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HCF4098BM1-HCF4098M013TR
DUAL MONOSTABLE MULTIVIBRATOR
1/10September 2001 RETRIGGERABLE/RESETTABLE
CAPABILITY TRIGGER AND RESET PROPAGATION
DELAYS INDEPENDENT OF RX, CX TRIGGERING FROM LEADING OR
TRAILING EDGE Q AND Q BUFFERED OUTPUT AVAILABLE SEPARATE RESETS WIDE RANGE OF OUTPUT PULSE WIDTHS QUIESCENT CURRENT SPECIFIED UP TO
20V 5V, 10V AND 15V PARAMETRIC RATINGS INPUT LEAKAGE CURRENT
II = 100nA (MAX) AT VDD = 18V TA = 25°C 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC
JESD13B " STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
DESCRIPTIONThe HCF4098B is a monolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
The HCF4098B dual precision monostable
multivibrator provides stable retriggerable/
resettable one-shot operation for any fixed voltage
timing application. An external resistor (RX ) and
an external capacitor (CX) control the timing 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 transition
(reset propagation delay) and the time delay from
reset input to output transition (reset propagation
delay) are independent of RX and CX . Leading
edge triggering (+TR) and trailing edge triggering
(-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
prevent output pulses when power is turned on.
HCF4098BDUAL MONOSTABLE MULTIVIBRATOR
PIN CONNECTION
ORDER CODES
HCF4098B2/10
An unused RESET input should be tied to VDD .
However, if an entire section of the HCF4098B is
not used, its reset should be tied to VSS (see table
1). In normal operation the circuit triggers (extends
the output pulse one period) on the application of
each new trigger pulse. For operation in the
non-retiggerable mode, Q is connected to -TR
when leading edge triggering (+TR) is used or Q is
connected to +TR when trailing edge triggering
(-TR) is used. The time period (T) for this
multivibrator can be calculated by : T = 1/2 RX CXfor CX > 0.01μF. The min. value of external
resistance, RX , is 5KΩ. The max. values of
external capacitance, CX, is 100 μF. The output
pulse width has variations of ±2.5% typically, over
the temperature range of -55 °C to 125 °C forX =1000pF and RX = 100KΩ . For power supply
variation of ±5% typically , for VDD = 10V and 15V
and ±1% typically for VDD = 5V at CX = 1000pF
and RX = 5KΩ .
IINPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
FUNCTIONAL DIAGRAM
HCF4098B3/10
TABLE 1 : Functional Terminal Connections A Retriggerable one-shot multivibrator has an output pulse width which is extended on full time period (T) after application of the last trigger
pulse.
A Non-Retriggerable one-shot multivibrator has a time period (T) referenced from the application of the firs trigger pulse.
LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values are referred to VSS pin voltage.
HCF4098B4/10
RECOMMENDED OPERATING CONDITIONS
DC SPECIFICATIONS The Noise Margin for both "1" and "0" level is: 1V min. with VDD=5V, 2V min. with VDD=10V, 2.5V min. with VDD=15V
HCF4098B5/10
DYNAMIC ELECTRICAL CHARACTERISTICS (T amb = 25°C, CL = 50pF, RL = 200KΩ, tr = tf = 20 ns)
(*) Typical temperature coefficient for all VDD value is 0.3 %/°C.
HCF4098B6/10
TEST CIRCUIT CL = 50pF or equivalent (includes jig and probe capacitance)
RL = 200KΩ
RT = ZOUT of pulse generator (typically 50Ω)
