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TL974IDG4 Equivalent & Substitute Parts
Part Overview
The TL974IDG4 is a general-purpose operational amplifier featuring four independent circuits in a 14-SOIC surface-mount package. Manufactured by Texas Instruments, this rail-to-rail amplifier is designed for applications requiring low-power, general-purpose signal conditioning and amplification across supply voltages from 2.7V to 12V.
The TL974IDG4 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 5 | V/µs |
| Gain Bandwidth Product | 12 | MHz |
| Current - Input Bias | 200 | nA |
| Voltage - Input Offset | 1 | mV |
| Current - Supply (per 4 Channels) | 2 | mA |
| Current - Output / Channel | 80 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 12 | V |
| Operating Temperature | -40 to 125 | °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 TL974IDG4 are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:
Primary Compatibility Criteria:
- Amplifier Type: General Purpose
- Number of Circuits: 4
- Output Type: Rail-to-Rail
- Package / Case: 14-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Voltage - Supply Span: Minimum 2.7V, Maximum ≥12V
- Operating Temperature Range: Must support -40°C to 125°C
Secondary Performance Parameters:
- Slew Rate: 5V/µs (baseline)
- Gain Bandwidth Product: 12 MHz (baseline)
- Current - Input Bias: 200 nA (baseline)
- Voltage - Input Offset: 1 mV (baseline)
- Current - Supply: 2mA per 4 channels (baseline)
- Current - Output / Channel: 80 mA (baseline)
Substitute parts may exceed baseline performance specifications while maintaining full electrical and mechanical compatibility. Parts with reduced performance specifications are included only when all primary criteria are met and supply voltage and temperature ranges are fully supported.
Parameter Comparison
| Parameter | TL974IDG4 | TL974ID | AD8040ARZ-REEL | AD8040ARZ-REEL7 | OP481GSZ-REEL7 | TS974IDT |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | STMicroelectronics |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Slew Rate (V/µs) | 5 | 5 | 63 | 63 | 0.028 | 4 |
| Gain Bandwidth Product (MHz) | 12 | 12 | 125 | 125 | 0.105 | 12 |
| Current - Input Bias (nA) | 200 | 200 | 700 | 700 | 3 | 200 |
| Voltage - Input Offset (mV) | 1 | 1 | 1.6 | 1.6 | 0.1 | 1 |
| Current - Supply per 4 Channels (mA) | 2 | 2 | 1.4 | 1.4 | 0.0033 | 2 |
| Current - Output / Channel (mA) | 80 | 80 | 170 | 170 | 12 | 100 |
| Voltage - Supply Span Min (V) | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 |
| Voltage - Supply Span Max (V) | 12 | 12 | 12 | 12 | 12 | 10 |
| Operating Temperature (°C) | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Package / Case | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
TL974ID (Texas Instruments)
The TL974ID is the direct active-production equivalent of the TL974IDG4. This part maintains identical electrical specifications across all measured parameters: 5V/µs slew rate, 12 MHz gain bandwidth product, 200 nA input bias current, and 80 mA output current per channel. The TL974ID differs only in packaging format (Tube versus Digi-Reel) and product status (Active versus Obsolete). This part is the primary recommended substitute for direct replacement in existing designs. Inventory availability is 2192 units.
AD8040ARZ-REEL and AD8040ARZ-REEL7 (Analog Devices Inc.)
The AD8040ARZ-REEL and AD8040ARZ-REEL7 are functionally equivalent four-circuit rail-to-rail amplifiers in 14-SOIC packaging. These parts exceed baseline performance specifications with 63V/µs slew rate and 125 MHz gain bandwidth product. Input bias current is 700 nA and input offset voltage is 1.6 mV, both within acceptable tolerance for general-purpose applications. Supply current is reduced to 1.4mA per four channels, and output current capability is increased to 170 mA per channel. Both parts support the full -40°C to 125°C operating temperature range and 2.7V to 12V supply span. The AD8040ARZ-REEL7 offers higher inventory availability (2680 units) compared to AD8040ARZ-REEL (1079 units).
OP481GSZ-REEL7 (Analog Devices Inc.)
The OP481GSZ-REEL7 is a four-circuit rail-to-rail amplifier in 14-SOIC packaging with significantly reduced power consumption. This part features 3 nA input bias current, 100 µV input offset voltage, and 3.3µA supply current per four channels. However, the OP481GSZ-REEL7 exhibits reduced dynamic performance with 0.028V/µs slew rate and 105 kHz gain bandwidth product. This part is suitable only for applications where low power consumption is prioritized over signal bandwidth and slew rate performance. Operating temperature range is -40°C to 125°C, and supply span is 2.7V to 12V. Inventory availability is 1276 units.
TS974IDT (STMicroelectronics)
The TS974IDT is a four-circuit rail-to-rail amplifier in 14-SOIC packaging with automotive-grade qualification (AEC-Q100). Electrical specifications closely match the TL974IDG4: 4V/µs slew rate, 12 MHz gain bandwidth product, 200 nA input bias current, and 1 mV input offset voltage. Output current capability is 100 mA per channel. The maximum supply voltage is 10V, which is below the TL974IDG4 specification of 12V. Operating temperature range is -40°C to 125°C. This part is suitable for automotive applications requiring qualified components. Inventory availability is 3042 units.
Frequently Asked Questions (FAQ)
Q: Can the TL974ID be used as a direct replacement for the TL974IDG4?
A: Yes. The TL974ID is electrically and mechanically identical to the TL974IDG4. Both parts feature identical slew rate (5V/µs), gain bandwidth product (12 MHz), input bias current (200 nA), input offset voltage (1 mV), supply current (2mA per four channels), and output current (80 mA per channel). The only difference is packaging format and product status. The TL974ID is the recommended primary substitute.
Q: What is the difference between AD8040ARZ-REEL and AD8040ARZ-REEL7?
A: Both parts are electrically identical. The difference is in packaging format: AD8040ARZ-REEL is supplied in Tape & Reel (TR) format, while AD8040ARZ-REEL7 is supplied in Cut Tape (CT) & Digi-Reel® format. The AD8040ARZ-REEL7 has higher inventory availability (2680 units versus 1079 units).
Q: Can I use the OP481GSZ-REEL7 in place of the TL974IDG4?
A: The OP481GSZ-REEL7 is mechanically compatible (14-SOIC package, four circuits, rail-to-rail output) and supports the same supply voltage and temperature ranges. However, performance specifications differ significantly. The OP481GSZ-REEL7 has much lower slew rate (0.028V/µs versus 5V/µs) and gain bandwidth product (105 kHz versus 12 MHz). Use this part only in applications where low power consumption is the primary requirement and signal bandwidth is not critical.
Q: What is the maximum supply voltage for the TS974IDT?
A: The TS974IDT supports a maximum supply voltage of 10V, compared to 12V for the TL974IDG4. If your application requires operation at 12V, the TS974IDT is not suitable. For applications operating at 10V or below, the TS974IDT is fully compatible.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed (TL974ID, AD8040ARZ-REEL, AD8040ARZ-REEL7, OP481GSZ-REEL7, and TS974IDT) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).
Q: Which substitute part offers the best performance improvement?
A: The AD8040ARZ-REEL and AD8040ARZ-REEL7 offer the highest performance specifications with 63V/µs slew rate and 125 MHz gain bandwidth product, compared to 5V/µs and 12 MHz for the TL974IDG4. These parts also provide increased output current capability (170 mA per channel versus 80 mA) and reduced supply current (1.4mA versus 2mA per four channels).
Q: Is the TS974IDT suitable for automotive applications?
A: Yes. The TS974IDT carries automotive-grade qualification (AEC-Q100) and is suitable for automotive applications. The TL974ID, AD8040ARZ-REEL, AD8040ARZ-REEL7, and OP481GSZ-REEL7 do not carry automotive qualification.
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