LS7290 datasheet(3/9 Pages) LSI

3 / 9 page

7290-072011-3

ABSOLUTE MAXIMUM RATINGS:

PARAMETER

SYMBOL

VALUE

UNIT

DC Supply Voltage

VDD - VSS

Any Input Voltage

VIN

VSS – 0.3 to VDD + 0.3

Operating Temperature

-20 to +85

°C

Storage Temperature

TSTG

-85 to +150

°C

ELECTRICAL SPECIFICATIONS (-25

°C < TA < +85°C)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

CONDITIONS

Supply Voltage

VDD

3.0

5.5

Supply Current

IDD

2.0

Outputs floating, Inputs high

CLK frequency

8.0

MHz

Enable Propagation Delay

tepd

100

FRD/RVRS Setup Time

(before step pulse)

tds

μs

Step Pulse Width

SPW

1.0

μs

at fc = 8 MHz

Interstep Pulse Delay

ISD

μs

at fc = 8 MHz

Interstep Phase Blanking

IPB

1.25

5.0

μs

at fc = 8 MHz

Reset Pulse Width

RPW

1.0

μs

at fc = 8 MHz

Reset to Step Pulse Delay

trs

μs

Hi-Level Input Voltage

VIH

VDD = 5

± 0.25V

Low-Level Input Voltage

VIL

0.8

VDD = 5

± 0.25V

High-Level Input Current

Leakage Current

Low-Level Input Current

Leakage Current

Output Sink Current

-10

VO = 0.4V, VDD = 5V

-5

VO = 0.4V, VDD = 3.3V

Output Source Current

VO = 4V, VDD = 5V

2.5

VO = 2.5V, VDD = 3.3V

Comparator Offset Voltage

VOS

VREF = 1V

Input Reference Voltage

VREF

0.5

3.0

VDD = 5V

VREF

0.5

1.5

VDD = 3.3V

fc ~ 1/5RC

At VDD = 5V and R = 2.2 k

Ω, C = 12pF,

oscillator frequency is 8 MHz (typical).

FIGURE 3. RC OSCILLATOR FOR CLOCK GENERATOR

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