Low-voltage supervisor with adjustable-reset time delay and manual reset

The TLV840 family of voltage supervisors or reset

ICs can operate at high voltage levels while maintaining very low

quiescent current across the whole VDD and temperature range. TLV840

offers best combination of low power consumption, high accuracy and

low propagation delay (tpHL= 30 µs typical).

Reset output signal is asserted when the voltage

at VDD drops below the negative voltage threshold (VIT-).

Reset signal is cleared when VDD rise above VIT- plus

hysteresis (VHYS) and the reset time delay

(tD) expires. Reset time delay can be programmed by

connecting a capacitor between the CT pin and ground for TLV840C and

TLV840M. For a minimum reset delay time the CT pin can be left

floating. TLV840N does not offer a programmable delay and offers

fixed reset delay timing options: 40 µs, 2 ms, 10 ms, 30 ms, 50 ms,

80 ms, 100 ms, 150 ms, 200 ms.

Additional features: Low power-on reset voltage

(VPOR), built-in glitch immunity protection for

VDD, built-in hysteresis, low open-drain output leakage current

(Ilkg(OD)). TLV840 is a perfect voltage

monitoring solution for industrial applications and battery-powered

/ low-power applications.