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AD244 Marking, SN74ACT244DBR Datasheet(PDF) 3 Page - Texas Instruments

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Part # SN74ACT244DBR
Description  SNx4ACT244 Octal Buffers and Drivers With 3-State Outputs
PDF  38 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

SN74ACT244DBR Datasheet(HTML) 3 Page - Texas Instruments

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4 Pin Configuration and Functions
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
Figure 4-1. SN54ACT244: J or W Packages, 20-Pin
CDIP or CFP (Top View)
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
Figure 4-2. SN74ACT244: DGS, DB, DW, N, NS, or
PW Packages, 20-Pin VSSOP SSOP, SOIC, PDIP,
SO, or TSSOP (Top View)
3
2
1
20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
Figure 4-3. SN54ACT244: FK Package 20-Pin LCCC
(Top View)
1A1
2Y4
1A2
2Y3
1A3
2Y2
GND
2OE
1Y1
2A4
1Y2
2A3
2A1
1Y3
1OE
V
CC
2
3
4
5
6
7
10
19
18
17
16
15
14
11
1
20
1A4
2Y1
2A2
1Y4
9
13
12
8
PAD
Figure 4-4. SN74ACT244: RKS Packages, 20-Pin
VQFN (Top View)
Table 4-1. Pin Functions
PIN
TYPE(1)
DESCRIPTION
NO.
NAME
1
1 OE
I
1 Active low Output enable
2
1A1
I
1A1 input
3
2Y4
O
2Y4 output
4
1A2
I
1A2 input
5
2Y3
O
2Y3 Output
6
1A3
I
1A3 input
7
2Y2
O
2Y2 Output
8
1A4
I
1A4 input
9
2Y1
O
2Y1 Output
10
GND
—
Ground
11
2A1
I
2A1 input
12
1Y4
O
1Y4 output
13
2A2
I
2A2 input
14
1Y3
O
1Y3 Output
15
2A3
I
2A3 input
16
1Y2
O
1Y2 Output
17
2A4
I
2A4 input
18
1Y1
O
1Y1 Output
19
2 OE
I
2 Active low Output enable
20
VCC
—
Power
(1)
I = input, O = output
www.ti.com
SN54ACT244, SN74ACT244
SCAS517G – JUNE 1995 – REVISED MARCH 2024
Copyright © 2024 Texas Instruments Incorporated
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Product Folder Links: SN54ACT244 SN74ACT244



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