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CD74HC4538QPWRQ1 датащи(PDF) 1 Page - Texas Instruments |
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CD74HC4538QPWRQ1 датащи(HTML) 1 Page - Texas Instruments |
1 / 16 page CD74HC4538-Q1 HIGH-SPEED CMOS LOGIC DUAL RETRIGGERABLE PRECISION MONOSTABLE MULTIVIBRATOR SCLS595A − NOVEMBER 2004 − REVISED APRIL 2008 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Qualified for Automotive Applications D Retriggerable/Resettable Capability D Trigger and Reset Propagation Delays Independent of RX, CX D Triggering From the Leading or Trailing Edge D Q and Q Buffered Outputs Available D Separate Resets D Wide Range of Output Pulse Widths D Schmitt-Trigger Input on A and B Inputs D Retrigger Time Is Independent of C X D Fanout (Over Temperature Range) − Standard Outputs ... 10 LSTTL Loads − Bus Driver Outputs ... 15 LSTTL Loads D Balanced Propagation Delay and Transition Times D Significant Power Reduction Compared to LSTTL Logic ICs D V CC Voltage = 2 V to 6 V D High Noise Immunity N IL or NIH = 30% of VCC, VCC = 5 V description/ordering information The CD74HC4538 is a dual retriggerable/resettable precision monostable multivibrator for fixed-voltage timing applications. An external resistor (RX) and 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 propagation delay from trigger input-to-output transition and the propagation delay from reset input-to-output transition are independent of RX and CX. Leading-edge triggering (A) and trailing-edge triggering (B) inputs are provided for triggering from either edge of the input pulse. An unused A input should be tied to GND and an unused B input should be tied to VCC. On power up, the IC is reset. Unused resets and sections must be terminated. In normal operation, the circuit retriggers on the application of each new trigger pulse. To operate in the nontriggerable mode, Q is connected to B when leading-edge triggering (A) is used, or Q is connected to A when trailing-edge triggering (B) is used. The period ( τ) can be calculated from τ = (0.7) RX, CX; RMIN is 5 kΩ. CMIN is 0 pF. ORDERING INFORMATION{ TA PACKAGE‡ ORDERABLE PART NUMBER TOP-SIDE MARKING 40 °Cto125°C SOIC − M Tape and reel CD74HC4538QM96Q1 HC4538M −40 °C to 125°C TSSOP − PW Tape and reel CD74HC4538QPWRQ1 HC4538M † For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at http://www.ti.com. ‡ Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging. Copyright 2008, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. M OR PW PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1CX 1RXCX 1R 1A 1B 1Q 1Q GND VCC 2CX 2RXCX 2R 2A 2B 2Q 2Q |
Аналогичный номер детали - CD74HC4538QPWRQ1 |
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Аналогичное описание - CD74HC4538QPWRQ1 |
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