74LVC245AQ20-13 查看數據表（PDF） - Diodes Incorporated.

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74LVC245AQ20-13

OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS

Diodes Incorporated. 

74LVC245A

OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS

Description

The 74LVC245A is an octal transceiver designed for asynchronous

communication between data buses. The device transmits data from

the A bus to the B bus or from the B bus to the A bus, depending on

the logic level at the direction-control (DIR) input. The output-enable

(OE) pin can be used to disable the device so the buses effectively are

isolated.

The device is designed for operation with a power supply range of

1.65V to 3.6V.

The inputs are tolerant to 5.5V allowing this device to be used in a

mixed voltage environment. The device is fully specified for partial

power down applications using IOFF. The IOFF circuitry disables the

output preventing damaging current backflow when the device is

powered down.

Features

 Supply Voltage Range from 1.65V to 3.6V

 Sinks or Sources 24ma at VCC = 3V

 CMOS Low Power Consumption

 IOFF Supports Partial Power Down Operation

 Inputs or Outputs Accept Up to 5.5V

 Inputs Can Be Driven by 3.3V or 5V Allowing for Mixed Voltage

Applications

 Schmitt Trigger Action at All Inputs

 Typical VOLP (Quiet Output Ground Bounce) Less Than 0.8V with

VCC = 3.3V and TA = +25°C

 Typical VOHV (Quiet Output dynamic VOH) Greater than 2.0V with

VCC = 3.3V and TA = +25°C

 ESD Protection Tested per JESD 22

 Exceeds 200-V Machine Model (A115)

 Exceeds 2000-V Human Body Model (A114)

 Exceeds 1000-V Charged Device Model (C101)

 Latch-Up Exceeds 250mA per JESD 78, Class I

 All devices are:

 Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2)

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

Pin Assignments

Applications

 General Purpose Logic

 Bus Driving

 Power Down Signal Isolation

 Wide array of products such as:

 PCs, Notebooks, Netbooks, Ultrabooks

 Networking Computer Peripherals, Hard Drives, CD/DVD

ROM

 TV, DVD, DVR, Set Top Box

Notes:

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

2. See http://www.diodes.com/quality/lead_free.html 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.

74LVC245A

Document number: DS35890 Rev. 1 - 2

1 of 10

www.diodes.com

August 2014

© Diodes Incorporated

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