Product Overview
Maxim MAX691CPE Microprocessor Supervisor IC DIP-16
Condition
Used equipment pull. Evaluation: Visual inspection only. Function testing not performed. Markings legible: MAXIM MAX691CPE 9348N. Pins intact and clean.
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Product Overview
The Maxim MAX691CPE is a dedicated microprocessor supervisory circuit in a 16-pin dual in-line package (DIP-16). It integrates essential power-monitoring and system-protection functions into a single IC, including a 4.65V nominal reset threshold, battery-backup switchover logic, a watchdog timer, and chip-enable gating to protect CMOS RAM during supply transients.
Key Features
- Microprocessor supervisory IC in standard 16-pin plastic DIP
- 4.65V nominal reset threshold voltage
- Operating supply voltage range from 4.75V to 5.5V
- Automatic battery-backup power switching
- Integrated watchdog timer (100 ms, 1.6 s, or external capacitor adjustable)
- Chip-enable gating for SRAM write protection during brownouts
- Commercial operating temperature rating from 0°C to +70°C
Applications
- Replaces failed supervisory ICs on legacy 5V microcontroller boards and industrial controllers
- Provides power-loss protection and non-volatile SRAM backup in vintage computing restorations
- Supplies clean reset signaling and brownout protection for DIY 8-bit and 16-bit microprocessor breadboard builds
Frequently Asked Questions
What is the pin count and package style?
This is a 16-pin dual in-line package (DIP-16) with standard 0.300-inch row spacing, suitable for through-hole PCB mounting or socket insertion.
Has this specific IC been function-tested?
Visual inspection only. This part is a clean equipment pull with intact pins, but electronic bench testing has not been performed.
Why purchase an individual pull rather than a bulk surplus lot?
Getting a single verified part directly solves a repair without forcing you to buy surplus tubes or unknown multi-unit lots. Orders ship at an $8 flat rate, ship free once your order total reaches $28, and depart our Idaho warehouse the same or next business day.
Keeping vintage digital hardware running requires the right supervisor on duty, and this classic 16-pin DIP is ready for your next bench restoration.
