Micrel, Inc.

MIC705/706/707/708

Ordering Information

Part Number

Threshold (V)

/RESET

RESET

WDI

Junction Temperature Range

Package

MIC705MY

4.65

√

√

−40°C to +85°C

8-Pin SOIC

MIC706MY

4.40

√

√

−40°C to +85°C

8-Pin SOIC

MIC707MY

4.65

√

√

−40°C to +85°C

8-Pin SOIC

MIC708MY

4.40

√

√

−40°C to +85°C

8-Pin SOIC

Pin Configuration

MIC705/706

8-Pin SOIC (M)

(Top View)

MIC707/708

8-Pin SOIC (M)

(Top View)

Pin Description

Pin Number

MIC706

Pin Number

MIC708

Pin Name

Pin Name

1

1

/MR

Manual reset input forces /RESET to assert when pulled below 0.8V. An internal

pull-up current of 250µA on this input forces it high when left floating. This input

can also be driven from TTL or CMOS logic.

2

2

VCC

Primary supply input, +5V.

3

3

GND

IC ground pin, 0V reference.

4

4

PFI

Power-Fail Input: Internally-connected to the power-fail comparator which is

referenced to 1.25V. The power-fail output (/PFO) remains high if PFI is above

1.25V. PFI should be connected to GND or VCC if the power-fail comparator is not

used.

5

5

/PFO

Power-Fail Output: The power-fail comparator is independent of all other function

on this device.

6

N/A

WDI

Watchdog Input. The WDI input monitors microprocessor activity; an internal

watchdog timer resets itself with each transition on the watchdog input. If the WDI

pin is held high or low for longer than the watchdog timeout period, /WDO is forced

to active low. The watchdog function can be disabled by floating the WDI pin.

N/A

6

N/C

Not internally connected.

September 15, 2014

2

Revision 2.1