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SN74LVC2T45YZP Datasheet Preview

SN74LVC2T45YZP Datasheet

Dual-Bit Dual-Supply Bus Transceiver

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SN74LVC2T45
SCES516K – DECEMBER 2003 – REVISED JUNE 2017
SN74LVC2T45 Dual-Bit Dual-Supply Bus Transceiver With Configurable Voltage
Translation
1 Features
1 Fully Configurable Dual-Rail Design Allows Each
Port to Operate Over the Full 1.65-V to 5.5-V
Power-Supply Range
• VCC Isolation Feature – If Either VCC Input Is at
GND, Both Ports Are in the High-Impedance State
• DIR Input Circuit Referenced to VCCA
• Low Power Consumption, 4-μA Max ICC
• Available in the Texas Instruments NanoFree™
Package
• ±24-mA Output Drive at 3.3 V
• Ioff Supports Partial-Power-Down Mode Operation
• Max Data Rates
– 420 Mbps (3.3-V to 5-V Translation)
– 210 Mbps (Translate to 3.3 V)
– 140 Mbps (Translate to 2.5 V)
– 75 Mbps (Translate to 1.8 V)
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 4000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
2 Applications
• Personal Electronic
• Industrial
• Enterprise
• Telecom
3 Description
This dual-bit noninverting bus transceiver uses two
separate configurable power-supply rails. The A port
is designed to track VCCA. VCCA accepts any supply
voltage from 1.65 V to 5.5 V. The B port is designed
to track VCCB. VCCB accepts any supply voltage from
1.65 V to 5.5 V. This allows for universal low-voltage
bidirectional translation between any of the 1.8-V,
2.5-V, 3.3-V, and 5-V voltage nodes.
The SN74LVC2T45 is designed for asynchronous
communication between two data buses. The logic
levels of the direction-control (DIR) input activate
either the B-port outputs or the A-port outputs. The
device transmits data from the A bus to the B bus
when the B-port outputs are activated, and from the B
bus to the A bus when the A-port outputs are
activated. The input circuitry on both A and B ports
always is active and must have a logic HIGH or LOW
level applied to prevent excess ICC and ICCZ.
The SN74LVC2T45 is designed so that the DIR input
circuit is supplied by VCCA. This device is fully
specified for partial-power-down applications using
Ioff. The Ioff circuitry disables the outputs, preventing
damaging current backflow through the device when
it is powered down.
The VCC isolation feature ensures that if either VCC
input is at GND, both ports are in the high-impedance
state. NanoFree™ package technology is a major
breakthrough in IC packaging concepts, using the die
as the package.
Device Information(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
SN74LVC2T45DCT SM8 (8)
2.95 mm x 2.80 mm
SN74LVC2T45DCU VSSOP (8) 2.30 mm x 2.00 mm
SN74LVC2T45YZP DSBGA (8) 1.89 mm x 0.89 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Functional Block Diagram
DIR 5
A1 2
A2 3
7
B1
6
B2
VCCA
VCCB
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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SN74LVC2T45YZP Datasheet Preview

SN74LVC2T45YZP Datasheet

Dual-Bit Dual-Supply Bus Transceiver

No Preview Available !

SN74LVC2T45
SCES516K – DECEMBER 2003 – REVISED JUNE 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 .......................................... 6
6.6 Switching Characteristics: VCCA = 1.8 V ± 0.15 V..... 6
6.7 Switching Characteristics: VCCA = 2.5 V ± 0.2 V....... 7
6.8 Switching Characteristics: VCCA = 3.3 V ± 0.3 V....... 7
6.9 Switching Characteristics: VCCA = 5 V ± 0.5 V.......... 8
6.10 Operating Characteristics........................................ 8
6.11 Typical Characteristics ............................................ 9
7 Parameter Measurement Information ................ 12
8 Detailed Description ............................................ 13
8.1 Overview ................................................................. 13
8.2 Functional Block Diagram ....................................... 13
8.3 Feature Description................................................. 13
8.4 Device Functional Modes........................................ 13
9 Application and Implementation ........................ 14
9.1 Application Information............................................ 14
9.2 Typical Applications ................................................ 14
10 Power Supply Recommendations ..................... 17
10.1 Power-Up Considerations ..................................... 17
11 Layout................................................................... 17
11.1 Layout Guidelines ................................................. 17
11.2 Layout Example .................................................... 18
12 Device and Documentation Support ................. 19
12.1 Documentation Support ........................................ 19
12.2 Receiving Notification of Documentation Updates 19
12.3 Community Resources.......................................... 19
12.4 Trademarks ........................................................... 19
12.5 Electrostatic Discharge Caution ............................ 19
12.6 Glossary ................................................................ 19
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 J (October 2014) to Revision K
Page
• Changed data sheet title......................................................................................................................................................... 1
• Added Junction temperature, TJ in Absolute Maximum Ratings ............................................................................................ 4
• Added Documentation Support, Receiving Notification of Documentation Updates and Community Resources .............. 19
Changes from Revision I (March 2007) to Revision J
Page
• Added Pin Configuration and Functions 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
2
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Product Folder Links: SN74LVC2T45


Part Number SN74LVC2T45YZP
Description Dual-Bit Dual-Supply Bus Transceiver
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