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74VCXH245WMX-1999 View Datasheet(PDF) - Fairchild Semiconductor

Part NameDescriptionManufacturer
74VCXH245WMX(1999) Low Voltage Bidirectional Transceiver with Bushold Fairchild
Fairchild Semiconductor Fairchild
74VCXH245WMX Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
June 1999
Revised June 1999
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 (1.65V 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.
s 1.65V-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
4.2 ns max for 2.3V to 2.7V VCC
8.4 ns max for 1.65V to 1.95V VCC
s Static Drive (IOH/IOL)
±24 mA @ 3.0V VCC
±18 mA @ 2.3V VCC
± 6mA @ 1.65V VCC
s Uses patented Quiet Series noise/EMI reduction
s Latchup performance exceeds 300 mA
s ESD performance:
Human body model > 2000V
Machine model > 200V
Ordering Code:
Order Number Package Number
Package Description
20-Lead Small Outline Integrated Circuit, JEDEC MS-013, 0.300” Wide Body
20-Lead Thin Shrink Small Outline Package, 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
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 Seriesis a trademark of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation ds500198
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