74LVC2T45

Document number: DS43360 Rev. 1 - 2

1 of 15

www.diodes.com

January 2021

© Diodes Incorporated

74LVC2T45

DUAL BIT DUAL POWER SUPPLY TRANSLATING

TRANSCEIVER WITH 3 STATE OUTPUTS

Description

The 74LVC2T45 is a dual-bit, dual-supply transceiver with tri-state

outputs suitable for transmitting two logic bits across different

voltage domains. The direction pin (DIR) and Port A, consisting of

This arrange- ment allows for universal low-voltage translation

between any voltages from 1.2V to 5.5V. When a HIGH logic level

is applied to the direction pin, port A pins become inputs and port B

pins are outputs. Conversely, the roles of the ports are reversed

when the direction pin is asserted LOW.

The tri-state (Ioff) feature places all port pins in a high impedance

state when either power supply is at 0V, which prevents and

damages backflow currents and provides power-down electrical

isolation up to 5.5V as not to interfere with any logic activity on

either of the ports.

Features

 Wide Supply Voltage Range:





 ±24mA Output Drive at 3.3V

 High Noise Immunity

 Inputs Accept up to 5.5V

 Maximum data rates:



420Mbps (3.3V to 5V translation)



210Mbps (translate to 3.3V)



140Mbps (translate to 2.5V)



75Mbps (translate to 1.8V)



60Mbps (translate to 1.5V)

 ESD Protection Exceeds JESD 22



4000-V Human Body Model (A114)



1000 V Charged Device Model ( C101)

 Latch-up Exceeds 100mA per JESD 78, Class I

 Specified from -40°C to +85°C and -40°C to +125°C

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

 Halogen and Antimony Free. “Green” Device (Note 3)

 For automotive applications requiring specific change

control (i.e. parts qualified to AEC-Q100/101/200, PPAP

capable, and manufactured in IATF 16949 certified facilities),

please contact us or your local Diodes representative.

https://www.diodes.com/quality/product-definitions/

Pin Assignments

1B

GND

( Top View )

1

2

3

4

5

6

7

8

2B

1A

2A

DIR

X2-DFN1210-8

X2-DFN1410-8

CC

CC

Applications



Voltage Level Translation

Well-Suited to Join Logic Types Operating at Different Voltages



Power-Down Signal Isolation

If Either Voltage Domain is Turned Off the Signal is Isolated and

There is No Loading on Signal Lines



Wide Array of Products, such as:



Cell Phones, Tablets, E-Readers



PCs, Notebooks, Netbooks, Ultrabooks



Networking, Routers, Gateways



Computer Peripherals, Hard Drives, CD/DVD ROM



TV, DVD, DVR, Set-Top Box



Personal Navigation / GPS



MP3 Players, Cameras, Video Recorders

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-

free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and

Lead-free.

3. Halogen- and Antimony-

free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.