LTC1232 - Microprocessor Supervisory Circuit
Features
- Guaranteed Reset Assertion at Vcc=1V
- 8-Pin SOIC Plastic Package
- 2.0mA Maximum Supply Current
- 4.62V/4.37V Precision Voltage Monitor
- Power OK/Reset Time Delay: 600ms
- Minimum External Component Count
- Superior Upgrade for DS1232
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC™1232 provides power supply monitoring, watchdog timing and external reset for microprocessorsystems. A precise internal voltage reference and comparator circuit monitor the power supply line. When an out-of-tolerance condition occurs, the reset outputs are forced to active states. The RST output is guaranteed to remain logic low even with VCC as low as 1V.
The LTC1232 has an internal watchdog timer which forces the reset outputs to active states when the Strobe input is not forced low prior to a preset time-out period. The watchdog timing can be set to operate on time-out periods of typically 150ms, 600ms or 1.2 seconds.
The LTC1232 performs push-button reset control. The LTC1232 debounces the push-button input and guarantees an active reset pulse width of 250ms minimum.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC1232CN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LTC1232CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1232CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1232IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LTC1232IS8#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC1232CN8#PBF | N-8 | C | $2.15 | $1.75 | Yes | |
| LTC1232CS8#PBF | SO-8 | C | $2.40 | $1.90 | Yes | |
| LTC1232CS8#TRPBF | SO-8 | C | $1.96 | Yes | ||
| LTC1232IS8#PBF | SO-8 | I | $2.80 | $2.30 | Yes | |
| LTC1232IS8#TRPBF | SO-8 | I | $2.36 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC1232IS8#PBF | SO-8 | I | $2.80 | $2.30 | Yes | |
| LTC1232IS8#TRPBF | SO-8 | I | $2.36 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- Critical µP Power Monitoring
- Intelligent Instruments
- Computers and Controllers
- Automotive Systems
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Product Notifications
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LTC1232
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
