ALD2332APAL Equivalent & Substitute Parts

Part Overview

The ALD2332APAL is a general-purpose dual comparator IC manufactured by Advanced Linear Devices Inc., housed in an 8-DIP through-hole package. This device features CMOS, NMOS, push-pull, and TTL output configurations, operating across a supply voltage range of 4V to 10V (single supply) or ±2V to ±5V (dual supply). The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are necessary when through-hole 8-DIP packaging is unavailable, when surface-mount alternatives are preferred for modern PCB designs, or when extended operating temperature ranges or enhanced electrical performance characteristics are required for specific applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	ALD2332APAL
Manufacturer	Advanced Linear Devices Inc.
Category	Linear
Type	General Purpose Comparator
Number of Elements	2
Output Type	CMOS, NMOS, Push-Pull, TTL
Voltage - Supply, Single/Dual (±)	4V ~ 10V, ±2V ~ 5V
Voltage - Input Offset (Max)	0.5mV @ 5V
Current - Input Bias (Max)	20pA @ 5V
Current - Output (Typ)	50mA @ 5V
Current - Quiescent (Max)	500µA
CMRR, PSRR (Typ)	80dB CMRR, 75dB PSRR
Operating Temperature	0°C ~ 70°C
Package / Case	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the ALD2332APAL is determined by the following critical parameters:

Dual comparator configuration (2 elements minimum)
Output type compatibility (CMOS, push-pull, or rail-to-rail output acceptable)
Supply voltage overlap (minimum 4V to 10V single supply or equivalent dual supply range)
Input offset voltage (0.5mV to 15mV @ 5V acceptable)
Input bias current (10pA to 20pA @ 5V acceptable)
Output current capability (minimum 50mA typical)
Quiescent current (up to 650µA acceptable)
CMRR/PSRR performance (minimum 70dB CMRR, 65dB PSRR)
Operating temperature (0°C to 70°C minimum coverage required)
RoHS3 compliance (mandatory)

Substitute parts are grouped into three categories based on packaging and performance characteristics:

Group 1: Surface-Mount DFN Packages (LTC6702 Series) – Direct functional equivalents with enhanced integration density, suitable for modern PCB designs requiring compact footprints.

Group 2: Surface-Mount SOT-23 Packages (MAX9017, MAX9019, TLV3502 Series) – Compact alternatives with extended temperature ranges and rail-to-rail output, ideal for space-constrained applications.

Group 3: Surface-Mount SOIC/uMAX Packages (MAX976, TLV3492 Series) – Standard surface-mount options with varying performance characteristics and temperature ratings.

Parameter Comparison

Parameter	ALD2332APAL	LTC6702CDC#TRPBF	LTC6702HDC#TRPBF	LTC6702IDC#TRPBF	MAX9017BEKA+T	MAX9019EKA+T	MAX976EUA+	TLV3492AMDREP	TLV3502AID	TLV3502AIDCNT	TLV3502AQDCNRQ1
Manufacturer	Advanced Linear Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Number of Elements	2	2	2	2	2	2	2	2	2	2	2
Output Type	CMOS, NMOS, Push-Pull, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL
Voltage - Supply (V)	4~10, ±2~5	1.7~5.5	1.7~5.5	1.7~5.5	1.8~5.5	1.8~5.5	2.7~5.5	1.8~5.5	2.7~5.5, ±1.35~2.75	2.7~5.5, ±1.35~2.75	2.7~5.5, ±1.35~2.75
Input Offset (mV @ 5V)	0.5	4.6	4.6	4.6	5	5	2	15	6.5	6.5	6.5
Input Bias (pA @ 5V)	20	—	—	—	0.001	0.001	0.075	10	10	10	10
Output Current (mA @ 5V)	50	—	—	—	50	50	—	—	—	—	—
Quiescent Current (µA)	500	32	32	32	2.8	2	650	2.1	5	5	5
CMRR (dB)	80	70	70	70	—	—	95	74	70	70	70
PSRR (dB)	75	65	65	65	80	80	100	69.12	100	100	80
Operating Temperature (°C)	0~70	0~70	-40~125	-40~85	-40~85	-40~85	-40~85	-55~125	-40~125	-40~125	-40~125
Package / Case	8-DIP	8-DFN (2x2)	8-DFN (2x2)	8-DFN (2x2)	SOT-23-8	SOT-23-8	8-TSSOP/MSOP	8-SOIC	8-SOIC	SOT-23-8	SOT-23-8
Mounting Type	Through Hole	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, meeting baseline regulatory requirements for modern electronics manufacturing.

For direct through-hole replacement: No surface-mount alternatives exist that maintain the 8-DIP form factor. If through-hole mounting is mandatory, the ALD2332APAL remains the only option.

For surface-mount migration with compact footprint: The LTC6702 series (CDC, HDC, IDC variants) provides the smallest package profile (8-DFN 2x2mm) with supply voltage compatibility down to 1.7V. The CDC variant maintains the 0°C to 70°C temperature range matching the original part. The HDC and IDC variants extend temperature coverage to -40°C to 125°C and -40°C to 85°C respectively, suitable for industrial and automotive applications.

For standard surface-mount SOIC packaging: The TLV3502 series offers the widest inventory availability (17,350 to 23,400 units) across multiple packaging options (8-SOIC and SOT-23-8). The AQDCNRQ1 variant includes AEC-Q100 automotive qualification. All TLV3502 variants support extended temperature ranges (-40°C to 125°C) and dual supply operation (±1.35V to ±2.75V).

For enhanced performance characteristics: The MAX976EUA+ delivers superior CMRR (95dB) and PSRR (100dB) performance with the fastest propagation delay (28ns), though quiescent current is elevated at 650µA. The TLV3492AMDREP extends temperature range to -55°C to 125°C for extreme environment applications.

For low-power applications: The MAX9019EKA+ and MAX9017BEKA+ minimize quiescent current (2µA and 2.8µA respectively) with integrated voltage reference capability in the MAX9017 variant.

Frequently Asked Questions (FAQ)

Q: Can I directly replace an 8-DIP ALD2332APAL with a surface-mount alternative on the same PCB?

A: No. The ALD2332APAL uses through-hole 8-DIP packaging (0.300" lead spacing), while all substitute parts use surface-mount packages (DFN, SOT-23, SOIC, or TSSOP). PCB redesign is required to accommodate surface-mount footprints. Adapter boards or socket solutions are not recommended for production designs.

Q: Which substitute part has the closest electrical performance to the ALD2332APAL?

A: The LTC6702CDC#TRPBF matches the original operating temperature range (0°C to 70°C) and maintains comparable CMRR/PSRR specifications (70dB/65dB vs. 80dB/75dB). However, input offset voltage increases from 0.5mV to 4.6mV. The MAX976EUA+ offers superior CMRR (95dB) and PSRR (100dB) with lower input offset (2mV), but operates at higher quiescent current (650µA vs. 500µA).

Q: Are all substitute parts compatible with both single-supply (4V to 10V) and dual-supply (±2V to ±5V) operation?

A: No. The LTC6702 series supports 1.7V to 5.5V single supply only. The TLV3502 series explicitly supports dual supply operation (±1.35V to ±2.75V) in addition to single supply (2.7V to 5.5V). The MAX9017 and MAX9019 support 1.8V to 5.5V single supply. Verify your specific supply voltage requirements before selection.

Q: What is the significance of the LTC6702HDC vs. LTC6702IDC temperature rating difference?

A: The HDC variant operates across -40°C to 125°C (industrial/automotive range), while the IDC variant operates across -40°C to 85°C (commercial/industrial range). The CDC variant matches the original 0°C to 70°C specification. Select based on your application's thermal environment. Hysteresis differs slightly (8.2mV for HDC vs. 7.2mV for CDC/IDC).

Q: Is the TLV3502AQDCNRQ1 suitable for automotive applications?

A: Yes. The AQDCNRQ1 variant carries AEC-Q100 automotive qualification and is available in high volume (23,400 units). It maintains the same electrical specifications as other TLV3502 variants (6.5mV input offset, 10pA input bias, 10ns propagation delay) across the -40°C to 125°C temperature range.

Q: What is the primary trade-off when selecting the MAX976EUA+ over the TLV3502 series?

A: The MAX976EUA+ delivers superior AC performance (95dB CMRR, 100dB PSRR, 28ns propagation delay) but consumes significantly higher quiescent current (650µA vs. 5µA for TLV3502). Select MAX976 for high-speed, high-performance applications where power consumption is not critical. Select TLV3502 for battery-powered or low-power applications.

Q: Can I use the LTC6702 series in applications requiring TTL output compatibility?

A: Yes. The LTC6702 series explicitly supports TTL output type alongside CMOS and push-pull configurations. However, verify your specific TTL voltage thresholds and loading requirements against the datasheet specifications.

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