FST3245 Series

8-Bit Bus Switch

Catalog

8-Bit Bus Switch

Part	Package / Case	Package / Case [y]	Package / Case [y]	Circuit [custom]	Circuit [custom]	Independent Circuits	Voltage Supply Source	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Supplier Device Package	Package / Case [x]
ON Semiconductor FST3245WMX	20-SOIC	0.295 in	7.5 mm	8	1:1	1	Single Supply	Surface Mount	85 °C	-40 °C	Bus Switch	5.5 V	4 V	20-SOIC
ON Semiconductor FST3245QSCX	20-LSSOP (0.154" 3.90mm Width)			8	1:1	1	Single Supply	Surface Mount	85 °C	-40 °C	Bus Switch	5.5 V	4 V	20-QSOP
ON Semiconductor FST3245WM	20-SOIC	0.295 in	7.5 mm	8	1:1	1	Single Supply	Surface Mount	85 °C	-40 °C	Bus Switch	5.5 V	4 V	20-SOIC
ON Semiconductor FST3245MTCX	20-TSSOP	4.4 mm		8	1:1	1	Single Supply	Surface Mount	85 °C	-40 °C	Bus Switch	5.5 V	4 V	20-TSSOP	0.173 in
ON Semiconductor FST3245QSC	20-LSSOP (0.154" 3.90mm Width)			8	1:1	1	Single Supply	Surface Mount	85 °C	-40 °C	Bus Switch	5.5 V	4 V	20-QSOP

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 FST3245 switch provides eight-bits of high-speed CMOS TTL-compatible bus switching in a standard ’245 pin-out. The low on resistance 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. When /OE is LOW, the switch is ON and port A is connected to port B. When /OE is HIGH, the switch is OPEN and a high-impedance state exists between the two ports.