CAT811JTBI-T3 データシートの表示（PDF） - Catalyst Semiconductor => Onsemi

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CAT811JTBI-T3

4-Pin Microprocessor Power Supply Supervisors with Manual Reset

Catalyst Semiconductor => Onsemi 

CAT811, CAT812

PIN DESCRIPTION

Pin Number

CAT811 CAT812

1

1

Name

GND

2

—

R¯¯E¯S¯E¯T¯

—

2

RESET

3

3

¯M¯R¯

4

4

VCC

Description

Ground

Active LOW reset. R¯¯E¯S¯E¯T¯ is asserted if VCC falls below the reset threshold

and remains low for at least 140ms after VCC rises above the reset threshold.

Active HIGH reset. RESET is asserted if VCC falls below the reset threshold

and remains high for at least 140ms after VCC rises above the reset

threshold.

Manual Reset Input. A logic LOW on ¯M¯R¯ asserts RESET. RESET remains

active as long as ¯M¯R¯ is LOW and for 140ms after ¯M¯R¯ returns HIGH. The

active low input has an internal 20kΩ pull-up resistor. The input should be

left open if not used.

Power supply voltage that is monitored.

BLOCK DIAGRAM

MR

VCC

VCC

TOLERANCE

+

BIAS

–

RESET

&

DIGITAL

DELAY

VCC

RESET

VOLTAGE

REFERENCE

GND

CAT811

MR

VCC

VCC

TOLERANCE

+

BIAS

–

RESET

&

DIGITAL

DELAY

VCC

RESET

VOLTAGE

REFERENCE

GND

CAT812

Doc. No. MD-3005 Rev. S

2

© Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

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