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HCF4538BM1

DUAL MONOSTABLE MULTIVIBRATOR,Monostable Multivibrator Dual Mono Multivibtr

Manufacturer : STMicroelectronics, Inc
Package/Case : SOP-16
Product Categories : Monostable Multivibrator
Datasheet: HCF4538BM1 Datasheet (PDF)
RoHs Status: Rohs
In-stock: 657

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HCF4538BM1 Product Details

. RETRIGGERABLE/RESETTABLE CAPABIITY
. TRIGGER AND RESET PROPAGATION DE-LAYS INDEPENDENT OF Rx, Cx
. TRIGGERING FROM LEADING OR TRAILING EDGE
. Q ANDQ BUFFERED OUTPUTS AVAILABLE D SEPARATE RESETS D WIDE RANGE OF OUTPUT-PULSE WIDTHS. QUIESCENT CURRENT SPECIFIED TO 20V FOR HCC DEVICE D5V,10V, AND 15V PARAMETRIC RATINGSD SCHMITT TRIGGER INPUT ALLOWS UN-LIMITER RISE AND FALL TIMES ON + TR AND -TR INPUTS
. INPUT CURRENT OF 100nA AT 18V AND 25℃
FOR HCC DEVICE

■100% TESTED FOR QUIESCENT CURRENT DMEETS ALL REQUIREMENTS OF JEDECTEN-TATIVE STANDARDN 13A,"STANDARD SPE-CIFICATIONS FOR DESCRIPTION OF "B"SERIES CMOS DEVICES"

DESCRIPTION

 The HCC4538B(extended temperature range) and HCF4538B(intemediate temperature range) are monolithic integrated circuit, available in 16-lead dual in-line plastic or-ceramic package and plastic micropackage. 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 ofoutput pulse widths fromthe 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 Rxand Cx. Precision control of output pulse widths is achieved through linear CMOS techniques. Lead-
ing-edge-triggering(+TR) and trailing-edge-tigger-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 shouldbe tied to VDp.A RESET(on low level) is provided for immediate termination of the output pulse prevent output pulses when power is turned on. 

An unused RESET input should be tied to VDD. However, if an entire section of the HCC/HCF4538B is not used, its inputs must be tied to either VDD or VSS (see table 1). In normal operation the circuit triggers (extends the output pulse one period) on the application ofeach new trigger pulse. Foroperation in the non-retriggerable mode, Q is connected to – TR when leading-edge triggering (+ TR) is used or Q is connected to + TR when trailingedge triggering (–TR) is used. The timeperiod (T) for this multivibrator can be calculated by : T = RX CX. The min. value of external resistance, RX, is 4KΩ. The max. and min.

values of external capacitance, CX, are 100µF and 5nF, respectively.

HCF4538BM1 Pinout
(Picture: Pinout)

HCF4538BM1 Block Diagram
(Picture: Diagram)

Technical Parameters

  • Elements per Chip
  • 2
  • Logic Family
  • 4000B
  • Logic Type
  • Monostable Multivibrator
  • Package / Case
  • SOP-16
  • Propagation Delay Time
  • 600 ns, 300 ns, 200 ns
  • High Level Output Current
  • - 2.8 mA
  • Low Level Output Current
  • 2.8 mA
  • Supply Voltage Max
  • 20 V
  • Supply Voltage Min
  • 3 V
  • Maximum Operating Temperature
  • + 125 C
  • Minimum Operating Temperature
  • - 55 C
  • Packaging
  • Tube
  • Mounting Style
  • SMD/SMT
  • Operating Supply Voltage
  • 3.3 V, 5 V, 9 V, 12 V
  • Factory Pack Quantity
  • 50

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STMicroelectronics, Inc

ST
ST Microelectronics is a global independent semiconductor company and a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications, and that designs, develops, manufactures and markets a broad spectrum of products....
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