74221 データシートの表示（PDF） - Philips Electronics

部品番号

コンポーネント説明

メーカー

74221

Dual Monostable Multivibrators (with Schmitt Trigger Input)

Philips Electronics 

Philips Semiconductors

Dual non-retriggerable monostable

multivibrator with reset

Product specification

74HC/HCT221

SYMBOL PARAMETER

tW

tW

tW

tW

trem

REXT

CEXT

output pulse width

nQ or nQ

output pulse width

nQ or nQ

output pulse width

nQ or nQ

pulse width match

between circuits

in the package

removal time

nRD to nA

or nB

external timing resistor

external timing capacitor

Tamb (°C)

74HC

UNIT

+25

−40 to +85 −40 to +125

min typ max. min max. min. max.

140

−

−

ns

1.5

−

−

µs

7

−

−

µs

±2

−

−

%

100 30

125

150

ns

20 11

25

30

17 9

21

26

10

1000 −

−

kΩ

2

1000 −

−

no limits

pF

TEST CONDITIONS

VCC WAVEFORMS

(V)

2.0 CEXT = 28 nF;

4.5 REXT = 2 kΩ;

6.0 Fig.10

2.0 CEXT = 1 nF;

4.5 REXT = 2 kΩ;

6.0 Fig.10

2.0 CEXT = 1 nF;

4.5 REXT = 10 kΩ;

6.0 Fig.10

4.5 CEXT = 1000 pF;

to REXT = 10 kΩ

5.5

2.0 Fig.9

4.5

6.0

2.0 Fig.12

5.0 Fig.13

2.0 Fig.12

5.0 Fig.13

December 1990

7

Share Link: