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TL3474CDR Equivalent & Substitute Parts
Part Overview
The TL3474CDR is a general-purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit integrated circuit in 14-SOIC surface-mount packaging. This device is classified as Active product status and is RoHS3 compliant. The TL3474CDR serves applications requiring low-cost, general-purpose amplification with moderate performance specifications. Substitute parts are identified when inventory constraints, packaging format requirements, or specific performance enhancements are necessary for system design flexibility.
Substiute Parts
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 (x4 Channels) | 3.5 | mA |
| Current - Output / Channel | 34 | mA |
| Voltage - Supply Span (Min) | 4 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | 0 to 70 | °C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the TL3474CDR are classified based on the following substitution criteria:
Primary Substitution Criteria:
- Number of Circuits: 4 (mandatory match)
- Package / Case: 14-SOIC surface-mount configuration (mandatory match)
- Mounting Type: Surface Mount (mandatory match)
- RoHS Status: ROHS3 Compliant (mandatory match)
- Moisture Sensitivity Level: 1 (Unlimited) (mandatory match)
Secondary Performance Parameters (allowable variation):
- Slew Rate: 13 V/µs or higher
- Gain Bandwidth Product: 4 MHz or higher
- Current - Input Bias: 100 nA or lower
- Voltage - Input Offset: 1 mV or lower
- Current - Supply: 3.5 mA (x4 Channels) or lower
- Current - Output / Channel: 34 mA or higher
- Voltage - Supply Span: minimum 4 V to 36 V maximum (or wider range)
- Operating Temperature: 0°C to 70°C minimum (extended range acceptable)
Substitute parts are grouped into two categories: General Purpose Amplifiers (matching the TL3474CDR amplifier type) and J-FET Amplifiers (enhanced performance alternatives with superior input characteristics).
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA/nA) | Input Offset (µV/mV) | Supply Current x4 (mA) | Output Current (mA) | Supply Span Min (V) | Supply Span Max (V) | Temp Range (°C) | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TL3474CDR | Texas Instruments | General Purpose | 13 | 4 | 100 nA | 1 mV | 3.5 | 34 | 4 | 36 | 0 to 70 | Tape & Reel |
| AD8513ARZ-REEL | Analog Devices Inc. | J-FET | 20 | 8 | 25 pA | 100 µV | 2.2 | 70 | 10 | 30 | -40 to 125 | Tape & Reel |
| AD8513ARZ-REEL7 | Analog Devices Inc. | J-FET | 20 | 8 | 25 pA | 100 µV | 2.2 | 70 | 10 | 30 | -40 to 125 | Cut Tape & Digi-Reel |
| ADA4000-4ARZ | Analog Devices Inc. | J-FET | 20 | 5 | 5 pA | 200 µV | 1.35 | 28 | 8 | 36 | -40 to 125 | Tube |
| ADA4000-4ARZ-R7 | Analog Devices Inc. | J-FET | 20 | 5 | 5 pA | 200 µV | 1.35 | 28 | 8 | 36 | -40 to 125 | Cut Tape & Digi-Reel |
| ADTL084ARZ-REEL | Analog Devices Inc. | J-FET | 20 | 5 | 2 pA | 1.5 mV | 1.2 | 27 | 8 | 36 | -40 to 125 | Tape & Reel |
| LF247DT | STMicroelectronics | J-FET | 16 | 4 | 20 pA | 3 mV | 1.4 | 40 | 44 | 44 | -40 to 105 | Tape & Reel |
| LF347D | STMicroelectronics | J-FET | 16 | 3 | 20 pA | 3 mV | 1.4 | 40 | 44 | 44 | 0 to 70 | Tube |
| LF347DT | STMicroelectronics | J-FET | 16 | 4 | 20 pA | 3 mV | 1.4 | 40 | 44 | 44 | 0 to 70 | Cut Tape & Digi-Reel |
| LM2902DR2G | onsemi | General Purpose | — | 1 | 90 nA | 2 mV | — | 40 | 3 | 32 | -40 to 105 | Cut Tape & Digi-Reel |
| LM2902EDR2G | onsemi | General Purpose | — | 1 | 90 nA | 2 mV | — | 40 | 3 | 32 | -40 to 105 | Tape & Reel |
Engineering Selection Recommendations
General Purpose Amplifier Category (Direct Functional Equivalents):
The LM2902DR2G and LM2902EDR2G (onsemi) are general-purpose operational amplifiers with 4-circuit configuration in 14-SOIC packaging. These parts maintain the same amplifier classification as the TL3474CDR. Both are RoHS3 compliant with MSL 1 rating. The LM2902 series exhibits lower gain-bandwidth product (1 MHz versus 4 MHz) and reduced slew rate specification, making them suitable for applications where the TL3474CDR's performance margin exceeds system requirements. The LM2902EDR2G is available in Tape & Reel packaging, matching the TL3474CDR format. The LM2902DR2G is supplied in Cut Tape & Digi-Reel format.
J-FET Amplifier Category (Enhanced Performance Alternatives):
J-FET input amplifiers provide superior input characteristics compared to general-purpose designs. All J-FET substitutes listed maintain 4-circuit configuration and 14-SOIC packaging with RoHS3 compliance and MSL 1 rating.
The AD8513ARZ-REEL and AD8513ARZ-REEL7 (Analog Devices Inc.) offer 20 V/µs slew rate and 8 MHz gain-bandwidth product with extremely low input bias current (25 pA). These parts support extended operating temperature range (-40°C to 125°C) and are available in both Tape & Reel and Cut Tape & Digi-Reel formats.
The ADA4000-4ARZ and ADA4000-4ARZ-R7 (Analog Devices Inc.) feature the lowest input bias current (5 pA) among all substitutes, with 20 V/µs slew rate and 5 MHz gain-bandwidth product. Supply voltage range extends to 36 V maximum, matching the TL3474CDR specification. Extended temperature operation (-40°C to 125°C) is supported.
The ADTL084ARZ-REEL (Analog Devices Inc.) provides the lowest input bias current specification (2 pA) with 20 V/µs slew rate and 5 MHz gain-bandwidth product. This part is available in Tape & Reel packaging and supports -40°C to 125°C operating range.
The LF247DT and LF347DT (STMicroelectronics) are J-FET amplifiers with 16 V/µs slew rate and 4 MHz gain-bandwidth product (LF247DT) or 4 MHz (LF347DT). Input bias current is specified at 20 pA. Both support extended temperature operation. The LF347DT is available in Cut Tape & Digi-Reel format with 0°C to 70°C operating range matching the TL3474CDR. The LF247DT supports -40°C to 105°C operation in Tape & Reel packaging.
All substitute parts are Active product status with ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.
Frequently Asked Questions (FAQ)
Q: Can the LM2902 series directly replace the TL3474CDR in all applications?
A: The LM2902DR2G and LM2902EDR2G are functionally equivalent in terms of circuit count (4), package type (14-SOIC), and mounting method (surface mount). However, the LM2902 series has lower gain-bandwidth product (1 MHz versus 4 MHz) and unspecified slew rate. These parts are suitable for applications where the TL3474CDR's performance specifications exceed system requirements. Verify that your application does not require the higher bandwidth and slew rate of the TL3474CDR before substitution.
Q: What are the advantages of J-FET input amplifiers over the general-purpose TL3474CDR?
A: J-FET input amplifiers (AD8513, ADA4000, ADTL084, LF247, LF347 series) provide significantly lower input bias current (2 to 25 pA versus 100 nA) and lower input offset voltage (100 µV to 1.5 mV versus 1 mV). These characteristics make J-FET devices superior for high-impedance signal sources, precision instrumentation, and applications sensitive to input current leakage. J-FET substitutes also offer higher slew rates (16 to 20 V/µs versus 13 V/µs) and extended operating temperature ranges.
Q: Are all substitute parts available in the same packaging format as the TL3474CDR?
A: The TL3474CDR is supplied in Tape & Reel (TR) packaging. Substitute parts are available in multiple packaging formats: Tape & Reel (AD8513ARZ-REEL, ADTL084ARZ-REEL, LF247DT, LM2902EDR2G), Cut Tape & Digi-Reel (AD8513ARZ-REEL7, ADA4000-4ARZ-R7, LF347DT, LM2902DR2G), and Tube (ADA4000-4ARZ, LF347D). Verify packaging compatibility with your assembly process before component selection.
Q: Do all substitute parts meet the same compliance standards as the TL3474CDR?
A: All listed substitute parts are RoHS3 compliant and have Moisture Sensitivity Level 1 (Unlimited), matching the TL3474CDR specifications. All parts are classified as Active product status. REACH status is Unaffected for all parts. ECCN classification is EAR99 for all parts. Compliance certifications are equivalent across all substitutes.
Q: What is the supply voltage compatibility between the TL3474CDR and J-FET substitutes?
A: The TL3474CDR operates from 4 V to 36 V supply span. Most J-FET substitutes require higher minimum supply voltage: AD8513 series requires 10 V minimum, ADA4000 and ADTL084 require 8 V minimum, and LF247/LF347 require 44 V fixed supply. Verify that your power supply design accommodates the minimum voltage requirement of the selected substitute before implementation.
Q: Which substitute offers the best performance for low-noise, high-impedance applications?
A: The ADTL084ARZ-REEL provides the lowest input bias current (2 pA) and is optimized for applications requiring minimal input current leakage. The ADA4000-4ARZ and ADA4000-4ARZ-R7 also offer extremely low input bias current (5 pA) with lower supply current consumption (1.35 mA versus 3.5 mA for the TL3474CDR). Both are suitable for precision measurement and high-impedance signal conditioning applications.
Q: Can I use the LF347D (Tube packaging) in place of the TL3474CDR (Tape & Reel)?
A: The LF347D has identical electrical specifications to the LF347DT (Cut Tape & Digi-Reel variant) but is supplied in Tube packaging format. Tube packaging is incompatible with automated tape-fed assembly equipment. Use the LF347DT variant if your assembly process requires tape-and-reel or cut-tape format. The LF347D is suitable only for manual assembly or reel-fed processes that accept tube packaging.
Q: What is the inventory status of substitute parts?
A: Inventory availability varies by part number. AD8513ARZ-REEL7 has the highest inventory (17,697 pcs), followed by LF347DT (27,321 pcs) and LM2902DR2G (205,100 pcs). The TL3474CDR has 16,615 pcs in stock. Verify current inventory status with your supplier before finalizing component selection for production quantities.
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