TLC374CDRG4 Equivalent & Substitute Parts

Part Overview

The TLC374CDRG4 is a 4-channel differential comparator IC manufactured by Texas Instruments in the LinCMOS™ series, housed in a 14-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The TLC374CDRG4 provides CMOS, MOS, open-drain, and TTL output configurations suitable for precision voltage comparison circuits across industrial and consumer applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	TLC374CDRG4
Manufacturer	Texas Instruments
Type	Differential Comparator
Number of Elements	4
Output Type	CMOS, MOS, Open-Drain, TTL
Voltage Supply Range (Single/Dual)	3V ~ 16V, ±1.5V ~ 8V
Input Offset Voltage (Max)	5mV @ 5V
Input Bias Current (Max)	5pA @ 5V
Output Current (Typ)	20mA
Quiescent Current (Max)	800µA
Operating Temperature	0°C ~ 70°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the TLC374CDRG4 is determined by the following critical parameters:

Primary Substitution Criteria:

Differential comparator type with 4 channels
CMOS, MOS, open-drain, and TTL output capability
Supply voltage range: 3V ~ 16V (single), ±1.5V ~ 8V (dual)
14-SOIC package footprint compatibility
Surface mount configuration
ROHS3 compliance

Substitution Categories:

Direct Parametric Equivalent (TLC374CDR): Identical electrical specifications and differential type, differing only in packaging format (Cut Tape & Digi-Reel vs. Digi-Reel).
Cross-Manufacturer Differential Substitutes (TS374CDT, TS374IDT): STMicroelectronics equivalents maintaining differential comparator type, identical supply voltage range, and 14-SOIC package. Minor variations in quiescent current (250µA vs. 800µA) and input offset voltage (10mV vs. 5mV) are within acceptable engineering tolerances for most applications.
General Purpose Comparator Alternatives (TS339CDT, TS339IDT): STMicroelectronics general purpose comparators with 4 channels, CMOS and open-drain outputs. These offer lower quiescent current (25µA) and input bias current (1pA), with slightly extended supply voltage range (2.7V ~ 16V). Type classification differs (general purpose vs. differential), requiring application-level verification.

Parameter Comparison

Parameter	TLC374CDRG4	TLC374CDR	TS374CDT	TS374IDT	TS339CDT	TS339IDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Type	Differential	Differential	Differential	Differential	General Purpose	General Purpose
Number of Elements	4	4	4	4	4	4
Output Type	CMOS, MOS, Open-Drain, TTL	CMOS, MOS, Open-Drain, TTL	CMOS, MOS, Open-Drain, TTL	CMOS, MOS, Open-Drain, TTL	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	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 16V, ±1.35V ~ 8V
Input Offset Voltage (Max)	5mV @ 5V	5mV @ 5V	10mV @ 5V	10mV @ 5V	5mV @ 10V	5mV @ 10V
Input Bias Current (Max)	5pA @ 5V	5pA @ 5V	1pA @ 5V	1pA @ 5V	1pA @ 5V	1pA @ 5V
Output Current (Typ)	20mA	20mA	20mA	20mA	20mA	20mA
Quiescent Current (Max)	800µA	800µA	250µA	250µA	25µA	25µA
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Product Status	Discontinued	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1 - Direct Replacement: TLC374CDR is the primary substitute for TLC374CDRG4. Both are Texas Instruments differential comparators with identical electrical specifications, supply voltage range, and operating temperature. The only difference is packaging format (Cut Tape & Digi-Reel vs. Digi-Reel). This part maintains full compatibility with existing designs and carries active product status with ROHS3 compliance.

Tier 2 - Cross-Manufacturer Differential Substitutes: TS374CDT and TS374IDT (STMicroelectronics) are functionally equivalent differential comparators with the same 4-channel configuration, output types, and supply voltage range. Both maintain 14-SOIC package compatibility and ROHS3 compliance. TS374IDT extends operating temperature to -40°C ~ 125°C, suitable for wider environmental applications. Quiescent current is reduced to 250µA (vs. 800µA), and input offset voltage increases to 10mV (vs. 5mV). These differences are acceptable for most precision comparison applications.

Tier 3 - General Purpose Comparator Alternatives: TS339CDT and TS339IDT (STMicroelectronics) offer significant power efficiency improvements with 25µA quiescent current and 1pA input bias current. However, these are classified as general purpose comparators rather than differential types. Output configuration is limited to CMOS and open-drain (no TTL option). TS339IDT provides extended temperature range (-40°C ~ 125°C). Selection of these parts requires application-level verification that general purpose comparator characteristics meet circuit requirements.

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

Frequently Asked Questions (FAQ)

Q: Can TLC374CDR directly replace TLC374CDRG4 in production? A: Yes. TLC374CDR is the direct parametric equivalent with identical electrical specifications and operating temperature range. The only difference is packaging format. Both are 14-SOIC surface mount packages with identical pinout and footprint.

Q: What is the difference between differential and general purpose comparators? A: Differential comparators (TLC374, TS374 series) are optimized for comparing two input signals with high common-mode rejection. General purpose comparators (TS339 series) provide broader functionality but may have different input impedance and offset characteristics. Application requirements determine which type is appropriate.

Q: Are STMicroelectronics TS374 parts compatible with Texas Instruments TLC374? A: Yes, for most applications. Both are 4-channel differential comparators in 14-SOIC packages with identical supply voltage ranges and output types. Minor differences in quiescent current (250µA vs. 800µA) and input offset voltage (10mV vs. 5mV) are within acceptable tolerances for standard comparison circuits. Circuit-level testing is recommended for precision applications.

Q: What is the advantage of TS339 comparators over TS374? A: TS339 comparators consume significantly less quiescent current (25µA vs. 250µA or 800µA), making them suitable for battery-powered or low-power applications. However, they are general purpose comparators rather than differential types, and output options are limited to CMOS and open-drain (no TTL). Application verification is required before substitution.

Q: Does operating temperature range affect substitution? A: Yes. TLC374CDRG4 and TLC374CDR operate from 0°C ~ 70°C. TS374IDT and TS339IDT extend to -40°C ~ 125°C, suitable for industrial and automotive environments. If your application requires extended temperature operation, select the appropriate part. Standard commercial temperature range (0°C ~ 70°C) is sufficient for most consumer and industrial applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitutes (TLC374CDR, TS374CDT, TS374IDT, TS339CDT, TS339IDT) are ROHS3 compliant with MSL 1 rating, meeting standard environmental and manufacturing requirements.

Q: What packaging formats are available? A: TLC374CDRG4 uses Digi-Reel packaging. TLC374CDR is available in Cut Tape & Digi-Reel. TS374CDT and TS339CDT use Tape & Reel. TS374IDT and TS339IDT use Cut Tape & Digi-Reel. All maintain identical 14-SOIC footprints and pinouts.

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