ALD2332PAL Equivalent & Substitute Parts

Part Overview

The ALD2332PAL is a dual-channel general-purpose comparator manufactured by Advanced Linear Devices Inc. in 8-DIP through-hole packaging. This device operates across supply voltages of 4V to 10V (single supply) or ±2V to ±5V (dual supply), with CMOS, NMOS, push-pull, and TTL output configurations. The part is currently in active production status with 1164 units in stock.

Substitute parts are necessary when the original ALD2332PAL becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when enhanced performance specifications are needed for specific application requirements.

Key Parameters

Parameter	ALD2332PAL
Manufacturer	Advanced Linear Devices Inc.
Category	Linear Comparator
Number of Elements	2
Output Type	CMOS, NMOS, Push-Pull, TTL
Voltage Supply (Single/Dual)	4V ~ 10V, ±2V ~ 5V
Input Offset Voltage (Max)	2mV @ 5V
Input Bias Current (Max)	20pA @ 5V
Output Current (Typ)	50mA @ 5V
Quiescent Current (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 of the ALD2332PAL is determined by the following critical parameters:

Dual-channel configuration: All substitutes must provide exactly 2 independent comparator elements
Output stage compatibility: Push-pull and TTL output types are required for direct functional replacement
Supply voltage range: Minimum overlap with 4V to 10V single supply or ±2V to ±5V dual supply operation
Input offset voltage: Maximum 2mV specification at rated supply voltage ensures precision matching
Quiescent current: Maximum 500µA specification for low-power applications
Operating temperature range: Minimum 0°C to 70°C overlap required
Package compatibility: Through-hole 8-DIP format for direct PCB footprint compatibility, or surface-mount alternatives for redesigned layouts

Substitutes are grouped into two categories: direct pin-compatible replacements (8-DIP through-hole) and functional equivalents with alternative packaging (surface-mount 8-SOIC, 8-DFN, SOT-23-8).

Parameter Comparison

Parameter	ALD2332PAL	TLV3702IP	TLV3702CD	TLV3492AID	LTC6702CDC#TRMPBF	MAX9017AEKA+T	MAX976ESA+T
Manufacturer	Advanced Linear Devices	Texas Instruments	Texas Instruments	Texas Instruments	Analog Devices	Analog Devices/Maxim	Analog Devices/Maxim
Number of Elements	2	2	2	2	2	2	2
Output Type	CMOS, NMOS, Push-Pull, TTL	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail
Voltage Supply (Single/Dual)	4V ~ 10V, ±2V ~ 5V	2.7V ~ 16V, ±1.35V ~ 8V	2.5V ~ 16V, ±1.25V ~ 8V	1.8V ~ 5.5V	1.7V ~ 5.5V	1.8V ~ 5.5V	2.7V ~ 5.5V
Input Offset Voltage (Max)	2mV @ 5V	5mV @ 15V	5mV @ 15V	15mV @ 5.5V	4.6mV @ 3V	5mV @ 5V	2mV @ 5V
Input Bias Current (Max)	20pA @ 5V	250pA @ 15V	250pA @ 15V	10pA @ 5.5V	—	0.001µA @ 5V	0.075µA @ 5.5V
Output Current (Typ)	50mA @ 5V	10mA	10mA	—	—	50mA	—
Quiescent Current (Max)	500µA	1µA	1µA	1.2µA	32µA	2.8µA	650µA
CMRR / PSRR (Typ)	80dB CMRR, 75dB PSRR	88dB CMRR, 105dB PSRR	88dB CMRR, 105dB PSRR	74dB CMRR, 69.12dB PSRR	70dB CMRR, 65dB PSRR	80dB PSRR	95dB CMRR, 100dB PSRR
Operating Temperature	0°C ~ 70°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-WFDFN Exposed Pad	SOT-23-8	8-SOIC (0.154", 3.90mm)
Mounting Type	Through Hole	Through Hole	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
Product Status	Active	Last Time Buy	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Pin-Compatible Replacement (8-DIP Through-Hole)

TLV3702IP is the only direct pin-compatible substitute with matching 8-DIP through-hole packaging. This part maintains functional equivalence with extended operating temperature range (-40°C to 125°C) and superior CMRR/PSRR specifications (88dB CMRR, 105dB PSRR). However, TLV3702IP carries a Last Time Buy status, indicating limited future availability. This part is suitable for applications requiring through-hole mounting without PCB redesign.

Surface-Mount Alternatives (Functional Equivalents)

For applications permitting PCB layout redesign, surface-mount alternatives offer active production status and enhanced specifications:

MAX976ESA+T (8-SOIC): Provides the closest input offset voltage match (2mV @ 5V) and highest CMRR/PSRR performance (95dB CMRR, 100dB PSRR). Operating temperature extends to -40°C to 85°C. This part is recommended for precision applications requiring superior noise rejection.
TLV3492AID (8-SOIC): Offers extended operating temperature range (-40°C to 125°C) with active production status. Input offset voltage is 15mV @ 5.5V, which exceeds the ALD2332PAL specification but remains acceptable for general-purpose applications.
LTC6702CDC#TRMPBF (8-DFN): Provides the lowest quiescent current (32µA) among substitutes, suitable for battery-powered applications. Input offset voltage is 4.6mV @ 3V with 70dB CMRR and 65dB PSRR.
MAX9017AEKA+T (SOT-23-8): Includes integrated voltage reference functionality, extending application flexibility. Quiescent current is 2.8µA with 80dB PSRR specification. Operating temperature range is -40°C to 85°C.

All substitute parts maintain ROHS3 compliance and EAR99 export classification matching the original ALD2332PAL.

Frequently Asked Questions (FAQ)

Q: Can TLV3702CD be used as a direct replacement for ALD2332PAL?

A: TLV3702CD is functionally equivalent but not pin-compatible. It uses 8-SOIC surface-mount packaging instead of 8-DIP through-hole. The part is obsolete, making it unsuitable for new designs. TLV3702IP provides pin-compatible replacement in 8-DIP format, though it carries Last Time Buy status.

Q: What is the key difference between through-hole and surface-mount substitutes?

A: Through-hole substitutes (TLV3702IP) mount directly into existing PCB holes without layout modification. Surface-mount substitutes (MAX976ESA+T, TLV3492AID, LTC6702CDC#TRMPBF, MAX9017AEKA+T) require PCB redesign but offer improved performance specifications, lower quiescent current, and active production status.

Q: Which substitute offers the best performance match to ALD2332PAL?

A: MAX976ESA+T provides the closest input offset voltage specification (2mV @ 5V) and superior CMRR/PSRR performance (95dB CMRR, 100dB PSRR). However, it requires PCB redesign due to 8-SOIC surface-mount packaging.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance matching the original ALD2332PAL specification.

Q: What is the significance of "Last Time Buy" and "Obsolete" product status?

A: Last Time Buy (TLV3702IP) indicates the manufacturer will cease production after a specified date, with limited inventory remaining. Obsolete (TLV3702CD) means the part is no longer manufactured or supported. For new designs, select parts with Active status: TLV3492AID, LTC6702CDC#TRMPBF, MAX9017AEKA+T, or MAX976ESA+T.

Q: Can substitutes operate at the same supply voltage as ALD2332PAL?

A: All substitutes support the 4V to 10V single-supply range of ALD2332PAL. However, some substitutes extend the lower limit to 1.7V or 1.8V, enabling operation in lower-voltage applications. Verify specific supply voltage requirements for your application before selection.

Q: What packaging considerations apply when selecting a substitute?

A: Through-hole substitutes (TLV3702IP) require no PCB modification. Surface-mount substitutes require PCB redesign and appropriate soldering equipment. 8-SOIC packages (MAX976ESA+T, TLV3492AID, TLV3702CD) are standard in modern manufacturing. 8-DFN (LTC6702CDC#TRMPBF) and SOT-23-8 (MAX9017AEKA+T) packages are smaller, reducing PCB area but requiring precision placement.

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