Ramp-Up

Time to Re-Ramp

Time

Ramp-Down

V

CC

Time

V

CC_GH

V

CC_GW

TCA8418

Table 1 specifies the performance of the power-on reset feature for TCA8418E for both types of power-on reset.

PARAMETER

MIN

TYP

MAX

UNIT

Fall rate

See Figure 1

1

100

ms

Rise rate

See Figure 1

0.01

100

ms

See Figure 1

0.001

ms

See Figure 2

0.001

ms

See Figure 3

1.2

V

Glitch width that will not cause a functional disruption when

See Figure 3

µs

0.767

1.144

V

1.033

1.428

V

(1)

Glitches in the power supply can also affect the power-on reset performance of this device. The glitch width

device impedance are factors that affect power-on reset performance. Figure 3 and Table 1 provide more

information on how to measure these specifications.

Figure 3. Glitch Width and Glitch Height

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