
HCC4538B
HCF4538B
September 1988
DUAL MONOSTABLE MULTIVIBRATOR
EY
(Plastic Package)
DESCRIPTION
ORDER CODES :
HCC4538BF
HCF4538BEY
HCF4538BM1
HCF4538BC1
F
(CeramicPackage)
M1
(MicroPackage)
C1
(Chip Carrier)
PIN CONNECTIONS
The
HCC4538B
(extended temperature range) and
HCF4538B
(intermediate temperature range) are
monolithic integrated circuit, available in 16-lead
dual in-line plastic or-ceramic package and plastic
micropackage.The
HCC/HCF4538B
dualprecision
monostable multivibrator provides stable retrigger-
able/resettable one-shot operation for any fixed-
voltage timing application. An external resistor (R
X
)
and anexternalcapacitor (C
X
) controlthetimingand
accuracy for the circuit. Adjustment of R
X
and C
X
provides a wide range of output pulse widths from
the Q and Q terminals. The timedelay from trigger
input to output transition (trigger propagation delay)
and the timedelay from reset input to output transi-
tion(resetpropagation delay)are independent ofR
X
and C
X
. Precision control of output pulse widths is
achieved through linear CMOS techniques. Lead-
ing-edge-triggering (+TR) andtrailing-edge-trigger-
ing (– TR) inputs are provided for triggering from
eitheredge of aninput pulse. Anunused + TRinput
shouldbe tied to V
SS
. An unused – TR input should
be tied to V
DD
. A RESET (on low level) is provided
for immediate termination of the output pulse or to
.
RETRIGGERABLE/RESETTABLE
CAPABILITY
.
TRIGGER AND RESET PROPAGATION DE-
LAYS INDEPENDENT OF R
X
, C
X
.
TRIGGERING FROM LEADING OR TRAILING
EDGE
.
Q ANDQ BUFFERED OUTPUTS AVAILABLE
.
SEPARATE RESETS
.
WIDE RANGE OF OUTPUT-PULSE WIDTHS
.
QUIESCENT CURRENT SPECIFIED TO 20V
FOR HCC DEVICE
.
5V, 10V, AND 15V PARAMETRIC RATINGS
.
SCHMITT TRIGGER INPUT ALLOWS UN-
LIMITERRISEANDFALL TIMES ON+ TR AND
– TR INPUTS
.
INPUT CURRENTOF100nA AT18V AND 25
°
C
FOR HCC DEVICE
.
100% TESTEDFOR QUIESCENTCURRENT
.
MEETSALLREQUIREMENTSOFJEDECTEN-
TATIVESTANDARDN
°
13A,”STANDARDSPE-
CIFICATIONS FOR DESCRIPTION OF ”B”
SERIESCMOS DEVICES”
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