전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

DM74LS191M Datasheet with Chat AI
  • AIauthorized

    Hello, Please ask a question about DM74LS191M Datasheet

  • # Example questions: ➢ What is the maximum permissible supply voltage for this device?
    ➢ What is the maximum clock frequency that can be supported with a 50pf load?
    ➢ What are the typical input current values for a high signal applied to the enable pin versus the others pin?

  • Part No.DM74LS191M
    ManufacturerFAIRCHILD
    Size72 Kbytes
    Pages6 pages
    DescriptionSynchronous 4-Bit Up/Down Counter with Mode Control
    Datasheet Summary with AI

    1. Device Overview:

    ️· Type: This document pertains to a Fairchild Semiconductor device, likely a counter/divider IC (based on terms like "clock frequency" and "pulse width").
    ️· Disclaimer: Fairchild Semiconductor does not assume responsibility for the use of the described circuitry; patent licenses are not implied, and the device specifications can change without notice.

    2. Electrical Characteristics (Absolute Maximum Ratings - implied, as no specific maximum voltage is given)

    ️· Supply Voltage (VCC): 4.75V to 5.25V
    ️· Free Air Operating Temperature: 0°C to 70°C

    3. DC Electrical Characteristics (Typical Values – assumed, as no specific test conditions are provided)

    Parameter Min Nom Max Units Notes
    Supply Voltage (VCC) 4.75 5 5.25 V
    HIGH Level Input Voltage 2 V
    LOW Level Input Voltage 0.8 V
    HIGH Level Output Current -0.4 A
    LOW Level Output Current 8 A
    Clock Frequency 0 20 MHz
    Pulse Width 25 ns Load condition
    Data Setup Time 20 ns
    Data Hold Time 0 ns
    Enable Time to Clock 30 ns

    4. AC Electrical Characteristics (Propagation Delays - typical values)

    Parameter From (Input) To (Output) Min Max Units Notes
    Maximum Clock Frequency N/A N/A 20 N/A MHz
    Propagation Delay Time N/A LOW-to-HIGH Level Output 33 43 ns Any Q
    Propagation Delay Time N/A HIGH-to-LOW Level Output 50 59 ns Any Q
    Propagation Delay Time N/A LOW-to-HIGH Level Output 22 26 ns Data to Any Q
    Propagation Delay Time N/A HIGH-to-LOW Level Output 50 62 ns Data to Any Q
    Propagation Delay Time N/A Clock to Ripple Clock 20 24 ns
    Propagation Delay Time N/A Clock to Ripple Clock 24 33 ns
    Propagation Delay Time N/A Clock to Any Q 24 29 ns
    Propagation Delay Time N/A Clock to Any Q 36 45 ns
    Propagation Delay Time N/A Clock to Max/Min 42 47 ns
    Propagation Delay Time N/A Clock to Max/Min 52 65 ns
    Propagation Delay Time N/A Up/Down to Ripple Clock 45 50 ns
    Propagation Delay Time N/A Up/Down to Ripple Clock 45 54 ns
    Propagation Delay Time N/A Down/Up to Max/Min 33 36 ns
    Propagation Delay Time N/A Down/Up to Max/Min 33 42 ns
    Propagation Delay Time N/A Enable to Ripple Clock 33 36 ns
    Propagation Delay Time N/A Enable to Ripple Clock 33 42 ns

    Important Notes and Assumptions:

    ️· Test Conditions: The document does not specify test conditions (voltage, temperature, load, etc.) for many of the electrical characteristics. This is crucial for accurate interpretation.
    ️· "Typical" Values: The propagation delay times listed are *typical* values, which means that actual values may vary.
    ️· Load Conditions: Some propagation delay times refer to "load conditions," but the specific load is not defined.
    ️· N/A: Indicates that a value isn't applicable or provided in the document.

    1. Device Overview:

    ️· Type: This document pertains to a Fairchild Semiconductor device, likely a counter/divider IC (based on terms like "clock frequency" and "pulse width").
    ️· Disclaimer: Fairchild Semiconductor does not assume responsibility for the use of the described circuitry; patent licenses are not implied, and the device specifications can change without notice.

    2. Electrical Characteristics (Absolute Maximum Ratings - implied, as no specific maximum voltage is given)

    ️· Supply Voltage (VCC): 4.75V to 5.25V
    ️· Free Air Operating Temperature: 0°C to 70°C

    3. DC Electrical Characteristics (Typical Values – assumed, as no specific test conditions are provided)

    Parameter Min Nom Max Units Notes
    Supply Voltage (VCC) 4.75 5 5.25 V
    HIGH Level Input Voltage 2 V
    LOW Level Input Voltage 0.8 V
    HIGH Level Output Current -0.4 A
    LOW Level Output Current 8 A
    Clock Frequency 0 20 MHz
    Pulse Width 25 ns Load condition
    Data Setup Time 20 ns
    Data Hold Time 0 ns
    Enable Time to Clock 30 ns

    4. AC Electrical Characteristics (Propagation Delays - typical values)

    Parameter From (Input) To (Output) Min Max Units Notes
    Maximum Clock Frequency N/A N/A 20 N/A MHz
    Propagation Delay Time N/A LOW-to-HIGH Level Output 33 43 ns Any Q
    Propagation Delay Time N/A HIGH-to-LOW Level Output 50 59 ns Any Q
    Propagation Delay Time N/A LOW-to-HIGH Level Output 22 26 ns Data to Any Q
    Propagation Delay Time N/A HIGH-to-LOW Level Output 50 62 ns Data to Any Q
    Propagation Delay Time N/A Clock to Ripple Clock 20 24 ns
    Propagation Delay Time N/A Clock to Ripple Clock 24 33 ns
    Propagation Delay Time N/A Clock to Any Q 24 29 ns
    Propagation Delay Time N/A Clock to Any Q 36 45 ns
    Propagation Delay Time N/A Clock to Max/Min 42 47 ns
    Propagation Delay Time N/A Clock to Max/Min 52 65 ns
    Propagation Delay Time N/A Up/Down to Ripple Clock 45 50 ns
    Propagation Delay Time N/A Up/Down to Ripple Clock 45 54 ns
    Propagation Delay Time N/A Down/Up to Max/Min 33 36 ns
    Propagation Delay Time N/A Down/Up to Max/Min 33 42 ns
    Propagation Delay Time N/A Enable to Ripple Clock 33 36 ns
    Propagation Delay Time N/A Enable to Ripple Clock 33 42 ns

    Important Notes and Assumptions:

    ️· Test Conditions: The document does not specify test conditions (voltage, temperature, load, etc.) for many of the electrical characteristics. This is crucial for accurate interpretation.
    ️· "Typical" Values: The propagation delay times listed are *typical* values, which means that actual values may vary.
    ️· Load Conditions: Some propagation delay times refer to "load conditions," but the specific load is not defined.
    ️· N/A: Indicates that a value isn't applicable or provided in the document.

    Part No.DM74LS191M
    ManufacturerFAIRCHILD
    Size72 Kbytes
    Pages6 pages
    DescriptionSynchronous 4-Bit Up/Down Counter with Mode Control
    ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

    Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크 투 데이터시트    |   링크교환   |   제조사별 검색
    All Rights Reserved©Alldatasheet.com


    Mirror Sites
    English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
    Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
    Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
    Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
    Family Site : ic2ic.com  |   icmetro.com