Processor Supervisor 2.93V/1.68V/1.25V 1.8V/3.3V/Adj 8-Pin CDIP

The TPS3307-18 is a micropower supply voltage supervisor designed for circuit initialization primarily in automotive DSP and processor-based systems, which require more than one supply voltage. The TPS3307-18 is designed for monitoring three independent supply voltages: 3.3 V/1.8 V/adj,. The adjustable SENSE input allows the monitoring of any supply voltage >1.25 V. The various supply voltage supervisors are designed to monitor the nominal supply voltage as shown in the following supply voltage monitoring table. During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors the SENSEn inputs and keeps RESET active as long as SENSEn remain below the threshold voltage VIT+. An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset. The delay time, td typ = 200 ms, starts after all SENSEn inputs have risen above the threshold voltage VIT+. When the voltage at any SENSE input drops below the threshold voltage VIT–, the RESET output becomes active (low) again. The TPS3307-18 incorporates a manual reset input, MR\. A low level at MR\ causes RESET to become active. In addition to the active-low RESET output, the TPS3307-18 includes an active-high RESET output.

Qualified for Military Applications

ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015;
Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)

Triple Supervisory Circuits for DSP and Processor-Based Systems

Power-On Reset Generator with Fixed Delay Time of 200 ms, No External
Capacitor Needed

Temperature-Compensated Voltage Reference

Maximum Supply Current of 40 µA

Supply Voltage Range . . . 2 V to 6 V

Defined RESET Output from V_DD = 1.1 V

CDIP-8 and LCCC-20 Packages

Temperature Range . . . .–55°C to 125deg;C