LT1782CS5#TR Equivalent & Substitute Parts

Part Overview

The LT1782CS5#TR is a general-purpose operational amplifier manufactured by Analog Devices Inc., designed for rail-to-rail applications in a compact TSOT-23-5 surface mount package. This single-circuit amplifier operates across a 2.5 V to 18 V supply range and is classified as Active product status. Equivalent and substitute parts are identified to address supply chain requirements, packaging preferences, and application-specific performance needs while maintaining functional compatibility within specified electrical parameters.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.075	V/µs
Gain Bandwidth Product	225	kHz
Current - Input Bias	8	nA
Voltage - Input Offset	500	µV
Current - Supply	45	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	18	V
Operating Temperature	0 to 70	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-23-5 Thin, TSOT-23-5	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LT1782CS5#TR is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Supply Voltage Range: Minimum 2.5 V, Maximum 18 V
Operating Temperature: 0°C to 70°C or extended range
Package / Case: SOT-23-5 or equivalent footprint (SOT-753, SC-74A)

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount
Supplier Device Package: TSOT-23-5 or SOT-23-5
Moisture Sensitivity Level: 1 (Unlimited)

Performance Parameters for Substitution Assessment:

Slew Rate: 0.075 V/µs (baseline)
Gain Bandwidth Product: 225 kHz (baseline)
Current - Input Bias: 8 nA (baseline)
Voltage - Input Offset: 500 µV (baseline)
Current - Supply: 45 µA (baseline)

Substitute parts are grouped into two categories: Direct equivalents (identical specifications and packaging) and similar alternatives (compatible electrical and mechanical parameters with performance variations).

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (kHz)	Input Bias (nA/pA)	Input Offset (µV)	Supply Current (µA/nA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package
LT1782CS5#TR	Analog Devices	0.075	225	8 nA	500	45	2.5	18	0 to 70	TSOT-23-5
LT1782CS5#TRPBF	Analog Devices	0.075	225	8 nA	500	45	2.5	18	0 to 70	TSOT-23-5
MCP6H01T-E/OT	Microchip Technology	0.8	1200	10 pA	700	135	3.5	16	-40 to 125	SOT-23-5
TLV2381IDBVT	Texas Instruments	0.06	160	1 pA	500	7	2.7	16	-40 to 125	SOT-23-5
TLV2401CDBVT	Texas Instruments	0.0025	5.5	100 pA	390	0.9	2.5	16	0 to 70	SOT-23-5
TLV2401IDBVR	Texas Instruments	0.0025	5.5	100 pA	390	0.9	2.5	16	-40 to 125	SOT-23-5
TLV2401IDBVT	Texas Instruments	0.0025	5.5	100 pA	390	0.9	2.5	16	-40 to 125	SOT-23-5
TLV2401QDBVRQ1	Texas Instruments	0.0025	5.5	100 pA	390	0.9	2.5	16	-40 to 125	SOT-23-5
TLV271CW5-7	Diodes Incorporated	2.0	1900	1 pA	500	550	2.7	16	0 to 70	SOT-25
TLV271IW5-7	Diodes Incorporated	2.0	1900	1 pA	500	550	2.7	16	-40 to 125	SOT-25

Engineering Selection Recommendations

Direct Equivalent: LT1782CS5#TRPBF is a direct equivalent to LT1782CS5#TR, differing only in packaging designation (Tape & Reel with lead-free suffix). Both parts share identical electrical specifications, operating temperature range, and supply voltage parameters. Selection between these two is determined by packaging and reel format requirements.

Compatible Substitutes with Performance Variations:

TLV2381IDBVT (Texas Instruments): This part maintains rail-to-rail output and single-circuit configuration with compatible supply voltage range (2.7 V to 16 V). The extended operating temperature range (-40°C to 125°C) provides broader environmental coverage. Slew rate (0.06 V/µs) and gain bandwidth product (160 kHz) are comparable to the LT1782CS5#TR. Input bias current is significantly lower (1 pA), and supply current is reduced to 7 µA. All parts carry ROHS3 compliance and MSL 1 rating.

TLV2401 Series (Texas Instruments): The TLV2401CDBVT, TLV2401IDBVR, TLV2401IDBVT, and TLV2401QDBVRQ1 variants share identical electrical specifications with ultra-low slew rate (0.0025 V/µs) and minimal gain bandwidth product (5.5 kHz). These parts are suitable for applications requiring extremely low power consumption (0.9 µA supply current) and low-frequency operation. The TLV2401QDBVRQ1 includes automotive-grade qualification (AEC-Q100) and extended temperature range (-40°C to 125°C). Supply voltage compatibility spans 2.5 V to 16 V.

MCP6H01T-E/OT (Microchip Technology): This part offers enhanced performance with higher slew rate (0.8 V/µs) and gain bandwidth product (1.2 MHz), suitable for faster signal processing applications. Operating temperature range extends to -40°C to 125°C. Minimum supply voltage is 3.5 V, which may limit use in lower-voltage applications. Input bias current is 10 pA.

TLV271 Series (Diodes Incorporated): The TLV271CW5-7 and TLV271IW5-7 are CMOS amplifiers with significantly higher slew rate (2.0 V/µs) and gain bandwidth product (1.9 MHz). These parts operate in SOT-25 package format rather than TSOT-23-5, requiring PCB layout modification. Supply current is elevated at 550 µA. The TLV271IW5-7 provides extended temperature range (-40°C to 125°C).

All substitute parts maintain ROHS3 compliance, MSL 1 moisture sensitivity rating, and surface mount configuration. Selection criteria depend on application-specific requirements for slew rate, bandwidth, power consumption, temperature range, and package footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can LT1782CS5#TRPBF be used as a direct replacement for LT1782CS5#TR?

A: Yes. LT1782CS5#TRPBF is a direct equivalent with identical electrical specifications, operating temperature range (0°C to 70°C), and supply voltage parameters (2.5 V to 18 V). The difference is packaging format: TRPBF indicates Tape & Reel packaging with lead-free designation, while TR indicates standard Tape & Reel format. Both parts are functionally interchangeable.

Q: What are the key differences between TLV2381IDBVT and the LT1782CS5#TR?

A: TLV2381IDBVT maintains compatible rail-to-rail output and single-circuit configuration with overlapping supply voltage range (2.7 V to 16 V). Primary differences include: extended operating temperature (-40°C to 125°C versus 0°C to 70°C), lower input bias current (1 pA versus 8 nA), reduced supply current (7 µA versus 45 µA), and slightly lower slew rate (0.06 V/µs versus 0.075 V/µs). Input offset voltage remains at 500 µV. These differences make TLV2381IDBVT suitable for low-power, extended-temperature applications.

Q: Are the TLV2401 series parts suitable for high-speed applications?

A: No. The TLV2401 series (TLV2401CDBVT, TLV2401IDBVR, TLV2401IDBVT, TLV2401QDBVRQ1) features ultra-low slew rate (0.0025 V/µs) and minimal gain bandwidth product (5.5 kHz), making them unsuitable for high-speed signal processing. These parts are optimized for low-power, low-frequency applications where minimal power consumption (0.9 µA) is critical. The TLV2401QDBVRQ1 variant includes automotive-grade qualification (AEC-Q100).

Q: What is the significance of the SOT-25 package used in TLV271 series parts?

A: The TLV271CW5-7 and TLV271IW5-7 use SOT-25 package format, which differs from the TSOT-23-5 package of the LT1782CS5#TR. While both are five-pin surface mount packages, SOT-25 has different pin spacing and footprint dimensions. PCB layout and schematic modifications are required for substitution. Pin-to-pin functional compatibility exists, but physical board redesign is necessary.

Q: Can MCP6H01T-E/OT replace LT1782CS5#TR in all applications?

A: MCP6H01T-E/OT is functionally compatible as a rail-to-rail, single-circuit general-purpose amplifier in SOT-23-5 package. However, the minimum supply voltage is 3.5 V, which restricts use in applications requiring 2.5 V operation. Enhanced performance specifications include higher slew rate (0.8 V/µs) and gain bandwidth product (1.2 MHz). Extended operating temperature range (-40°C to 125°C) provides broader environmental coverage. Application-specific requirements determine suitability.

Q: What does ROHS3 compliance indicate?

A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive 3, which restricts the use of specific hazardous materials including lead, cadmium, mercury, hexavalent chromium, and certain brominated flame retardants in electrical and electronic equipment. All listed substitute parts carry ROHS3 compliance, ensuring environmental and regulatory compatibility.

Q: Why is Moisture Sensitivity Level (MSL) 1 important?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed parts carry MSL 1 rating, eliminating moisture-related reliability concerns and simplifying supply chain management compared to higher MSL ratings that require controlled storage conditions.

Q: What is the difference between TLV2401IDBVT and TLV2401QDBVRQ1?

A: Both parts share identical electrical specifications (0.0025 V/µs slew rate, 5.5 kHz gain bandwidth product, 0.9 µA supply current). The primary difference is qualification level: TLV2401QDBVRQ1 includes automotive-grade qualification (AEC-Q100) and is designated for automotive applications. TLV2401IDBVT is a standard industrial-grade part. Both support extended operating temperature range (-40°C to 125°C).

Q: Is package compatibility the only consideration when selecting a substitute?

A: No. While package compatibility (SOT-23-5 or equivalent footprint) is essential for physical board integration, electrical parameters must also align with application requirements. Critical parameters include supply voltage range, operating temperature, slew rate, gain bandwidth product, input bias current, and output current capability. Application-specific performance needs determine whether a substitute is functionally adequate.

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