74LVCH245A

Document number: DS35891 Rev. 1 - 2

1 of 10

www.diodes.com

July 2014

© Diodes Incorporated

74LVCH245A

OCTAL BUS TRANSCEIVER WITH BUS HOLD / 3 STATE OUTPUTS

Description

The 74LVCH245A 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

output preventing damaging current backflow when the device is

powered down.

Bus hold circuitry holds unused or undriven inputs at a high or low

logic state. The use of external pull-up or pull down resistors is not

recommended.

Features

•

Supply Voltage Range from 1.65V to 3.6V

•

•

CMOS Low Power Consumption

•

•

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

•

•

•

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.