Part Image

SN74LS645-1NSR - Texas Instruments

Description: Octal bus transceivers

Download SN74LS645-1NSR Model
Schematic
symbols
Schematic symbol is unavailable for download
PCB
footprints
PCB footprint is unavailable for download
3D
models
3D model is unavailable for download
PCB Footprints
SN74LS645-1NSR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - NS (R-PDSO-G20)
click to zoom
3D Models
SN74LS645-1NSR - Texas Instruments  - 3D model - Small Outline Packages - NS (R-PDSO-G20)
click to zoom

SN74LS645-1NSR Details

  • Manufacturer Part Number:

    SN74LS645-1NSR

  • 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:

    LS

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    12.6 mm

  • Load Capacitance (CL):

    45 pF

  • Logic IC Type:

    BUS TRANSCEIVER

  • Max I(ol):

    0.024 A

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    8

  • Number of Functions:

    8

  • Number of Ports:

    2

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    70 °C

  • Output Characteristics:

    3-STATE

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP20,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    95 mA

  • Prop. Delay@Nom-Sup:

    15 ns

  • Propagation Delay (tpd):

    15 ns

  • Qualification Status:

    Not Qualified

  • Schmitt Trigger:

    NO

  • 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 (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    5.3 mm

SN74LS645-1NSR Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the SN74LS645-1NSR is 30 MHz, but it can vary depending on the system design and capacitive loading.
  • To ensure reliable operation in high-temperature environments, it is recommended to follow proper thermal management practices, such as providing adequate heat sinking and airflow, and ensuring that the device is operated within its specified temperature range of -40°C to 85°C.
  • The recommended power-on sequence for the SN74LS645-1NSR is to apply power to the VCC pin before applying any input signals, and to ensure that the power supply voltage is stable before enabling the device.
  • To handle bus contention when using the SN74LS645-1NSR, it is recommended to use a bus arbiter or a bus controller to manage access to the bus, and to ensure that only one device is driving the bus at a time.
  • The maximum capacitive load that the SN74LS645-1NSR can drive is 100 pF, but it can vary depending on the system design and operating frequency.

Trust Checks

This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored

SN74LS645-1NSR Overview

Use the download button to access the SN74LS645-1NSR schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like SN74L, or try a keyword search, such as Bus Driver/Transceivers

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.

Parts related to SN74LS645-1NSR

Showing 0 results

SN74LS645-1NSR Alternates

Showing results

Image Part Number Model
Part Image HD74LS645FP-E Renesas Electronics Corporation

Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20

Part Image HD74LS645FP Hitachi Ltd

Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20

Part Image SN74LS645NSRG4 Texas Instruments

Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20

Part Image SN74LS645-1NSRG4 Texas Instruments

Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20

Part Image HD74LS645FP Renesas Electronics Corporation

Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20

For a full list of alternate parts for SN74LS645-1NSR, check out Findchips.com