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SN74S244 Datasheet Preview

SN74S244 Datasheet

Octal Buffers and Line Drivers

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SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
SDLS144D – APRIL 1985 – REVISED OCTOBER 2016
SNx4LS24x, SNx4S24x Octal Buffers and Line Drivers With 3-State Outputs
1 Features
1 Inputs Tolerant Down to 2 V, Compatible With
3.3-V or 2.5-V Logic Inputs
• Maximum tpd of 15 ns at 5 V
• 3-State Outputs Drive Bus Lines or Buffer Memory
Address Registers
• PNP Inputs Reduce DC Loading
• Hysteresis at Inputs Improves Noise Margins
2 Applications
• Servers
• LED Displays
• Network Switches
• Telecom Infrastructure
• Motor Drivers
• I/O Expanders
3 Description
The SNx4LS24x, SNx4S24x octal buffers and line
drivers are designed specifically to improve both the
performance and density of three-state memory
address drivers, clock drivers, and bus-oriented
receivers and transmitters. The designer has a choice
of selected combinations of inverting and non-
inverting outputs, symmetrical, active-low output-
control (G) inputs, and complementary output-control
(G and G) inputs. These devices feature high fan-out,
improved fan-in, and 400-mV noise margin. The
SN74LS24x and SN74S24x devices can be used to
drive terminated lines down to 133 Ω.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SN54LS24x,
SN54S24x
CDIP (20) – J
CFP (20) – W
LCCC (20) – FK
24.20 mm × 6.92 mm
7.02 mm × 13.72 mm
8.89 mm × 8.89 mm
SN74LS240,
SN74LS244
SSOP (20) – DB 7.20 mm × 5.30 mm
SN74LS24x,
SN74S24x
SOIC (20) – DW 12.80 mm × 7.50 mm
PDIP (20) – N
24.33 mm × 6.35 mm
SN74LS24x
SOP (20) – NS 7.80 mm × 12.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Logic Diagram (Positive Logic)
µ/6240, µ6240
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

SN74S244 Datasheet Preview

SN74S244 Datasheet

Octal Buffers and Line Drivers

No Preview Available !

SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
SDLS144D – APRIL 1985 – REVISED OCTOBER 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 – SNx4LS24x.................... 5
6.6 Electrical Characteristics – SNx4S24x...................... 5
6.7 Switching Characteristics – SNx4LS24x................... 6
6.8 Switching Characteristics – SNx4S24x..................... 6
6.9 Typical Characteristics .............................................. 7
7 Parameter Measurement Information .................. 7
7.1 SN54LS24x and SN74LS24x Devices...................... 7
7.2 SN54S24x and SN74S24x Devices.......................... 9
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagrams ..................................... 11
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 12
9 Application and Implementation ........................ 14
9.1 Application Information............................................ 14
9.2 Typical Application .................................................. 14
9.3 System Examples ................................................... 15
10 Power Supply Recommendations ..................... 17
11 Layout................................................................... 17
11.1 Layout Guidelines ................................................. 17
11.2 Layout Example .................................................... 17
12 Device and Documentation Support ................. 18
12.1 Related Links ........................................................ 18
12.2 Receiving Notification of Documentation Updates 18
12.3 Community Resource............................................ 18
12.4 Trademarks ........................................................... 18
12.5 Electrostatic Discharge Caution ............................ 18
12.6 Glossary ................................................................ 18
13 Mechanical, Packaging, and Orderable
Information ........................................................... 19
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (May 2010) to Revision D
Page
• Added Applications section, 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 RθJA values in the Thermal Information table from 70 to 94.3 (DB), from 58 to 90.3 (DW), from 69 to 50.6
(N), and from 60 to 76.6 (NS)................................................................................................................................................. 5
2 Submit Documentation Feedback
Copyright © 1985–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS240 SN54LS241 SN54LS244 SN54S240 SN54S241 SN54S244 SN74LS240
SN74LS241 SN74LS244 SN74S240 SN74S241 SN74S244


Part Number SN74S244
Description Octal Buffers and Line Drivers
Maker etcTI
Total Page 30 Pages
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