MAX6687, MAX6688 Local/Remote Temperature Switches In A �MAX Package

The MAX6687 MAX6688 comprise a remote-junction temperature Switch and a local temperature Switch in a single package. The remote-junction Switch uses an external P-N junction (typically a diode-connected Transistor on the die of an external CPU, ASIC or FPGA) as a sensing element to measure the remote temperature. The remote-junction temperature Switch has a factory-programmed trip temperature threshold of either +120C or +125C. The local temperature Switch has a pin-programmable temperature threshold that is set by connecting pins S1 and S2 to ground, to VDD, or leaving them floating. Hysteresis for both local and remote thresholds is 5C. The MAX6687 MAX6688 do not assert on transient (single-sample) faults or when power is first applied.
The MAX6687 has two open-drain active-low outputs while the MAX6688 has two push-pull active-high outputs. TREMOTE asserts a Logic signal when the remote temperature exceeds the factory-programmed +120C or +125C trip threshold. TLOCAL is asserted when the die temperature exceeds the pin-programmed threshold, which is controlled by pins S1 and S2. The local thresholds are available in two ranges in 5C increments. The two ranges are +40C to +80C and +75C to +115C.
The MAX6687 MAX6688 operate from a 3.0V to 5.5V power supply and are available in a space-saving 8-pin MAX package.
By Maxim Integrated Products