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SN74ALVCH244DWRG4 Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce SN74ALVCH244DWRG4
Description  OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

SN74ALVCH244DWRG4 Fiches technique(HTML) 1 Page - Texas Instruments

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FEATURES
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
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)
DESCRIPTION/ORDERING INFORMATION
SN74ALVCH244
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES112F – JULY 1997 – REVISED AUGUST 2004
Operates From 1.65 V to 3.6 V
Max tpd of 2.8 ns at 3.3 V
±24-mA Output Drive at 3.3 V
Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
Latch-Up Performance Exceeds 250 mA Per
JESD 17
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
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 holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors
with the bus-hold circuitry is not recommended.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
Tube
SN74ALVCH244DW
SOIC - DW
ALVCH244
Tape and reel
SN74ALVCH244DWR
SOP - NS
Tape and reel
SN74ALVCH244NSR
ALVCH244
-40
°C to 85°C
Tube
SN74ALVCH244PW
TSSOP - PW
VB244
Tape and reel
SN74ALVCH244PWR
TVSOP - DGV
Tape and reel
SN74ALVCH244DGVR
VB244
(1)
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
Y
OE
A
L
H
H
L
L
L
H
X
Z
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.
PRODUCTION DATA information is current as of publication date.
Copyright © 1997–2004, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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