Bus Buffer. SN74LVC126A Datasheet

SN74LVC126A Buffer. Datasheet pdf. Equivalent


Part SN74LVC126A
Description Quadruple Bus Buffer
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SN74LVC126A
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SN74LVC126A
SCAS339S – MARCH 1994 – REVISED FEBRUARY 2017
SN74LVC126A Quadruple Bus Buffer Gate With 3-State Outputs
1 Features
1 Operates From 1.65 V to 3.6 V
• Specified From –40°C to +125°C
• Inputs Accept Voltages up to 5.5 V
• Maximum tpd of 4.7 ns at 3.3 V
• Typical VOLP (Output Ground Bounce),
<0.8 V at VCC = 3.3 V, TA = 25°C
• Typical VOHV (Output VOH Undershoot),
>2 V at VCC = 3.3 V, TA = 25°C
• Latch-Up Performance Exceeds 250 mA
Per JESD 17
2 Applications
• AV Receivers
• Audio Docks: Portable
• Blu-ray Players and Home Theaters
• MP3 Players or Recorders
• Personal Digital Assistants (PDAs)
• Power: Telecom, Server, and AC-DC Supplies
(Single-Controller, Analog, and Digital)
• Solid State Drives (SSDs): Client and Enterprise
• TVs: LCD, Digital, and High-Definition (HDTV)
• Tablets: Enterprise
• Video Analytics: Server
• Wireless Headsets, Keyboards, and Mice
3 Description
The SN74LVC126A device is a quadruple bus buffer
gate designed for 1.65-V to 3.6-V VCC operation.
The SN74LVC126A device features independent line
drivers with 3-state outputs. Each output is disabled
when the associated output-enable (OE) input is low.
To ensure the high-impedance state during power up
or power down, OE must be tied to GND through a
pulldown resistor; the minimum value of the resistor is
determined by the current-sourcing capability of the
driver.
Inputs can be driven from either 3.3-V or 5-V devices.
This feature allows the use of this device as a
translator in a mixed 3.3-V and 5-V system
environment.
Device Information(1)
PART NUMBER
PACKAGE BODY SIZE (NOM)
SN74LVC126A-DR
SOIC (14)
8.65 mm × 3.91 mm
SN74LVC126A-DBR SSOP (14)
6.20 mm × 5.30 mm
SN74LVC126A-DGVR TVSOP (14)
3.60 mm × 4.40 mm
SN74LVC126A-NSR SOP (14)
10.20 mm × 5.30 mm
SN74LVC126A-PWR TSSOP (14)
5.00 mm × 4.40 mm
SN74LVC126A-RGYR VQFN (14)
3.50 mm × 3.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
1
1OE
10
3OE
2
1A
3
1Y
9
3A
8
3Y
4
2OE
5
2A
6
2Y
13
4OE
12
4A
11
4Y
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.



SN74LVC126A
SN74LVC126A
SCAS339S – MARCH 1994 – REVISED FEBRUARY 2017
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 .......................................... 7
6.7 Typical Characteristics .............................................. 9
7 Parameter Measurement Information .................. 9
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description ................................................ 11
8.4 Device Functional Modes ....................................... 11
9 Application and Implementation ........................ 12
9.1 Application Information............................................ 12
9.2 Typical Application .................................................. 12
10 Power Supply Recommendations ..................... 13
11 Layout................................................................... 14
11.1 Layout Guidelines ................................................. 14
11.2 Layout Example .................................................... 14
12 Device and Documentation Support ................. 15
12.1 Documentation Support ........................................ 15
12.2 Receiving Notification of Documentation Updates 15
12.3 Community Resources.......................................... 15
12.4 Trademarks ........................................................... 15
12.5 Electrostatic Discharge Caution ............................ 15
12.6 Glossary ................................................................ 15
13 Mechanical, Packaging, and Orderable
Information ........................................................... 15
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision R (October 2016) to Revision S
Page
• Changed pin descriptions to match function in Pin Functions table....................................................................................... 3
Changes from Revision Q (July 2005) to Revision R
Page
• Added Applications section, ESD Ratings table, Thermal Information 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 temperature rating for VQFN package From: –40°C to 85°C To: –40°C to +125°C throughout the data sheet .... 1
• Changed values in the Thermal Information table: 86 to 98.4 for (D), 96 to 112.2 for (DB), 127 to 140.9 for (DGV),
76 to 93.9 for (NS), 113 to 127.7 for (PW), 47 to 35 for (RGY) ............................................................................................. 5
2
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