HEF4528BF datasheet(5/8 Pages) PHILIPS

5 / 8 page

January 1995

Philips Semiconductors

Product speciﬁcation

Dual monostable multivibrator

HEF4528B

MSI

AC CHARACTERISTICS

VSS = 0 V; Tamb =25 °C; input transition times ≤ 20 ns; Rt =5kΩ;Ct =15pF

AC CHARACTERISTICS

VSS =0V; Tamb =25 °C; CL = 50 pF; input transition times ≤ 20 ns; see also waveforms Fig.5.

VDD

TYPICAL FORMULA FOR P (

µW)

Dynamic power

4000 fi +∑ (foCL) × VDD2

where

dissipation per

20 000 fi +∑ (foCL) × VDD2

fi = input freq. (MHz)

package (P)

59 000 fi +∑ (foCL) × VDD2

fo = output freq. (MHz)

CL = load capacitance (pF)

∑ (f

oCL) = sum of outputs

VDD = supply voltage (V)

VDD

SYMBOL

MIN.

TYP.

MAX.

Recovery time

−75

for CD

tRCD

−30

−25

Minimum I0

550

pulse width; LOW

tWI0L

Minimum I1

550

pulse width; HIGH

tWI1H

Minimum CD

560

pulse width; LOW

tWCDL

Set-up time

−105

to avoid change

in output

CD → I0 or I1

tsu

−40

−25

Output O pulse

−

235

note 1

width; HIGH

tWOH

−

155

−

140

Output O pulse

−

5,45

µs

note 2

width; HIGH

tWOH

−

4,95

µs

−

4,85

µs

Change in output O

−±3%

note 3

pulse width over

∆t

−±2%

temperature

−±2%

Change in output O

−±2%

VDD ± 5%

pulse width over

∆tWO

−±1%

VDD

−±1%

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