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CD4538 Arkusz danych(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numer części CD4538
Szczegółowy opis  Dual Precision Monostable
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Producent  NSC [National Semiconductor (TI)]
Strona internetowa  http://www.national.com
Logo NSC - National Semiconductor (TI)

CD4538 Arkusz danych(HTML) 1 Page - National Semiconductor (TI)

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TLF6000
February 1988
CD4538BMCD4538BC Dual Precision Monostable
General Description
The CD4538B is a dual precision monostable multivibrator
with independent trigger and reset controls The device is
retriggerable and resettable and the control inputs are inter-
nally latched Two trigger inputs are provided to allow either
rising or falling edge triggering The reset inputs are active
low and prevent triggering while active Precise control of
output pulse-width has been achieved using linear CMOS
techniques The pulse duration and accuracy are deter-
mined by external components RX and CX The device does
not allow the timing capacitor to discharge through the tim-
ing pin on power-down condition For this reason no exter-
nal protection resistor is required in series with the timing
pin Input protection from static discharge is provided on all
pins
Features
Y
Wide supply voltage range
30V to 15V
Y
High noise immunity
045 VCC (typ)
Y
Low power
Fan out of 2 driving 74L
TTL compatibility
or 1 driving 74LS
Y
New formula PWOUT e RC
(PW in seconds R in Ohms C in Farads)
Y
g
10% pulse-width variation from part to part (typ)
Y
Wide pulse-width range
1 msto %
Y
Separate latched reset inputs
Y
Symmetrical output sink and source capability
Y
Low standby current
5 nA (typ)
5VDC
Y
Pin compatible to CD4528B
Block and Connection Diagrams
TLF6000 – 1
RX and CX are External Components
VDD e Pin 16
VSS e Pin 8
Dual-In-Line Package
CD4538BM
CD4538BC
TLF6000 – 2
Top View
Order Number CD4538B
Truth Table
Inputs
Outputs
Clear
A
B
Q
Q
LX
X
L
H
XH
X
L
H
XX
L
L
H
HL
v
H
u
H
H
e
High Level
L
e
Low Level
u e Transition from Low to High
v e Transition from High to Low
e
One High Level Pulse
e
One Low Level Pulse
X
e
Irrelevant
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A


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