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SN74LS90NSR - Texas Instruments

Description: Counter/Divider Single 4-Bit Decade UP 14-Pin SOP T/R

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SN74LS90NSR - Texas Instruments - PCB symbol
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PCB Footprints
SN74LS90NSR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - NS (R-PDSO-G14
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3D Models
SN74LS90NSR - Texas Instruments - 3D model - Small Outline Packages - NS (R-PDSO-G14
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SN74LS90NSR Details

  • Manufacturer Part Number:

    SN74LS90NSR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Package Description:

    SOP-14

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Date Of Intro:

    2018-09-28

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Additional Feature:

    ONE FUNCTION HAS 1 BIT

  • Count Direction:

    UP

  • Family:

    LS

  • JESD-30 Code:

    R-PDSO-G14

  • JESD-609 Code:

    e4

  • Length:

    10.2 mm

  • Load Capacitance (CL):

    15 pF

  • Load/Preset Input:

    NO

  • Logic IC Type:

    DECADE COUNTER

  • Max Frequency@Nom-Sup:

    32000000 Hz

  • Max I(ol):

    0.008 A

  • Mode of Operation:

    ASYNCHRONOUS

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    3

  • Number of Functions:

    2

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    70 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    15 mA

  • Prop. Delay@Nom-Sup:

    50 ns

  • Propagation Delay (tpd):

    50 ns

  • Seated Height-Max:

    2 mm

  • Supply Voltage-Max (Vsup):

    5.25 V

  • Supply Voltage-Min (Vsup):

    4.75 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    TTL

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    NICKEL PALLADIUM GOLD

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Trigger Type:

    NEGATIVE EDGE

  • Width:

    5.3 mm

  • fmax-Min:

    32 MHz

SN74LS90NSR Frequently Asked Questions (FAQs)

  • The maximum clock frequency of the SN74LS90NSR is typically around 2-3 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 clock 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 in parallel with the 0.1uF capacitor to filter out low-frequency noise.
  • The recommended operating temperature range for the SN74LS90NSR is 0°C to 70°C. However, the device can operate up to 85°C with reduced performance and reliability. It's essential to ensure that the device is operated within the recommended temperature range to maintain its performance and lifespan.
  • The asynchronous reset input (R) of the SN74LS90NSR should be connected to a pull-up resistor (typically 1kΩ to 10kΩ) to ensure that the device is properly reset. The reset input should be driven low to reset the device, and then released to allow the device to operate normally.
  • The maximum output current that the SN74LS90NSR can sink or source is typically around 16mA per output pin. However, it's recommended to limit the output current to 10mA or less to ensure reliable operation and prevent overheating.

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SN74LS90NSR 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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