TLC352CD Equivalent & Substitute Parts

Part Overview

The TLC352CD is a dual differential comparator IC manufactured by Texas Instruments in 8-SOIC surface mount packaging. This device operates across a wide supply voltage range (1.4V ~ 16V single supply, ±0.7V ~ 8V dual supply) and features CMOS/MOS open-drain TTL output architecture. The TLC352CD is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across supply voltage, input offset specifications, output current capability, and quiescent current parameters while accommodating the 8-SOIC package standard.

Substiute Parts

TLC352CD

Texas InstrumentsIn Stock: 1329TLC352CD Datasheet

Current PartRFQ

TLC352CDR

Texas InstrumentsIn Stock: 2759TLC352CDR Datasheet

MFR RecommendedRFQ

NCS3402DR2G

onsemiIn Stock: 9169NCS3402DR2G Datasheet

MFR RecommendedRFQ

TS372CDT

STMicroelectronicsIn Stock: 10500TS372CDT Datasheet

MFR RecommendedRFQ

TS372IDT

STMicroelectronicsIn Stock: 19197TS372IDT Datasheet

MFR RecommendedRFQ

TS393CDT

STMicroelectronicsIn Stock: 19101TS393CDT Datasheet

MFR RecommendedRFQ

TS393IDT

STMicroelectronicsIn Stock: 22813TS393IDT Datasheet

MFR RecommendedRFQ

TS393IYDT

STMicroelectronicsIn Stock: 29370TS393IYDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC352CD is determined by the following critical parameters:

Primary Compatibility Criteria:

• Package type: 8-SOIC surface mount form factor (0.154", 3.90mm width)
• Dual comparator configuration (2 elements minimum)
• Supply voltage range overlap with 1.4V ~ 16V single supply or ±0.7V ~ 8V dual supply
• Input offset voltage specification of 5mV or lower
• Output current capability of 20mA or greater
• Quiescent current not exceeding 400µA

Substitute Categories:

1. Direct Functional Equivalents (Differential Type): TLC352CDR, TS372CDT, TS372IDT — maintain differential comparator topology with matching output characteristics and supply voltage compatibility.

2. General Purpose Alternatives (Open-Drain Output): NCS3402DR2G, TS393CDT, TS393IDT, TS393IYDT — provide general purpose comparator functionality with open-drain output, compatible supply ranges, and equivalent performance metrics.

All substitutes maintain 8-SOIC packaging, surface mount mounting, dual element configuration, and ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TLC352CDR

TLC352CDR is the manufacturer-recommended direct substitute. It maintains identical electrical specifications to the TLC352CD across all critical parameters: differential comparator topology, 1.4V ~ 16V supply voltage range, 5mV input offset, 20mA output current, and 400µA quiescent current. The only difference is packaging format (Tape & Reel vs. Tube) and active product status. This part is suitable for direct replacement in existing designs without circuit modification.

Secondary Recommendations:

TS372CDT and TS372IDT (STMicroelectronics) provide differential comparator functionality with active product status. These parts operate across 3V ~ 16V supply range (narrower than TLC352CD at the low end), feature superior input bias current (1pA vs. 5pA), and maintain 20mA output current and 375µA quiescent current. TS372IDT extends operating temperature to -40°C ~ 125°C. Selection depends on minimum supply voltage requirements in the target application.

Alternative Options:

TS393CDT, TS393IDT, and TS393IYDT (STMicroelectronics) function as general purpose comparators with open-drain output. These parts offer significantly lower quiescent current (25µA vs. 400µA), matching input offset specification (5mV), and extended temperature range options. TS393IYDT includes automotive qualification (AEC-Q100). These alternatives are suitable when supply voltage minimum of 2.7V is acceptable and lower power consumption is beneficial.

NCS3402DR2G (onsemi) operates across 2.5V ~ 16V with superior input offset (3.6mV) and extended temperature range (-40°C ~ 125°C). However, output current is reduced to 10mA and quiescent current increases to 640nA. This part is applicable only when 10mA output current meets circuit requirements.

All substitute parts maintain ROHS3 compliance and 8-SOIC surface mount packaging.

Frequently Asked Questions (FAQ)

Q: Can TLC352CDR be used as a direct replacement for TLC352CD?

A: Yes. TLC352CDR is the active equivalent with identical electrical specifications. The only difference is packaging format (Tape & Reel instead of Tube). No circuit modifications are required.

Q: What is the key difference between differential and general purpose comparator substitutes?

A: Differential comparators (TLC352CDR, TS372CDT, TS372IDT) are optimized for differential input signal processing. General purpose comparators (TS393 series, NCS3402DR2G) provide broader functionality with different output characteristics. Selection depends on circuit topology requirements.

Q: Are all substitutes compatible with the 8-SOIC package footprint?

A: Yes. All listed substitutes use 8-SOIC (0.154", 3.90mm width) surface mount packaging with identical pinout compatibility.

Q: What is the minimum supply voltage consideration when selecting a substitute?

A: TLC352CD operates down to 1.4V single supply. TS372 series operates from 3V minimum. TS393 and NCS3402 series operate from 2.7V and 2.5V respectively. Verify minimum supply voltage compatibility with your circuit design.

Q: Does TS393IYDT offer any advantages over other TS393 variants?

A: TS393IYDT includes automotive qualification (AEC-Q100) and extended operating temperature range (-40°C ~ 125°C). It is suitable for automotive and industrial applications requiring temperature robustness and qualification compliance.

Q: How does quiescent current differ among substitutes?

A: TLC352CD and TLC352CDR specify 400µA maximum quiescent current. TS372 series specifies 375µA. TS393 series specifies 25µA (significantly lower). NCS3402DR2G specifies 640nA. Lower quiescent current reduces power consumption in battery-powered or low-power applications.

Q: Can NCS3402DR2G be used if output current requirement is only 10mA?

A: Yes, if your circuit requires maximum 10mA output current. NCS3402DR2G provides 10mA typical output current versus 20mA for other substitutes. Verify that your load impedance and circuit design accommodate this reduced output current specification.