TLC3704ID Equivalent & Substitute Parts

Part Overview

The TLC3704ID is a general-purpose CMOS comparator IC manufactured by Texas Instruments, featuring four independent comparators in a 14-SOIC surface-mount package. This device operates across a wide supply voltage range of 3V to 16V and delivers push-pull TTL-compatible outputs suitable for signal conditioning and threshold detection applications.

The TLC3704ID is currently in Last Time Buy status, indicating that Texas Instruments has discontinued this part number. Identifying functionally equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs or design revisions.

Key Parameters

Parameter	Value
Manufacturer Part Number	TLC3704ID
Manufacturer	Texas Instruments
Number of Elements	4
Output Type	CMOS, Push-Pull, TTL
Voltage - Supply, Single/Dual (±)	3V ~ 16V
Voltage - Input Offset (Max)	5mV @ 10V
Current - Input Bias (Max)	5pA @ 5V
Current - Output (Typ)	20mA
Current - Quiescent (Max)	125µA
CMRR, PSRR (Typ)	84dB CMRR
Propagation Delay (Max)	4.5µs
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TLC3704ID are evaluated based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Number of comparator elements (must be 4)
Package type and pin count (14-pin SOIC form factor)
Supply voltage range compatibility (minimum 3V to 16V overlap)
Output type compatibility (push-pull or open-drain/open-collector configurations)
Input offset voltage and bias current specifications
Operating temperature range coverage
RoHS3 compliance and MSL rating

Substitution Categories:

Category 1: Direct Pin-Compatible Substitutes (14-SOIC Package) Parts TLC3704IDR, TS339IDT, TS339CDT, and TS3704IDT maintain identical 14-SOIC packaging and pinout compatibility. These parts support the full 3V to 16V supply range and feature comparable input offset voltages (5mV @ 10V) and output drive capabilities (20mA typical).

Category 2: Functional Equivalents with Extended Supply Range (14-SOIC Package) The LM2901DR2G from onsemi provides four comparators in 14-SOIC packaging with an extended supply voltage range of 3V to 36V (±1.5V to 18V). This part features open-collector output configuration and higher quiescent current (2.5mA) compared to the TLC3704ID.

Category 3: Functional Equivalents with Package Variation (16-Pin Packages) The MAX964 series (MAX964EEE+, MAX964EEE+T, MAX964ESE+) from Analog Devices Inc./Maxim Integrated provides four comparators with enhanced specifications in 16-pin packages (16-QSOP or 16-SOIC). These parts operate within a narrower supply range (2.7V to 5.5V) but offer superior propagation delay (7ns) and lower input offset voltage (1.5mV @ 5V).

Parameter Comparison

Parameter	TLC3704ID	TLC3704IDR	LM2901DR2G	MAX964EEE+	MAX964ESE+	TS339IDT	TS3704IDT
Manufacturer	Texas Instruments	Texas Instruments	onsemi	Analog Devices/Maxim	Analog Devices/Maxim	STMicroelectronics	STMicroelectronics
Number of Elements	4	4	4	4	4	4	4
Output Type	CMOS, Push-Pull, TTL	CMOS, Push-Pull, TTL	CMOS, Open-Collector, TTL	CMOS, TTL	CMOS, TTL	CMOS, Open-Drain	CMOS, Push-Pull
Voltage - Supply (V)	3 ~ 16	3 ~ 16	3 ~ 36 (±1.5 ~ 18)	2.7 ~ 5.5	2.7 ~ 5.5	2.7 ~ 16 (±1.35 ~ 8)	2.7 ~ 16 (±1.35 ~ 8)
Voltage - Input Offset Max (mV)	5 @ 10V	5 @ 10V	7 @ 5V	1.5 @ 5V	1.5 @ 5V	5 @ 10V	5 @ 10V
Current - Input Bias Max (pA/µA)	5pA @ 5V	5pA @ 5V	0.25µA @ 5V	15µA @ 5V	15µA @ 5V	1pA @ 5V	1pA @ 5V
Current - Output Typ (mA)	20	20	16 @ 5V	—	—	20	20
Current - Quiescent Max (µA/mA)	125µA	125µA	2.5mA	9mA	9mA	25µA	25µA
CMRR Typ (dB)	84	84	—	80	80	75	80
Propagation Delay Max (µs/ns)	4.5µs	4.5µs	—	7ns	7ns	—	—
Operating Temperature (°C)	-40 ~ 85	-40 ~ 85	-40 ~ 105	-40 ~ 85	-40 ~ 85	0 ~ 70	-40 ~ 125
Package / Case	14-SOIC	14-SOIC	14-SOIC	16-QSOP	16-SOIC	14-SOIC	14-SOIC
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Recommended Primary Substitute: TLC3704IDR

The TLC3704IDR is the manufacturer-recommended substitute for the TLC3704ID. Both parts are manufactured by Texas Instruments, share identical electrical specifications, and maintain the same 14-SOIC package footprint. The TLC3704IDR is currently in Active product status with 4,642 units in stock, ensuring supply continuity. This part is ROHS3 compliant and carries MSL rating 1 (Unlimited), matching the original part's compliance profile.

Alternative Substitute: TS3704IDT (STMicroelectronics)

The TS3704IDT provides pin-compatible substitution in 14-SOIC packaging with push-pull output configuration. This part operates across the 2.7V to 16V supply range, covers the extended temperature range of -40°C to 125°C, and maintains comparable input offset voltage (5mV @ 10V) and output drive current (20mA). The TS3704IDT is Active status with 20,200 units available and is ROHS3 compliant.

Alternative Substitute: TS339IDT (STMicroelectronics)

The TS339IDT offers pin-compatible substitution with open-drain output configuration in 14-SOIC packaging. This part supports the 2.7V to 16V supply range and features an extended operating temperature range of -40°C to 125°C. Input offset voltage and output drive specifications are equivalent to the TLC3704ID. The TS339IDT is Active status with 15,753 units in stock and is ROHS3 compliant.

Extended Supply Range Alternative: LM2901DR2G (onsemi)

The LM2901DR2G provides four comparators in 14-SOIC packaging with an extended supply voltage range of 3V to 36V (±1.5V to 18V). This part features open-collector output configuration and supports an extended operating temperature range of -40°C to 105°C. The LM2901DR2G is suitable for applications requiring higher supply voltages. This part is Active status with 127,336 units in stock and is ROHS3 compliant.

High-Performance Alternative: MAX964ESE+ (Analog Devices Inc./Maxim Integrated)

The MAX964ESE+ provides four comparators in 16-SOIC packaging with superior propagation delay (7ns versus 4.5µs) and lower input offset voltage (1.5mV @ 5V). This part operates within the 2.7V to 5.5V supply range and is suitable for applications requiring faster response times and lower offset specifications. The MAX964ESE+ is Active status with 57,030 units in stock and is ROHS3 compliant. Note: This part requires PCB layout modification due to 16-pin packaging versus 14-pin original.

Frequently Asked Questions (FAQ)

Q: Can I directly replace TLC3704ID with TLC3704IDR without PCB modifications?

A: Yes. The TLC3704IDR is the direct manufacturer-recommended substitute with identical pinout, package footprint (14-SOIC), and electrical specifications. No PCB layout changes are required.

Q: What is the difference between push-pull and open-drain output configurations?

A: Push-pull outputs (TLC3704ID, TLC3704IDR, TS3704IDT) actively drive both high and low logic states. Open-drain outputs (TS339IDT, LM2901DR2G) require external pull-up resistors to achieve high logic states. Circuit design must account for this difference when selecting substitutes.

Q: Can I use MAX964ESE+ as a direct replacement for TLC3704ID?

A: The MAX964ESE+ provides functional equivalence but requires PCB redesign. The part uses 16-SOIC packaging (versus 14-SOIC original), resulting in different pinout and footprint. The supply voltage range is also narrower (2.7V to 5.5V versus 3V to 16V). Evaluate application requirements before selecting this substitute.

Q: Which substitute offers the widest supply voltage range?

A: The LM2901DR2G supports 3V to 36V (±1.5V to 18V) supply range, providing the widest operating envelope. This part is suitable for applications requiring extended supply voltage capability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TLC3704IDR, LM2901DR2G, MAX964 series, TS339IDT, TS3704IDT) are ROHS3 compliant with MSL rating 1 (Unlimited), matching the original TLC3704ID compliance profile.

Q: What is the temperature range difference between substitutes?

A: The TLC3704ID and TLC3704IDR operate from -40°C to 85°C. The TS3704IDT and TS339IDT extend to -40°C to 125°C. The LM2901DR2G covers -40°C to 105°C. The TS339CDT operates from 0°C to 70°C. Select based on application temperature requirements.

Q: Can I use TS339IDT in place of TLC3704ID if my circuit uses pull-up resistors?

A: Yes, with circuit modifications. The TS339IDT features open-drain outputs requiring external pull-up resistors, whereas the TLC3704ID uses push-pull outputs. If your design already incorporates pull-up resistors or can accommodate them, the TS339IDT is functionally compatible within the specified supply and temperature ranges.

Q: Which substitute has the lowest quiescent current?

A: The TS339IDT and TS3704IDT both feature 25µA maximum quiescent current, compared to 125µA for the TLC3704ID. The MAX964 series draws 9mA quiescent current. The LM2901DR2G draws 2.5mA. Select based on power consumption requirements.

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