TLC3704CPW Equivalent & Substitute Parts

Part Overview

The TLC3704CPW is a general-purpose CMOS comparator IC featuring four independent comparators in a 14-TSSOP surface-mount package. Manufactured by Texas Instruments under the LinCMOS™ series, this component operates across a wide supply voltage range of 3V to 16V with push-pull TTL-compatible outputs. The device is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is essential for design continuity, long-term component availability, and supply chain resilience.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	TLC3704CPW
Category	Linear - Comparator
Number of Elements	4
Package Type	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Output Type	CMOS, Push-Pull, TTL
Supply Voltage Range	3V ~ 16V
Input Offset Voltage (Max)	5mV @ 10V
Input Bias Current (Max)	5pA @ 5V
Output Current (Typ)	20mA
Quiescent Current (Max)	100µA
CMRR (Typ)	84dB
Propagation Delay (Max)	4.5µs
Operating Temperature	0°C ~ 70°C
RoHS Status	ROHS3 Compliant
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution eligibility for the TLC3704CPW is determined by the following critical parameters:

Primary Compatibility Criteria:

Number of comparator elements: 4
Package type: 14-TSSOP surface-mount form factor
Output type: CMOS/TTL compatible
Supply voltage range: Minimum 3V operation capability
Input offset voltage: ≤5mV @ 10V
Input bias current: ≤5pA @ 5V
Output current capability: ≥20mA typical

Substitution Categories:

Category 1 - Direct Equivalent (Same Packaging, Same Manufacturer): TLC3704CPWR is the tape-and-reel packaging variant of the same base product (TLC3704). Electrical specifications are identical; the only difference is packaging format (Tube vs. Tape & Reel).

Category 2 - Functional Equivalent (Different Packaging, Different Manufacturer): TS339CPT and TS339IPT (STMicroelectronics) provide four-element comparators in 14-TSSOP packages with compatible electrical performance. Both maintain the 14-TSSOP form factor and support the required supply voltage range. Output type differs (Open-Drain vs. Push-Pull), requiring circuit-level evaluation.

Category 3 - Partial Equivalent (Different Package, Different Manufacturer): MAX964EEE+T (Analog Devices Inc./Maxim Integrated) provides four comparators but in a 16-QSOP package. Supply voltage range is narrower (2.7V ~ 5.5V), limiting applicability to designs operating above 5.5V.

Parameter Comparison

Parameter	TLC3704CPW	TLC3704CPWR	TS339CPT	TS339IPT	MAX964EEE+T
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	Analog Devices Inc./Maxim
Number of Elements	4	4	4	4	4
Package Type	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	16-QSOP
Output Type	CMOS, Push-Pull, TTL	CMOS, Push-Pull, TTL	CMOS, Open-Drain	CMOS, Open-Drain	CMOS, TTL
Supply Voltage Range	3V ~ 16V	3V ~ 16V	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 5.5V
Input Offset Voltage (Max)	5mV @ 10V	5mV @ 10V	5mV @ 10V	5mV @ 10V	1.5mV @ 5V
Input Bias Current (Max)	5pA @ 5V	5pA @ 5V	1pA @ 5V	1pA @ 5V	15µA @ 5V
Output Current (Typ)	20mA	20mA	20mA	20mA	-
Quiescent Current (Max)	100µA	100µA	25µA	25µA	9mA
CMRR (Typ)	84dB	84dB	75dB	75dB	80dB
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 85°C
Product Status	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TLC3704CPWR (Texas Instruments): Recommended as the primary substitute. Identical electrical specifications and 14-TSSOP package footprint ensure direct functional replacement. The only difference is packaging format (Tape & Reel vs. Tube), which does not affect circuit performance. Product status is Active, ensuring long-term availability. This is the optimal choice for designs requiring no circuit modifications.

TS339CPT and TS339IPT (STMicroelectronics): Suitable substitutes for applications where open-drain output topology is acceptable. Both maintain the 14-TSSOP package and support the full 3V to 16V supply range. TS339IPT offers extended operating temperature range (-40°C ~ 125°C) compared to TS339CPT (0°C ~ 70°C), making it preferable for industrial or automotive applications. Lower quiescent current (25µA vs. 100µA) provides power efficiency benefits. Circuit design must accommodate open-drain output characteristics, which differ from the push-pull output of the TLC3704CPW.

MAX964EEE+T (Analog Devices Inc./Maxim Integrated): Not recommended as a direct substitute due to package incompatibility (16-QSOP vs. 14-TSSOP) and restricted supply voltage range (2.7V ~ 5.5V). Applicable only to designs operating exclusively within the 2.7V to 5.5V range and where PCB layout modifications to accommodate the 16-pin package are feasible. Superior input offset voltage (1.5mV) and faster propagation delay (7ns) may provide performance benefits in precision applications, but these advantages do not justify the integration complexity for most applications.

Frequently Asked Questions (FAQ)

Q: Can TLC3704CPWR be used as a direct replacement for TLC3704CPW? A: Yes. TLC3704CPWR is electrically identical to TLC3704CPW. The difference is packaging format: TLC3704CPW is supplied in Tube packaging, while TLC3704CPWR is supplied in Tape & Reel format. Both are manufactured by Texas Instruments and meet identical electrical specifications. No circuit modifications are required.

Q: What is the key difference between TLC3704CPW and TS339 series comparators? A: The primary difference is output type. TLC3704CPW features push-pull TTL-compatible outputs, while TS339CPT and TS339IPT feature open-drain outputs. Open-drain outputs require external pull-up resistors to establish high-level voltage. Circuit design must be evaluated to determine compatibility. Both maintain the 14-TSSOP package and support 3V to 16V supply operation.

Q: Why is MAX964EEE+T not recommended as a substitute? A: MAX964EEE+T uses a 16-QSOP package, which is physically incompatible with the 14-TSSOP footprint of TLC3704CPW. Additionally, its supply voltage range (2.7V ~ 5.5V) is narrower than the TLC3704CPW (3V ~ 16V), making it unsuitable for applications requiring operation above 5.5V. PCB redesign would be necessary for integration.

Q: Are all substitute parts RoHS3 compliant? A: Yes. TLC3704CPWR, TS339CPT, TS339IPT, and MAX964EEE+T are all ROHS3 compliant, matching the compliance status of the original TLC3704CPW.

Q: Which substitute offers the widest operating temperature range? A: TS339IPT supports -40°C to 125°C, providing the widest operating temperature range among all listed substitutes. This makes it suitable for industrial, automotive, and extended-temperature applications. TLC3704CPWR and TS339CPT are limited to 0°C to 70°C.

Q: What is the impact of lower quiescent current in TS339 comparators? A: TS339CPT and TS339IPT consume 25µA maximum quiescent current compared to 100µA for TLC3704CPW. This 75% reduction in standby power consumption provides significant benefits in battery-powered or power-constrained applications. The trade-off is the requirement for external pull-up resistors due to open-drain output topology.

Q: Can multiple substitute parts be used interchangeably in the same design? A: TLC3704CPWR can be used interchangeably with TLC3704CPW without any circuit modifications. TS339CPT and TS339IPT can be used interchangeably with each other, but both require circuit evaluation due to open-drain output differences. MAX964EEE+T requires PCB redesign and is not interchangeable with other options without significant modifications.

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