TSH72CDT Equivalent & Substitute Parts

Part Overview

The TSH72CDT is a general-purpose operational amplifier manufactured by STMicroelectronics, featuring dual circuits in an 8-SO surface mount package. This device is classified as obsolete, which necessitates identification of functionally equivalent active alternatives for new designs and ongoing production requirements. The TSH72CDT operates across a 3 V to 12 V supply range with rail-to-rail output capability, making it suitable for low-voltage analog signal processing applications.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TSH72CDT	—
Manufacturer	STMicroelectronics	—
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	12	V
Operating Temperature	0 ~ 70	°C
Slew Rate	118	V/µs
Gain Bandwidth Product	65	MHz
-3dB Bandwidth	100	MHz
Current - Input Bias	6	µA
Voltage - Input Offset	1.1	mV
Current - Supply	8.2	mA
Current - Output / Channel	55	mA
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TSH72CDT is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Dual-circuit configuration (2 circuits per package)
Rail-to-rail output capability
8-SOIC surface mount package (0.154", 3.90mm width)
Supply voltage range: 3 V to 12 V minimum overlap
Operating temperature range that encompasses or exceeds the original 0°C to 70°C specification

Electrical Performance Considerations: Substitute parts must maintain functional equivalence within the following ranges:

Slew Rate: 118 V/µs or greater
Gain Bandwidth Product: 65 MHz or greater
-3dB Bandwidth: 100 MHz or greater
Current - Input Bias: 6 µA or lower
Voltage - Input Offset: 1.1 mV or lower
Current - Supply: 8.2 mA or lower
Current - Output / Channel: 55 mA or greater

Active Substitute Parts Identified:

The following Analog Devices and Texas Instruments components meet the mandatory compatibility criteria and are classified as active products:

AD8042ARZ / AD8042ARZ-REEL / AD8042ARZ-REEL7
AD8052ARZ / AD8052ARZ-REEL / AD8052ARZ-REEL7
AD8092ARZ / AD8092ARZ-REEL / AD8092ARZ-REEL7
LMH6643MA/NOPB

These parts are grouped by manufacturer and base product number, with packaging variants (tube, cut tape, digi-reel, tape & reel) available for each base model.

Parameter Comparison

Parameter	TSH72CDT	AD8042ARZ	AD8052ARZ	AD8092ARZ	LMH6643MA/NOPB
Manufacturer	STMicroelectronics	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Active
Number of Circuits	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	3 V	3 V	3 V	3 V	2.7 V
Voltage - Supply Span (Max)	12 V	12 V	12 V	12 V	12.8 V
Operating Temperature	0 ~ 70°C	-40 ~ 85°C	-40 ~ 125°C	-40 ~ 85°C	-40 ~ 85°C
Slew Rate	118 V/µs	225 V/µs	170 V/µs	170 V/µs	135 V/µs
Gain Bandwidth Product	65 MHz	90 MHz	—	—	—
-3dB Bandwidth	100 MHz	170 MHz	110 MHz	110 MHz	130 MHz
Current - Input Bias	6 µA	1.2 µA	1.4 µA	1.4 µA	1.6 µA
Voltage - Input Offset	1.1 mV	3 mV	1.7 mV	1.8 mV	1 mV
Current - Supply	8.2 mA	6 mA (x2 Channels)	4.8 mA (x2 Channels)	4.8 mA (x2 Channels)	2.7 mA (x2 Channels)
Current - Output / Channel	55 mA	50 mA	45 mA	45 mA	75 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The AD8052ARZ family (AD8052ARZ, AD8052ARZ-REEL, AD8052ARZ-REEL7) and AD8092ARZ family (AD8092ARZ, AD8092ARZ-REEL, AD8092ARZ-REEL7) represent the most direct functional equivalents to the TSH72CDT. These devices maintain identical package geometry, dual-circuit configuration, and rail-to-rail output characteristics. The AD8052ARZ series extends the maximum operating temperature to 125°C, providing enhanced thermal margin for applications requiring extended temperature operation. All variants are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity classification, matching the original part's environmental specifications.

Secondary Substitutes (Enhanced Performance):

The AD8042ARZ family (AD8042ARZ, AD8042ARZ-REEL, AD8042ARZ-REEL7) offers superior slew rate (225 V/µs) and gain bandwidth product (90 MHz) compared to the TSH72CDT, with lower input bias current (1.2 µA). This family is suitable for applications requiring higher bandwidth performance while maintaining the same package footprint and supply voltage compatibility. Operating temperature range extends to -40°C to 85°C.

The LMH6643MA/NOPB from Texas Instruments provides the lowest supply current (2.7 mA per channel) and highest output current capability (75 mA per channel), with extended supply voltage range (2.7 V to 12.8 V). This device is appropriate for power-sensitive applications and designs requiring enhanced output drive capability.

Packaging Variants:

All identified substitute parts are available in multiple packaging configurations:

Tube packaging for manual assembly
Cut Tape (CT) & Digi-Reel® for semi-automated pick-and-place operations
Tape & Reel (TR) for fully automated assembly lines

Selection of packaging variant depends on production volume and assembly methodology rather than electrical performance.

Compliance and Regulatory Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original TSH72CDT. All components carry EAR99 export classification and HTSUS code 8542.33.0001, ensuring regulatory equivalence for procurement and supply chain purposes.

Frequently Asked Questions (FAQ)

Q: Can the AD8042ARZ directly replace the TSH72CDT in existing PCB designs?

A: Yes. The AD8042ARZ shares identical 8-SOIC package geometry (0.154", 3.90mm width) and pinout with the TSH72CDT. No PCB layout modifications are required. The device operates within the same 3 V to 12 V supply range and provides dual rail-to-rail amplifier circuits. However, the AD8042ARZ exhibits higher input offset voltage (3 mV versus 1.1 mV), which may require circuit-level evaluation in precision applications.

Q: What is the difference between AD8052ARZ, AD8052ARZ-REEL, and AD8052ARZ-REEL7?

A: These three part numbers represent the same electrical device with different packaging and delivery formats. AD8052ARZ is supplied in tube packaging for manual assembly. AD8052ARZ-REEL and AD8052ARZ-REEL7 are supplied on cut tape with digi-reel carriers for semi-automated and automated assembly processes. The electrical specifications, performance characteristics, and compliance certifications are identical across all three variants.

Q: Which substitute part offers the lowest power consumption?

A: The LMH6643MA/NOPB provides the lowest supply current at 2.7 mA per channel, compared to 8.2 mA for the TSH72CDT. This represents a 67% reduction in supply current, making it suitable for battery-powered and energy-constrained applications.

Q: Are all substitute parts rated for the same operating temperature range as the TSH72CDT?

A: No. The TSH72CDT operates from 0°C to 70°C. The AD8052ARZ and AD8052ARZ-REEL7 extend the maximum temperature to 125°C, while AD8042ARZ, AD8092ARZ, and LMH6643MA/NOPB are rated to 85°C. For applications requiring operation below 0°C or above 70°C, the extended-temperature variants (AD8052 series) are required.

Q: Can I use the LMH6643MA/NOPB in applications designed for the TSH72CDT?

A: Yes, with circuit-level evaluation. The LMH6643MA/NOPB provides superior performance in most parameters: lower supply current, higher output current capability, and lower input offset voltage. However, the minimum supply voltage is 2.7 V (versus 3 V for TSH72CDT), and the slew rate is 135 V/µs (versus 118 V/µs). These differences are generally advantageous but should be verified against specific application requirements.

Q: What is the inventory status of these substitute parts?

A: All identified substitute parts are classified as active products with current production and stock availability. Specific inventory quantities vary by part number and packaging variant, ranging from 1,339 to 33,368 units in stock across the substitute family.

Q: Are there any differences in RoHS or REACH compliance between the TSH72CDT and its substitutes?

A: No. The TSH72CDT and all identified substitute parts are ROHS3 compliant and REACH unaffected. All components carry identical EAR99 export classification and HTSUS code 8542.33.0001, ensuring regulatory equivalence for procurement purposes.

Q: Which substitute part has the highest slew rate?

A: The AD8042ARZ family provides the highest slew rate at 225 V/µs, compared to 118 V/µs for the TSH72CDT. This enhanced slew rate capability supports applications requiring faster signal transitions and higher frequency operation.

Q: Can I mix different packaging variants of the same substitute part in production?

A: Yes. AD8052ARZ, AD8052ARZ-REEL, and AD8052ARZ-REEL7 are electrically and functionally identical. Packaging variant selection is determined by assembly process requirements and production volume, not by electrical performance or compatibility. Mixed sourcing of packaging variants does not affect circuit performance or reliability.

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