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AM1705BPTPD4 Equivalent & Substitute Parts
Part Overview
The AM1705BPTPD4 is an ARM926EJ-S Microprocessor IC from Texas Instruments' Sitara™ series, featuring a single 32-bit core operating at 456MHz in a 176-HLQFP (24x24) package. This embedded processor integrates system control, SDRAM controllers, and multiple communication interfaces including Ethernet (10/100Mbps), USB 2.0, I2C, SPI, and UART.
The AM1705BPTPD4 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this microprocessor.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Core Processor | ARM926EJ-S |
| Number of Cores/Bus Width | 1 Core, 32-Bit |
| Speed | 456MHz |
| Co-Processors/DSP | System Control; CP15 |
| RAM Controllers | SDRAM |
| Ethernet | 10/100Mbps (1) |
| USB | USB 2.0 + PHY (1) |
| Voltage - I/O | 1.8V, 3.3V |
| Operating Temperature | -40°C ~ 90°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 176-LQFP Exposed Pad |
| Supplier Device Package | 176-HLQFP (24x24) |
| Additional Interfaces | I2C, McASP, SPI, MMC/SD, UART |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 4 (72 Hours) |
Substitute Part Grouping Explanation
Substitution eligibility for the AM1705BPTPD4 is determined by strict equivalence across the following critical parameters:
- Core Architecture: ARM926EJ-S processor with identical instruction set and performance characteristics
- Clock Speed: 456MHz operation
- Core Configuration: Single 32-bit core
- Co-Processor Features: System Control and CP15 support
- Memory Interface: SDRAM controller compatibility
- Peripheral Integration: Ethernet (10/100Mbps), USB 2.0 + PHY, I2C, McASP, SPI, MMC/SD, UART
- Electrical Specifications: 1.8V and 3.3V I/O voltage support; -40°C to 90°C operating temperature range
- Package Specification: 176-HLQFP (24x24) with exposed pad; 176-LQFP footprint compatibility
- Compliance Standards: ROHS3 compliance; MSL 4 rating; REACH unaffected status
The AM1705DPTPD4 meets all substitution criteria as a direct equivalent part.
Parameter Comparison
| Parameter | AM1705BPTPD4 | AM1705DPTPD4 |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Series | Sitara™ | Sitara™ |
| Product Status | Obsolete | Active |
| Core Processor | ARM926EJ-S | ARM926EJ-S |
| Number of Cores/Bus Width | 1 Core, 32-Bit | 1 Core, 32-Bit |
| Speed | 456MHz | 456MHz |
| Co-Processors/DSP | System Control; CP15 | System Control; CP15 |
| RAM Controllers | SDRAM | SDRAM |
| Ethernet | 10/100Mbps (1) | 10/100Mbps (1) |
| USB | USB 2.0 + PHY (1) | USB 2.0 + PHY (1) |
| Voltage - I/O | 1.8V, 3.3V | 1.8V, 3.3V |
| Operating Temperature | -40°C ~ 90°C (TJ) | -40°C ~ 90°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 176-LQFP Exposed Pad | 176-LQFP Exposed Pad |
| Supplier Device Package | 176-HLQFP (24x24) | 176-HLQFP (24x24) |
| Additional Interfaces | I2C, McASP, SPI, MMC/SD, UART | I2C, McASP, SPI, MMC/SD, UART |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 4 (72 Hours) | 4 (72 Hours) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | 3A991A2 | 3A991A2 |
| HTSUS | 8542.31.0001 | 8542.31.0001 |
Engineering Selection Recommendations
The AM1705DPTPD4 is the direct substitute for the obsolete AM1705BPTPD4. Both parts are manufactured by Texas Instruments and share identical electrical, mechanical, and functional specifications across all critical parameters.
The primary distinction is product status: AM1705BPTPD4 is classified as Obsolete, while AM1705DPTPD4 maintains Active status with significantly higher inventory availability (34,106 units versus 1,030 units). Both parts maintain full ROHS3 compliance, REACH unaffected status, and identical export classification codes (ECCN 3A991A2; HTSUS 8542.31.0001).
For new designs, ongoing production, or system maintenance, the AM1705DPTPD4 is the recommended selection due to its active product status and assured long-term supply chain availability.
Frequently Asked Questions (FAQ)
Q: Are AM1705BPTPD4 and AM1705DPTPD4 pin-compatible?
A: Yes. Both parts use the 176-HLQFP (24x24) package with identical pinout, footprint, and exposed pad configuration. No PCB redesign is required for substitution.
Q: What is the difference between these two part numbers?
A: The parts are functionally and electrically identical. The difference lies in product lifecycle status: AM1705BPTPD4 is Obsolete, while AM1705DPTPD4 is Active. The suffix letter (B versus D) indicates the product status designation from Texas Instruments.
Q: Can I use AM1705DPTPD4 as a direct replacement in existing designs?
A: Yes. The AM1705DPTPD4 is a direct substitute with no design modifications required. All electrical specifications, operating parameters, interface protocols, and compliance certifications are identical.
Q: Are there any thermal or reliability differences?
A: No. Both parts operate across the identical temperature range (-40°C to 90°C junction temperature) and maintain the same MSL 4 moisture sensitivity rating (72 hours). Thermal and reliability characteristics are equivalent.
Q: What is the inventory status for each part?
A: AM1705BPTPD4 has 1,030 units in stock (Obsolete status). AM1705DPTPD4 has 34,106 units in stock (Active status), providing significantly greater supply chain security for ongoing production requirements.
Q: Do both parts meet the same compliance standards?
A: Yes. Both AM1705BPTPD4 and AM1705DPTPD4 are ROHS3 compliant, REACH unaffected, and carry identical export classification (ECCN 3A991A2; HTSUS 8542.31.0001).
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