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

TD 2

7 ST

¯¯

TOL 3

6 RESET

¯¯¯¯¯¯

GND 4

5 RESET

CAT

SOIC 16 Lead

NC 1

16 NC

PBRST

¯¯¯¯¯¯ 2

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:

3

6

TOL

point tolerance. CAT1832 TOL selects 10% (TOL = GND) or 20%

4

8

GND

Ground

5

9

RESET

Active HIGH reset output. RESET is active

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

Power Supply

1, 3. 5, 7, 10,

12, 14, 16

NC

No internal connection

Parameters

Ratings

Units

-0.5 to 7.0

V

Voltage on ST

V

Voltage on PBRST

¯¯¯¯¯¯,

RESET

¯¯¯¯¯¯and RESET

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.