TLC352IDG4 Equivalent & Substitute Parts

Part Overview

The TLC352IDG4 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 TLC352IDG4 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for systems utilizing this comparator architecture.

Key Parameters

Parameter	TLC352IDG4 Value
Manufacturer	Texas Instruments
Type	Differential Comparator
Number of Elements	2
Output Type	CMOS, MOS, Open-Drain, TTL
Package / Case	8-SOIC (0.154", 3.90mm Width)
Voltage - Supply, Single/Dual (±)	1.4V ~ 16V, ±0.7V ~ 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
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the TLC352IDG4 are grouped based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Package type: 8-SOIC form factor (0.154", 3.90mm Width)
Mounting type: Surface mount
Number of elements: 2 comparators per IC
Output configuration: Open-drain capability
Supply voltage range overlap: Minimum 1.4V to 16V single supply or equivalent dual supply
Input offset voltage: Maximum 5mV specification at rated voltage
Input bias current: Maximum 5pA specification
Output current capability: Minimum 20mA typical
Quiescent current: Maximum 400µA specification
Operating temperature: Support for -40°C to 85°C range
Compliance: ROHS3 and REACH requirements

Substitute parts are classified into two functional categories:

Category 1: Direct Differential Comparators (TLC352IDR, TLC352ID, TS372CDT, TS372IDT) These parts maintain the differential comparator architecture with identical or superior electrical specifications and full parameter compatibility with the TLC352IDG4.

Category 2: General Purpose Comparators (NCS3402DR2G, TS393CDT, TS393IDT, TS393IYDT) These parts provide general purpose comparator functionality with open-drain output and compatible package specifications. Electrical parameters meet or exceed TLC352IDG4 requirements within the 8-SOIC package constraint.

Parameter Comparison

Parameter	TLC352IDG4	TLC352IDR	TLC352ID	NCS3402DR2G	TS372CDT	TS372IDT	TS393CDT	TS393IDT	TS393IYDT
Manufacturer	TI	TI	TI	onsemi	STM	STM	STM	STM	STM
Type	Differential	Differential	Differential	General Purpose	Differential	Differential	General Purpose	General Purpose	General Purpose
Number of Elements	2	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	Open-Drain	CMOS, MOS, Open-Drain, TTL	CMOS, MOS, Open-Drain, TTL	CMOS, Open-Drain	CMOS, Open-Drain	CMOS, Open-Drain
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Voltage - Supply (Min-Max)	1.4V ~ 16V	1.4V ~ 16V	1.4V ~ 16V	2.5V ~ 16V	3V ~ 16V	3V ~ 16V	2.7V ~ 16V	2.7V ~ 16V	2.7V ~ 16V
Voltage - Input Offset (Max)	5mV @ 5V	5mV @ 5V	5mV @ 5V	3.6mV @ 15V	10mV @ 5V	10mV @ 5V	5mV @ 10V	5mV @ 10V	5mV @ 10V
Current - Input Bias (Max)	5pA @ 5V	5pA @ 5V	5pA @ 5V	250pA @ 15V	1pA	1pA	1pA @ 5V	1pA @ 5V	1pA @ 5V
Current - Output (Typ)	20mA	20mA	20mA	10mA	20mA	20mA	20mA	20mA	20mA
Current - Quiescent (Max)	400µA	400µA	400µA	640nA	375µA	375µA	25µA	25µA	25µA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1 - Recommended Direct Substitutes (Highest Compatibility):

TLC352IDR is the primary recommended substitute. This part is the active production variant of the TLC352 base product, manufactured by Texas Instruments with identical electrical specifications to the TLC352IDG4. It maintains full parameter compatibility across supply voltage, input offset, bias current, output current, and quiescent current specifications. The TLC352IDR is available in Cut Tape and Digi-Reel packaging with 17,117 units in stock, ensuring supply continuity. Product status is active, supporting long-term availability.

TS372IDT provides an alternative differential comparator from STMicroelectronics with extended operating temperature range (-40°C to 125°C). This part meets all critical electrical parameters with superior input bias current specification (1pA maximum). The TS372IDT is actively produced with 19,135 units in stock and supports industrial temperature applications beyond the original TLC352IDG4 specification.

Tier 2 - Compatible General Purpose Substitutes:

TS393IYDT is a general purpose comparator from STMicroelectronics qualified to AEC-Q100 automotive standards. This part provides open-drain output with extended temperature range (-40°C to 125°C) and significantly reduced quiescent current (25µA maximum). The TS393IYDT is actively produced with 29,300 units in stock. Automotive qualification provides additional reliability assurance for mission-critical applications.

TS393IDT offers identical electrical specifications to TS393IYDT without automotive qualification, suitable for industrial and commercial applications. This part is actively produced with 22,736 units in stock.

NCS3402DR2G is a general purpose comparator from onsemi with superior quiescent current performance (640nA maximum) and extended temperature range (-40°C to 125°C). This part is actively produced with 9,125 units in stock. The reduced quiescent current provides power efficiency advantages in battery-powered or low-power applications.

Tier 3 - Limited Compatibility Substitutes:

TS372CDT is a differential comparator from STMicroelectronics with restricted operating temperature range (0°C to 70°C). This part is suitable only for applications operating within commercial temperature limits. Product status is active with 10,400 units in stock.

TS393CDT is a general purpose comparator from STMicroelectronics with restricted operating temperature range (0°C to 70°C). This part is suitable only for applications operating within commercial temperature limits. Product status is active with 19,017 units in stock.

TLC352ID is the tube-packaged variant of the TLC352 base product from Texas Instruments with identical electrical specifications to TLC352IDG4. Product status is obsolete with 1,444 units in stock. This part provides compatibility but does not address supply continuity concerns associated with obsolete status.

Frequently Asked Questions (FAQ)

Q: Can TLC352IDR directly replace TLC352IDG4 in existing designs?

A: Yes. TLC352IDR is the active production equivalent of TLC352IDG4, manufactured by Texas Instruments with identical electrical specifications. Both parts share the same base product number (TLC352), 8-SOIC package, and all critical parameters including supply voltage range (1.4V ~ 16V), input offset voltage (5mV @ 5V), input bias current (5pA @ 5V), output current (20mA typical), and quiescent current (400µA maximum). The primary difference is packaging format (Cut Tape/Digi-Reel versus the original format) and active product status. No design modifications are required.

Q: What is the difference between differential and general purpose comparators in this list?

A: Differential comparators (TLC352IDR, TLC352ID, TS372CDT, TS372IDT) are optimized for precision voltage comparison between two input signals with matched input characteristics. General purpose comparators (NCS3402DR2G, TS393CDT, TS393IDT, TS393IYDT) provide broader application flexibility with relaxed input specifications. For applications requiring the original TLC352IDG4 differential architecture, Tier 1 and Tier 2 differential comparators are preferred. General purpose comparators are suitable when application requirements permit relaxed input specifications.

Q: Why do some substitute parts have different operating temperature ranges?

A: Operating temperature range is determined by semiconductor manufacturing process and device qualification. TLC352IDG4 specifies -40°C to 85°C. Substitute parts with extended ranges (-40°C to 125°C) provide additional margin for high-temperature applications. Substitute parts with restricted ranges (0°C to 70°C) are limited to commercial temperature applications. Selection depends on the target application environment. For designs requiring the original -40°C to 85°C range, TLC352IDR, TS372IDT, TS393IDT, and TS393IYDT provide compatible or superior temperature coverage.

Q: What does "obsolete product status" mean for TLC352IDG4?

A: Obsolete status indicates the manufacturer has discontinued active production and support for this specific part number. While inventory may remain available through distributors, long-term supply cannot be guaranteed. Transitioning to active production equivalents (TLC352IDR, TS372IDT, TS393IYDT) ensures sustained availability and manufacturing support for future production runs and design revisions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, matching the TLC352IDG4 specification. All parts are also REACH unaffected, supporting regulatory requirements for industrial and commercial applications.

Q: What is the significance of AEC-Q100 qualification on TS393IYDT?

A: AEC-Q100 is an automotive industry qualification standard that certifies component reliability under automotive operating conditions, including thermal cycling, vibration, and environmental stress. TS393IYDT carries this qualification, making it suitable for automotive and mission-critical applications requiring enhanced reliability assurance. Non-qualified alternatives are suitable for industrial and commercial applications without automotive requirements.

Q: Can I use NCS3402DR2G if my application requires very low quiescent current?

A: Yes. NCS3402DR2G provides significantly reduced quiescent current (640nA maximum) compared to TLC352IDG4 (400µA maximum), offering substantial power efficiency advantages. However, NCS3402DR2G is a general purpose comparator rather than a differential comparator. Verify that your application can accommodate the general purpose architecture and the slightly higher input offset voltage (3.6mV @ 15V) before substitution.

Q: What packaging options are available for substitute parts?

A: All substitute parts are available in 8-SOIC surface mount package, matching TLC352IDG4 form factor. Packaging variants differ in tape format: Cut Tape (CT) & Digi-Reel for individual component handling, Tape & Reel (TR) for automated assembly, and Tube for bulk quantities. Selection depends on manufacturing process requirements and order quantities. Consult distributor availability for specific packaging requirements.

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