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SN74ALVCH244NS датащи(PDF) 1 Page - Texas Instruments

номер детали SN74ALVCH244NS
подробное описание детали  OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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SN74ALVCH244NS датащи(HTML) 1 Page - Texas Instruments

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SN74ALVCH244
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES112C – JULY 1997 – REVISED FEBRUARY 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D EPIC™ (Enhanced-Performance Implanted
CMOS) Submicron Process
D Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
D Package Options Include Plastic
Small-Outline (DW, NS), Thin Very
Small-Outline (DGV), and Thin Shrink
Small-Outline (PW) Packages
description
This octal buffer/line driver is designed for 1.65-V to 3.6-V VCC operation.
The SN74ALVCH244 is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE
is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are 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.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN74ALVCH244 is characterized for operation from –40
°C to 85°C.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
OE
A
Y
L
H
H
L
LL
H
X
Z
Copyright
© 1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC is a trademark of Texas Instruments Incorporated.
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1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
DGV, DW, NS, OR PW PACKAGE
(TOP VIEW)


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