TLC352IDRG4 Equivalent & Substitute Parts

Part Overview

The TLC352IDRG4 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 analog signal comparison applications. The TLC352IDRG4 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain functional compatibility across key electrical parameters including supply voltage range, input offset voltage, output current capability, and package form factor.

Key Parameters

Parameter	TLC352IDRG4 Value
Comparator Type	Differential
Number of Elements	2
Output Type	CMOS, MOS, Open-Drain, TTL
Supply Voltage Range (Single/Dual)	1.4V ~ 16V / ±0.7V ~ 8V
Input Offset Voltage (Max)	5mV @ 5V
Input Bias Current (Max)	5pA @ 5V
Output Current (Typ)	20mA
Quiescent Current (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

Substitute Part Grouping Explanation

Substitute parts for the TLC352IDRG4 are grouped based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Package form factor: 8-SOIC surface mount only
Number of comparator elements: 2 required
Output type compatibility: Open-drain output capability
Supply voltage overlap: Minimum 1.4V to 16V single supply or equivalent dual supply range
Input offset voltage: Maximum 10mV @ rated voltage
Output current: Minimum 10mA typical
RoHS3 compliance and MSL 1 rating

Substitution Groups:

Group 1 – Direct Functional Equivalents (Differential Type): TLC352IDR, TS372CDT, and TS372IDT maintain the differential comparator architecture with compatible electrical specifications and identical package geometry.

Group 2 – General Purpose Comparators (Functional Alternatives): NCS3402DR2G, TS393CDT, TS393IDT, and TS393IYDT are general purpose comparators with open-drain outputs that meet the core electrical requirements but operate across different temperature and supply voltage ranges.

Parameter Comparison

Part Number	Manufacturer	Type	Supply Voltage (Single)	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Product Status
TLC352IDRG4	Texas Instruments	Differential	1.4V ~ 16V	5mV @ 5V	5pA @ 5V	20mA	400µA	-40°C ~ 85°C	Obsolete
TLC352IDR	Texas Instruments	Differential	1.4V ~ 16V	5mV @ 5V	5pA @ 5V	20mA	400µA	-40°C ~ 85°C	Active
NCS3402DR2G	onsemi	General Purpose	2.5V ~ 16V	3.6mV @ 15V	250pA @ 15V	10mA	640nA	-40°C ~ 125°C	Active
TS372CDT	STMicroelectronics	Differential	3V ~ 16V	10mV @ 5V	1pA	20mA	375µA	0°C ~ 70°C	Active
TS372IDT	STMicroelectronics	Differential	3V ~ 16V	10mV @ 5V	1pA	20mA	375µA	-40°C ~ 125°C	Active
TS393CDT	STMicroelectronics	General Purpose	2.7V ~ 16V	5mV @ 10V	1pA @ 5V	20mA	25µA	0°C ~ 70°C	Active
TS393IDT	STMicroelectronics	General Purpose	2.7V ~ 16V	5mV @ 10V	1pA @ 5V	20mA	25µA	-40°C ~ 125°C	Active
TS393IYDT	STMicroelectronics	General Purpose	2.7V ~ 16V	5mV @ 10V	1pA @ 5V	20mA	25µA	-40°C ~ 125°C	Active

Engineering Selection Recommendations

Primary Recommendation: TLC352IDR

The TLC352IDR is the direct active equivalent to the obsolete TLC352IDRG4. It is manufactured by Texas Instruments in the same LinCMOS™ series with identical electrical specifications, package geometry, and functional architecture. The TLC352IDR maintains full compatibility with existing designs and carries active product status with 17,117 units in stock. This part requires no design modification and is the preferred choice for direct replacement.

Secondary Recommendation: TS372IDT

The TS372IDT from STMicroelectronics is a differential comparator with active product status and extended operating temperature range (-40°C ~ 125°C). It maintains the same 8-SOIC package, dual-element configuration, and 20mA output current. The TS372IDT operates across 3V ~ 16V supply voltage, which overlaps the TLC352IDRG4 range above 3V. Input offset voltage is specified at 10mV maximum, which is acceptable for most applications. This part is suitable for designs operating above 3V supply voltage.

Alternative Recommendation: TS393IYDT

The TS393IYDT from STMicroelectronics is a general purpose comparator with automotive qualification (AEC-Q100) and extended temperature range (-40°C ~ 125°C). It features open-drain output, 20mA output current, and operates across 2.7V ~ 16V supply voltage. The TS393IYDT is suitable for applications requiring automotive-grade components and extended temperature operation. Input offset voltage is 5mV at 10V, matching the TLC352IDRG4 specification at 5V.

Consideration: NCS3402DR2G

The NCS3402DR2G from onsemi is a general purpose comparator with active status and extended temperature range (-40°C ~ 125°C). It operates across 2.5V ~ 16V supply voltage and features superior quiescent current (640nA) and CMRR/PSRR specifications (88dB CMRR, 105dB PSRR). However, output current is specified at 10mA typical, which is lower than the TLC352IDRG4 (20mA). This part is suitable for low-power applications where reduced output drive is acceptable.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can I use TS372CDT as a direct replacement for TLC352IDRG4?

A: TS372CDT is functionally compatible but has a narrower operating temperature range (0°C ~ 70°C) compared to the TLC352IDRG4 (-40°C ~ 85°C). Use TS372CDT only if your application operates within 0°C ~ 70°C. For extended temperature operation, use TS372IDT instead, which supports -40°C ~ 125°C.

Q: What is the minimum supply voltage for substitute parts?

A: TLC352IDR supports 1.4V minimum single supply, matching the original part. TS372 series supports 3V minimum, and TS393/NCS3402 series support 2.7V/2.5V minimum respectively. Verify your circuit's minimum supply voltage requirement before selection.

Q: Are all substitute parts in the same 8-SOIC package?

A: Yes. All listed substitute parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout compatibility. No PCB layout modifications are required.

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

A: Differential comparators (TLC352, TS372 series) are optimized for comparing two analog signals with balanced input stages. General purpose comparators (TS393, NCS3402) are designed for broader applications with potentially different input characteristics. Both types feature open-drain outputs compatible with the original part's output configuration.

Q: Can I use NCS3402DR2G if my application requires 20mA output current?

A: NCS3402DR2G is specified at 10mA typical output current, which is half the TLC352IDRG4 specification (20mA). Use NCS3402DR2G only if your load impedance can tolerate reduced drive current. For applications requiring 20mA output, select TLC352IDR, TS372IDT, TS393IDT, or TS393IYDT.

Q: Is TS393IYDT suitable for automotive applications?

A: Yes. TS393IYDT carries AEC-Q100 automotive qualification and is rated for -40°C ~ 125°C operation. It is suitable for automotive-grade designs requiring extended temperature range and industry-standard reliability certification.

Q: What is the difference between TS393CDT and TS393IDT?

A: Both parts are identical in electrical specifications and package. TS393CDT operates 0°C ~ 70°C, while TS393IDT operates -40°C ~ 125°C. Select TS393IDT for extended temperature applications.

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