SN74AXC2T245屬于集成電路（IC）的轉(zhuǎn)換器電平移位器。由美國德州儀器公司制造生產(chǎn)的SN74AXC2T245轉(zhuǎn)換器，電平移位器邏輯轉(zhuǎn)換器或電平移位器 IC 可用于在數(shù)字邏輯設(shè)備之間傳遞信息，這些設(shè)備可在不同/不兼容的供電電壓下工作，或可實(shí)現(xiàn)不同的信令方式。例如，可以將需要 5 V 電源的數(shù)字輸出傳感器連接到具有 3.3 V I/O 電源的 FPGA，或者在 CMOS 或 TTL 等單端信令方式與 PECL 或 LVDS 等差分技術(shù)之間進(jìn)行轉(zhuǎn)換。

1 Features

1? AEC-Q100 automotive qualified

? Fully configurable dual-rail design allows each

port to operate with a power supply range rrom

0.65 V to 3.6 V

? Operating temperature from –40°C to +125°C

? DIR control input for each channel

? Glitch-free power supply sequencing

? Up to 380 Mbps support when translating from 1.8

V to 3.3 V

? VCC isolation feature

– If either VCC input is below 100 mV, all I/O

outputs are disabled and become highimpedance

? Ioff supports partial-power-down mode operation

? Compatible with AVC-family level shifters

? Latch-up performance exceeds 100 mA per JESD

78, class II

? ESD protection exceeds JEDEC JS-001

– 8000-V Human-body model

– 1000-V Charged-device model

2 Applications

? HEV/EV

? Infotainment head unit

? ADAS fusion

? ADAS front camera

? Enterprise and communications

3 Description

The SN74AXC2T245-Q1 is a two-bit noninverting bus

transceiver that uses two individually configurable

power-supply rails. The device is operational with

both VCCA and VCCB supplies as low as 0.65 V. The A

port is designed to track VCCA, which accepts any

supply voltage from 0.65 V to 3.6 V. The B port is

designed to track VCCB, which also accepts any

supply voltage from 0.65 V to 3.6 V. Additionally the

SN74AXC2T245-Q1 is compatible with a singlesupply

system.

The SN74AXC2T245-Q1 device is designed for

asynchronous communication between data buses.

The device transmits data from the A bus to the B

bus or from the B bus to the A bus, depending on the

logic level of the direction-control inputs (DIRx). The

SN74AXC2T245-Q1 device is designed so the control

pin (DIR) is referenced to VCCA.

This device is fully specified for partial-power-down

applications using the Ioff current. The Ioff protection

circuitry ensures that no excessive current is drawn

from or to an input, output, or combined I/O that is

biased to a specific voltage while the device is

powered down.

The VCC isolation feature ensures that if either VCCA

or VCCB is less than 100 mV, both I/O ports enter a

high-impedance state by disabling their outputs.

Glitch-free power supply sequencing allows either

supply rail to be powered on or off in any order while

providing robust power sequencing performance.