TSH64CD Equivalent & Substitute Parts

Part Overview

The TSH64CD is a general-purpose operational amplifier integrated circuit manufactured by STMicroelectronics, configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as obsolete, indicating that STMicroelectronics has discontinued production and support. The identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this amplifier topology.

Key Parameters

Parameter	TSH64CD Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	98	V/µs
Gain Bandwidth Product	60	MHz
-3dB Bandwidth	74	MHz
Current - Input Bias	6	µA
Voltage - Input Offset	1.5	mV
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	5	V
Voltage - Supply Span (Max)	12	V
Operating Temperature Range	0 to 70	°C
Mounting Type	Surface Mount	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	3 (168 Hours)	—

Substitute Part Grouping Explanation

Substitution of the TSH64CD is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Number of Circuits: 4 (mandatory)
Output Type: Rail-to-Rail (mandatory)
Package / Case: 14-SOIC (0.154", 3.90mm Width) (mandatory)
Mounting Type: Surface Mount (mandatory)

Secondary Compatibility Parameters:

Slew Rate: 98 V/µs (reference baseline)
Gain Bandwidth Product: 60 MHz (reference baseline)
Current - Input Bias: 6 µA (reference baseline)
Voltage - Input Offset: 1.5 mV (reference baseline)
Current - Output / Channel: 45 mA (reference baseline)
Voltage - Supply Span: 5 V to 12 V (reference baseline)
Operating Temperature Range: 0°C to 70°C (reference baseline)

Substitute parts are grouped into two categories based on their electrical performance relative to the TSH64CD:

Category A - High-Performance Substitutes: Parts with slew rate ≥ 98 V/µs and gain bandwidth product ≥ 60 MHz. These parts provide equivalent or superior performance characteristics and are suitable for direct replacement in applications requiring the original performance envelope.

Category B - Functional Substitutes: Parts with lower slew rate and gain bandwidth product but meeting all mandatory package and circuit configuration requirements. These parts are suitable for applications where the TSH64CD's performance specifications exceed design requirements.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	Gain Bandwidth Product (MHz)	Input Bias Current (µA)	Input Offset Voltage (mV)	Output Current / Channel (mA)	Supply Span Min (V)	Supply Span Max (V)	Operating Temp (°C)	Product Status
TSH64CD	STMicroelectronics	General Purpose	98	60	6	1.5	45	5	12	0 to 70	Obsolete
LT1805IS#PBF	Analog Devices Inc.	General Purpose	100	83	0.0025	1.5	50	2.3	12.6	-40 to 85	Active
MC33204DR2G	onsemi	General Purpose	1	2.2	0.00008	10	80	1.8	12	-40 to 105	Active
NCV33204DR2G	onsemi	General Purpose	1	2.2	0.00008	10	80	1.8	12	-55 to 125	Active
OP491GSZ	Analog Devices Inc.	General Purpose	0.5	3	0.00003	0.08	16	2.7	12	-40 to 125	Active
OP491GSZ-REEL	Analog Devices Inc.	General Purpose	0.5	3	0.00003	0.08	16	2.7	12	-40 to 125	Active
OP491GSZ-REEL7	Analog Devices Inc.	General Purpose	0.5	3	0.00003	0.08	16	2.7	12	-40 to 125	Active
OPA4703UA	Texas Instruments	CMOS	0.6	1	0.000001	0.16	10	4	12	-40 to 85	Active
OPA4704UA	Burr Brown	CMOS	3	3	0.000001	0.16	10	4	12	-40 to 85	Active
OPA4743UA	Burr Brown	CMOS	10	7	0.000001	1.5	20	3.5	12	-40 to 85	Active
OPA4743UA/2K5	Texas Instruments	CMOS	10	7	0.000001	1.5	20	3.5	12	-40 to 85	Active

Engineering Selection Recommendations

Category A - High-Performance Direct Substitutes:

The LT1805IS#PBF (Analog Devices Inc.) is the primary recommended substitute for the TSH64CD. This part meets or exceeds all mandatory package and circuit configuration requirements. The LT1805IS#PBF provides superior electrical performance with a slew rate of 100 V/µs (compared to 98 V/µs) and a gain bandwidth product of 83 MHz (compared to 60 MHz). The device maintains ROHS3 compliance and operates across an extended temperature range of -40°C to 85°C. The LT1805IS#PBF is classified as active product status, ensuring continued availability and manufacturer support.

Category B - Functional Substitutes with Performance Trade-offs:

The OP491GSZ, OP491GSZ-REEL, and OP491GSZ-REEL7 (Analog Devices Inc.) are functionally equivalent substitutes suitable for applications where the TSH64CD's performance specifications exceed design requirements. These parts feature lower slew rate (0.5 V/µs) and gain bandwidth product (3 MHz) but maintain active product status and ROHS3 compliance. The OP491 series operates across an extended temperature range of -40°C to 125°C.

The MC33204DR2G and NCV33204DR2G (onsemi) are functionally equivalent substitutes with significantly lower slew rate (1 V/µs) and gain bandwidth product (2.2 MHz). The NCV33204DR2G is qualified to AEC-Q100 automotive standards and operates across an extended temperature range of -55°C to 125°C, making it suitable for automotive applications. Both parts maintain ROHS3 compliance and active product status.

The OPA4703UA (Texas Instruments), OPA4704UA (Burr Brown), OPA4743UA (Burr Brown), and OPA4743UA/2K5 (Texas Instruments) are CMOS amplifier alternatives with varying performance characteristics. These parts feature extremely low input bias current (1 pA) and maintain active product status with ROHS3 compliance. The OPA4743UA and OPA4743UA/2K5 provide the highest slew rate (10 V/µs) among CMOS alternatives.

All substitute parts listed maintain compliance with RoHS3 and REACH regulations. Selection should be based on specific application requirements regarding slew rate, gain bandwidth product, input bias current, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the LT1805IS#PBF directly replace the TSH64CD without circuit modifications?

A: The LT1805IS#PBF is mechanically and electrically compatible with the TSH64CD. Both devices feature identical 14-SOIC packaging and rail-to-rail output configuration. The LT1805IS#PBF provides superior performance specifications, including higher slew rate and gain bandwidth product. Direct substitution is supported without circuit modifications.

Q: What is the primary difference between the OP491GSZ and OP491GSZ-REEL variants?

A: The OP491GSZ and OP491GSZ-REEL are electrically identical. The difference is packaging format: OP491GSZ is supplied in tube packaging, while OP491GSZ-REEL is supplied in tape and reel format. The OP491GSZ-REEL7 variant is supplied in cut tape and Digi-Reel format. All three variants share identical electrical specifications and active product status.

Q: Is the NCV33204DR2G suitable for automotive applications?

A: The NCV33204DR2G is qualified to AEC-Q100 automotive standards and is designated as an automotive-grade component. This part is suitable for automotive applications requiring extended temperature range operation (-55°C to 125°C) and automotive-level reliability qualification.

Q: What are the key electrical differences between general-purpose and CMOS amplifier substitutes?

A: General-purpose amplifier substitutes (LT1805IS#PBF, OP491GSZ series, MC33204DR2G, NCV33204DR2G) feature higher input bias current (measured in nanoamperes to microamperes) and are optimized for standard bipolar or JFET input stages. CMOS amplifier substitutes (OPA4703UA, OPA4704UA, OPA4743UA, OPA4743UA/2K5) feature extremely low input bias current (1 pA) due to CMOS input stage architecture. CMOS substitutes are suitable for applications requiring minimal input current draw.

Q: Can the OPA4703UA replace the TSH64CD in high-speed applications?

A: The OPA4703UA is not recommended for applications requiring the TSH64CD's slew rate (98 V/µs) or gain bandwidth product (60 MHz). The OPA4703UA provides only 0.6 V/µs slew rate and 1 MHz gain bandwidth product. This substitute is suitable only for low-frequency applications where the TSH64CD's performance specifications exceed design requirements.

Q: What is the significance of the Moisture Sensitivity Level (MSL) rating difference between TSH64CD and substitute parts?

A: The TSH64CD features MSL 3 (168 hours), indicating higher moisture sensitivity requiring controlled storage and handling conditions. Most substitute parts feature MSL 1 (unlimited), indicating lower moisture sensitivity and more relaxed storage requirements. This difference may simplify supply chain management and storage procedures when transitioning to substitute parts.

Q: Are all listed substitute parts RoHS3 compliant?

A: All substitute parts listed in this document are RoHS3 compliant. The TSH64CD is also RoHS3 compliant. All parts maintain compliance with REACH regulations. Compliance certifications are maintained across the substitute part selection.

Q: What is the operating temperature range consideration when selecting a substitute?

A: The TSH64CD operates across 0°C to 70°C. Most substitute parts extend this range to -40°C to 85°C or wider. The NCV33204DR2G extends to -55°C to 125°C. Selection should consider application temperature requirements. Extended temperature range substitutes provide greater operational flexibility but may not be necessary for applications limited to the TSH64CD's original temperature range.

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