HCF4538BEY 查看數據表（PDF） - STMicroelectronics

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HCF4538BEY

DUAL MONOSTABLE MULTIVIBRATOR

STMicroelectronics 

HCF4538B

DUAL MONOSTABLE MULTIVIBRATOR

s RETRIGGERABLE/RESETTABLE

CAPABILITY

s TRIGGER AND RESET PROPAGATION

DELAYS INDEPENDENT OF RX, CX

s TRIGGERING FROM LEADING OR

TRAILING EDGE

s Q AND Q BUFFERED OUTPUT AVAILABLE

s SEPARATE RESETS

s WIDE RANGE OF OUTPUT PULSE WIDTHS

s QUIESCENT CURRENT SPECIFIED UP TO

20V

s 5V, 10V AND 15V PARAMETRIC RATINGS

s SCHMITT TRIGGER INPUT ALLOWS

UNLIMITED RISE AND FALL TIMES ON +TR

AND -TR INPUTS

s INPUT LEAKAGE CURRENT

II = 100nA (MAX) AT VDD = 18V TA = 25°C

s 100% TESTED FOR QUIESCENT CURRENT

s MEETS ALL REQUIREMENTS OF JEDEC

JESD13B " STANDARD SPECIFICATIONS

FOR DESCRIPTION OF B SERIES CMOS

DEVICES"

DESCRIPTION

The HCF4538B is a monolithic integrated circuit

fabricated in Metal Oxide Semiconductor

technology available in DIP and SOP packages.

The HCF4538B dual precision monostable

multivibrator provides stable retriggerable/

resettable one-shot operation for any fixed voltage

PIN CONNECTION

DIP

SOP

ORDER CODES

PACKAGE

TUBE

DIP

SOP

HCF4538BEY

HCF4538BM1

T&R

HCF4538M013TR

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 transition (reset propagation delay) and the

time delay from reset input to output transition

(reset propagation delay) are independent of RX

and CX. Precision control of output pulse width is

achieved through linear CMOS techniques.

Leading edge triggering (+TR) and trailing edge

triggering (-TR) inputs are provided for triggering

September 2001

1/10

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