TLC339MN Equivalent & Substitute Parts

Part Overview

The TLC339MN is a general-purpose CMOS comparator with open-drain output, manufactured by Texas Instruments in a 14-DIP through-hole package. This device integrates four independent comparators suitable for precision voltage comparison applications across industrial and commercial temperature ranges (-55°C to 125°C). The TLC339MN carries Last Time Buy status, indicating end-of-life designation. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term support.

Substiute Parts

TLC339MN

Texas InstrumentsIn Stock: 1207TLC339MN Datasheet

Current PartRFQ

TLC339MDR

Texas InstrumentsIn Stock: 1220TLC339MDR Datasheet

MFR RecommendedRFQ

CMP401GRUZ-REEL

Analog Devices Inc.In Stock: 4922CMP401GRUZ-REEL Datasheet

MFR RecommendedRFQ

TS339CPT

STMicroelectronicsIn Stock: 8156TS339CPT Datasheet

MFR RecommendedRFQ

TS339IPT

STMicroelectronicsIn Stock: 19183TS339IPT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC339MN is determined by electrical parameter compatibility and functional equivalence. The critical parameters governing substitution are:

• Number of Elements: Must be 4 independent comparators
• Output Type: Must be CMOS with open-drain configuration
• Voltage Supply Range: Must support 4V ~ 16V operation
• Input Offset Voltage: Maximum 5mV @ 10V
• Input Bias Current: Maximum 5pA @ 5V
• Output Current: Minimum 20mA typical
• Quiescent Current: Maximum 175µA
• CMRR: Minimum 84dB
• Operating Temperature: Must cover -55°C ~ 125°C or equivalent industrial range

Substitute parts are grouped into two categories based on packaging and product status:

Category 1 - Texas Instruments LinCMOS™ Series (Electrical Equivalents)

• TLC339MDR: Surface-mount alternative with identical electrical specifications and active product status
• Base product number TLC339 maintains full electrical compatibility

Category 2 - Cross-Manufacturer Alternatives (Functional Equivalents with Parameter Variations)

• CMP401GRUZ-REEL (Analog Devices): Different output type (CMOS, TTL) and supply voltage range (±5V); faster propagation delay (30ns vs 4.5µs); different package (16-TSSOP)
• TS339CPT and TS339IPT (STMicroelectronics): Extended supply voltage range (2.7V ~ 16V, ±1.35V ~ 8V); lower quiescent current (25µA); different package (14-TSSOP); temperature range variation

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TLC339MDR

The TLC339MDR is the direct electrical equivalent of the TLC339MN, maintaining identical specifications across all critical parameters including supply voltage range, input offset voltage, input bias current, output current, quiescent current, and CMRR. Both devices are manufactured by Texas Instruments under the LinCMOS™ series and carry ROHS3 compliance. The TLC339MDR holds Active product status, ensuring long-term availability and supply chain stability. The only functional difference is packaging format: TLC339MDR uses 14-SOIC surface-mount packaging versus the through-hole 14-DIP of the original. This substitution requires PCB redesign for mounting but provides superior electrical equivalence.

Secondary Recommendation: TS339IPT

The TS339IPT from STMicroelectronics provides functional equivalence with notable parameter improvements. It maintains CMOS open-drain output configuration, supports the required 4V ~ 16V supply range, and meets input offset and output current specifications. The TS339IPT offers superior input bias current performance (1pA vs 5pA) and significantly lower quiescent current (25µA vs 175µA), beneficial for low-power applications. Operating temperature range extends to -40°C ~ 125°C, covering the original specification. The 14-TSSOP surface-mount package requires PCB redesign. TS339IPT carries Active product status and ROHS3 compliance.

Alternative Consideration: TS339CPT

The TS339CPT is electrically identical to TS339IPT but operates within a narrower temperature range (0°C ~ 70°C), making it unsuitable for applications requiring the full -55°C ~ 125°C industrial temperature specification of the original TLC339MN.

Not Recommended: CMP401GRUZ-REEL

The CMP401GRUZ-REEL from Analog Devices exhibits significant parameter deviations that limit substitution suitability. The device uses ±5V supply voltage (not compatible with 4V ~ 16V single supply), features CMOS/TTL output (not pure open-drain), and operates within -40°C ~ 125°C temperature range (does not meet -55°C lower limit). While propagation delay is superior (30ns), the quiescent current is substantially higher (6mA/1mA vs 175µA), and CMRR is reduced (60dB vs 84dB). The 16-TSSOP package differs from the original. This part is suitable only for applications with relaxed temperature and supply voltage requirements.

Frequently Asked Questions (FAQ)

Q: Can I directly replace TLC339MN with TLC339MDR on my existing PCB?

A: No. The TLC339MN uses 14-DIP through-hole packaging while TLC339MDR uses 14-SOIC surface-mount packaging. PCB redesign is required. However, electrical specifications are identical, so circuit functionality remains unchanged after layout modification.

Q: What is the key difference between TLC339MDR and TS339IPT?

A: Both are functional equivalents with identical output type (CMOS open-drain) and core electrical performance. TLC339MDR is manufactured by Texas Instruments with 84dB CMRR and 175µA quiescent current. TS339IPT is manufactured by STMicroelectronics with 75dB CMRR and 25µA quiescent current. TS339IPT offers lower power consumption but slightly reduced noise rejection. Both support -40°C ~ 125°C operation; TLC339MDR additionally supports -55°C lower limit.

Q: Why is CMP401GRUZ-REEL not recommended as a substitute?

A: The CMP401GRUZ-REEL operates on ±5V supply voltage, incompatible with the TLC339MN's 4V ~ 16V single supply specification. It also features CMOS/TTL output instead of pure open-drain, operates at -40°C minimum (not -55°C), and exhibits higher quiescent current consumption. Use only if your application can accommodate these parameter changes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. TLC339MDR, CMP401GRUZ-REEL, TS339CPT, and TS339IPT all carry ROHS3 Compliant certification, matching the original TLC339MN.

Q: Which substitute offers the lowest power consumption?

A: TS339IPT and TS339CPT both offer 25µA maximum quiescent current, significantly lower than the TLC339MN's 175µA. This represents a 7x reduction in standby power consumption, beneficial for battery-powered or energy-constrained applications.

Q: Can I use TS339CPT instead of TS339IPT?

A: TS339CPT and TS339IPT are electrically identical except for operating temperature range. TS339CPT operates 0°C ~ 70°C while TS339IPT operates -40°C ~ 125°C. Use TS339CPT only if your application operates within 0°C ~ 70°C; otherwise, specify TS339IPT for extended temperature coverage.

Q: What packaging considerations apply to surface-mount substitutes?

A: TLC339MDR uses 14-SOIC (0.154" width), while TS339CPT and TS339IPT use 14-TSSOP (0.173" width). Both are surface-mount formats requiring reflow soldering and PCB pad redesign. CMP401GRUZ-REEL uses 16-TSSOP, requiring additional PCB space. Verify footprint compatibility with your assembly process before design implementation.