MAX6730 datasheet(3/15 Pages) MAXIM

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Single-/Dual-/Triple-Voltage µP Supervisory

Circuits with Independent Watchdog Output

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ELECTRICAL CHARACTERISTICS (continued)

(VCC1 = VCC2 = +0.8V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

T (falling)

3.000

3.075

3.150

S (falling)

2.850

2.925

3.000

R (falling)

2.550

2.625

2.700

Z (falling)

2.250

2.313

2.375

Y (falling)

2.125

2.188

2.250

W (falling)

1.620

1.665

1.710

V (falling)

1.530

1.575

1.620

I (falling)

1.350

1.388

1.425

H (falling)

1.275

1.313

1.350

G (falling)

1.080

1.110

1.140

F (falling)

1.020

1.050

1.080

E (falling)

0.810

0.833

0.855

VCC2 Reset Threshold

VTH2

D (falling)

0.765

0.788

0.810

Reset Threshold Tempco

ppm/

Reset Threshold Hysteresis

VHYST

Referenced to VTH typical

0.5

VCC_ to RST Output Delay

tRD

VCC1 = (VTH1 + 100mV) to

(VTH1 - 100mV) or

VCC2 = (VTH2 + 75mV) to

(VTH2 - 75mV)

µs

1.1

1.65

2.2

8.8

13.2

17.6

140

210

280

420

560

840

1120

Reset Timeout Period

tRP

1120

1680

2240

ADJUSTABLE RESET COMPARATOR INPUT (MAX6734/MAX6735)

RSTIN Input Threshold

VRSTIN

611

626.5

642

RSTIN Input Current

IRSTIN

-25

+25

RSTIN Hysteresis

3mV

RSTIN to Reset Output Delay

tRSTIND

VRSTIN to (VRSTIN - 30mV)

µs

MANUAL RESET INPUT (MAX6730/MAX6731/MAX6734/MAX6735)

VIL

0.3

× VCC1

MR Input Threshold

VIH

0.7

× VCC1

MR Minimum Pulse Width

µs

MR Glitch Rejection

100

MR to Reset Output Delay

tMR

200

MR Pullup Resistance

Ω

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