74LVC2T45集成電路（IC）的轉(zhuǎn)換器電平移位器規(guī)格書PDF中文資料

GENERAL DESCRIPTION

The 74LVC2T45 is a 2-bit, dual-supply bus transceiver

with configurable voltage translation. The device has

two separate configurable power-supply rails. The A

and B ports track the VCCA supply and VCCB supply

respectively. The supply voltage pins accept voltage

range from 1.65V to 5.5V, which makes the device

suitable for low voltage bidirectional translation voltage

nodes of 1.8V, 2.5V, 3.3V, and 5V.

The 74LVC2T45 features that two data buses can

communicate asynchronously. Either the A port outputs

or the B port outputs can be activated by DIR logic

levels. The DIR input circuit is supplied by VCCA. When

B port outputs are activated, the device allows the data

to transmit from A bus to B bus. On the contrary, when

A port outputs are activated, the device allows the data

to transmit from B bus to A bus. The input circuit is

always active on the two ports. A logic level of high or

low must be set to avoid excessive supply current.

FEATURES

● VCCA Supply Voltage Range: 1.65V to 5.5V

● VCCB Supply Voltage Range: 1.65V to 5.5V

● DIR Input Circuit Referenced to VCCA

● +32mA/-32mA Output Current

● Data Rates

? 420Mbps (3.3V to 5V Translation)

? 210Mbps (Translate to 3.3V)

? 140Mbps (Translate to 2.5V)

? 75Mbps (Translate to 1.8V)

● Outputs in High-Impedance State when VCCA or

VCCB = 0V

● -40℃ to +125℃ Operating Temperature Range

● Available in Green MSOP-8 and XTDFN-1.35×1-8L

Packages

APPLICATIONS

Personal Electronic Devices

Industrial and Enterprise Devices

Telecommunications