1 MHz gain bandwidth product (4–6× higher), 15 nA input bias current, 1.7 mV input offset voltage, 130 µA supply current, and 160 mA output current per channel. All LMV321 variants are active products.

Group 3: Alternative Manufacturer (Microchip MCP6231) Parts MCP6231RT-E/OT and MCP6231T-E/OT from Microchip Technology provide functional equivalence with different electrical trade-offs. These devices support a wider supply voltage range (1.8–6 V), extended operating temperature to 125°C, and feature extremely low input bias current (1 pA). However, they have higher input offset voltage (5 mV), higher supply current (20 µA), and lower output current capability (23 mA). Both are active products in SOT-23-5 packaging.

Key Substitution Parameters:

Package compatibility (SOT-23-5 or SC-70-5)
Supply voltage range overlap (minimum 2.7 V, maximum ≥5 V)
Rail-to-rail output capability
Operating temperature range (-40°C to ≥85°C)
Single-circuit general-purpose amplifier topology
Surface mount technology

Parameter Comparison

Parameter	LPV321DBVRE4	LPV321M5/NOPB	LMV321M5/NOPB	LMV321M5X/NOPB	LMV321M7/NOPB	LMV321M7X/NOPB	MCP6231RT-E/OT	MCP6231T-E/OT
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Microchip Technology	Microchip Technology
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1	1	1
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	0.1	0.1	1	1	1	1	0.15	0.15
Gain Bandwidth Product (kHz)	237	152	1000	1000	1000	1000	300	300
Current - Input Bias (nA)	2	2	15	15	15	15	0.001	0.001
Voltage - Input Offset (mV)	1.5	1.5	1.7	1.7	1.7	1.7	5	5
Current - Supply (µA)	9	9	130	130	130	130	20	20
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	2.7	2.7	1.8	1.8
Voltage - Supply Span Max (V)	5	5	5.5	5.5	5.5	5.5	6	6
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 125	-40 to 125
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	SC-74A, SOT-753	SC-74A, SOT-753
Supplier Device Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SC-70-5	SC-70-5	SOT-23-5	SOT-23-5
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

Select LPV321M5/NOPB or LPV321M5X/NOPB when SOT-23-5 packaging is required and identical electrical specifications are necessary. Both parts maintain the 0.1 V/µs slew rate, 152 kHz gain bandwidth product, 2 nA input bias current, and 9 µA supply current of the original LPV321DBVRE4. These are active products from Texas Instruments with full RoHS3 compliance and unlimited moisture sensitivity rating. LPV321M5/NOPB is available in Tape & Reel packaging (1605 units in stock), while LPV321M5X/NOPB is available from National Semiconductor in alternative packaging (10100 units in stock).

For SC-70-5 package requirements, select LPV321M7/NOPB or LPV321M7X/NOPB. These maintain identical electrical specifications to the SOT-23-5 variants but in a smaller footprint. LPV321M7/NOPB is available in Bulk packaging (18251 units in stock), and LPV321M7X/NOPB is available in alternative packaging (10200 units in stock).

For Enhanced Performance Applications:

Select LMV321M5/NOPB or LMV321M5X/NOPB when improved dynamic performance is acceptable. These active Texas Instruments products provide 10× faster slew rate (1 V/µs), 4–6× higher gain bandwidth product (1 MHz), and 160 mA output current per channel. Supply current increases to 130 µA, and input bias current rises to 15 nA. The supply voltage range extends to 5.5 V maximum. LMV321M5/NOPB offers 7100 units in stock, while LMV321M5X/NOPB provides 65100 units in stock with highest availability.

For SC-70-5 package with enhanced performance, select LMV321M7/NOPB (25100 units in stock) or LMV321M7X/NOPB (35200 units in stock). Both maintain the same performance improvements as the SOT-23-5 variants.

For Extended Temperature or Alternative Sourcing:

Select MCP6231RT-E/OT or MCP6231T-E/OT from Microchip Technology when extended operating temperature to 125°C is required or when alternative manufacturer sourcing is preferred. These devices support wider supply voltage range (1.8–6 V) and feature extremely low input bias current (1 pA). Trade-offs include higher input offset voltage (5 mV), higher supply current (20 µA), and lower output current (23 mA). Both are active products in SOT-23-5 packaging with RoHS3 compliance. MCP6231RT-E/OT has 1370 units in stock, and MCP6231T-E/OT has 18389 units in stock.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and REACH Unaffected status, matching the original LPV321DBVRE4 regulatory requirements. All parts are classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace LPV321DBVRE4 with LMV321M5X/NOPB without circuit modifications?

A: LMV321M5X/NOPB is electrically compatible in terms of supply voltage range (2.7–5.5 V), operating temperature (-40°C to 85°C), and package (SOT-23-5). However, the LMV321 variant exhibits different electrical characteristics: 10× faster slew rate, 4–6× higher gain bandwidth product, higher supply current (130 µA versus 9 µA), and higher input bias current (15 nA versus 2 nA). Circuit performance will differ. Use LMV321M5X/NOPB only if the application tolerates these parameter changes or benefits from improved dynamic response.

Q2: What is the difference between LPV321M5/NOPB and LPV321M5X/NOPB?

A: Both parts maintain identical electrical specifications. The difference is in manufacturer and packaging format. LPV321M5/NOPB is from Texas Instruments in Tape & Reel packaging (1605 units available). LPV321M5X/NOPB is from National Semiconductor in alternative packaging (10100 units available). Select based on packaging requirements and supplier availability.

Q3: Why should I choose SC-70-5 package variants (LPV321M7/NOPB, LMV321M7/NOPB) over SOT-23-5?

A: SC-70-5 (5-TSSOP, SOT-353) is a smaller footprint package than SOT-23-5 (SC-74A, SOT-753). Select SC-70-5 variants when board space is constrained. Electrical specifications remain identical between package options within the same product line (LPV321 or LMV321).

Q4: Is MCP6231 a suitable replacement for low-power applications?

A: MCP6231 is not ideal for ultra-low-power applications. It consumes 20 µA supply current compared to 9 µA for LPV321DBVRE4 or 130 µA for LMV321 variants. However, MCP6231 offers advantages in applications requiring extended temperature range (to 125°C), wider supply voltage tolerance (1.8–6 V), or extremely low input bias current (1 pA). Evaluate power budget and temperature requirements before selection.

Q5: Can I use MCP6231T-E/OT in a design originally specified for LPV321DBVRE4?

A: MCP6231T-E/OT is functionally compatible as a general-purpose rail-to-rail amplifier in SOT-23-5 packaging. However, verify that your circuit tolerates the following differences: higher input offset voltage (5 mV versus 1.5 mV), higher supply current (20 µA versus 9 µA), lower output current (23 mA versus unspecified), and different slew rate (0.15 V/µs versus 0.1 V/µs). Extended operating temperature to 125°C and wider supply range (1.8–6 V) may provide design benefits.

Q6: Which substitute part has the highest inventory availability?

A: LMV321M5X/NOPB from Texas Instruments has the highest inventory with 65100 units in stock. This part offers enhanced performance (1 V/µs slew rate, 1 MHz gain bandwidth product) compared to the original LPV321DBVRE4 while maintaining SOT-23-5 packaging and 2.7–5.5 V supply range.

Q7: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed—LPV321 variants, LMV321 variants, and MCP6231 variants—are ROHS3 compliant with MSL Level 1 (unlimited moisture sensitivity) and REACH Unaffected status, matching the original LPV321DBVRE4 regulatory profile.

Q8: What is the key difference between LPV321 and LMV321 product lines?

A: LMV321 is an enhanced variant of the LPV321 base product. LMV321 provides 10× faster slew rate (1 V/µs versus 0.1 V/µs), 4–6× higher gain bandwidth product (1 MHz versus 152–237 kHz), higher output current capability (160 mA versus unspecified), and extended maximum supply voltage (5.5 V versus 5 V). Trade-offs include higher supply current (130 µA versus 9 µA) and higher input bias current (15 nA versus 2 nA). Both maintain identical operating temperature range and package options.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message