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SN74AHC541DBLE データシート(PDF) 9 Page - Texas Instruments

部品番号 SN74AHC541DBLE
部品情報  Octal Buffers/Drivers
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SN74AHC541DBLE データシート(HTML) 9 Page - Texas Instruments

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OE1
OE2
To Seven Other Channels
A1
Y1
1
19
2
18
SN74AHC541, SN54AHC541
www.ti.com
SCLS261O – OCTOBER 1995 – REVISED SEPTEMBER 2015
8 Detailed Description
8.1 Overview
The SNx4AHC541 octal buffers/drivers are ideal for driving bus lines or buffer memory address registers. These
devices feature inputs and outputs on opposite sides of the package to facilitate printed circuit board layout.
The 3-state control gate is a two-input AND gate with active-low inputs. If either output-enable (OE1 or OE2)
input is high, all corresponding outputs are in the high-impedance state. The outputs provide noninverted data
when they are not in the high-impedance state.
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.
8.2 Functional Block Diagram
8.3 Feature Description
The SNx4AHC541 has a wide operating voltage range of 2 V to 5.5 V. It allows down voltage translations while
accepting input voltages of up to 5.5 V. The slow edges of the SNx4AHC541 enables the reduction of output
ringing.
8.4 Device Functional Modes
Table 1 lists the functional modes for the SNx4AHC541 devices.
Table 1. Function Table
(Each Buffer/Driver)
INPUTS
OUTPUT
Y
OE1
OE2
A
L
L
L
L
L
L
H
H
H
X
X
Z
X
H
X
Z
Copyright © 1995–2015, Texas Instruments Incorporated
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Product Folder Links: SN74AHC541 SN54AHC541


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