TSH22IN Equivalent & Substitute Parts

Part Overview

The TSH22IN is a general-purpose operational amplifier manufactured by STMicroelectronics, configured as a dual-circuit (2-channel) device in an 8-Mini DIP through-hole package. This part is classified as obsolete, indicating discontinuation from active production. Identification of equivalent and substitute components is necessary to support legacy system maintenance, design updates, and procurement continuity where the original part is no longer available through standard distribution channels.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Slew Rate	15	V/µs
Gain Bandwidth Product	25	MHz
Current - Input Bias	100	nA
Voltage - Input Offset	2.5	mV
Current - Supply	2.15	mA
Current - Output / Channel	37	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	30	V
Operating Temperature Range	-40 to 125	°C
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TSH22IN is determined by strict alignment of electrical and mechanical parameters within the dual-circuit general-purpose operational amplifier category. The following criteria establish substitution validity:

Primary Substitution Criteria:

Number of Circuits: 2 (dual configuration required)
Package Type: 8-DIP through-hole format (0.300", 7.62mm)
Amplifier Classification: General Purpose or Audio (compatible functional categories)
Supply Voltage Range: Minimum 3V to 4V; Maximum 30V to 36V (overlapping operational envelope)
Operating Temperature: Minimum -40°C to 0°C; Maximum 85°C to 125°C (acceptable coverage)

Secondary Performance Parameters:

Slew Rate: 0.3V/µs to 400V/µs (wide range accommodates application-specific requirements)
Gain Bandwidth Product: 700 kHz to 45 MHz (performance scaling for different use cases)
Input Bias Current: 4 pA to 500 nA (low-noise to standard-performance variants)
Output Current per Channel: 37 mA to 55 mA (sufficient drive capability)

Substitute parts meeting these criteria are grouped by performance tier and operational characteristics to facilitate selection based on specific application requirements.

Parameter Comparison

Parameter	TSH22IN	CA3240AEZ	LM258P	LM833N/NOPB	LT1208CN8#PBF	LT1211ACN8#PBF	LT1211CN8#PBF	LT1213ACN8#PBF	LT1213CN8#PBF	LT1215CN8#PBF	LT1492CN8#PBF
Manufacturer	STMicroelectronics	Renesas Electronics	Texas Instruments	Texas Instruments	Linear Technology	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Amplifier Type	General Purpose	General Purpose	General Purpose	Audio	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Slew Rate (V/µs)	15	9	0.3	7	400	7	7	12	12	50	3
Gain Bandwidth Product (MHz)	25	4.5	0.7	15	45	14	14	28	28	23	5
Current - Input Bias (nA)	100	10	20	500	4000	45	50	70	90	420	45
Voltage - Input Offset (mV)	2.5	2	3	0.3	1	0.125	0.15	0.125	0.15	0.25	0.12
Current - Supply (mA)	2.15	8	0.5	5	7	1.8	1.8	3.4	3.4	4.75	0.5
Current - Output / Channel (mA)	37	40	40	40	40	50	50	50	50	50	55
Voltage - Supply Span Min (V)	3	4	3	30	5	2.5	2.5	2.5	2.5	2.5	2.5
Voltage - Supply Span Max (V)	30	36	32	30	30	36	36	36	36	36	36
Operating Temperature Min (°C)	-40	-40	-25	-40	0	-40	-40	-40	-40	0	0
Operating Temperature Max (°C)	125	85	85	85	70	85	85	85	85	70	70
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain active product status with current manufacturer support, ensuring long-term availability and supply chain stability. Selection among substitute components is determined by alignment with application-specific electrical requirements and environmental operating conditions.

Compliance and Certification: All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory status of the TSH22IN. Moisture sensitivity levels are uniformly rated at MSL 1 (Unlimited) or not applicable, indicating compatibility with standard handling and storage protocols.

Performance Tier Selection:

Low-Power, Low-Bandwidth Applications: LM258P and LT1492CN8#PBF are suitable for applications requiring minimal supply current consumption (0.5 mA) with reduced bandwidth requirements (0.7 MHz and 5 MHz respectively). These devices operate within the TSH22IN supply voltage envelope and maintain through-hole 8-DIP packaging.

Mid-Range Performance Applications: CA3240AEZ, LM833N/NOPB, LT1211ACN8#PBF, and LT1211CN8#PBF provide balanced performance characteristics with slew rates between 7V/µs and 9V/µs and gain bandwidth products between 4.5 MHz and 14 MHz. These parts support the full TSH22IN supply voltage range (3V to 30V minimum overlap) and extended temperature operation.

High-Performance Applications: LT1208CN8#PBF, LT1213ACN8#PBF, LT1213CN8#PBF, and LT1215CN8#PBF deliver enhanced slew rates (12V/µs to 50V/µs) and higher gain bandwidth products (23 MHz to 45 MHz). These devices support supply voltages down to 2.5V and maintain output current capability of 50 mA per channel.

Temperature Range Considerations: The TSH22IN operates to 125°C maximum. Substitute parts with maximum operating temperatures of 85°C or 70°C require thermal derating or alternative selection if the application demands the full TSH22IN temperature envelope. LT1215CN8#PBF and LT1492CN8#PBF are limited to 70°C maximum; LM258P is limited to 85°C maximum.

Frequently Asked Questions (FAQ)

Q: Can any 8-DIP dual operational amplifier substitute for the TSH22IN?

A: No. Substitution requires matching of specific electrical parameters within defined tolerances. The TSH22IN is a general-purpose amplifier with 2 circuits in 8-DIP packaging. Substitute parts must maintain the same circuit count, package format, and compatible supply voltage and temperature ranges. Audio-specific amplifiers (such as LM833N/NOPB) are included due to functional compatibility within the dual-circuit 8-DIP category, but application-specific performance characteristics must be evaluated.

Q: What is the significance of the TSH22IN being classified as obsolete?

A: Obsolete status indicates that STMicroelectronics has discontinued production and support for this part. Active substitute parts listed in this reference are manufactured by Renesas Electronics, Texas Instruments, Linear Technology, and Analog Devices Inc., all of which maintain current production and distribution networks. Selection of an active substitute ensures ongoing availability and manufacturer technical support.

Q: Are all substitute parts pin-compatible with the TSH22IN?

A: All substitute parts share the 8-DIP (0.300", 7.62mm) through-hole package format, which establishes mechanical and pin-count compatibility. However, electrical performance characteristics vary significantly. Direct functional substitution requires verification that the substitute part's slew rate, gain bandwidth product, input bias current, and supply current specifications align with circuit design requirements.

Q: Which substitute part most closely matches the TSH22IN performance profile?

A: LT1213CN8#PBF provides the closest performance alignment, with a slew rate of 12V/µs (compared to TSH22IN 15V/µs) and gain bandwidth product of 28 MHz (compared to TSH22IN 25 MHz). This part operates across the full TSH22IN supply voltage range (2.5V to 36V), maintains the same 8-DIP through-hole package, and supports the extended temperature range from -40°C to 85°C. Supply current is 3.4 mA per dual channel, and output current per channel is 50 mA.

Q: What are the supply voltage compatibility constraints?

A: The TSH22IN operates from 3V to 30V. Most substitute parts extend the minimum supply voltage to 2.5V and maximum to 36V, providing broader operational envelope. LM833N/NOPB is an exception, with a fixed 30V supply requirement. Designs operating at the TSH22IN minimum (3V) are compatible with all listed substitutes. Designs requiring operation below 3V are limited to parts specifying 2.5V minimum (LT1211ACN8#PBF, LT1211CN8#PBF, LT1213ACN8#PBF, LT1213CN8#PBF, LT1215CN8#PBF, LT1492CN8#PBF).

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

A: The TSH22IN specifies 100 nA input bias current. Substitute parts range from 10 pA (CA3240AEZ) to 4 µA (LT1208CN8#PBF). Lower input bias current reduces offset errors in high-impedance circuits and precision applications. Higher input bias current (such as LM833N/NOPB at 500 nA) may require input bias current compensation networks in sensitive applications. Circuit redesign is not required for substitution, but input impedance and offset voltage performance will vary accordingly.

Q: Are there temperature range limitations for specific substitute parts?

A: Yes. LM258P, LM833N/NOPB, LT1211ACN8#PBF, LT1211CN8#PBF, LT1213ACN8#PBF, and LT1213CN8#PBF support operation to 85°C maximum. LT1208CN8#PBF, LT1215CN8#PBF, and LT1492CN8#PBF are limited to 70°C maximum. The TSH22IN operates to 125°C. Applications requiring operation above 85°C cannot use any of the listed substitute parts without thermal derating or alternative component selection.

Q: What is the significance of RoHS3 compliance for all listed parts?

A: RoHS3 compliance indicates that all substitute parts meet the Restriction of Hazardous Substances Directive, confirming the absence of lead, cadmium, mercury, hexavalent chromium, and specified brominated flame retardants. This regulatory alignment with the TSH22IN ensures compatibility with modern procurement standards and environmental regulations across global markets.

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