參數(shù)資料
型號: SN74LV245ATPWR
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: LV/LV-A/LVX/H SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封裝: GREEN, PLASTIC, TSSOP-20
文件頁數(shù): 12/21頁
文件大小: 751K
代理商: SN74LV245ATPWR
www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
DIR
OE
A1
B1
To Seven Other Channels
1
2
19
18
SN74LV245AT
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCLS605B – DECEMBER 2004 – REVISED AUGUST 2005
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.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
FUNCTION TABLE
(EACH TRANSCEIVER)
INPUTS
OPERATION
OE
DIR
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
LOGIC DIAGRAM (POSITIVE LOGIC)
2
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