Fairchild FST3306 Data Handbook

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3306 2-B it L er B s S itch

February 2001 Revised February 2001

FST3306 2-Bit Low Power Bus Switch General Description Features The FST3306 is a 2-bit ultra high-speed CMOS FET bus ■Typical 3Ω switch resistance at 5.0V VCC switch with TTL-compatible active LOW control inputs. The

■Minimal propagation delay through the switch

low on resistance of the switch allows inputs to be con-

■Power down high impedance input/output

nected to outputs with minimal propagation delay and with-

out generating additional ground bounce noise. The device ■Zero bounce in flow through mode.

is organized as a 2-bit switch with independent bus enable ■TTL compatible active LOW control inputs (BE) controls. When BE is LOW, the switch is ON and

■Control inputs are overvoltage tolerant

Port A is connected to Port B. When BE is HIGH, the switch is OPEN and a high-impedance state exists between the two ports. Control inputs tolerate voltages up to 5.5V independent of VCC.

Ordering Code: Order Number Package Number Package Description FST3306MTC MTC08 8-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 Connection Diagram

(Top View)

Pin Descriptions Function Table Pin Name Description

Bus Enable Input BE Function

Bus A

B Connected to A

Bus B Disconnected

BE Bus Enable Input H = HIGH Logic Level L = LOW Logic Level

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