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Texas Instruments TL3474IN
- Part No.:
- TL3474IN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TL3474IN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,079
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Product details
Overview
TL3474IN from Texas Instruments is a quad, high-slew-rate, single-supply operational amplifier optimized for industrial and measurement applications. It delivers 4.5 MHz gain-bandwidth, 10 V/μs positive slew rate, and operates from 4 V to 36 V with input common-mode range extending to ground (VCC−). It is used in SAR ADC reference buffers and low-side current sensing circuits.
For engineers reviewing the TL3474IN datasheet, TL3474IN pinout, TL3474IN application, or TL3474IN equivalent, key selection criteria include single-supply rail-to-rail input capability, 4-channel channel separation >100 dB, thermal performance in PDIP-14 package, and compatibility with ±15 V or 5 V–36 V supply configurations.
Technical Context
The TL3474IN uses bipolar fabrication to achieve low input offset voltage (≤3 mV max), high input resistance (540 GΩ), and robust output short-circuit protection. Its design supports wide common-mode input range down to VCC−, enabling direct interfacing with ground-referenced sensors and multiplexed signal chains.
It features matched internal quad amplifiers with 101 dB channel separation at 10 kHz and stable unity-gain operation up to 85 kHz power bandwidth. The device maintains 70° phase margin with 2 kΩ load and no external capacitance, supporting reliable closed-loop performance in precision analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5 MHz - enables stable unity-gain operation up to 85 kHz and supports fast settling in ADC driver stages |
| Positive slew rate | 10 V/μs - ensures accurate reproduction of fast-rising signals in test equipment and PLC analog I/O |
| Input offset voltage (max) | 3 mV - limits DC error in precision current sensing and reference buffering below 0.1% full-scale impact |
| Supply voltage range | 4 V to 36 V - supports single-rail operation across 5 V microcontroller systems and 24 V industrial control rails |
| Common-mode input range | Includes ground (VCC−) - allows direct connection to low-side shunt resistors without level-shifting circuitry |
| Channel separation | 101 dB at 10 kHz - minimizes crosstalk between channels in multiplexed data acquisition systems |
| Input bias current (max) | 500 nA - preserves accuracy when driving high-impedance sources such as piezoelectric sensors or thermocouple amplifiers |
Pinout & Package
TL3474IN is supplied in a 14-pin plastic dual in-line package (PDIP-N), measuring 19.30 mm × 9.40 mm, with through-hole mounting and industry-standard lead spacing (1.27 mm pitch). The package provides robust thermal performance (θJA = 80 °C/W) and is RoHS-compliant with NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplified output of first op-amp; capable of sourcing/sinking ±80 mA with short-circuit protection |
| 1IN–, 1IN+ | Inverting/non-inverting inputs, channel 1 | Differential pair accepting signals within VCC− to (VCC+ − 2.2 V); common-mode includes ground |
| VCC+ | Positive supply | Primary power rail; accepts 4 V–36 V; total current into this pin ≤80 mA |
| 2IN+, 2IN–, 2OUT | Inputs/output, channel 2 | Electrically identical to channel 1; 101 dB isolation prevents interference in multi-channel designs |
| 3OUT, 3IN–, 3IN+ | Inputs/output, channel 3 | Third independent amplifier; shares same supply and thermal characteristics as other channels |
| VCC– / GND | Negative supply or ground reference | Supports true single-supply operation; tied to system ground when using 5 V–36 V unipolar supplies |
| 4IN+, 4IN–, 4OUT | Inputs/output, channel 4 | Fourth amplifier; fully matched performance enables simultaneous sampling or parallel signal conditioning |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation with rail-to-rail input | Enables direct interface to ground-referenced transducers without level-shifting components or negative rails |
| 4.5 MHz gain-bandwidth product | Supports stable closed-loop gain ≥10 at 450 kHz, suitable for anti-aliasing filters and active instrumentation amplifiers |
| Output short-circuit protection | Prevents latch-up or damage during transient overloads in industrial I/O modules and motor control feedback paths |
| Low input offset voltage (≤3 mV) | Reduces calibration burden in programmable logic controller analog input cards and precision sensor signal chains |
| High input resistance (540 GΩ) | Maintains signal integrity when buffering high-impedance sources like pH electrodes or photodiode transimpedance outputs |
Applications
| Multiplexed Data-Acquisition Systems | Test and Measurement Equipment |
|---|---|
Use Scenario: Simultaneous sampling of multiple sensor channels via analog multiplexer feeding a shared ADC. IC Role / Device Role / Timing Role: Quad op-amp provides per-channel signal conditioning, buffer isolation, and drive strength for multiplexer output stage. Use Value: 101 dB channel separation prevents crosstalk-induced measurement errors; 4.5 MHz GBW supports fast settling after channel switching. | Use Scenario: Front-end amplification and filtering in benchtop multimeters and oscilloscope input stages. IC Role / Device Role / Timing Role: Configured as precision non-inverting amplifier and active filter to condition low-level signals before digitization. Use Value: 3 mV max offset and 10 V/μs slew rate enable accurate DC/AC measurements with minimal distortion up to 10 kHz. |
| ADC Driver Amplifiers | Low-Side Current Sensing |
Use Scenario: Driving SAR ADC inputs with fast settling and low THD in data loggers and energy meters. IC Role / Device Role / Timing Role: Unity-gain buffer isolating ADC input from source impedance; configured for minimum noise and charge kickback rejection. Use Value: 2 μs settling to 0.1% and 0.02% THD at 10 kHz ensure fidelity in high-resolution (≥16-bit) conversion cycles. | Use Scenario: Amplifying voltage across shunt resistor placed between load and ground in motor drives or power supplies. IC Role / Device Role / Timing Role: Non-inverting amplifier referenced to ground, leveraging rail-to-rail input to sense near-zero common-mode voltages. Use Value: Input common-mode range including VCC− eliminates need for level shifters; 500 nA max input bias avoids shunt error contributions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34074N | Lower gain-bandwidth (1.3 MHz), higher input offset (7 mV max), no guaranteed 4 V min supply | Less suitable for high-speed ADC drivers or low-voltage single-supply systems | Select TL3474IN where ≥4.5 MHz GBW, ≤3 mV offset, or 4 V operation is required |
| TL084CN | JFET input (higher input impedance), higher VIO (15 mV max), no short-circuit protection | Better for ultra-high-Z sources but less robust in industrial overload conditions | Choose TL3474IN for ruggedized industrial use with ground-sensing capability and built-in fault tolerance |
Compared with MC34074N and TL084CN, TL3474IN offers superior speed, tighter DC precision, and integrated protection-making it optimal for cost-sensitive, high-reliability industrial signal conditioning where single-supply simplicity and channel density are critical.
Availability
TL3474IN is available at Aetrix Electronics and suitable for programmable logic controllers, test equipment, and low-side current sensing applications requiring stable component supply across extended temperature ranges (–40°C to +105°C).
Supply support for TL3474IN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision op-amps and industrial-grade ICs.
The TL3474 family was designed for cost-effective, high-performance analog signal conditioning in industrial automation, test instrumentation, and data acquisition-emphasizing single-supply operation, robustness, and quad integration.
FAQ
What is the operating temperature range for TL3474IN?
The TL3474IN is rated for operation from –40°C to +105°C, making it suitable for industrial environments including programmable logic controllers and motor control systems exposed to wide ambient variations. This extended temperature grade is confirmed in the "Recommended Operating Conditions" table of the official TI datasheet SLVS461C, and applies specifically to the TL3474IN variant with PDIP packaging and N-suffix marking.
Does TL3474IN support true single-supply operation with input down to ground?
Yes, TL3474IN supports true single-supply operation with input common-mode voltage range extending to VCC− (ground when VCC− is tied to GND). This is explicitly specified in the datasheet's "Recommended Operating Conditions" and "Electrical Characteristics" tables, enabling direct interfacing with ground-referenced sensors and eliminating the need for level-shifting circuitry in low-side current sensing applications.
What package type and dimensions does TL3474IN use?
TL3474IN uses a 14-pin plastic dual in-line package (PDIP-N) with dimensions 19.30 mm × 9.40 mm and standard 0.100″ (2.54 mm) row spacing. Lead finish is NiPdAu, RoHS-compliant, and the package has θJA = 80 °C/W. This mechanical configuration is documented in TI's "Mechanical, Packaging, and Orderable Information" section and verified in the PACKAGE OPTION ADDENDUM dated 10-Mar-2026.
How does TL3474IN differ from TL3474A variants?
TL3474IN belongs to the standard-grade TL3474 series (not the 'A' grade), meaning its maximum input offset voltage is 3 mV (vs. 3 mV max for TL3474A), and it shares identical AC performance (4.5 MHz GBW, 10 V/μs slew rate) and pinout. The 'I' suffix denotes –40°C to +105°C operation, while 'N' specifies PDIP packaging-both attributes confirmed in TI's orderable part number matrix for TL3474IN.
Is TL3474IN pin-compatible with MC34074 or MC33074?
Yes, TL3474IN is pin-compatible with MC34074 and MC33074 in the 14-pin PDIP package, sharing identical pin functions and layout per TI's "Alternative to MC33074/A and MC34074/A" statement in the Features section. This allows drop-in replacement in legacy designs, though TL3474IN offers improved gain-bandwidth (4.5 MHz vs. 1.3 MHz) and lower offset voltage (3 mV vs. 7 mV max).
TL3474IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 3.5mA (x4 Channels)
- Current - Output / Channel:
- 34 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TL3474IN FAQ
1.How can I place an order for TL3474IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474IN on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TL3474IN reliable?
The price and inventory of TL3474IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474IN is usually 5 days.
3.What payment methods are accepted for TL3474IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474IN?
TL3474IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474IN order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TL3474IN?
For technical support, including TL3474IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474IN requirements.
6.How does Aetrix verify that TL3474IN is sourced from the original manufacturer or authorized distributors?
All TL3474IN products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TL3474IN meets industry standards.
7.What is the process for return or replacement of TL3474IN?
All TL3474IN units undergo pre-shipment inspection (PSI). If there is an issue with TL3474IN, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TL3474IN part is unused and in its original packaging.
Return procedure for TL3474IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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