FSTD3125 Series

4-Bit Bus Switch with Level Shifting

Catalog

4-Bit Bus Switch with Level Shifting

Part	Mounting Type	Package / Case [custom]	Package / Case [custom]	Package / Case	Voltage Supply Source	Type	Operating Temperature [Max]	Operating Temperature [Min]	Circuit	Supplier Device Package	Independent Circuits	Voltage - Supply [Min]	Voltage - Supply [Max]
ON Semiconductor FSTD3125QSC	Surface Mount	0.173 "	4.4 mm	14-TSSOP	Single Supply	Bus Switch	85 °C	-40 °C	1 x 1:1	14-TSSOP	4	4.5 V	5.5 V
ON Semiconductor FSTD3125M	Surface Mount	0.173 "	4.4 mm	14-TSSOP	Single Supply	Bus Switch	85 °C	-40 °C	1 x 1:1	14-TSSOP	4	4.5 V	5.5 V
ON Semiconductor FSTD3125MX	Surface Mount	0.173 "	4.4 mm	14-TSSOP	Single Supply	Bus Switch	85 °C	-40 °C	1 x 1:1	14-TSSOP	4	4.5 V	5.5 V
ON Semiconductor FSTD3125MTCX	Surface Mount	0.173 "	4.4 mm	14-TSSOP	Single Supply	Bus Switch	85 °C	-40 °C	1 x 1:1	14-TSSOP	4	4.5 V	5.5 V
ON Semiconductor FSTD3125QSCX	Surface Mount	0.173 "	4.4 mm	14-TSSOP	Single Supply	Bus Switch	85 °C	-40 °C	1 x 1:1	14-TSSOP	4	4.5 V	5.5 V

Catalog

4-Bit Bus Switch with Level Shifting

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

• TruTranslation™ voltage translation from 5.0V inputs to 3.3V outputs

Description

ON Semiconductor switch FSTD3125 provides four high-speed CMOS TTL-compatible bus switches. The low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. A diode to VCChas been integrated into the circuit to allow for level shifting between 5V inputs and 3.3V outputs.The device is organized as four one-bit switches with separate /OE inputs. 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.