FST3345 Series

8-Bit Bus Switch

Catalog

8-Bit Bus Switch

Part	Mounting Type	Independent Circuits	Supplier Device Package	Voltage - Supply [Max]	Voltage - Supply [Min]	Type	Operating Temperature [Max]	Operating Temperature [Min]	Circuit [custom]	Circuit [custom]	Package / Case	Package / Case [custom]	Voltage Supply Source	Package / Case	Circuit [custom]	Package / Case [y]	Package / Case [x]
ON Semiconductor FST3384QSCX	Surface Mount	2	24-QSOP	5.5 V	4 V	Bus Switch	85 °C	-40 °C	1:1	5	24-SSOP	0.154 " 3.9 mm	Single Supply
ON Semiconductor FST3384MTC	Surface Mount	2	24-TSSOP	5.5 V	4 V	Bus Switch	85 °C	-40 °C	1:1	5	24-TSSOP		Single Supply	0.173 in 4.4 mm
ON Semiconductor FST3384QSC	Surface Mount	2	24-QSOP	5.5 V	4 V	Bus Switch	85 °C	-40 °C	1:1	5	24-SSOP	0.154 " 3.9 mm	Single Supply
ON Semiconductor FST3345MTCX	Surface Mount	1	20-TSSOP	5.5 V	4 V	Bus Switch	85 °C	-40 °C		8	20-TSSOP		Single Supply		1:1	4.4 mm	0.173 in
ON Semiconductor FST3384QSCX	Surface Mount	2	24-QSOP	5.5 V	4 V	Bus Switch	85 °C	-40 °C	1:1	5	24-SSOP	0.154 " 3.9 mm	Single Supply

Catalog

8-Bit Bus Switch

Key Features

• 4ohm switch connection between two ports.

• Minimal propagation delay through the switch.

• Low lCC.

• Zero bounce in flow-through mode.

• Control inputs compatible with TTL level.

Description

The FST3345 switch provides eight-bits of high-speed CMOS TTL-compatible bus switching. The low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. The device is organized as an eight-bit switch with dual output enable inputs (OE and /OE). When /OE is LOW or OE is HIGH, the switch is ON and port A is connected to port B. When /OE is HIGH, and OE is LOW, the switch is OPEN and a high-impedance state exists between the two ports.