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74VCXH245 View Datasheet(PDF) - Fairchild Semiconductor

Part NameDescriptionManufacturer
74VCXH245 Low Voltage Bidirectional Transceiver with Bushold Fairchild
Fairchild Semiconductor Fairchild
74VCXH245 Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
June 1999
Revised April 2005
74VCXH245
Low Voltage Bidirectional Transceiver with Bushold
General Description
The VCXH245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented 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 float-
ing 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 main-
taining low CMOS power dissipation.
Features
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
3.5 ns max for 3.0V to 3.6V VCC
s Static Drive (IOH/IOL)
r24 mA @ 3.0V VCC
s Uses patented Quiet Series¥ 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, 0.300" 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
Description
OE
T/R
A0–A7
B0–B7
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 Series¥ is a trademark of Fairchild Semiconductor Corporation.
© 2005 Fairchild Semiconductor Corporation DS500198
www.fairchildsemi.com
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