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STMicroelectronics - DUAL MONOSTABLE MULTIVIBRATOR

Numéro de référence HCC4538B
Description DUAL MONOSTABLE MULTIVIBRATOR
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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HCC4538B fiche technique
HCC4538B
HCF4538B
DUAL MONOSTABLE MULTIVIBRATOR
. RETRIGGERABLE/RESETTABLE
CAPABILITY
. TRIGGER AND RESET PROPAGATION DE-
LAYS INDEPENDENT OF RX, CX
. TRIGGERING FROM LEADING OR TRAILING
EDGE
. Q AND Q 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-
LIMITER RISE AND FALL TIMES ON + TR AND
– TR INPUTS
. INPUT CURRENT OF 100nA AT 18V AND 25°C
FOR HCC DEVICE
. 100% TESTED FOR QUIESCENT CURRENT
. MEETS ALL REQUIREMENTS OF JEDECTEN-
TATIVE STANDARD N° 13A, ”STANDARD SPE-
CIFICATIONS FOR DESCRIPTION OF ”B”
SERIES CMOS DEVICES”
EY
(Plastic Package)
F
(Ceramic Package)
M1
(Micro Package)
C1
(Chip Carrier)
ORDER CODES :
HCC4538BF
H CF 4538 BM 1
HCF4538BEY
H CF 4538 BC 1
DESCRIPTION
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
micro package. The HCC/HCF4538B dual precision
monostable multivibrator provides stable retrigger-
able/resettable one-shot operation for any fixed-
voltage timing application. An external resistor (RX)
and an external capacitor (CX) control the timing and
accuracy for the circuit. Adjustment of RX and CX
provides a wide range of output pulse widths from
the Q and Q terminals. The time delay from trigger
input to output transition (trigger propagation delay)
and the time delay from reset input to output transi-
tion (reset propagation delay) are independent of RX
and CX. Precision control of output pulse widths is
achieved through linear CMOS techniques. Lead-
ing-edge-triggering (+ TR) and trailing-edge-trigger-
ing (– TR) inputs are provided for triggering from
either edge of an input pulse. An unused + TR input
should be tied to VSS. An unused – TR input should
be tied to VDD. A RESET (on low level) is provided
for immediate termination of the output pulse or to
PIN CONNECTIONS
September 1988
1/14

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