SNOSDJ6A May 2025 – October 2025 TLV9020L , TLV9022L , TLV9030L , TLV9032L
PRODMIX
The TLV90xxL has a internal Power-on-Reset (POR) circuit for known start-up or power-down conditions. While the power supply (Vs) is ramping up or ramping down, the POR circuitry is activated for up to 60µs (over temperature) after the minimum supply voltage threshold of VPOR is crossed (typically 1.25V), or immediately when the supply voltage drops below VPOR. During the POR period, the input conditions are ignored. When the supply voltage is equal to or greater than the minimum supply voltage, and after the delay period, the comparator output reflects the state of the differential input ("L1" option), or initially in a latched condition ("L2" option).
The input levels must be settled before the end of the POR period to prevent premature latching. Attention must be payed to the time constants of any filtering or RC components on the inputs (references, dividers, bypass capacitors, and so forth).
The open drain and push-pull output types have different POR and latch behaviors. The next section explains these differences.