SN74LV8T245RKSR中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

1 Features

? Wide operating range of 1.8 V to 5.5 V

? Single-supply voltage translator (refer to LVxT

Enhanced Input Voltage):

– Up translation:

? 1.2 V to 1.8 V

? 1.5 V to 2.5 V

? 1.8 V to 3.3 V

? 3.3 V to 5.0 V

– Down translation:

? 5.0 V, 3.3 V, 2.5 V to 1.8 V

? 5.0 V, 3.3 V to 2.5 V

? 5.0 V to 3.3 V

? 5.5 V tolerant input pins

? Supports standard pinouts

? Up to 150 Mbps with 5 V or 3.3 V VCC

? Latch-up performance exceeds 250 mA

per JESD 17

2 Applications

? Enable or disable a digital signal

? Eliminate slow or noisy input signals

? Hold a signal during controller reset

? Debounce a switch

3 Description

The SN74LV8T245 is an octal bus transceiver with 3-

state outputs. All eight channels are controlled by the

direction (DIR) pin and output enable (OE) pin. The

output level is referenced to the supply voltage (VCC)

and supports 1.8-V, 2.5-V, 3.3-V, and 5-V CMOS

levels.

The input is designed with a lower threshold circuit to

support up translation for lower voltage CMOS inputs

(for example, 1.2 V input to 1.8 V output or 1.8 V input

to 3.3 V output). Additionally, the 5-V tolerant input

pins enable down translation (for example, 3.3 V to

2.5 V output).