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SN74HC244DWG4 датащи(PDF) 11 Page - Texas Instruments

номер детали SN74HC244DWG4
подробное описание детали  Octal Buffers and Line Drivers With 3-State Outputs
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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SN74HC244DWG4 датащи(HTML) 11 Page - Texas Instruments

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1OE
1
1A1
2
18
1Y1
1A2
4
16
1Y1
1A3
6
14
1Y1
1A4
8
12
1Y4
2OE
19
2A1
11
9
1Y1
2A2
13
7
1Y1
2A3
15
5
1Y1
2A4
17
3
1Y4
Copyright © 2016, Texas Instruments Incorporated
11
SN54HC244, SN74HC244
www.ti.com
SCLS130E – DECEMBER 1982 – REVISED MAY 2016
Product Folder Links: SN54HC244 SN74HC244
Submit Documentation Feedback
Copyright © 1982–2016, Texas Instruments Incorporated
8 Detailed Description
8.1 Overview
The SNx4HC244 device is organized as two 4-bit buffers and 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.
8.2 Functional Block Diagram
8.3 Feature Description
The SNx4HC244 has a wide operating voltage of 2 V to 6 V. Inputs accept voltage levels up to VCC. This device
has a low power consumption of ICC 80 µA (maximum). The SNx4HC244 device can drive ±6 mA at VCC of 5 V.
8.4 Device Functional Modes
Table 2 lists the functions of the SNx4HC244.
Table 2. Function Table
(Each Buffer or Driver)
INPUTS
OUTPUT
OE
A
Y
L
H
H
L
L
L
H
X
Z


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