TL3474AIN Equivalent & Substitute Parts

Part Overview

The TL3474AIN is a general-purpose operational amplifier featuring four independent circuits in a 14-pin DIP package. Manufactured by Texas Instruments, this device is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory of 1,146 pieces. The TL3474AIN operates across a wide supply voltage range of 4V to 36V and maintains performance across industrial temperature ranges from -40°C to 105°C. Due to its Last Time Buy status, identifying functionally equivalent substitute parts is essential for long-term design continuity and procurement planning.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Slew Rate	13	V/µs
Gain Bandwidth Product	4	MHz
Current - Input Bias	100	nA
Voltage - Input Offset	1	mV
Current - Supply (per 4 Channels)	3.5	mA
Current - Output per Channel	34	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	36	V
Operating Temperature Range	-40 to 105	°C
Package / Case	14-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TL3474AIN is determined by the following critical parameters: amplifier type (general purpose vs. J-FET), number of circuits (4 required), package compatibility (14-DIP through-hole preferred for direct replacement), supply voltage range (minimum 4V, maximum 36V), operating temperature range (-40°C to 105°C), and electrical performance metrics (slew rate, gain bandwidth product, input bias current, and output current capability).

The substitute parts are grouped into two categories:

Category 1: Direct Package Replacement (14-DIP Through-Hole) Parts maintaining identical 14-DIP through-hole packaging for direct PCB substitution without layout modification.

Category 2: Functional Equivalent with Alternative Packaging (14-SOIC Surface Mount) Parts providing electrical equivalence with surface-mount packaging, requiring PCB redesign or adapter solutions.

Substitution validity is confirmed when the substitute part meets or exceeds the minimum electrical specifications of the TL3474AIN while maintaining compatibility with the supply voltage range and operating temperature requirements of the application circuit.

Parameter Comparison

Parameter	TL3474AIN	TL3474AIDR	AD713JNZ	LT1058CN#PBF	OP470GPZ
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	General Purpose	General Purpose	J-FET	J-FET	General Purpose
Number of Circuits	4	4	4	4	4
Slew Rate (V/µs)	13	13	20	13	3
Gain Bandwidth Product (MHz)	4	4	4	5	6
Current - Input Bias (nA/pA)	100 nA	100 nA	10 pA	7 pA	15 nA
Voltage - Input Offset (mV/µV)	1 mV	1 mV	300 µV	250 µV	400 µV
Current - Supply (mA)	3.5	3.5	10	1.7	9
Current - Output per Channel (mA)	34	34	25	—	—
Voltage - Supply Span Min (V)	4	4	9	20	9
Voltage - Supply Span Max (V)	36	36	36	36	36
Operating Temperature (°C)	-40 to 105	-40 to 105	0 to 70	0 to 70	-40 to 85
Package / Case	14-DIP	14-SOIC	14-DIP	14-DIP	14-DIP
Mounting Type	Through Hole	Surface Mount	Through Hole	Through Hole	Through Hole
Product Status	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TL3474AIDR (Texas Instruments)

The TL3474AIDR is the manufacturer-recommended substitute, offering identical electrical specifications to the TL3474AIN with matching slew rate (13V/µs), gain bandwidth product (4 MHz), input bias current (100 nA), and input offset voltage (1 mV). This part maintains the same supply voltage range (4V to 36V) and operating temperature range (-40°C to 105°C). The primary distinction is packaging: TL3474AIDR uses 14-SOIC surface-mount configuration versus the through-hole 14-DIP of the original. Both parts share the same base product number (TL3474) and carry ROHS3 compliance. The TL3474AIDR is currently in Active product status with significantly higher inventory availability (15,538 pieces). Selection of this part requires PCB redesign or use of DIP-to-SOIC adapter modules for existing through-hole layouts.

AD713JNZ (Analog Devices Inc.)

The AD713JNZ is a J-FET amplifier offering superior input bias current performance (10 pA versus 100 nA) and faster slew rate (20V/µs versus 13V/µs). This part maintains 4-circuit configuration in 14-DIP through-hole packaging, enabling direct PCB substitution without layout modification. However, the AD713JNZ operates within a narrower supply voltage range (9V to 36V minimum versus 4V minimum) and restricted temperature range (0°C to 70°C versus -40°C to 105°C). The AD713JNZ is suitable only for applications where the supply voltage floor is 9V or higher and operating temperature does not fall below 0°C or exceed 70°C. Product status is Active with 2,463 pieces in inventory.

LT1058CN#PBF (Analog Devices Inc., LT® Series)

The LT1058CN#PBF is a J-FET amplifier with exceptional input bias current (7 pA) and low supply current consumption (1.7 mA for 4 channels). This part provides 14-DIP through-hole packaging for direct substitution and maintains the 4-circuit configuration. The LT1058CN#PBF operates within a narrower supply voltage range (20V to 36V minimum versus 4V minimum) and restricted temperature range (0°C to 70°C). The LT1058CN#PBF is applicable only to applications with minimum supply voltage of 20V or higher and operating temperature between 0°C and 70°C. Product status is Active with 2,588 pieces in inventory.

OP470GPZ (Analog Devices Inc.)

The OP470GPZ is a general-purpose amplifier maintaining 4-circuit configuration in 14-DIP through-hole packaging for direct PCB substitution. This part exhibits lower slew rate (3V/µs versus 13V/µs) and higher supply current consumption (9 mA versus 3.5 mA). The OP470GPZ operates within a narrower supply voltage range (9V to 36V minimum versus 4V minimum) and restricted temperature range (-40°C to 85°C versus -40°C to 105°C). The OP470GPZ is suitable only for applications where the supply voltage floor is 9V or higher and maximum operating temperature does not exceed 85°C. Product status is Active with 1,311 pieces in inventory.

Frequently Asked Questions (FAQ)

Q: Can the TL3474AIDR directly replace the TL3474AIN on an existing PCB?

A: The TL3474AIDR provides identical electrical specifications but uses 14-SOIC surface-mount packaging instead of 14-DIP through-hole. Direct PCB substitution is not possible without either PCB redesign or use of a DIP-to-SOIC adapter module. Both parts share the same base product number and electrical performance characteristics.

Q: What are the key differences between general-purpose and J-FET amplifier types in this comparison?

A: General-purpose amplifiers (TL3474AIN, TL3474AIDR, OP470GPZ) use bipolar input stages with input bias currents in the nanoampere range (15 to 100 nA). J-FET amplifiers (AD713JNZ, LT1058CN#PBF) use field-effect transistor input stages with input bias currents in the picoampere range (7 to 10 pA), providing superior input impedance and lower input bias current. J-FET types are preferred for high-impedance signal sources and precision measurement applications.

Q: Which substitute parts maintain the full operating temperature range of the TL3474AIN (-40°C to 105°C)?

A: Only the TL3474AIDR maintains the complete operating temperature range of -40°C to 105°C. The AD713JNZ and LT1058CN#PBF are limited to 0°C to 70°C. The OP470GPZ operates from -40°C to 85°C, which does not cover the full 105°C maximum of the original part.

Q: Which substitute parts are compatible with the minimum 4V supply voltage of the TL3474AIN?

A: Only the TL3474AIDR maintains the 4V minimum supply voltage specification. The AD713JNZ, LT1058CN#PBF, and OP470GPZ all require minimum supply voltages of 9V or higher (LT1058CN#PBF requires 20V minimum). Applications operating at 4V to 8V supply levels must use the TL3474AIDR or the original TL3474AIN.

Q: What is the significance of the Last Time Buy status for the TL3474AIN?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TL3474AIN. The current inventory of 1,146 pieces represents the final available stock. Once depleted, this part number will no longer be available from the manufacturer. Designers should transition to active substitute parts such as the TL3474AIDR or other alternatives to ensure long-term design continuity and supply chain reliability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed (TL3474AIDR, AD713JNZ, LT1058CN#PBF, OP470GPZ) carry ROHS3 compliance certification, matching the compliance status of the TL3474AIN. All parts are also REACH Unaffected and classified under ECCN EAR99.

Q: What packaging options are available for through-hole PCB designs?

A: For through-hole PCB designs requiring direct substitution without layout modification, the following 14-DIP packages are available: AD713JNZ, LT1058CN#PBF, and OP470GPZ. The TL3474AIDR uses 14-SOIC surface-mount packaging and requires either PCB redesign or adapter modules for through-hole applications.

Q: How do slew rate differences affect circuit performance?

A: Slew rate determines the maximum rate of voltage change at the amplifier output. The TL3474AIN specifies 13V/µs. The AD713JNZ offers faster slew rate (20V/µs), beneficial for high-frequency signal processing. The OP470GPZ has slower slew rate (3V/µs), which may limit performance in applications requiring rapid output transitions. Selection depends on the specific frequency content and transient response requirements of the application circuit.

Q: What is the impact of supply current differences on power consumption?

A: The TL3474AIN draws 3.5 mA for all four channels. The LT1058CN#PBF offers the lowest consumption at 1.7 mA, beneficial for battery-powered applications. The AD713JNZ draws 10 mA and OP470GPZ draws 9 mA, both significantly higher. For power-sensitive applications, the LT1058CN#PBF provides substantial power savings, provided supply voltage and temperature requirements are met.

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