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SP706CU-L Equivalent & Substitute Parts
Part Overview
The SP706CU-L is a single-channel power management supervisor IC manufactured by MaxLinear, Inc., designed for power-on reset and voltage monitoring applications. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. The SP706CU-L operates within a 0°C to 70°C temperature range and provides active-low reset output with a 140ms minimum reset timeout.
Substiute Parts
Key Parameters
| Parameter | SP706CU-L |
|---|---|
| Manufacturer | MaxLinear, Inc. |
| Category | Power Management (PMIC) |
| Type | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 |
| Voltage - Threshold | 4.4V |
| Reset | Active Low |
| Reset Timeout | 140ms Minimum |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Discontinued at DiGi Electronics |
Substitute Part Grouping Explanation
Substitution of the SP706CU-L is determined by the following critical parameters:
- Single-channel voltage monitoring at 4.4V threshold
- Active-low reset output configuration
- Reset timeout specification of 140ms minimum
- 8-pin surface mount package (8-TSSOP/8-MSOP form factor)
- Operating temperature range compatibility
- RoHS and MSL compliance for manufacturing requirements
Substitute parts must maintain identical voltage threshold (4.4V), reset polarity (active low), and package form factor. Reset timeout and output type variations are noted where they differ from the original specification. All substitute parts listed are from active product lines with current availability.
Parameter Comparison
| Parameter | SP706CU-L | DS1706EUA+ | DS1706EUA+T&R | MAX706CUA+ | MAX706CUA+T | MAX706EUA+ | MAX706EUA+T |
|---|---|---|---|---|---|---|---|
| Manufacturer | MaxLinear, Inc. | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Type | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Threshold | 4.4V | 4.4V | 4.4V | 4.4V | 4.4V | 4.4V | 4.4V |
| Output | — | Push-Pull, Totem Pole | Push-Pull, Totem Pole | Push-Pull, Totem Pole | Push-Pull, Totem Pole | Push-Pull, Totem Pole | Push-Pull, Totem Pole |
| Reset | Active Low | Active Low | Active Low | Active Low | Active Low | Active Low | Active Low |
| Reset Timeout | 140ms Minimum | 130ms Minimum | 130ms Minimum | 140ms Minimum | 140ms Minimum | 140ms Minimum | 140ms Minimum |
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Discontinued at DiGi Electronics | Active | Active | Active | Active | Active | Active |
| Packaging | — | Tube | Tape & Reel (TR) | Tube | Tape & Reel (TR) | Tube | Tape & Reel (TR) |
Engineering Selection Recommendations
All substitute parts maintain the critical 4.4V voltage threshold, active-low reset configuration, and 8-pin surface mount package required for direct replacement of the SP706CU-L. Selection among substitutes depends on application-specific requirements:
Temperature Range Considerations: The SP706CU-L operates within 0°C to 70°C. MAX706CUA+ and MAX706CUA+T maintain this identical range, making them the closest functional equivalents. DS1706EUA+ and MAX706EUA+ variants extend operation to -40°C to 85°C, suitable for applications requiring expanded temperature performance.
Reset Timeout: MAX706CUA+, MAX706CUA+T, MAX706EUA+, and MAX706EUA+T maintain the 140ms minimum reset timeout specification. DS1706EUA+ and DS1706EUA+T&R specify 130ms minimum, which is acceptable for most applications but represents a 10ms reduction from the original specification.
Compliance & Availability: All substitute parts are ROHS3 compliant with MSL 1 rating, meeting current manufacturing standards. All are currently active products with confirmed inventory availability.
Packaging Format: Tube packaging (standard) is available for MAX706CUA+, MAX706EUA+, and DS1706EUA+. Tape & Reel packaging is available for MAX706CUA+T, MAX706EUA+T, and DS1706EUA+T&R for high-volume production requirements.
Frequently Asked Questions (FAQ)
Q: Can DS1706EUA+ be used as a direct replacement for SP706CU-L?
A: DS1706EUA+ is functionally compatible with the SP706CU-L. Both maintain the 4.4V threshold, active-low reset, and 8-pin package. The DS1706EUA+ offers extended temperature range (-40°C to 85°C) and a 130ms reset timeout versus the SP706CU-L's 140ms specification. For applications operating within 0°C to 70°C, this represents a valid substitution.
Q: What is the difference between MAX706CUA+ and MAX706EUA+?
A: Both parts are functionally identical in voltage threshold (4.4V), reset polarity (active low), reset timeout (140ms), and package form factor (8-TSSOP/8-MSOP). The primary difference is operating temperature range: MAX706CUA+ operates 0°C to 70°C, while MAX706EUA+ operates -40°C to 85°C. Select based on your application's temperature requirements.
Q: Should I choose Tube or Tape & Reel packaging?
A: Tube packaging is standard for prototype and low-volume applications. Tape & Reel (TR) packaging is designed for automated assembly and high-volume production. Both formats contain identical components; selection depends on manufacturing process requirements.
Q: Are all substitute parts RoHS compliant?
A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and manufacturing standards.
Q: What is the significance of the reset timeout difference between SP706CU-L (140ms) and DS1706EUA+ (130ms)?
A: The reset timeout defines the minimum duration the reset output remains active after power supply stabilization. The 10ms difference between 140ms and 130ms is negligible for most applications. DS1706EUA+ meets the functional requirement of holding reset during power-up sequencing.
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