TL3474ACN Equivalent & Substitute Parts

Part Overview

The TL3474ACN is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in a 14-pin DIP package. This component is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The TL3474ACN operates across a wide supply voltage range of 4V to 36V and is suitable for general-purpose amplification applications requiring moderate bandwidth and slew rate performance. Alternative equivalent parts are necessary due to product status transition and to support design flexibility across different packaging technologies and performance specifications.

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 (Total)	3.5	mA (x4 Channels)
Current - Output / Channel	34	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	36	V
Operating Temperature Range	0 to 70	°C
Package / Case	14-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TL3474ACN is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Number of circuits (4 required)
Amplifier type classification (general-purpose or J-FET variants)
Supply voltage range overlap (minimum 4V to 36V span required)
Slew rate and gain-bandwidth product performance envelope
Input bias current and input offset voltage specifications
Output current capability per channel

Mechanical Compatibility Criteria:

Package type (14-pin DIP configuration)
Mounting technology (through-hole or surface-mount alternatives)
Pin count and pinout compatibility

Compliance and Status Criteria:

RoHS3 compliance
Product status (active or last-time-buy)
Regulatory certifications (REACH, ECCN)

Substitute parts are grouped into two categories: direct pin-compatible replacements maintaining identical electrical performance, and functional equivalents offering alternative amplifier topologies (J-FET input stages) with modified performance characteristics suitable for specific application requirements.

Parameter Comparison

Parameter	TL3474ACN	TL3474ACDR	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 / 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)	0 to 70	0 to 70	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

TL3474ACDR (Texas Instruments)

The TL3474ACDR is the manufacturer-recommended direct electrical equivalent to the TL3474ACN, maintaining identical electrical specifications including slew rate, gain-bandwidth product, input bias current, and supply voltage range. The primary distinction is packaging: TL3474ACDR is supplied in 14-SOIC surface-mount configuration versus the through-hole 14-DIP of the TL3474ACN. This substitute is appropriate for new designs utilizing surface-mount assembly processes. Product status is Active, ensuring long-term availability. RoHS3 compliance and regulatory certifications are maintained.

AD713JNZ (Analog Devices Inc.)

The AD713JNZ is a J-FET input amplifier offering superior input bias current performance (10 pA versus 100 nA) and improved input offset voltage (300 µV versus 1 mV). Slew rate is enhanced to 20 V/µs. The device maintains 4-circuit configuration and 14-DIP through-hole packaging identical to the TL3474ACN. Supply voltage minimum is elevated to 9V, restricting operation below this threshold. Supply current is increased to 10 mA. This substitute is suitable for applications requiring low input bias current and improved input offset characteristics. Product status is Active.

LT1058CN#PBF (Analog Devices Inc.)

The LT1058CN#PBF is a J-FET input amplifier with the lowest input bias current (7 pA) and lowest supply current (1.7 mA) among substitute options. Gain-bandwidth product is increased to 5 MHz. Input offset voltage is 250 µV. The device requires minimum 20V supply voltage, restricting operation in low-voltage applications below this threshold. 14-DIP through-hole packaging is maintained. This substitute is appropriate for low-power, low-bias-current applications where supply voltage exceeds 20V. Product status is Active.

OP470GPZ (Analog Devices Inc.)

The OP470GPZ is a general-purpose amplifier with extended operating temperature range (-40°C to 85°C versus 0°C to 70°C). Gain-bandwidth product is increased to 6 MHz. Slew rate is reduced to 3 V/µs, representing the lowest among all substitutes. Input bias current is 15 nA, and supply current is 9 mA. Supply voltage minimum is 9V. 14-DIP through-hole packaging is maintained. This substitute is appropriate for applications requiring extended temperature operation and higher bandwidth, where reduced slew rate is acceptable. Product status is Active.

Frequently Asked Questions (FAQ)

Q: Can the TL3474ACDR be used as a direct replacement for the TL3474ACN in existing through-hole PCB designs?

A: No. The TL3474ACDR uses 14-SOIC surface-mount packaging, which is incompatible with through-hole PCB layouts designed for 14-DIP components. PCB redesign is required for surface-mount implementation.

Q: What is the primary advantage of J-FET input substitutes (AD713JNZ, LT1058CN#PBF) over the TL3474ACN?

A: J-FET input amplifiers provide significantly lower input bias current (7-10 pA versus 100 nA) and lower input offset voltage (250-300 µV versus 1 mV). These characteristics are beneficial for high-impedance signal sources and precision measurement applications.

Q: Are there supply voltage restrictions when substituting with AD713JNZ or LT1058CN#PBF?

A: Yes. The AD713JNZ requires minimum 9V supply voltage, and the LT1058CN#PBF requires minimum 20V supply voltage. The TL3474ACN operates from 4V minimum. Designs operating below these thresholds cannot use these substitutes.

Q: Which substitute offers the lowest power consumption?

A: The LT1058CN#PBF provides the lowest total supply current at 1.7 mA across four channels, compared to 3.5 mA for the TL3474ACN.

Q: Is the OP470GPZ suitable for applications requiring fast slew rate response?

A: No. The OP470GPZ has a slew rate of 3 V/µs, the lowest among all options. Applications requiring fast transient response should use the AD713JNZ (20 V/µs) or maintain the TL3474ACN (13 V/µs).

Q: Can the OP470GPZ operate in extended temperature environments?

A: Yes. The OP470GPZ operates from -40°C to 85°C, providing the widest temperature range among all options. The TL3474ACN and other substitutes are limited to 0°C to 70°C.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TL3474ACDR, AD713JNZ, LT1058CN#PBF, OP470GPZ) are RoHS3 compliant and REACH unaffected, matching the compliance status of the TL3474ACN.

Q: What is the significance of the TL3474ACN being classified as "Last Time Buy"?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part. Existing inventory is limited, and no future manufacturing is planned. Designs should transition to active alternatives such as the TL3474ACDR or other substitutes to ensure long-term component availability.

Q: Can multiple substitute parts be used interchangeably within the same design?

A: No. Each substitute has distinct electrical characteristics. Substitution must be evaluated on a per-application basis, considering supply voltage requirements, input bias current specifications, slew rate performance, and temperature operating range.

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