µP Supervisory Circuit
Preliminary
Absolute Maximum Ratings
Parameter
Terminal Voltage
Input Current
Symbol
V
CC
All other inputs
V
CC
GND All other inputs
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
Power Dissipation
T
A
Ratings
-0.3 to 7.0
-0.3 to (V
CC
+ 0.3)
250
25
-40 to +85
-65 to +150
300
700
Units
V
V
mA
mA
°C
°C
°C
mW
Stresses above those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent device failure. Functionality at
or above these limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability.
Operating ranges define those limits between which the functionality of the device is guaranteed.
Electrical Characteristics
V
CC
= 3 to 5.5V, T
A
= Operating Temperature Range, unless otherwise noted.
Parameter
Supply Voltage Range, V
CC
Supply Current, I
CC
ST and PBRST Input Levels
V
CC
= 5V (See Note 1)
V
CC
= 3.3V (See Note 1)
V
IH
, V
CC
> 2.7V
V
IH
, V
CC
< 2.7V
V
IL
Input Leakage PBRST, I
IL
Output Voltage, RST, RST
Output Voltage, RST, RST
Output Voltage, RST
V
CC
5% Trip Point (Reset Threshold Voltage)
V
CC
10% Trip Point (Reset Threshold Voltage)
Input Capacitance, ST, TOL
Output Capacitance, RST, RST
PBRST Min. Pulse Width, t
PB
PBRST Delay, t
PBD
Reset Active Time, t
RST
ST Pulse Width, t
ST
ST Timeout Period, t
TD
TD = 0V
TD = Open
TD = V
CC
V
CC
Fall Time, t
F
V
CC
Rise Time, t
R
V
CC
Detect to RST Low and RST High, tRPD
V
CC
Detect to RST Open and RST Low, tRPU
V
CC
Falling at 1.66 mV/µs
V
CC
Rising
250
(See Note 2)
I
SOURCE
= 350µA, V
CC
= 3.3V
I
SINK
= 10mA, V
CC
= 3.3V
I
SINK
= 50µA, V
CC
= 1.4V
TOL= GND
TOL= V
CC
C
IN
(See Note 3)
C
OUT
(See Note 3)
PBRST = V
IL
(See note 4)
20
1
250
20
62.5
250
500
40
0
5
610
8
1000
150
600
120
0
250
1000
2000
µs
ns
µs
ms
ms
4
610
20
1000
2.80
2.47
2.88
2.55
2.4
0.4
0.3
2.97
2.64
5
7
2.0
V
CC
–0.4
-0.3
18
15
Conditions
Min
Typ
Max
5.5
30
25
V
CC
+ 0.3
V
CC
+ 0.3
0.5
±1
µA
V
V
V
V
V
pF
pF
ms
ms
ms
ns
V
Units
V
µA
Note 1: I
CC
is measured with PBRST and all outputs open and inputs within 0.5V of supply rails.
Note 2: PBRST has an internal 40kΩ (typical) pull-up resistor to V
CC
.
Note 3: Guaranteed by design at T
A
= 25°C.
Note 4: PBRST must be held low for a minimum of 20ms to guarantee a reset.
Impala Linear Corporation
ILC1832 1.1
(408) 574-3939
www.impalalinear.com
October 1999
2
IMPALA [ Impala Linear Corporation ]
