IMP1 832
Absolute Maximum Ratings
Voltage on V
CC
. . . . . . . . . . . . . . . . . . . . . . . . –0.5V to 7V
Voltage on ST, TD . . . . . . . . . . . . . . . . . . . . . –0.5V to V
CC
+ 0.5V
Voltage on PBRST, RESET, RESET . . . . . . . . –0.5V to V
CC
+ 0.5V
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.
Soldering Temperature . . . . . . . . . . . . . . . . . . 260°C for 10 seconds
Storage Temperature . . . . . . . . . . . . . . . . . . . –55°C to 125°C
Electrical Characteristics
Unless otherwise stated, 1.2V
≤
V
CC
≤
5.5V and over the operating temperature range of –40°C to +85°C . All voltages are referenced
to ground.
Parameter
Supply Voltage (V
CC
)
ST and PBRST Input High Level
ST and PBRST Input High Level
ST and PBRST Input Low Level
V
CC
Trip Point (TOL = GND)
V
CC
Trip Point (TOL = V
CC
)
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
Input Capacitance
Output Capacitance
PBRST Manual Reset
Minimum Low Time
Reset Active Time
ST Pulse Width
V
CC
Fail Detect to
RESET or RESET
V
CC
Slew Rate
PBRST Stable LOW to
RESET and RESET Active
V
CC
Detect to RESET or
RESET Inactive
V
CC
Slew Rate
Symbol
V
CC
V
IH
V
IH
V
IL
V
CCTP
V
CCTP
t
TD
t
TD
t
TD
V
OH
I
OH
I
OL
I
IL
V
OL
Conditions
V
CC
≥
2.7V
V
CC
<
2.7V
Min
1.0
2
V
CC
- 0.4V
– 0.3
2.80
2.47
Typ
Max
5.5
V
CC
+ 0.3V
0.5
Units
V
V
V
V
V
V
ms
ms
ms
V
µA
mA
2.88
2.55
150
1200
610
V
CC
- 0.1V
350
2.97
2.64
250
2000
1000
TD = GND
TD = V
CC
TD floating
I = –500µA, V
CC
< 2.7V
Output = 2.4V, V
CC
≥
2.7V
Output = 0.4V, V
CC
≥
2.7V
62.5
500
250
V
CC
- 0.3V
10
–1.0
1.0
0.4
40
20
5
7
µA
V
kΩ
µA
pF
pF
ms
PBRST pin
I
CC1
C
IN
C
OUT
t
PB
t
RST
t
ST
t
RPD
t
F
t
PDLY
t
RPU
t
R
t
rise
= 5µs
250
0
Must not exceed t
RD
minimum.
Watchdog cannot be disabled.
Pulses < 2µs at V
CCTP
minimum will not cause reset.
20
PBRST = V
IL
20
250
20
Outputs open. V
CC
≤
3.6V
and all inputs at V
CC
or GND
610
1000
ms
ns
5
8
µs
µs
20
610
1000
ms
ms
ns
©
1999 IMP, Inc.
408-432-9100/www.impweb.com
3
IMP [ IMP, INC ]
