LS7211N 查看數據表（PDF） - LSI Corporation

零件编号

产品描述 (功能)

生产厂家

LS7211N

PROGRAMMABLE DIGITAL DELAY TIMER

LSI Corporation  

ELECTRICAL CHARACTERISTICS (Voltages referenced to Vss) (Con’t)

Characteristic

SYMBOL VDD

Min Max Min Max

Switching Characteristics (See Fig. 3)

3.0

-

1.8

-

1.4

RC Oscillator Frequency

fosc 10.0

-

4.5

-

3.4

18.0

-

8.0

-

4.0

3.0

-

2.6

-

2.0

External Clock or

fext 10.0

-

5.3

-

4.0

Crystal Oscillator

18.0 -

5.9

-

4.5

Frequency

3.0

-

7.2

-

5.5

fext 10.0

-

16.0

-

12.8

18.0

-

15.9

-

13.0

TRIG Set-Up Time

A, B Set-Up Time

WB0 - WB7 Set-Up Time

Clock to Out Delay

t1

-

39

-

50

-

t2

-

0

-

0

-

t3

-

0

-

0

-

3.0

-

284

-

375

t4

10.0

-

98

-

130

18.0

-

87

-

115

+V

A1

500k

+V

MODE

REG

B2

500k

EDGE

DETECT

TRIG 18

500k

LATCH

Min Max

-

1.05

-

2.6

-

3.0

-

1.52

-

3.0

-

3.5

-

4.2

-

9.7

-

9.1

66

-

0

-

0

-

-

495

-

172

-

152

CONTROL

LOGIC

Unit Condition

MHz

MHz

MHz

MHz

MHz

MHz

MHz

MHz

MHz

-

For prescale

factor S = 1 or 3,000

or 3,600

S = 32,768

or

32,768 x 60

ns -

ns -

ns -

ns

ns CL = 50pF

ns

BUF

9 OUT

RESET 7

CLOCK/RC/XTLI 4

XTLO (LS7212N) 5

500k

CLOCK

OSC

MUX

LATCH/TIMER

8

10-17 WB7-WB0

500k (8)

PRESCALER

RCS/CLKS (LS7211N) 5

500k

PSCLS 6

+V

1M

1M

3-STATE

DECODER

+V

-V (Gnd)

3 VDD

8 VSS

7211N-072009-4

FIGURE 2. LS7211N / LS7212N BLOCK DIAGRAM

Share Link: