NJU7102AD# General Purpose Comparator Equivalent & Substitute Parts

Part Overview

The NJU7102AD# is a dual-channel general purpose comparator manufactured by Nisshinbo Micro Devices Inc. in 8-DIP through-hole packaging. This device features CMOS, push-pull, and TTL output configurations suitable for analog signal comparison applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and long-term component availability.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	NJU7102AD#	—
Manufacturer	Nisshinbo Micro Devices Inc.	—
Category	Linear	—
Type	General Purpose Comparator	—
Number of Elements	2	—
Output Type	CMOS, Push-Pull, TTL	—
Voltage Supply Range	3V to 14V	Single/Dual (±)
Input Offset Voltage (Max)	12mV @ 5V	mV
Input Bias Current (Max)	1pA @ 5.5V	pA
Output Current (Typ)	20mA	mA
CMRR (Typ)	82dB	dB
Propagation Delay (Max)	3µs	µs
Operating Temperature	0°C to 70°C	°C
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the NJU7102AD# is determined by the following critical parameters:

Functional Equivalence Criteria:

Dual-channel (2 elements) general purpose comparator architecture
Output type compatibility: CMOS, push-pull, and TTL outputs
Supply voltage range overlap with 3V to 14V specification
Input offset voltage and input bias current within acceptable tolerance for analog comparison circuits
Propagation delay suitable for timing-critical applications

Package Compatibility Criteria:

Through-hole 8-DIP packaging (0.300", 7.62mm) for direct PCB footprint compatibility, or
Surface-mount alternatives (8-SOIC, 8-TSSOP, 8-SO) for designs permitting package migration

Compliance and Status Criteria:

RoHS3 compliance for regulatory alignment
Active or Last Time Buy product status for supply chain viability
REACH compliance status

Substitute parts are grouped into two categories:

Category 1: Direct Package Replacement (8-DIP Through-Hole)

TLC3702CP (Texas Instruments, 8-PDIP, Last Time Buy)
TLC3702IP (Texas Instruments, 8-PDIP, Last Time Buy)

Category 2: Package Migration Alternatives (Surface-Mount)

TLC3702CPS, TLC3702CPSR (8-SO/8-SOIC, Last Time Buy)
TLC3702CPW, TLC3702CPWR (8-TSSOP, Active/Obsolete)
TLC3702MDREP (8-SOIC, Active, Extended Temperature)
TLC3702QDRQ1 (8-SOIC, Active, Automotive Grade)
MAX962ESA+T (Analog Devices, 8-SOIC, Active, Beyond-the-Rails™ Series)

Parameter Comparison

Parameter	NJU7102AD#	TLC3702CP	TLC3702CPSR	TLC3702CPWR	TLC3702IP	MAX962ESA+T
Manufacturer	Nisshinbo	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Analog Devices
Number of Elements	2	2	2	2	2	2
Output Type	CMOS, Push-Pull, TTL	CMOS, Push-Pull, TTL	CMOS, Push-Pull, TTL	CMOS, Push-Pull, TTL	CMOS, Push-Pull, TTL	CMOS, TTL
Supply Voltage Range	3V ~ 14V	3V ~ 16V	3V ~ 16V	3V ~ 16V	3V ~ 16V	2.7V ~ 5.5V
Input Offset Voltage (Max)	12mV @ 5V	5mV @ 10V	5mV @ 10V	5mV @ 10V	5mV @ 10V	1.5mV @ 5V
Input Bias Current (Max)	1pA @ 5.5V	5pA @ 5V	5pA @ 5V	5pA @ 5V	5pA @ 5V	15µA @ 5V
Output Current (Typ)	20mA	20mA	20mA	20mA	20mA	—
CMRR (Typ)	82dB	84dB	84dB	84dB	84dB	80dB
Propagation Delay (Max)	3µs	4.5µs	4.5µs	4.5µs	4.5µs	7ns
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-DIP	8-DIP	8-SOIC	8-TSSOP	8-DIP	8-SOIC
Mounting Type	Through Hole	Through Hole	Surface Mount	Surface Mount	Through Hole	Surface Mount
Product Status	Obsolete	Last Time Buy	Last Time Buy	Active	Last Time Buy	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

For Direct Through-Hole Package Replacement:

Select TLC3702CP or TLC3702IP when PCB layout and through-hole mounting requirements are fixed. Both parts maintain 8-DIP form factor compatibility with NJU7102AD#. TLC3702CP is available in higher quantity (27,622 pcs) with Last Time Buy status. TLC3702IP offers extended operating temperature range (-40°C to 85°C) compared to the original specification (0°C to 70°C), providing broader application support. Both are RoHS3 compliant and REACH unaffected.

For Surface-Mount Package Migration:

Select TLC3702CPWR for active production designs requiring surface-mount technology. This part is currently Active with 19,400 pcs inventory, ensuring long-term availability. It maintains electrical compatibility with NJU7102AD# while offering compact 8-TSSOP packaging (0.173", 4.40mm width). RoHS3 compliance and REACH unaffected status align with modern regulatory requirements.

For Extended Temperature Applications:

Select TLC3702MDREP (8-SOIC, -55°C to 125°C) or TLC3702QDRQ1 (8-SOIC, -40°C to 125°C, Automotive Grade, AEC-Q100 qualified) when operating temperature range exceeds the original 0°C to 70°C specification. Both are Active products with RoHS3 compliance.

For Lowest Propagation Delay:

Select MAX962ESA+T (Analog Devices, 7ns max propagation delay) when timing-critical applications require faster response. This part operates within 2.7V to 5.5V supply range, suitable for low-voltage systems. Note: Supply voltage range is narrower than NJU7102AD# (3V to 14V), requiring circuit voltage verification.

Compliance Verification:

All recommended substitutes are RoHS3 compliant and REACH unaffected, meeting current regulatory standards. Texas Instruments TLC3702 series parts are available in multiple packaging options with consistent electrical performance across variants.

Frequently Asked Questions (FAQ)

Q1: Can TLC3702CP directly replace NJU7102AD# without PCB modification?

A: Yes. TLC3702CP maintains identical 8-DIP (0.300", 7.62mm) through-hole packaging and pinout compatibility. Electrical parameters are compatible within design tolerances. No PCB layout changes are required for direct substitution.

Q2: What is the key difference between TLC3702CP and TLC3702CPWR?

A: TLC3702CP uses 8-DIP through-hole packaging (Last Time Buy status), while TLC3702CPWR uses 8-TSSOP surface-mount packaging (Active status). Electrical specifications are identical. TLC3702CPWR offers superior long-term availability due to Active product status and higher inventory (19,400 pcs vs. 27,622 pcs for CP, but CPWR is actively produced).

Q3: Is MAX962ESA+T a suitable replacement for all NJU7102AD# applications?

A: MAX962ESA+T is functionally equivalent for dual-channel general purpose comparison. However, its supply voltage range (2.7V to 5.5V) is narrower than NJU7102AD# (3V to 14V). Verify circuit supply voltage before selection. MAX962ESA+T offers superior propagation delay (7ns vs. 3µs) and lower input offset voltage (1.5mV vs. 12mV), making it suitable for precision timing applications within its voltage range.

Q4: Why do TLC3702 variants have different product statuses (Active vs. Last Time Buy)?

A: Product status reflects manufacturing lifecycle. TLC3702CPWR (8-TSSOP, Active) represents current production, while TLC3702CP (8-DIP, Last Time Buy) indicates Texas Instruments is discontinuing this package variant. For new designs, prioritize Active status parts (TLC3702CPWR, TLC3702IPWR, TLC3702MDREP, TLC3702QDRQ1) for supply chain continuity.

Q5: What is the significance of AEC-Q100 qualification on TLC3702QDRQ1?

A: AEC-Q100 qualification indicates automotive-grade reliability testing per Automotive Electronics Council standards. TLC3702QDRQ1 is suitable for automotive and mission-critical applications requiring enhanced reliability documentation. This qualification is not required for general industrial or consumer applications.

Q6: Can I use TLC3702MDREP in place of TLC3702CP for extended temperature operation?

A: Yes, with package migration consideration. TLC3702MDREP extends operating temperature to -55°C to 125°C (vs. TLC3702CP at 0°C to 70°C) and uses 8-SOIC surface-mount packaging instead of 8-DIP through-hole. Electrical performance is equivalent. PCB redesign is required for surface-mount implementation.

Q7: What does "Last Time Buy" status mean for component selection?

A: Last Time Buy indicates the manufacturer has announced discontinuation. Existing inventory is available for purchase, but no future production is planned. For long-term production requirements, transition to Active status alternatives (TLC3702CPWR, TLC3702IPWR, MAX962ESA+T) to ensure supply continuity beyond the Last Time Buy window.

Q8: Are all substitute parts REACH compliant?

A: Yes. All recommended substitutes (TLC3702 series and MAX962ESA+T) are REACH unaffected, meeting European Union chemical safety regulations. NJU7102AD# REACH status is not specified in available documentation.

Q9: Which substitute offers the best balance of availability and compatibility?

A: TLC3702CPWR provides optimal balance: Active product status ensures ongoing availability, 8-TSSOP surface-mount packaging supports modern manufacturing, 19,400 pcs inventory, RoHS3 compliance, and electrical equivalence to NJU7102AD#. For through-hole requirement, TLC3702IP offers extended temperature range (-40°C to 85°C) with 1,445 pcs inventory and Last Time Buy status.

Q10: How do input bias current differences affect circuit design?

A: NJU7102AD# specifies 1pA input bias current, while TLC3702 variants specify 5pA. This 5× difference is negligible for most general purpose comparison circuits. MAX962ESA+T specifies 15µA, which is significant and may require input impedance adjustment in high-impedance circuits. Verify input source impedance compatibility before selecting MAX962ESA+T.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message