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SN74HCT245 Datasheet Preview

SN74HCT245 Datasheet

Octal Bus Transceiver

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SN54HCT245, SN74HCT245
SCLS020F – MARCH 1984 – REVISED AUGUST 2016
SNx4HCT245 Octal Bus Transceivers With 3-State Outputs
1 Features
1 Operating Voltage Range of 4.5 V to 5.5 V
• High-Current 3-State Outputs Drive Bus Lines
Directly or up To 15-LSTTL Loads
• Low Power Consumption, 80-µA Maximum ICC
• Typical tpd = 14 ns
• ±6-mA Output Drive at 5 V
• Low Input Current of 1 µA Maximum
• Inputs Are TTL-Voltage Compatible
2 Applications
• Factory Automation and Control
• Grid Infrastructure
• Electronic Point of Sale
• Multi-Function Printers
• Motor Drives
• Storage
• Telecom Infrastructure
3 Description
The SNx4HCT245 octal bus transceivers are
designed for asynchronous two-way communication
between data buses. The control-function
implementation minimizes external timing
requirements.
The SNx4HCT245 devices allow data transmission
from the A bus to the B bus or from the B bus to the
A bus, depending upon the logic level at the direction-
control (DIR) input. The output-enable (OE) input can
be used to disable the device so that the buses are
effectively isolated.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SN54HCT245J
CDIP (20)
24.20 mm × 6.92 mm
SN54HCT245FK LCCC (20)
8.89 mm × 8.89 mm
SN54HCT245W CFP (20)
13.09 mm × 6.92 mm
SN74HCT245DW SOIC (20)
12.80 mm × 7.50 mm
SN74HCT245N PDIP (20)
24.33 mm × 6.35 mm
SN74HCT245NS SOP (20)
12.60 mm × 5.30 mm
SN74HCT245PW TSSOP (20)
6.50 mm × 4.40 mm
SN74HCT245DB SSOP (20)
7.80 mm × 7.20 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Logic Diagram (Positive Logic)
DIR 1
19
OE
A1 2
18
B1
To Seven Other Channels
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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SN74HCT245 Datasheet Preview

SN74HCT245 Datasheet

Octal Bus Transceiver

No Preview Available !

SN54HCT245, SN74HCT245
SCLS020F – MARCH 1984 – REVISED AUGUST 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Switching Characteristics: CL = 50 pF ...................... 6
6.7 Switching Characteristics: CL = 150 pF .................... 7
6.8 Operating Characteristics.......................................... 7
6.9 Typical Characteristics .............................................. 7
7 Parameter Measurement Information .................. 8
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ......................................... 9
8.3 Feature Description................................................... 9
8.4 Device Functional Modes.......................................... 9
9 Application and Implementation ........................ 10
9.1 Application Information............................................ 10
9.2 Typical Application ................................................. 10
10 Power Supply Recommendations ..................... 12
11 Layout................................................................... 12
11.1 Layout Guidelines ................................................. 12
11.2 Layout Example .................................................... 12
12 Device and Documentation Support ................. 13
12.1 Documentation Support ........................................ 13
12.2 Related Links ........................................................ 13
12.3 Receiving Notification of Documentation Updates 13
12.4 Community Resource............................................ 13
12.5 Trademarks ........................................................... 13
12.6 Electrostatic Discharge Caution ............................ 13
12.7 Glossary ................................................................ 13
13 Mechanical, Packaging, and Orderable
Information ........................................................... 13
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (August 2003) to Revision F
Page
• Deleted Ordering Information, see POA at the end of the datasheet. ................................................................................... 1
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
• Updated values in the Thermal Information table................................................................................................................... 5
2
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Copyright © 1984–2016, Texas Instruments Incorporated
Product Folder Links: SN54HCT245 SN74HCT245


Part Number SN74HCT245
Description Octal Bus Transceiver
Maker etcTI
Total Page 3 Pages
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