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SN74HCT244 Datasheet Preview

SN74HCT244 Datasheet

Octal Buffers and Line Driver

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SN54HCT244, SN74HCT244
SCLS175E – MONTH 2003 – REVISED AUGUST 2016
SNx4HCT244 Octal Buffers and Line Drivers With 3-State Outputs
1 Features
1 Operating Voltage Range of 4.5 V to 5.5 V
• High-Current Outputs Drive up to 15 LSTTL Loads
• Low Power Consumption: 80-µA Maximum ICC
• Typical tpd = 13 ns
• ±6-mA Output Drive at 5 V
• Low Input Current of 1 µA Maximum
• Inputs Are TTL-Voltage Compatible
• 3-State Outputs Drive Bus Lines and Buffer
Memory Address Registers
2 Applications
• Servers
• LED Displays
• Network Switches
• Telecom Infrastructure
• Motor Drivers
• I/O Expanders
3 Description
These octal buffers and line drivers are designed
specifically to improve both the performance and
density of 3-state memory address drivers,
clockdrivers, and bus-oriented receivers and
transmitters. The SNx4HCT244 devices are
organized as two 4-bit buffers or drivers with separate
output-enable (OE) inputs. When OE is low, the
device passes noninverted data from the A inputs to
the Y outputs. When OE is high, the outputs are in
the high-impedance state.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SN74HCT244DB SSOP (20)
7.20 mm × 5.30 mm
SN74HCT244DW SOIC (20)
12.80 mm × 7.50 mm
SN74HCT244N
PDIP (20)
24.33 mm × 6.35 mm
SN74HCT244NS SO (20)
12.60 mm × 5.30 mm
SN74HCT244PW TSSOP (20)
6.50 mm × 4.40 mm
SN54HCT244
CDIP (20)
LCCC (20)
24.20 mm × 6.92 mm
8.89 mm × 8.89 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
1
1OE
Logic Diagram (Positive Logic)
19
2OE
2
1A1
4
1A2
6
1A3
8
1A4
18
1Y1
16
1Y2
14
1Y3
12
1Y4
11
2A1
9
2Y1
13
2A2
7
2Y2
15
2A3
5
2Y3
17
2A4
3
2Y4
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.
On products compliant to MIL-PRF-38535, all parameters are
tested unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.




etcTI

SN74HCT244 Datasheet Preview

SN74HCT244 Datasheet

Octal Buffers and Line Driver

No Preview Available !

SN54HCT244, SN74HCT244
SCLS175E – MONTH 2003 – 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 .................... 6
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 ..................... 11
11 Layout................................................................... 11
11.1 Layout Guidelines ................................................. 11
11.2 Layout Example .................................................... 11
12 Device and Documentation Support ................. 12
12.1 Documentation Support ........................................ 12
12.2 Related Links ........................................................ 12
12.3 Receiving Notification of Documentation Updates 12
12.4 Community Resource............................................ 12
12.5 Trademarks ........................................................... 12
12.6 Electrostatic Discharge Caution ............................ 12
12.7 Glossary ................................................................ 12
13 Mechanical, Packaging, and Orderable
Information ........................................................... 12
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (August 2013) to Revision E
Page
• 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
• Deleted Ordering Information table; see POA at the end of the data sheet........................................................................... 1
• Changed Thermal Information table ....................................................................................................................................... 5
• Added ESD warning ............................................................................................................................................................... 9
2
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Copyright © 2003–2016, Texas Instruments Incorporated
Product Folder Links: SN54HCT244 SN74HCT244


Part Number SN74HCT244
Description Octal Buffers and Line Driver
Maker etcTI
Total Page 3 Pages
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