1. General description

The 74CBTLV3257 provides a quad 1-of-2 high-speed multiplexer/demultiplexer with common

select (S) and output enable (OE) inputs. The low ON resistance of the switch allows inputs

to be connected to outputs without adding propagation delay or generating additional ground

bounce noise. When pin OE = LOW, one of the two switches is selected (low-impedance ON-state)

with pin S. When pin OE = HIGH, all switches are in the high-impedance OFF-state, independent

of pin S.

Schmitt trigger action at control input makes the circuit tolerant to slower input rise and fall times

across the entire VCC range from 2.3 V to 3.6 V.

To ensure the high-impedance OFF-state during power-up or power-down, OE should be tied

to the VCC through a pull-up resistor. The minimum value of the resistor is determined by the

current-sinking capability of the driver.

This device is fully specified for partial power-down applications using IOFF. The IOFF circuitry

disables the output, preventing the damaging backflow current through the device when it is

powered down.

2. Features and benefits

• Supply voltage range from 2.3 V to 3.6 V

• High noise immunity

• Complies with JEDEC standard:

• JESD8-5 (2.3 V to 2.7 V)

• JESD8-B/JESD36 (2.7 V to 3.6 V)

• ESD protection:

• HBM JESD22-A114F exceeds 2000 V

• MM JESD22-A115-A exceeds 200 V

• CDM AEC-Q100-011 revision B exceeds 1000 V

• 5 Ω switch connection between two ports

• Rail to rail switching on data I/O ports

• CMOS low power consumption

• Latch-up performance exceeds 250 mA per JESD78B Class I level A

• IOFF circuitry provides partial Power-down mode operation

• Multiple package options

• Specified from -40 °C to +85 °C and -40 °C to +125 °C

74CBTLV3257D属于集成电路（IC） > 信号开关，多路复用器，解码器。安世半导体(中国)有限公司制造生产的74CBTLV3257D信号开关，多路复用器，解码器逻辑型信号开关、多路复用器和编码器 IC 可用于对以数字格式表示数据的电信号进行路由和选择。这些器件与设计用于模拟信号的类似产品有所不同，它们保留的信息表示为两个电状态之一，而不是两个外部界限内的无穷变化量。