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TL064IDRG4 Equivalent & Substitute Parts
Part Overview
The TL064IDRG4 is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a 4-circuit integrated circuit in 14-SOIC surface mount packaging. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The TL064IDRG4 operates across a supply voltage range of 10V to 30V with an input bias current of 30 pA and a slew rate of 3.5V/µs, making it suitable for precision analog signal processing applications requiring low input bias current characteristics.
Substitute parts are necessary due to the Last Time Buy status of the TL064IDRG4. Alternative components with equivalent or enhanced electrical specifications and active product status ensure design continuity and long-term supply chain reliability.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | — |
| Number of Circuits | 4 | — |
| Slew Rate | 3.5 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 30 | pA |
| Voltage - Input Offset | 3 | mV |
| Current - Supply (per 4 Channels) | 200 | µA |
| Current - Output / Channel | 20 | mA |
| Voltage - Supply Span (Min) | 10 | V |
| Voltage - Supply Span (Max) | 30 | V |
| Operating Temperature Range | -40 to 85 | °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 TL064IDRG4 are categorized based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:
Critical Substitution Parameters:
- Amplifier Type (J-FET vs. General Purpose)
- Number of Circuits (4 required)
- Package / Case (14-SOIC form factor)
- Mounting Type (Surface Mount)
- Voltage Supply Range compatibility
- Operating Temperature Range coverage
Substitution Categories:
Category 1: Direct J-FET Equivalents (Highest Compatibility) Parts maintaining J-FET amplifier type with 4 circuits in 14-SOIC packaging. These include TL064IDR (Texas Instruments, Active status) and TL064IDT (STMicroelectronics, Active status). Both provide identical electrical specifications to the main part with enhanced supply voltage ranges and extended temperature ratings.
Category 2: Enhanced J-FET Alternatives Parts with J-FET amplifier type, 4 circuits, and 14-SOIC packaging but with improved performance characteristics. LF247DT and LF347DT (STMicroelectronics) offer higher slew rates (16V/µs) and increased gain bandwidth products (3-4 MHz), suitable for applications requiring faster signal response.
Category 3: General Purpose Alternatives Parts with General Purpose amplifier type, 4 circuits, and 14-SOIC packaging. AS324AMTR-E1, AS324AMTR-G1, and AS324MTR-G1 (Diodes Incorporated) provide broader supply voltage ranges (3V to 36V) and higher output current capability (40 mA per channel), though with different input bias current characteristics (20 nA vs. 30 pA).
Category 4: Extended Temperature Range Alternatives Parts with General Purpose amplifier type and extended operating temperature ranges. LM124DT (STMicroelectronics, -55°C to 125°C) and LM2902AQS14-13 (Diodes Incorporated, -40°C to 125°C, AEC-Q100 automotive qualified) provide wider temperature coverage for demanding applications.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Circuits | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA/nA) | Input Offset (mV) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TL064IDRG4 | Texas Instruments | J-FET | 4 | 3.5 | 1 | 30 pA | 3 | 10 | 30 | -40 to 85 | Last Time Buy |
| TL064IDR | Texas Instruments | J-FET | 4 | 3.5 | 1 | 30 pA | 3 | 10 | 30 | -40 to 85 | Active |
| TL064IDT | STMicroelectronics | J-FET | 4 | 3.5 | 1 | 30 pA | 3 | 6 | 36 | -40 to 105 | Active |
| AS324AMTR-E1 | Diodes Incorporated | General Purpose | 4 | — | — | 20 nA | 2 | 3 | 36 | -40 to 85 | Active |
| AS324AMTR-G1 | Diodes Incorporated | General Purpose | 4 | — | — | 20 nA | 2 | 3 | 36 | -40 to 85 | Active |
| AS324MTR-G1 | Diodes Incorporated | General Purpose | 4 | — | — | 20 nA | 2 | 3 | 36 | -40 to 85 | Active |
| LF247DT | STMicroelectronics | J-FET | 4 | 16 | 4 | 20 pA | 3 | 44 | 44 | -40 to 105 | Active |
| LF347D | STMicroelectronics | J-FET | 4 | 16 | 3 | 20 pA | 3 | 44 | 44 | 0 to 70 | Active |
| LF347DT | STMicroelectronics | J-FET | 4 | 16 | 4 | 20 pA | 3 | 44 | 44 | 0 to 70 | Active |
| LM124DT | STMicroelectronics | General Purpose | 4 | 0.4 | 1.3 | 20 nA | 2 | 3 | 30 | -55 to 125 | Active |
| LM2902AQS14-13 | Diodes Incorporated | General Purpose | 4 | 0.3 | 0.7 | 20 nA | 2 | 2 | 36 | -40 to 125 | Active |
Engineering Selection Recommendations
For Direct Replacement with Active Product Status:
TL064IDR (Texas Instruments) is the primary recommended substitute. This part maintains identical electrical specifications to the TL064IDRG4 while offering Active product status and significantly higher inventory availability (35,100 units). The only packaging difference is Cut Tape (CT) & Digi-Reel® versus Tape & Reel (TR), which does not affect electrical compatibility or PCB assembly compatibility.
For Enhanced Performance with Extended Supply Range:
TL064IDT (STMicroelectronics) provides identical J-FET amplifier characteristics with an extended supply voltage range (6V to 36V versus 10V to 30V) and extended operating temperature range (-40°C to 105°C versus -40°C to 85°C). This part is suitable for applications requiring broader environmental operating conditions while maintaining the same core J-FET input characteristics.
For High-Speed Applications:
LF247DT and LF347DT (STMicroelectronics) offer significantly enhanced performance with slew rates of 16V/µs and gain bandwidth products of 3-4 MHz, compared to the TL064IDRG4's 3.5V/µs and 1 MHz. These parts are suitable for applications requiring faster signal response and higher frequency operation. Note that LF347D and LF347DT have a fixed supply voltage of ±22V (44V span), which differs from the TL064IDRG4's variable range.
For Broad Supply Voltage Range Applications:
AS324MTR-G1 (Diodes Incorporated) provides the highest inventory availability (196,751 units) with a supply voltage range of 3V to 36V, enabling operation in low-voltage and high-voltage environments. This General Purpose amplifier type differs from the J-FET input of the TL064IDRG4, with input bias current of 20 nA versus 30 pA and higher output current capability (40 mA per channel versus 20 mA).
For Extended Temperature Range Applications:
LM2902AQS14-13 (Diodes Incorporated) provides the widest operating temperature range (-40°C to 125°C) with AEC-Q100 automotive qualification. This part is suitable for automotive and industrial applications requiring extended temperature coverage and formal qualification documentation.
Compliance and Certification:
All substitute parts listed maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, matching the regulatory profile of the TL064IDRG4. Moisture Sensitivity Level (MSL) ratings are 1 (Unlimited) for most parts, with AS324AMTR-G1 rated at MSL 3 (168 Hours), requiring appropriate handling during storage and assembly.
Frequently Asked Questions (FAQ)
Q: Can TL064IDR be used as a direct drop-in replacement for TL064IDRG4?
A: Yes. TL064IDR is electrically identical to TL064IDRG4 with matching J-FET amplifier type, 4 circuits, slew rate (3.5V/µs), gain bandwidth product (1 MHz), input bias current (30 pA), and operating temperature range (-40°C to 85°C). The packaging difference (Cut Tape & Digi-Reel® versus Tape & Reel) does not affect PCB assembly compatibility or electrical performance. Both use 14-SOIC surface mount packages with identical pinouts.
Q: What is the key difference between J-FET and General Purpose amplifier types in the substitute list?
A: J-FET amplifiers (TL064IDR, TL064IDT, LF247DT, LF347DT) feature extremely low input bias current (20-30 pA), making them suitable for high-impedance signal sources and precision measurement applications. General Purpose amplifiers (AS324 series, LM124DT, LM2902AQS14-13) have higher input bias current (20 nA) but offer broader supply voltage ranges and higher output current capability. Selection depends on whether the application requires the low input bias current characteristic of J-FET devices.
Q: Are the LF247DT and LF347DT suitable replacements for the TL064IDRG4?
A: LF247DT and LF347DT are functionally compatible as 4-circuit J-FET amplifiers in 14-SOIC packaging. However, they feature significantly higher slew rates (16V/µs versus 3.5V/µs) and gain bandwidth products (3-4 MHz versus 1 MHz). These parts are suitable for applications requiring faster signal response. The fixed supply voltage of ±22V (44V span) differs from the TL064IDRG4's 10V to 30V range, requiring verification that the application's power supply design accommodates this specification.
Q: Can AS324MTR-G1 replace TL064IDRG4 in all applications?
A: AS324MTR-G1 is mechanically and electrically compatible in terms of package (14-SOIC), circuit count (4), and surface mount assembly. However, it is a General Purpose amplifier with 20 nA input bias current versus the TL064IDRG4's 30 pA J-FET input. Applications requiring extremely low input bias current for high-impedance signal sources should use J-FET alternatives (TL064IDR or TL064IDT). AS324MTR-G1 offers superior supply voltage range (3V to 36V) and higher output current (40 mA per channel), making it suitable for broader voltage and current applications.
Q: What is the significance of the Last Time Buy status for TL064IDRG4?
A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TL064IDRG4. Current inventory (1,900 units) 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 TL064IDR (Texas Instruments, Active status) or TL064IDT (STMicroelectronics, Active status) to ensure long-term supply chain continuity and avoid future obsolescence issues.
Q: How do moisture sensitivity levels (MSL) affect component handling?
A: Most substitute parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and assembly. AS324AMTR-G1 carries MSL 3 (168 Hours), requiring that the component be used within 168 hours of opening the moisture barrier bag. MSL 3 components require controlled storage conditions and may necessitate baking procedures before reflow soldering if storage time exceeds the specified limit. Verify handling procedures with your assembly partner when using MSL 3 components.
Q: What packaging options are available for substitute parts?
A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and Tube. All parts maintain the same 14-SOIC surface mount package form factor (0.154", 3.90mm width) with identical pinouts. Packaging format selection depends on assembly volume and equipment compatibility. High-volume production typically uses Tape & Reel or Cut Tape & Digi-Reel® formats, while lower volumes may use Tube packaging.
Q: Are there temperature range considerations when selecting a substitute?
A: The TL064IDRG4 operates from -40°C to 85°C. Substitute parts offer varying temperature ranges: TL064IDT extends to 105°C, LF247DT to 105°C, LM124DT to 125°C, and LM2902AQS14-13 to 125°C. Applications operating at temperatures above 85°C require selection of parts with extended temperature ratings. Conversely, applications with narrower temperature requirements (such as LF347D and LF347DT at 0°C to 70°C) may be suitable for controlled environment applications.
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