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CD74ACT258M Datasheet(PDF) 3 Page - Texas Instruments

Part # CD74ACT258M
Description  CDx4AC257, CDx4ACT257, CD74ACT258 Quad 2-Input Multiplexer with Three-State Outputs
PDF  29 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

CD74ACT258M Datasheet(HTML) 3 Page - Texas Instruments

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3 Pin Configuration and Functions
Figure 3-1. CD54AC257, CD54ACT257 J Package;
CD74AC257, CD74ACT257, CD74ACT258 D, N, or
PW Package; 16-Pin SOIC PDIP, or TSSOP (Top
View)
GND
PAD
V
CC
2
3
4
5
6
7
8
15
14
13
12
11
10
9
1
16
A/B
1A
1B
1Y
2A
2B
2Y
4A
4Y
3A
OE
3Y
4B
3B
Figure 3-2. CD74AC257, CD74ACT257,
CD74ACT258 BQB Package, 16-Pin WQFN (Top
View)
Table 3-1. Pin Functions
PIN
TYPE(1)
DESCRIPTION
NAME
NO.
S
1
I
Select
1I0
2
I
Channel 1 Input 0
1I1
3
I
Channel 1 Input 1
1Y
4
O
Channel 1 Output
2I0
5
I
Channel 2 Input 0
2I1
6
I
Channel 2 Input 1
2Y
7
O
Channel 2 Output
GND
8
G
Ground
3Y
9
O
Channel 3 Output
3I1
10
I
Channel 3 Input 1
3I0
11
I
Channel 3 Input 0
4Y
12
O
Channel 4 Output
4I1
13
I
Channel 4 Input 1
4I0
14
I
Channel 4 Input 0
OE
15
I
Output Enable
VCC
16
P
Positive Supply
Thermal Pad(2)
–
The thermal pad can be connected to GND or left floating. Do not connect to any other
signal or supply
(1)
I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.
(2)
BQB Package only
www.ti.com
CD54AC257, CD74AC257, CD54ACT257, CD74ACT257, CD74ACT258
SCHS248C – NOVEMBER 1998 – REVISED APRIL 2025
Copyright © 2025 Texas Instruments Incorporated
Submit Document Feedback
3
Product Folder Links: CD54AC257 CD74AC257 CD54ACT257 CD74ACT257 CD74ACT258



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