LTC1232IS8 Linear Technology, LTC1232IS8 Datasheet - Page 5

• Manufacturer Part Number: LTC1232IS8
• Description: IC MPU SUPERVISORY CIRCUIT 8SOIC
• Manufacturer: Linear Technology
• Type: Simple Reset/Power-On Resetr

Specifications of LTC1232IS8

• Number Of Voltages Monitored: 1
• Output: Open Drain, Open Drain
• Reset: Active High/Active Low
• Reset Timeout: 250 ms Minimum
• Voltage - Threshold: 4.37V, 4.62V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

V
with a 0.1µF capacitor.
GND: Ground Pin.
PB RST: Logic Input to be Directly Connected to a Push-
Button. The PB RST input requires an active low signal
which is debounced and timed for a minimum of 40ms.
When this condition is satisfied, the reset pulse generator
forces the reset outputs to active states. The reset outputs
remain in active states for a minimum of 250ms after
PB RST is released from logic low level.
TYPICAL PERFOR A CE CHARACTERISTICS
PI FU CTIO S
CC
U
4.63
4.62
4.60
4.59
4.58
4.57
4.61
: 5V Supply Input. The V
–50
V
CC
TOL = GND
–25
696
672
552
648
624
600
576
U
Trip Point vs Temperature
–50
Time-Out Period vs Temperature
V
TD = NO CONNECTION
0
CC
TEMPERATURE (˚C)
–25
= 5V
25
U
0
TEMPERATURE (˚C)
50
25
75
W
50
CC
LTC1232 • TPC01
100
pin should be bypassed
U
75
125
LTC1232 • TPC04
100
125
4.38
4.37
4.35
4.34
4.32
4.36
4.33
–50
V
TOL = V
CC
–25
Trip Point vs Temperature
CC
0
TEMPERATURE (˚C)
25
TOL: Input to Select 5% or 10% Variation on V
TOL is connected to GND, the reset pulse generator forces
the reset outputs to active states as V
(4.62V typical). When TOL is connected to V
pulse generator forces the reset outputs to active states as
V
TD: Time-Out Delay. TD is a three-level input to select three
different time-out periods. The time-out period is set by
the TD input to be 150ms with TD connected to GND,
600ms with TD left floating, and 1.2 seconds with TD
connected to V
CC
50
falls below 4.5V (4.37V typical).
75
LTC1232 • TPC02
100
5
4
1
3
2
0
0
RST Output Voltage vs Supply Voltage
T
EXTERNAL PULL-UP = 10µA
125
CC
A
= 25°C
.
1
SUPPLY VOLTAGE (V)
552
696
672
648
624
600
576
2
–50
Reset Active Time vs Temperature
V
CC
–25
= 5V
3
0
TEMPERATURE (˚C)
LTC1232 • TPC05
4
CC
25
falls below 4.75V
LTC1232
50
5
CC
, the reset
75
CC
sn1232 1232fas
. When
LTC1232 • TPC03
100
5
125