V

DD

Transient

Amplitude

Duration

V

IT-

tw

V

DD

RESET

1.1V

V

+V

IT

hys

-

td

ValidOutput

TLV810M, TLV810R

TLV810S, TLV810Z

SBVS158A

– APRIL 2011 – REVISED JUNE 2011

www.ti.com

APPLICATION INFORMATION

VDD TRANSIENT REJECTION

The TLV810 has built-in rejection of fast transients on the VDD pin. The rejection of transients depends on both

the duration and the amplitude of the transient. The amplitude of the transient is measured from the bottom of the

transient to the negative threshold voltage of the TLV810, as shown in Figure 7.

Figure 7. Voltage Transient Measurement

The TLV810 does not respond to transients that are fast duration/low amplitude or long duration/small amplitude.

Figure 5 shows the relationship between the transient amplitude and the duration needed to trigger a reset. Any

combination of duration and amplitude above the curve generates a reset signal.

RESET DURING POWER UP/DOWN

The TLV810 output is valid when VDD is greater than 1.1 V. When VDD is less than 1.1 V, the output is undefined.

Figure 8 shows a typical waveform for the power-up sequence.

Figure 8. Power-Up Response

6

Copyright

© 2011, Texas Instruments Incorporated