IMP1232 IMP Inc, IMP1232 Datasheet - Page 3

• Manufacturer Part Number: IMP1232
• Description: 5V P Power Suppl er Supply Monit y Monitor and or and Reset Cir eset Circuit
• Manufacturer: IMP Inc

Voltage on V
Voltage on ST, TD . . . . . . . . . . . . . . . . . . . . . –0.5V to V
Voltage on PBRST, RESET, RESET . . . . . . . . –0.5V to V
Operating Temperature Range . . . . . . . . . . . –40 C to 85 C
Voltages measured with respect to ground.
These are stress ratings only and functional operation is not implied.
Unless otherwise stated, 4.5V
devices). All voltages are referenced to ground.
Notes: 1. PBRST is internally pulled HIGH to V
©
Supply Voltage (V
ST and PBRST Input High Level
ST and PBRST Input Low Level
V
V
Watchdog Time-Out Period
Watchdog Time-Out Period
Watchdog Time-Out Period
Output Voltage
Output Current
Output Current
Input Leakage
RESET Low Level
Internal Pull-Up Resistor
Operating Current (CMOS)
Input Capacitance
Output Capacitance
PBRST Manual Reset
Minimum Low Time
Reset Active Time
ST Pulse Width
V
RESET or RESET
V
PBRST Stable LOW to
RESET and RESET Active
V
RESET Inactive
V
1999 IMP, Inc.
CC
CC
CC
CC
CC
CC
Slew Rate
Fail Detect to
Detect to RESET or
Slew Rate
Trip Point (TOL = GND)
Trip Point (TOL = V
2. RESET is an open drain output.
3. RESET remains within 0.5V of V
4. Must not exceed the minimum watchdog time-out period (t
until V
strobed.
CC
. . . . . . . . . . . . . . . . . . . . . . . . –0.5V to 7V
CC
CC
falls below 2.0V.
)
CC
)
V
CC
5.5V and over the operating temperature range of 0 C to +70 C (–40 C to +85 C for N/EMA
V
V
C
t
V
V
I
t
t
t
V
PDLY
I
C
V
V
CCTP
CCTP
t
t
t
I
t
t
RPD
RPU
CC1
RST
OH
I
OUT
t
TD
TD
TD
OL
PB
ST
t
CC
CC
OH
IL
OL
F
R
IH
IN
IL
on power-down until V
(N/EMA version)
0 C to 70 C
CC
through a nominal 40k resistor.
TD = GND
TD = V
TD floating
I = –500 A, Note 3
Output = 2.4V , Note 2
Output = 0.4V,
Note 1
Note 1
PBRST = V
Note 4
4.75V to 4.25V
t
4.25V to 4.75V
RISE
408-432-9100/www.impweb.com
CC
CC
= 5 s
CC
+ 0.5V
+ 0.5V
IL
TD
CC
). The watchdog circuit cannot be disabled. To avoid a reset, ST must be
falls below 2V. RESET remains within 0.5V of ground on power-down
Soldering Temperature . . . . . . . . . . . . . . . . . . 260 C for 10 seconds
Storage Temperature . . . . . . . . . . . . . . . . . . . –55 C to 125 C
V
CC
– 0.3
4.50
4.25
62.5
–1.0
500
250
250
300
250
4.5
– 8
10
20
20
- 0.5V
2
0
Absolute Maximum Ratings
V
Electrical Characteristics
CC
IMP1
IMP1
1200
4.62
4.37
150
610
–10
610
610
40
- 0.1V
5
232LP/LPS
232LP/LPS
V
CC
2000
1000
1000
1000
4.74
4.49
250
5.5
0.8
1.0
0.4
30
10
20
+ 0.3V
5
8
mA
mA
ms
ms
ms
ms
ms
ms
ms
k
pF
pF
ns
ns
V
V
V
V
V
V
V
A
A
s
s
3