SN54AHC245中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? AEC-Q100 qualified for automotive applications:

– Device temperature grade 1: –40°C to +125°C,

TA

– Device HBM ESD Classification Level 2

– Device CDM ESD Classifcation Level C6

? Operating range 2 V to 5.5 V VCC

? Latch-Up Performance Exceeds 250 mA Per JESD

17

2 Applications

? Enable or Disable a Digital Signal

? Hold a Signal During Controller Reset

? Debounce a Switch

3 Description

The SN74AHC245-Q1 octal bus transceiver

is designed for asynchronous two-way

communication between data buses. The controlfunction

implementation minimizes external timing

requirements. This device allows data transmission

from the A bus to the B bus or from the B bus

to the A bus, depending on the logic level at the

direction-control (DIR) input. The output-enable (OE)

input can be used to disable the device so that the

buses effectively are isolated.

To ensure the high-impedance state during power up

or power down, OE should be tied to VCC through

a pullup resistor; the minimum value of the resistor

is determined by the current-sinking capability of the

driver.