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HD74LV221ARPEL Datasheet

  • HD74LV221ARPEL

  • Dual Monostable Multivibrators

  • 14頁

  • RENESAS

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HD74LV221A
Dual Monostable Multivibrators
REJ03D0326鈥?600Z
(Previous ADE-205-271D (Z))
Rev.6.00
Jun. 23, 2004
Description
The HD74LV221A features output pulse-duration control by three methods. In the first method, the
A
input is low and
the B input goes high. In the second method, the B input is high and the
A
input goes low. In the third method, the
A
input is low, the B input is high, and the clear (CLR) input goes high.
The basic pulse duration is programmed by selecting external resistance and capacitance values. The external timing
capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected between
Rext/Cext and V
CC
.
To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and V
CC
. Pulse duration
can be reduced by taking
CLR
low.
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
V
CC
= 2.0 V to 5.5 V operation
All inputs V
IH
(Max.) = 5.5 V (@V
CC
= 0 V to 5.5 V)
All outputs V
O
(Max.) = 5.5 V (@V
CC
= 0 V)
Output current 鹵6 mA (@V
CC
= 3.0 V to 3.6 V), 鹵12 mA (@V
CC
= 4.5 V to 5.5 V)
Ordering Information
Package Type
SOP鈥?6 pin (JEITA)
SOP鈥?6 pin (JEDEC)
TSSOP鈥?6 pin
Package Code
FP鈥?6DAV
FP鈥?6DNV
TTP鈥?6DAV
Package
Abbreviation
FP
RP
T
Taping Abbreviation
(Quantity)
EL (2,000 pcs/reel)
EL (2,500 pcs/reel)
ELL (2,000 pcs/reel)
Part Name
HD74LV221AFPEL
HD74LV221ARPEL
HD74LV221ATELL
Note: Please consult the sales office for the above package availability.
Function Table
Inputs
CLR
L
X
X
H
H
鈫?/div>
Note: H:
L:
X:
鈫?
鈫?
A
X
H
X
L
鈫?/div>
L
High level
Low level
Immaterial
Low to high transition
High to low transition
: High level pulse
: Low level pulse
B
X
X
L
鈫?/div>
H
H
Outputs
Q
L
L
L
Q
H
H
H
Rev.6.00 Jun. 23, 2004 page 1 of 13

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