74VCXH245WM

74VCXH245WM Datasheet


74VCXH245 Low Voltage Bidirectional Transceiver with Bushold

Part Datasheet
74VCXH245WM 74VCXH245WM 74VCXH245WM (pdf)
Related Parts Information
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PDF Datasheet Preview
74VCXH245 Low Voltage Bidirectional Transceiver with Bushold
74VCXH245 Low Voltage Bidirectional Transceiver with Bushold

The VCXH245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus oriented applications. The T/R input determines the direction of data flow. The OE input disables both the A and B Ports by placing them in a high impedance state. The VCXH245 data inputs include active bushold circuitry, eliminating the need for external pull-up resistors to hold unused or floating data inputs at a valid logic level.

The 74VCXH245 is designed for low voltage 1.2V to 3.6V VCC applications.

The 74VCXH245 is fabricated with an advanced CMOS technology to achieve high-speed operation while maintaining low CMOS power dissipation.
s 1.2V to 3.6V VCC supply operation s Bushold on data inputs eliminates the need for external
pull-up/pull-down resistors s tPD
ns max for 3.0V to 3.6V VCC s Static Drive IOH/IOL
r24 mA 3.0V VCC s Uses patented Quiet noise/EMI reduction
circuitry s Latchup performance exceeds 300 mA s ESD performance:

Human body model ! 2000V Machine model ! 200V
Ordering Code:

Order Number Package Number

Package Description
74VCXH245WM

M20B
20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide
74VCXH245MTC

MTC20
20-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Symbol

Pin Descriptions

Pin Names

OE T/R

Output Enable Input Active LOW Transmit/Receive Input Side A Bushold Inputs or 3-STATE Outputs Side B Bushold Inputs or 3-STATE Outputs

Quiet is a trademark of Fairchild Semiconductor Corporation. 2005 Fairchild Semiconductor Corporation DS500198
74VCXH245

Connection Diagram Logic Diagram

Truth Table

Inputs OE T/R

Outputs

L Bus Data to Bus

H Bus Data to Bus

X HIGH Z State on

H HIGH Voltage Level

L LOW Voltage Level

X Immaterial

Z High Impedance
74VCXH245

Absolute Maximum Ratings Note 1

Supply Voltage VCC DC Input Voltage VI

DC Output Voltage VO Outputs 3-STATE

Outputs Active Note 2
to VCC 0.5V

DC Input Diode Current IIK VI 0V

DC Output Diode Current IOK VO 0V VO ! VCC

DC Output Source/Sink Current

IOH/IOL DC VCC or Ground Current Storage Temperature TSTG
r50 mA r100 mA to

Recommended Operating Conditions Note 3

Power Supply

Operating
1.2V to 3.6V

Input Voltage
to 3.6V

Output Voltage VO Output in Active States Output in 3-STATE
0V to VCC 0V to 3.6V

Output Current in IOH/IOL VCC 3.0V to 3.6V VCC 2.3V to 2.7V VCC 1.65V to 2.3V VCC 1.4V to 1.65V VCC 1.2V

Free Air Operating Temperature TA Minimum Input Edge Rate 't/'V
r24 mA r18 mA
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Datasheet ID: 74VCXH245WM 513486