SN74LV8T245RKSR中文资料德州仪器数据手册PDF规格书

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).