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SN74LS290N - Texas Instruments

Description: Counter ICs Decade Counters 14-PDIP 0 to 70

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SN74LS290N - Texas Instruments - PCB symbol
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PCB Footprints
SN74LS290N - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - N (R-PDIP-T14)
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SN74LS290N - Texas Instruments - 3D model - Dual-In-Line Packages - N (R-PDIP-T14)
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SN74LS290N Details

  • Manufacturer Part Number:

    SN74LS290N

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    No

  • Rohs Code:

    No

  • Part Life Cycle Code:

    Obsolete

  • Package Description:

    DIP, DIP14,.3

  • Reach Compliance Code:

    Not Compliant

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Additional Feature:

    DIVIDE BY 2 AND DIVIDE BY 5 FUNCTIONS

  • Count Direction:

    UP

  • Family:

    LS

  • JESD-30 Code:

    R-PDIP-T14

  • Length:

    19.305 mm

  • Load Capacitance (CL):

    15 pF

  • Load/Preset Input:

    YES

  • Logic IC Type:

    DECADE COUNTER

  • Max Frequency@Nom-Sup:

    32000000 Hz

  • Max I(ol):

    0.016 A

  • Mode of Operation:

    ASYNCHRONOUS

  • Number of Bits:

    3

  • Number of Functions:

    2

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    70 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP14,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Peak Reflow Temperature (Cel):

    NOT SPECIFIED

  • Power Supply Current-Max (ICC):

    15 mA

  • Prop. Delay@Nom-Sup:

    35 ns

  • Propagation Delay (tpd):

    35 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Supply Voltage-Max (Vsup):

    5.25 V

  • Supply Voltage-Min (Vsup):

    4.75 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    NO

  • Technology:

    TTL

  • Temperature Grade:

    COMMERCIAL

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    NOT SPECIFIED

  • Trigger Type:

    NEGATIVE EDGE

  • Width:

    7.62 mm

  • fmax-Min:

    32 MHz

SN74LS290N Frequently Asked Questions (FAQs)

  • The maximum clock frequency of the SN74LS290N is typically around 20-25 MHz, but it can vary depending on the specific application and operating conditions. It's recommended to check the device's timing specifications and perform thorough testing to ensure reliable operation at the desired frequency.
  • To ensure proper power supply and decoupling, connect the VCC pin to a stable 5V power supply, and decouple the power supply lines with 0.1uF ceramic capacitors as close to the device as possible. Additionally, use a 10uF electrolytic capacitor to filter out any noise or ripple on the power supply lines.
  • The SN74LS290N can sink or source up to 16mA of current per output pin, but it's recommended to limit the current to 10mA or less to ensure reliable operation and prevent overheating.
  • The SN74LS290N is designed to operate at 5V, but it can be used in a 3.3V system with some limitations. The device's input voltage threshold will be higher than the 3.3V supply voltage, which may affect its performance and reliability. It's recommended to use a level translator or voltage regulator to ensure proper operation.
  • The asynchronous reset input (RST) on the SN74LS290N should be tied to a pull-up resistor (e.g., 1kΩ) and connected to a reset signal or a power-on reset circuit. This ensures that the device is properly reset during power-up or when the reset signal is asserted.

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SN74LS290N Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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SN74LS290N Alternates

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Part Image M38510/32003BCA SRI International Sarnoff

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Part Image DM74LS290N National Semiconductor Corporation

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Part Image 74LS290A Philips Semiconductors

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For a full list of alternate parts for SN74LS290N, check out Findchips.com