MCP6548T-E/SN Equivalent & Substitute Parts

Part Overview

The MCP6548T-E/SN is a general-purpose CMOS comparator manufactured by Microchip Technology, featuring open-drain output with rail-to-rail capability and TTL compatibility. This device operates across a supply voltage range of 1.6V to 5.5V and is packaged in an 8-SOIC surface-mount configuration. The part is currently in active production status with 779 units in stock.

Substitute parts become necessary when the original MCP6548T-E/SN reaches end-of-life, when alternative packaging formats are required for design flexibility, or when supply constraints necessitate equivalent alternatives. The substitute parts listed maintain functional equivalence through matching electrical performance parameters and compatible output characteristics.

Key Parameters

Parameter	MCP6548T-E/SN
Manufacturer	Microchip Technology
Type	General Purpose Comparator
Number of Elements	1
Output Type	CMOS, Open-Drain, Rail-to-Rail, TTL
Supply Voltage Range	1.6V ~ 5.5V
Input Offset Voltage (Max)	7mV @ 5.5V
Input Bias Current (Max)	1pA @ 5.5V
Output Current (Typ)	30mA
Quiescent Current (Max)	1µA
CMRR / PSRR (Typ)	70dB CMRR, 80dB PSRR
Propagation Delay (Max)	8µs
Hysteresis	6.5mV
Operating Temperature	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Electrical Compatibility Criteria:

Output Type: Must include Open-Drain capability
Supply Voltage Range: Must encompass or overlap with 1.6V ~ 5.5V
Input Offset Voltage: Lower values indicate improved performance
Propagation Delay: Must not exceed application timing requirements
Operating Temperature: Must support -40°C ~ 125°C range

Mechanical Compatibility Criteria:

Package format compatibility (8-SOIC preferred for direct replacement; alternative packages acceptable for redesign scenarios)
Surface-mount technology requirement
Pin count and pinout alignment

Compliance Criteria:

RoHS3 compliance required
Active or Last Time Buy product status acceptable

The substitute parts are grouped into two categories:

Category 1: Direct Package Replacement (8-SOIC)

TLV3401IDR: Maintains 8-SOIC package format; operates at higher voltage range (2.7V ~ 16V); Last Time Buy status

Category 2: Alternative Package Formats (SC-70-5 / SOT-23-5)

LMV7275IDCKRQ1: Automotive-qualified SC-70-5 package; reduced supply voltage floor (1.8V)
LMV7275MG/NOPB: SC-70-5 package; active status; higher inventory availability
LMV7275MGX/NOPB: SC-70-5 package; active status; highest inventory availability
LMV7275MF: SOT-23-5 package; active status; largest inventory (35,200 units)

Category 3: Through-Hole Alternative

TLV3401IP: 8-DIP package for through-hole applications; Last Time Buy status

Parameter Comparison

Parameter	MCP6548T-E/SN	LMV7275IDCKRQ1	LMV7275MF	LMV7275MG/NOPB	LMV7275MGX/NOPB	TLV3401IDR	TLV3401IP
Manufacturer	Microchip	Texas Instruments	National Semiconductor	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Output Type	CMOS, Open-Drain, Rail-to-Rail, TTL	Open-Drain	CMOS, Open-Drain, Rail-to-Rail	CMOS, Open-Drain, Rail-to-Rail	CMOS, Open-Drain, Rail-to-Rail	CMOS, Open-Drain	CMOS, Open-Drain
Supply Voltage Range	1.6V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V, ±0.9V ~ 2.75V	1.8V ~ 5.5V, ±0.9V ~ 2.75V	1.8V ~ 5.5V, ±0.9V ~ 2.75V	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 16V, ±1.35V ~ 8V
Input Offset Voltage (Max)	7mV @ 5.5V	4mV @ 5V	4mV @ 5V	4mV @ 5V	4mV @ 5V	3.6mV @ 15V	3.6mV @ 15V
Input Bias Current (Max)	1pA @ 5.5V	0.01µA @ 5V	0.01µA @ 5V	0.01µA @ 5V	0.01µA @ 5V	250pA @ 15V	250pA @ 15V
Output Current (Typ)	30mA	34mA	Not specified	Not specified	Not specified	10mA	10mA
Quiescent Current (Max)	1µA	14µA	14µA	14µA	14µA	950nA	950nA
CMRR / PSRR (Typ)	70dB CMRR, 80dB PSRR	78dB CMRR, 80dB PSRR	78dB CMRR, 80dB PSRR	78dB CMRR, 80dB PSRR	78dB CMRR, 80dB PSRR	88dB CMRR, 105dB PSRR	88dB CMRR, 105dB PSRR
Propagation Delay (Max)	8µs	2.1µs	2.1µs	2.1µs	2.1µs	300µs	300µs
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC	5-TSSOP, SC-70-5, SOT-353	SC-74A, SOT-753	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	8-SOIC	8-DIP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Through Hole
Product Status	Active	Active	Active	Active	Active	Last Time Buy	Last Time Buy
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct 8-SOIC Package Replacement: TLV3401IDR maintains the same 8-SOIC package footprint as the MCP6548T-E/SN. This part is suitable for designs requiring identical PCB layout compatibility. However, TLV3401IDR operates at a higher minimum supply voltage (2.7V versus 1.6V) and exhibits significantly longer propagation delay (300µs versus 8µs). The part carries Last Time Buy status, indicating limited future availability. Selection of TLV3401IDR is appropriate only when supply voltage constraints do not apply and timing-critical applications are not involved.

For Low-Voltage Applications with Reduced Package Size: The LMV7275 series (IDCKRQ1, MF, MG/NOPB, MGX/NOPB) offers superior propagation delay performance (2.1µs) and improved input offset voltage (4mV). These parts operate at a minimum supply voltage of 1.8V, which is compatible with the MCP6548T-E/SN's 1.6V lower limit for most practical applications. All LMV7275 variants maintain active product status with substantial inventory availability. The LMV7275MF variant offers the largest inventory (35,200 units) and is recommended for high-volume procurement. The LMV7275IDCKRQ1 variant includes automotive AEC-Q100 qualification for applications requiring automotive-grade components.

For Through-Hole Assembly: TLV3401IP provides an 8-DIP package alternative for designs utilizing through-hole technology. This part shares the same electrical characteristics as TLV3401IDR but is subject to the same supply voltage and propagation delay limitations. Last Time Buy status applies to this variant as well.

Compliance Considerations: All recommended substitutes maintain ROHS3 compliance. The LMV7275IDCKRQ1 includes automotive qualification (AEC-Q100), making it suitable for automotive and industrial applications requiring enhanced reliability certifications.

Frequently Asked Questions (FAQ)

Q: Can LMV7275 series parts directly replace MCP6548T-E/SN in existing designs?

A: LMV7275 series parts are electrically compatible but require PCB redesign due to package format differences. MCP6548T-E/SN uses 8-SOIC packaging, while LMV7275 variants use SC-70-5 or SOT-23-5 packages. Pinout compatibility must be verified before implementation. The superior propagation delay (2.1µs versus 8µs) and lower input offset voltage (4mV versus 7mV) of LMV7275 parts provide performance advantages in most applications.

Q: What is the minimum supply voltage compatibility between MCP6548T-E/SN and substitute parts?

A: MCP6548T-E/SN operates at 1.6V minimum supply voltage. LMV7275 series parts operate at 1.8V minimum, representing a 0.2V difference. TLV3401 series parts require 2.7V minimum supply voltage and are not suitable for low-voltage applications below this threshold. Design verification is required when operating near minimum supply voltage specifications.

Q: Are LMV7275 parts suitable for automotive applications?

A: LMV7275IDCKRQ1 is automotive-qualified to AEC-Q100 standard and is suitable for automotive applications. Other LMV7275 variants (MF, MG/NOPB, MGX/NOPB) are not specified with automotive qualification. TLV3401 series parts do not carry automotive qualification.

Q: What is the significance of Last Time Buy status for TLV3401 parts?

A: Last Time Buy status indicates that the manufacturer will discontinue production after a specified date. TLV3401IDR and TLV3401IP should not be selected for new designs requiring long-term component availability. These parts are suitable only for legacy design support or short-term production runs.

Q: How do propagation delay differences affect circuit performance?

A: MCP6548T-E/SN exhibits 8µs maximum propagation delay, while LMV7275 series parts exhibit 2.1µs maximum propagation delay. TLV3401 series parts exhibit 300µs maximum propagation delay. In timing-critical applications, LMV7275 series parts provide faster response characteristics. TLV3401 series parts are unsuitable for applications requiring response times below 300µs.

Q: What inventory considerations apply to substitute part selection?

A: LMV7275MF offers the highest inventory availability (35,200 units), followed by LMV7275MGX/NOPB (26,229 units) and LMV7275MG/NOPB (18,496 units). TLV3401IDR and TLV3401IP offer limited inventory (760 and 866 units respectively) and carry Last Time Buy status. For high-volume applications, LMV7275 series parts are recommended based on availability and active product status.

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