IW4518 datasheet(4/5 Pages) ETC

Part #	IW4518

Description	Dual Up-Counter

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IW4518B

166

AC ELECTRICAL CHARACTERISTICS(C

L=50pF, RL=200kΩ, Input tr=tf=20 ns)

VCC

Guaranteed Limit

Symbol

Parameter

V

≥-55°C25°C

≤125°C

Unit

fmax

Maximum Clock Frequency, (Figure 1)

5.0

10

15

1.5

3

4

1.5

3

4

0.75

1.5

2

MHz

tPHL, tPLH

Maximum Propagation Delay, Clock or Enable

to Output (Figures 1,3)

5.0

10

15

560

230

160

560

230

160

1120

460

320

ns

tPHL

Maximum Propagation Delay, Reset to Output

(Figure 2)

5.0

10

15

650

225

170

650

225

170

1300

450

340

ns

tTHL, tTLH

Maximum Output Transition Time, Any Output

(Figure 1)

5.0

10

15

200

100

80

200

100

80

400

200

160

ns

CIN

Maximum Input Capacitance

-

7.5

pF

TIMING REQUIREMENTS(C

L=50pF, RL=200 kΩ, Input tr=tf=20 ns)

VCC

Guaranteed Limit

Symbol

Parameter

V

≥-55°C25°C

≤125°C

Unit

tw

Minimum Pulse Width, Clock (Figure 1)

5.0

10

15

200

100

70

200

100

70

400

200

140

ns

tw

Minimum Pulse Width, Reset (Figure 2)

5.0

10

15

250

110

80

250

110

80

500

220

160

ns

tw

Minimum Pulse Width, Enable (Figure 3)

5.0

10

15

400

200

140

400

200

140

800

400

280

ns

tr, tf

Maximum Input Rise and Fall Times

(Figure 1)

5.0

10

15

5

15

5

15

5

µs

Figure 1. Switching Waveforms

Figure 2. Switching Waveforms

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