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TLC2574IPWG4 Equivalent & Substitute Parts
Part Overview
The TLC2574IPWG4 is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for data acquisition applications requiring moderate sampling rates and flexible input configurations. This device features a Successive Approximation Register (SAR) architecture with support for 2 or 4 input channels, pseudo-differential or single-ended input types, and SPI data interface.
The TLC2574IPWG4 is currently discontinued at DiGi Electronics. Locating equivalent or substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resolution | 12 Bits |
| Sampling Rate | 200 kSPS |
| Number of Input Channels | 2, 4 |
| Input Type | Pseudo-Differential, Single Ended |
| Data Interface | SPI |
| Architecture | SAR |
| Reference Type | External |
| Analog Supply Voltage | 5V |
| Digital Supply Voltage | 2.7V ~ 5.5V |
| Operating Temperature Range | -40°C ~ 85°C |
| Package Type | 20-TSSOP |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution of the TLC2574IPWG4 is determined by strict equivalence across the following critical parameters:
- Resolution and Sampling Rate: 12-bit resolution at 200 kSPS
- Input Configuration: Support for 2 or 4 channels with pseudo-differential and single-ended input capability
- Data Interface: SPI protocol compatibility
- Architecture: SAR-based conversion
- Supply Voltage Compatibility: Analog supply at 5V and digital supply range of 2.7V ~ 5.5V
- Package and Pinout: 20-TSSOP surface mount package with identical pin configuration
- Operating Temperature: -40°C ~ 85°C range
The substitute part TLC2574IPW meets all these criteria and is therefore a direct functional equivalent.
Parameter Comparison
| Parameter | TLC2574IPWG4 (Main Part) | TLC2574IPW (Substitute) |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Resolution | 12 Bits | 12 Bits |
| Sampling Rate | 200 kSPS | 200 kSPS |
| Number of Input Channels | 2, 4 | 2, 4 |
| Input Type | Pseudo-Differential, Single Ended | Pseudo-Differential, Single Ended |
| Data Interface | SPI | SPI |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Analog Supply Voltage | 5V | 5V |
| Digital Supply Voltage | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Package Type | 20-TSSOP | 20-TSSOP |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Product Status | Discontinued at DiGi Electronics | Last Time Buy |
Engineering Selection Recommendations
The TLC2574IPW is the direct substitute for the TLC2574IPWG4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, pinout, and package configuration. The primary distinction is product status: the TLC2574IPWG4 is discontinued, while the TLC2574IPW is in Last Time Buy status with significantly higher inventory availability (2715 units versus 824 units).
Both parts maintain full compliance with ROHS3 and REACH requirements, ensuring regulatory compatibility for new designs and legacy system support. The TLC2574IPW is suitable for direct replacement in applications currently using the TLC2574IPWG4, with no design modifications required.
Frequently Asked Questions (FAQ)
Q: Can the TLC2574IPW be used as a direct replacement for the TLC2574IPWG4?
A: Yes. Both parts are electrically and mechanically identical. The TLC2574IPW uses the same 20-TSSOP package, supports identical input configurations (2 or 4 channels), and operates within the same supply voltage and temperature ranges. No PCB modifications or firmware changes are necessary.
Q: What is the difference between the TLC2574IPWG4 and TLC2574IPW?
A: The primary difference is packaging format. The TLC2574IPWG4 is supplied in tape and reel format, while the TLC2574IPW is supplied in tube packaging. Functionally and electrically, the parts are equivalent.
Q: Are there any compliance or certification differences?
A: No. Both parts maintain identical RoHS3 compliance, REACH unaffected status, and Moisture Sensitivity Level 1 (unlimited). Both are suitable for applications with equivalent regulatory requirements.
Q: What is the significance of "Last Time Buy" status for the TLC2574IPW?
A: Last Time Buy status indicates that the TLC2574IPW will not be manufactured beyond a specified date. Current inventory is available, but future availability is limited. For long-term production requirements, secure inventory during the Last Time Buy window or identify alternative architectures with extended lifecycle support.
Q: Can I use the TLC2574IPW in new designs?
A: Yes, the TLC2574IPW is suitable for new designs. However, given its Last Time Buy status, consider long-term supply chain implications and evaluate alternative 12-bit SAR ADCs with extended product lifecycles if production volumes or timelines extend beyond the Last Time Buy period.
Q: Are the pin configurations identical between these parts?
A: Yes. Both the TLC2574IPWG4 and TLC2574IPW use the 20-TSSOP package with identical pinout. No layout modifications are required for substitution.
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