P RODUCT DATABOOK 1 9 9 6 / 1 9 9 7
MC33164-3/ MC34164-3
3 V UNDERVOLTAGE
S
ENS I NG
CI RCUI T
P R O D U C T I O N D A T A S H E E T
C H A R A C T E R I S T I C C U R V E S
FIGURE 1. — INPUT VOLTAGE and RESET OUTPUT
VOLTAGE vs. TIME
FIGURE 2. — POWER-UP RESET VOLTAGE
2.0
10
7.5
5
R = 10kohms
R = 82k
L
L
1.8
T = 25°C
A
T = 25°C
A
1.6
1.4
1.2
1.0
2.5
0
V
IN
10
7.5
5
0.8
0.6
0.4
RESET
2.5
0
0.2
0
0
.2
.4
.6
.8 1.0 1.2 1.4 1.6 1.8 2.0
0
0.4
0.8
1.2
1.6
2.0
(t) Time - (ms)
(t) Time - (ms)
FIGURE 3. — POWER-DOWN RESET VOLTAGE
FIGURE 4. — RESET OUTPUT VOLTAGE vs. INPUT VOLTAGE
2.0
3.00
R = 10kohms
L
1.8
T = 25°C
A
2.50
1.6
1.4
1.2
1.0
R = 82k
L
T = 25°C
A
2.00
1.50
V
IN
0.8
0.6
1.00
0.4
0.50
0
RESET
0.2
0
0
0.4
0.8
1.2
1.6
2.0
2.63
2.65
2.67
2.69
2.71
2.73
(t) Time - (ms)
(V ) Input Voltage - (V)
IN
Copyright © 1999
Rev. 1.2 6/ 99
5
MICROSEMI [ Microsemi ]
