74ALVCH245

74ALVCH245 Low Voltage Bidirectional Transceiver with Bushold

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74ALVCH245 Low Voltage Bidirectional Transceiver with Bushold

September 2001 Revised February 2002

74ALVCH245 Low Voltage Bidirectional Transceiver with Bushold
General Description
The ALVCH245 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 ALVCH245 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 74ALVCH245 is designed for low voltage (1.65V to 3.6V) VCC applications. The 74ALVCH245 is fabricated with an advanced CMOS technology to achieve high-speed operation while maintaining low CMOS power dissipation.

Features
s 1.65V to 3.6V VCC supply operation s Bushold on data inputs eliminates the need for external pull-up/pull-down resistors s tPD 3.6 ns max for 3.0V to 3.6V VCC 4.2 ns max for 2.3V to 2.7V VCC 6 ns max for 1.65V to 1.95V VCC s Uses patented Quiet Series noise/EMI reduction circuitry s Latchup conforms to JEDEC JED78 s ESD performance: Human body model 2000V Machine model 200V

Ordering Code:
Order Number 74ALVCH245WM 74ALVCH245MTC Package Number M20B MTC20 Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 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 A0 A7 B0 B7 Description 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.

2002 Fairchild Semiconductor Corporation

DS500648

www.fairchildsemi.com