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SN74HCT645DWR - Texas Instruments

Description: Octal Bus Transceivers With 3-State Outputs

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SN74HCT645DWR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW (R-PDSO-G20)
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SN74HCT645DWR - Texas Instruments  - 3D model - Small Outline Packages - DW (R-PDSO-G20)
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SN74HCT645DWR Details

  • Manufacturer Part Number:

    SN74HCT645DWR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Additional Feature:

    WITH DIRECTION CONTROL

  • Control Type:

    COMMON CONTROL

  • Count Direction:

    BIDIRECTIONAL

  • Family:

    HCT

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    12.8 mm

  • Load Capacitance (CL):

    150 pF

  • Logic IC Type:

    BUS TRANSCEIVER

  • Max I(ol):

    0.006 A

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    8

  • Number of Functions:

    8

  • Number of Ports:

    2

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Characteristics:

    3-STATE

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP20,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    0.08 mA

  • Prop. Delay@Nom-Sup:

    25 ns

  • Propagation Delay (tpd):

    38 ns

  • Qualification Status:

    Not Qualified

  • Schmitt Trigger:

    NO

  • Seated Height-Max:

    2.65 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    7.5 mm

SN74HCT645DWR Frequently Asked Questions (FAQs)

  • The maximum power dissipation of the SN74HCT645DWR is 500 mW at an ambient temperature of 25°C. However, this value can be derated based on the operating temperature and other factors.
  • Unused inputs of the SN74HCT645DWR should be tied to VCC or GND to prevent them from floating and causing unwanted switching or power consumption. It's recommended to use a pull-up or pull-down resistor to ensure a stable logic level.
  • To minimize signal integrity issues and electromagnetic interference (EMI), it's recommended to follow good layout and routing practices, such as keeping signal traces short and away from power planes, using ground planes, and avoiding vias and tight bends.
  • Yes, the SN74HCT645DWR is compatible with 3.3V systems, but it's essential to ensure that the input signals are within the recommended voltage range (VCC - 0.5V to VCC + 0.5V) to prevent damage or malfunction.
  • To troubleshoot issues with the SN74HCT645DWR, start by verifying the power supply voltage, checking for proper signal connections, and ensuring that the device is not overheating. Use oscilloscopes or logic analyzers to debug signal issues, and consult the datasheet and application notes for guidance.

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SN74HCT645DWR 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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