TSH64CDT Equivalent & Substitute Parts

Part Overview

The TSH64CDT is a general-purpose operational amplifier manufactured by STMicroelectronics, configured as a 4-circuit rail-to-rail amplifier in a 14-SO surface mount package. This device is classified as obsolete, indicating discontinuation from active production. 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 component.

Key Parameters

Parameter	Value
Manufacturer Part Number	TSH64CDT
Manufacturer	STMicroelectronics
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	4
Output Type	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply Span (Min)	5 V
Voltage - Supply Span (Max)	12 V
Operating Temperature	0°C ~ 70°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TSH64CDT is determined by the following critical parameters:

Primary Compatibility Criteria:

Number of circuits: 4 channels
Output type: Rail-to-Rail configuration
Package type: 14-SOIC surface mount form factor
Supply voltage range: Minimum 5 V to maximum 12 V overlap required
Amplifier classification: General Purpose or Buffer/Voltage Feedback types

Secondary Considerations:

Operating temperature range compatibility
RoHS3 compliance status
Moisture sensitivity level (MSL 1 preferred for unlimited shelf life)
REACH compliance status

Substitute parts are grouped into two functional categories: General Purpose amplifiers (MC33204DR2G, NCV33204DR2G, OP491GSZ variants, OPA4703UA, OPA4704UA) and Buffer/Voltage Feedback amplifiers (MAX4222ESD+, MAX4222ESD+T). The LT1805CS#TRPBF represents an intermediate category with enhanced performance specifications while maintaining core compatibility parameters.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Number of Circuits	Output Type	Slew Rate (V/µs)	Gain Bandwidth Product (MHz)	Voltage - Supply Span Min (V)	Voltage - Supply Span Max (V)	Operating Temperature (°C)	Package / Case	Product Status
TSH64CDT	STMicroelectronics	General Purpose	4	Rail-to-Rail	98	60	5	12	0 ~ 70	14-SOIC	Obsolete
LT1805CS#TRPBF	Analog Devices Inc.	General Purpose	4	Rail-to-Rail	100	83	2.3	12.6	0 ~ 70	14-SOIC	Active
MAX4222ESD+	Analog Devices Inc./Maxim Integrated	Buffer, Voltage Feedback	4	Rail-to-Rail	600	N/A	3.15	11	-40 ~ 85	14-SOIC	Active
MAX4222ESD+T	Analog Devices Inc./Maxim Integrated	Buffer, Voltage Feedback	4	Rail-to-Rail	600	N/A	3.15	11	-40 ~ 85	14-SOIC	Active
MC33204DR2G	onsemi	General Purpose	4	Rail-to-Rail	1	2.2	1.8	12	-40 ~ 105	14-SOIC	Active
NCV33204DR2G	onsemi	General Purpose	4	Rail-to-Rail	1	2.2	1.8	12	-55 ~ 125	14-SOIC	Active
OP491GSZ	Analog Devices Inc.	General Purpose	4	Rail-to-Rail	0.5	3	2.7	12	-40 ~ 125	14-SOIC	Active
OP491GSZ-REEL	Analog Devices Inc.	General Purpose	4	Rail-to-Rail	0.5	3	2.7	12	-40 ~ 125	14-SOIC	Active
OP491GSZ-REEL7	Analog Devices Inc.	General Purpose	4	Rail-to-Rail	0.5	3	2.7	12	-40 ~ 125	14-SOIC	Active
OPA4703UA	Texas Instruments	CMOS	4	Rail-to-Rail	0.6	1	4	12	-40 ~ 85	14-SOIC	Active
OPA4704UA	Burr Brown	CMOS	4	Rail-to-Rail	3	3	4	12	-40 ~ 85	14-SOIC	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The LT1805CS#TRPBF from Analog Devices Inc. is the primary recommended substitute. This device maintains identical circuit count (4), output type (rail-to-rail), and package configuration (14-SOIC) as the TSH64CDT. The LT1805CS#TRPBF operates within the same temperature range (0°C to 70°C) and exceeds the original supply voltage specifications (2.3 V to 12.6 V versus 5 V to 12 V). The part is in active production status with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and environmental compliance.

Secondary Substitutes (General Purpose Category):

The OP491GSZ, OP491GSZ-REEL, and OP491GSZ-REEL7 variants from Analog Devices Inc. provide functional equivalence with 4-circuit rail-to-rail configuration in 14-SOIC packaging. These devices are in active production with extended operating temperature ranges (-40°C to 125°C) and supply voltage compatibility (2.7 V to 12 V). Packaging variants accommodate different procurement and assembly requirements (tube, tape & reel, and cut tape & digi-reel formats).

The MC33204DR2G and NCV33204DR2G from onsemi are general-purpose 4-circuit rail-to-rail amplifiers in 14-SOIC packages. The NCV33204DR2G includes automotive-grade qualification (AEC-Q100) with extended temperature range (-55°C to 125°C), suitable for applications requiring automotive compliance. Both devices are in active production with ROHS3 compliance.

The OPA4703UA and OPA4704UA from Texas Instruments and Burr Brown respectively are CMOS-type 4-circuit rail-to-rail amplifiers in 14-SOIC packages. These devices feature extremely low input bias current (1 pA) and are suitable for high-impedance applications. Operating temperature ranges are -40°C to 85°C with supply voltage range of 4 V to 12 V.

Buffer/Voltage Feedback Category:

The MAX4222ESD+ and MAX4222ESD+T from Analog Devices Inc./Maxim Integrated are buffer/voltage feedback amplifiers with 4 circuits in 14-SOIC packaging. These devices feature significantly higher slew rate (600 V/µs) and bandwidth (200 MHz) compared to the TSH64CDT. Operating temperature range extends to -40°C to 85°C. Packaging variants (tube and tape & reel) support different procurement methods. These substitutes are appropriate for applications requiring enhanced speed and bandwidth performance.

Compliance and Availability:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, consistent with the original TSH64CDT specifications. All substitute parts are in active production status, ensuring long-term supply chain stability and availability. Moisture sensitivity levels are MSL 1 (unlimited shelf life) for all primary and secondary substitutes, with the exception of OPA4703UA (MSL 2, 1 year).

Frequently Asked Questions (FAQ)

Q: Can the LT1805CS#TRPBF directly replace the TSH64CDT without circuit modifications?

A: The LT1805CS#TRPBF is functionally compatible as a direct replacement. Both devices are 4-circuit rail-to-rail operational amplifiers in 14-SOIC packages with identical pinout. The LT1805CS#TRPBF operates within the TSH64CDT supply voltage range (5 V to 12 V overlap) and maintains the same operating temperature specification (0°C to 70°C). No circuit modifications are required for basic substitution.

Q: What is the difference between the OP491GSZ, OP491GSZ-REEL, and OP491GSZ-REEL7 variants?

A: These three part numbers represent the same operational amplifier with different packaging and delivery formats. OP491GSZ is supplied in tube packaging. OP491GSZ-REEL is supplied on tape and reel. OP491GSZ-REEL7 is supplied on cut tape with digi-reel format. Electrical specifications and performance characteristics are identical across all three variants. Selection depends on procurement and assembly process requirements.

Q: Are the MAX4222ESD+ and MAX4222ESD+T suitable replacements for the TSH64CDT?

A: The MAX4222ESD+ and MAX4222ESD+T are functionally compatible in terms of circuit count (4), output type (rail-to-rail), and package (14-SOIC). However, these devices are classified as buffer/voltage feedback amplifiers rather than general-purpose amplifiers. They feature significantly higher slew rate (600 V/µs versus 98 V/µs) and bandwidth (200 MHz versus 74 MHz). These substitutes are appropriate for applications requiring enhanced speed performance. The supply voltage range (3.15 V to 11 V) overlaps with the TSH64CDT specification (5 V to 12 V).

Q: What is the significance of the NCV33204DR2G automotive qualification?

A: The NCV33204DR2G carries AEC-Q100 automotive qualification and is rated for extended temperature range (-55°C to 125°C). This qualification indicates the device meets automotive industry reliability and quality standards. Selection of the NCV33204DR2G is appropriate for applications requiring automotive-grade components or operation in extended temperature environments. The standard MC33204DR2G variant lacks automotive qualification but provides identical electrical specifications within the commercial temperature range (-40°C to 105°C).

Q: Why do the OPA4703UA and OPA4704UA have different slew rates despite similar specifications?

A: The OPA4703UA and OPA4704UA are both CMOS-type 4-circuit rail-to-rail amplifiers with identical circuit count, package, and supply voltage range. The OPA4704UA features a higher slew rate (3 V/µs versus 0.6 V/µs) and higher gain bandwidth product (3 MHz versus 1 MHz). Selection between these devices depends on application speed requirements. Both devices feature extremely low input bias current (1 pA), making them suitable for high-impedance signal conditioning applications.

Q: Is the TSH64CDT still available for procurement?

A: The TSH64CDT is classified as obsolete, indicating discontinuation from active production. Current inventory availability is limited to existing stock (1560 pieces reported). For new designs or ongoing production requirements, selection of an active production substitute part is necessary to ensure long-term supply chain continuity. All recommended substitute parts are in active production status with established supply chains.

Q: What packaging format should be selected for manufacturing assembly?

A: Packaging selection depends on assembly process requirements. Cut tape (CT) format is suitable for automated pick-and-place assembly systems. Tape & reel (TR) format accommodates high-volume production with continuous reel feeding. Tube packaging is appropriate for lower-volume manual assembly or component storage. The LT1805CS#TRPBF is available in tape & reel format. The OP491GSZ variants are available in tube, tape & reel, and cut tape & digi-reel formats. The MC33204DR2G and NCV33204DR2G are available in cut tape format. The MAX4222ESD+ is available in tube format, while MAX4222ESD+T is available in tape & reel format.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended substitute parts maintain ROHS3 compliance status, consistent with the original TSH64CDT specification. This compliance status ensures compatibility with environmental regulations and procurement requirements for RoHS3-compliant applications.

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