currents, holding

RESET low (Figure 4). The pull-down

resistor’s value is not critical; 100k

Ω is large enough not

to load

RESET and small enough to pull RESET to

ground. For applications where RESET must be valid to

Since the MAX6305/MAX6306/MAX6307 have open-

drain, active-low outputs, they typically use a pull-up

resistor. With these devices and under these conditions

active condition, but will drift toward a nonactive level

due to the pull-up resistor and the

RESET output’s

reduction in sinking capability. These devices are not

recommended for applications that require a valid

RESET output below 1V.

SUFFIX

00

Preprogrammed Threshold

Not Available

Preprogrammed

Threshold Not

Available

50

4.925

5.000

5.075

4.875

5.125

49

4.827

4.900

4.974

4.778

5.023

48

4.728

4.800

4.872

4.680

4.920

47

4.630

4.700

4.771

4.583

4.818

46

4.561

4.630

4.699

4.514

4.746

45

4.433

4.500

4.568

4.388

4.613

44

4.314

4.380

4.446

4.270

4.490

43

4.236

4.300

4.365

4.193

4.408

42

4.137

4.200

4.263

4.095

4.305

41

4.039

4.100

4.162

3.998

4.203

40

3.940

4.000

4.060

3.900

4.100

39

3.842

3.900

3.959

3.803

3.998

38

3.743

3.800

3.857

3.705

3.895

37

3.645

3.700

3.756

3.608

3.793

36

3.546

3.600

3.654

3.510

3.690

35

3.448

3.500

3.553

3.413

3.588

34

3.349

3.400

3.451

3.315

3.485

33

3.251

3.300

3.350

3.218

3.383

32

3.152

3.200

3.248

3.120

3.280

31

3.034

3.080

3.126

3.003

3.157

30

2.955

3.000

3.045

2.925

3.075

29

2.886

2.930

2.974

2.857

3.000

28

2.758

2.800

2.842

2.730

2.870

27

2.660

2.700

2.741

2.633

2.768

26

2.591

2.630

2.669

2.564

2.696

25

2.463

2.500

2.538

2.438

2.563

*

Factory-trimmed reset thresholds are available in approximately

100mV increments with a ±1.5% room-temperature variance.

MIN

TYP

MAX

MIN

MAX

5-Pin, Multiple-Input,

Programmable Reset ICs

8

MAX6308

MAX6309

MAX6310

GND

100k

RESET

MAX6311

MAX6312

MAX6313

GND

100k

RESET

Figure 4. Ensuring

Table 1. Factory-Trimmed Reset

Thresholds*