TLC372IDRG4 Equivalent & Substitute Parts

Part Overview

The TLC372IDRG4 is a dual differential comparator IC manufactured by Texas Instruments in the LinCMOS™ series, housed in an 8-SOIC surface mount package. This component features CMOS, MOS, open-drain, and TTL output configurations suitable for precision voltage comparison applications across industrial and commercial temperature ranges (-40°C to 85°C).

The TLC372IDRG4 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for legacy systems or new designs requiring compatible functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	TLC372IDRG4
Manufacturer	Texas Instruments
Category	Linear
Description	IC COMPARATOR 2 DIFF 8SOIC
Type	Differential
Number of Elements	2
Output Type	CMOS, MOS, Open-Drain, TTL
Voltage - Supply, Single/Dual (±)	3V ~ 16V, ±1.5V ~ 8V
Voltage - Input Offset (Max)	5mV @ 5V
Current - Input Bias (Max)	5pA @ 5V
Current - Output (Typ)	20mA
Current - Quiescent (Max)	400µA
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TLC372IDRG4 are grouped based on strict electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Package type: 8-SOIC surface mount (0.154", 3.90mm Width)
Number of elements: 2 comparators
Output type compatibility: CMOS, MOS, open-drain, TTL configurations
Supply voltage range: Minimum 3V single supply or ±1.5V dual supply
Input offset voltage: Maximum 5mV specification
Input bias current: Maximum 5pA specification
Output current capability: Minimum 20mA typical
Quiescent current: Maximum 400µA specification
Operating temperature overlap with -40°C to 85°C range
RoHS3 compliance and MSL 1 rating

Grouping Logic:

Group 1 - Parametric Equivalent (Identical Specifications): TLC372IDR matches all electrical parameters and operates across the full -40°C to 125°C range with active product status.

Group 2 - Functional Equivalents (Differential Type): TS372CDT and TS372IDT are STMicroelectronics differential comparators with matching output types and electrical specifications. TS372IDT extends operating temperature to -40°C to 125°C.

Group 3 - General Purpose Alternatives (Relaxed Specifications): NCS3402DR2G, TS393CDT, TS393IDT, and TS393IYDT are general purpose comparators with open-drain outputs. These parts meet or exceed the TLC372IDRG4 electrical requirements with lower quiescent current and extended temperature ranges. TS393IYDT includes automotive qualification (AEC-Q100).

Parameter Comparison

Parameter	TLC372IDRG4	TLC372IDR	TS372CDT	TS372IDT	NCS3402DR2G	TS393CDT	TS393IDT	TS393IYDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	onsemi	STMicroelectronics	STMicroelectronics	STMicroelectronics
Type	Differential	Differential	Differential	Differential	General Purpose	General Purpose	General Purpose	General Purpose
Number of Elements	2	2	2	2	2	2	2	2
Output Type	CMOS, MOS, Open-Drain, TTL	CMOS, MOS, Open-Drain, TTL	CMOS, MOS, Open-Drain, TTL	CMOS, MOS, Open-Drain, TTL	Open-Drain	CMOS, Open-Drain	CMOS, Open-Drain	CMOS, Open-Drain
Voltage - Supply, Single/Dual (±)	3V ~ 16V, ±1.5V ~ 8V	3V ~ 16V, ±1.5V ~ 8V	3V ~ 16V, ±1.5V ~ 8V	3V ~ 16V, ±1.5V ~ 8V	2.5V ~ 16V	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 16V, ±1.35V ~ 8V
Voltage - Input Offset (Max)	5mV @ 5V	5mV @ 5V	10mV @ 5V	10mV @ 5V	3.6mV @ 15V	5mV @ 10V	5mV @ 10V	5mV @ 10V
Current - Input Bias (Max)	5pA @ 5V	5pA @ 5V	1pA	1pA	250pA @ 15V	1pA @ 5V	1pA @ 5V	1pA @ 5V
Current - Output (Typ)	20mA	20mA	20mA	20mA	10mA	20mA	20mA	20mA
Current - Quiescent (Max)	400µA	400µA	375µA	375µA	640nA	25µA	25µA	25µA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): TLC372IDR is the primary substitute, offering identical electrical parameters and active product status. This part maintains full compatibility with existing designs and provides the longest supply chain availability (30,200 units in stock).

For Extended Temperature Range Applications: TS372IDT extends the operating temperature range to -40°C to 125°C while maintaining differential comparator functionality and matching electrical specifications. This part is suitable for applications requiring wider temperature operation.

For Low Power Applications: TS393 series parts (TS393CDT, TS393IDT, TS393IYDT) feature significantly reduced quiescent current (25µA maximum) compared to the TLC372IDRG4 (400µA maximum). These general purpose comparators meet all electrical requirements with lower power consumption.

For Automotive Applications: TS393IYDT includes AEC-Q100 automotive qualification and operates across -40°C to 125°C. This part is suitable for automotive-grade designs requiring equivalent functionality.

For Lowest Input Bias Current: NCS3402DR2G from onsemi provides the lowest input offset voltage (3.6mV @ 15V) and extremely low quiescent current (640nA maximum), making it suitable for precision measurement applications where input bias current is critical.

All substitute parts maintain 8-SOIC surface mount packaging, ROHS3 compliance, and MSL 1 rating, ensuring mechanical and environmental compatibility with the original TLC372IDRG4 design.

Frequently Asked Questions (FAQ)

Q: Can TLC372IDR be used as a direct replacement for TLC372IDRG4? A: Yes. TLC372IDR is a parametric equivalent with identical electrical specifications, output types, and package configuration. The primary difference is active product status and extended availability.

Q: What is the difference between differential and general purpose comparators in this list? A: Differential comparators (TLC372, TS372 series) are optimized for comparing two input signals with high common-mode rejection. General purpose comparators (TS393, NCS3402) offer broader application flexibility with similar performance characteristics. Both types are electrically compatible with the TLC372IDRG4 within the specified parameter ranges.

Q: Are the TS393 series parts suitable for the same applications as TLC372IDRG4? A: Yes, with consideration for quiescent current differences. TS393 series parts consume significantly less quiescent current (25µA vs. 400µA), making them preferable for battery-powered or low-power applications. All electrical performance parameters meet or exceed TLC372IDRG4 specifications.

Q: Does operating temperature range affect substitution compatibility? A: Operating temperature range affects application suitability but not electrical compatibility. TS372CDT and TS393CDT operate only to 70°C, limiting use in extended temperature environments. TS372IDT, TS393IDT, and TS393IYDT extend to 125°C, providing broader application coverage.

Q: What is the significance of AEC-Q100 qualification on TS393IYDT? A: AEC-Q100 qualification indicates the part meets automotive industry reliability and quality standards. TS393IYDT is suitable for automotive applications requiring equivalent functionality with automotive-grade certification.

Q: Are all substitute parts available in the same packaging options? A: All substitute parts are available in 8-SOIC surface mount packaging. Packaging options (Cut Tape, Digi-Reel, Tape & Reel) vary by part number and supplier, but the physical package dimensions remain identical at 0.154" × 3.90mm width.

Q: Which substitute part offers the best supply chain availability? A: TLC372IDR provides the highest inventory level (30,200 units in stock), followed by TS393IYDT (29,300 units). Both parts ensure reliable supply for production requirements.

Q: Can NCS3402DR2G be used in applications requiring TTL output compatibility? A: NCS3402DR2G features open-drain output only, without TTL output configuration. Applications requiring TTL output should use TLC372IDR, TS372CDT, TS372IDT, or TS393 series parts with CMOS/TTL output options.

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