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CAT1232 Datasheet(PDF) 2 Page - Catalyst Semiconductor

No. de Pieza. CAT1232
Descripción  5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets
Descarga  12 Pages
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Fabricante  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
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CAT1232 Datasheet(HTML) 2 Page - Catalyst Semiconductor

 
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CAT1232, CAT1832
Doc. No. MD-3018 Rev. D
2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
PIN CONFIGURATION
SOIC 8 Lead
MSOP 8 Lead
PDIP 8 Lead
PBRST
¯¯¯¯¯¯ 1
8 VCC
TD 2
7 ST
¯¯
TOL 3
6 RESET
¯¯¯¯¯¯
GND 4
5 RESET
CAT
SOIC 16 Lead
NC 1
16 NC
PBRST
¯¯¯¯¯¯ 2
15 VCC
NC 3
14 NC
TD 4
13 ST
¯¯
NC 5
12 NC
TOL 6
11 RESET
¯¯¯¯¯¯
NC 7
10 NC
GND 8
9
RESET
CAT
PIN DESCRIPTION
Pin Number
8-Lead
Package
Pin Number
16-Lead
Package
Name
Function
1
2
PBRST
¯¯¯¯¯¯
Debounced manual pushbutton reset input
2
4
TD
Watchdog typical time delay selection:
a) tTD = 150ms for TD = GND
b) tTD = 600ms for TD = Open
c) tTD = 1200ms for TD = VCC
3
6
TOL
CAT1232LP TOL selects 5% (TOL = GND) or 10% (TOL = VCC) trip
point tolerance. CAT1832 TOL selects 10% (TOL = GND) or 20%
TOL = VCC) trip point tolerance.
4
8
GND
Ground
5
9
RESET
Active HIGH reset output. RESET is active
1. If VCC falls below the reset voltage trip point
2. If PBRST
¯¯¯¯¯¯ is low
3. If ST
¯¯ is not strobed low before the timeout period set by TD expires.
4. During power-up.
6
11
RESET
Active LOW reset output. (See RESET)
7
13
ST
¯¯
Strobe Input
8
15
VCC
Power Supply
1, 3. 5, 7, 10,
12, 14, 16
NC
No internal connection
ABSOLUTE MAXIMUM RATINGS (*)
Parameters
Ratings
Units
Voltage on VCC
-0.5 to 7.0
V
Voltage on ST
¯¯ and TD -0.5 to VCC + 0.5
V
Voltage on PBRST
¯¯¯¯¯¯,
RESET
¯¯¯¯¯¯and RESET
-0.5 to VCC + 0.5
V
Parameters
Ratings
Units
Maximum Junction Temperature
125
ºC
Storage Temperature Range
-65 to +150
ºC
Lead Soldering Temperature (10s)
300
ºC
Operating Temperature Range
-40 to +85
ºC
Note:
*
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this
specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.


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