Overview
| Information | Low Power Microprocessor Supervisory with Battery Switch-Over |
|---|---|
| Package | SOIC-16, WSOIC-16 |
| Temperature Range (°C) | 0 to 70,-40 to 85 |
| # of Channels | 1 |
| VCC MIN (V) | 1 |
| VCC MAX (V) | 5.5 |
| Reset Threshold (V) | 4.65 |
| Reset Output | Active-low, Active-high |
| Output Driver Type | Push-pull |
| Reset Accuracy (mV) | 125 |
| Special Features | Watchdog Timer, Back-up Battery Switchover, Power Fail-Low Battery Indicator, Chip Enable Gating |
| Watchdog Timeout (s) | Adj |
| Reset Time Delay (ms) | Adj |
| IQ (µA) typ | 35 |
- Precision 4.65V/4.40V voltage monitoring
- 200ms or adjustable reset time
- 100ms, 1.6s or adjustable watchdog time
- 60µA maximum operating supply current
- 2.0µA maximum battery backup current
- 0.1µA maximum battery standby current
- Power switching
- 250mA output in Vcc mode (0.6Ω)
- 25mA output in battery mode (5Ω)
- On-board gating of chip-enable signals
- Memory write-cycle completion
- 6ns CE gate propagation delay
- Voltage monitor for power-fail or low battery
- Backup-battery monitor
- RESET valid to Vcc=1V
- Pin compatible upgrade to MAX691A / MAX693A
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | SP691A/693A/800L/800M Low Power Microprocessor Supervisory with Battery Switch-Over | 1.0.0 | December 2005 | 248.1 KB |
| Application Notes | AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian | April 2019 | 1.2 MB | |
| User Guides & Manuals | SP691A-693A Evaluation Board Manual | 3.0.0 | November 2007 | 54.1 KB |
| Product Brochures | Power Management Brochure | October 2020 | 2.4 MB | |
| Symbols & Footprints | SP691ACN-L & SP691ACN-L/TR CAD File (.bxl) | September 2018 | 90.9 KB | |
| Symbols & Footprints | SP691ACT-L/TR CAD File (.bxl) | September 2018 | 90.9 KB | |
| Symbols & Footprints | SP691AEN-L/TR CAD File (.bxl) | September 2018 | 90.9 KB |
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | Buy Now | Order Samples | PDN |
|---|---|---|---|---|---|---|---|---|
| SP691ACN | NSOIC16 | 0 | 70 | OBS | ||||
| SP691ACN/TR | NSOIC16 | 0 | 70 | OBS | ||||
| SP691ACN-L | NSOIC16 | 0 | 70 | Active | Order | |||
| SP691ACN-L/TR | NSOIC16 | 0 | 70 | OBS | SP691ACN-L | |||
| SP691ACP | PDIP16 | 0 | 70 | OBS | ||||
| SP691ACP-L | PDIP16 | 0 | 70 | OBS | SP691ACT-L | |||
| SP691ACT | WSOIC16 | 0 | 70 | OBS | ||||
| SP691ACT/TR | WSOIC16 | 0 | 70 | OBS | ||||
| SP691ACT-L | WSOIC16 | 0 | 70 | OBS | SP691ACT-L/TR | |||
| SP691ACT-L/TR | WSOIC16 | 0 | 70 | Active | Order | |||
| SP691AEN | NSOIC16 | -40 | 85 | OBS | ||||
| SP691AEN/TR | NSOIC16 | -40 | 85 | OBS | ||||
| SP691AEN-L | NSOIC16 | -40 | 85 | OBS | SP691AEN-L/TR | |||
| SP691AEN-L/TR | NSOIC16 | -40 | 85 | Active | Order | |||
| SP691AEP | PDIP16 | -40 | 85 | OBS | ||||
| SP691AEP-L | PDIP16 | -40 | 85 | OBS | SP691AET-L | |||
| SP691AET | WSOIC16 | -40 | 85 | OBS | ||||
| SP691AET/TR | WSOIC16 | -40 | 85 | OBS | ||||
| SP691AET-L | WSOIC16 | -40 | 85 | OBS | SP691AET-L/TR | |||
| SP691AET-L/TR | WSOIC16 | -40 | 85 | OBS | SP691ACN-L/TR | |||
| SP691AXN | NSOIC16 | -40 | 85 | OBS | ||||
| SP691AXN-1 | NSOIC16 | -40 | 85 | OBS | ||||
| SP691AXN-2 | NSOIC16 | -40 | 85 | OBS | ||||
| SP691AXP | PDIP16 | -40 | 85 | OBS | ||||
| SP691AXP-1 | PDIP16 | -40 | 85 | OBS | ||||
| SP691AXP-2 | PDIP16 | -40 | 85 | OBS | ||||
| SP691AXT | WSOIC16 | -40 | 85 | OBS | ||||
| SP691AXT-1 | WSOIC16 | -40 | 85 | OBS | ||||
| SP691AXT-2 | WSOIC16 | -40 | 85 | OBS |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Packaging
Notifications
FAQs & Support
Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
For ordering information and general customer service visit our Contact Us page.
Submit a Technical Support Question As a New Question
In this example, we looked for XRA1201. Click on part number header or on the link at the bottom of the result. This brings you to the product page. For example:
Click on Parts & Purchasing, highlighted with the blue arrow above. The screen changes to:
Notice the status column and the “Show obsolete parts” link. A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers, the legend still present:
Another method to find out if a part is OBS or EOL is to click on SUPPORT at the top:
And then Product Change Notifications:
Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:
If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.