MC74AC573, MC74ACT573
Octal Buffer/Line Driver
with 3−State Outputs
The MC74AC573/74ACT573 is a high−speed octal latch with
buffered common Latch Enable (LE) and buffered common Output
Enable (OE) inputs.
The MC74AC573/74ACT573 is functionally identical to the
MC74AC373/74ACT373 but has inputs and outputs on opposite sides.
Features
http://onsemi.com
•
Inputs and Outputs on Opposite Sides of Package Allowing Easy
•
•
•
•
•
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Interface with Microprocessors
Useful as Input or Output Port for Microprocessors
Functionally Identical to MC74AC373/74ACT373
3−State Outputs for Bus Interfacing
Outputs Source/Sink 24 mA
′ACT573
Has TTL Compatible Inputs
Pb−Free Packages are Available*
V
CC
20
O
0
19
O
1
18
O
2
17
O
3
16
O
4
15
O
5
14
O
6
13
O
7
12
LE
11
20
1
20
1
MARKING
DIAGRAM
MC74xxx573N
AWLYYWWG
PDIP−20
N SUFFIX
CASE 738
xxx573
AWLYYWWG
SO−20
DW SUFFIX
CASE 751D
1
OE
2
D
0
3
D
1
4
D
2
5
D
3
6
D
4
7
D
5
8
D
6
9
D
7
10
GND
20
1
Figure 1. Pinout 20−Lead Packages Conductors
(Top View)
PIN ASSIGNMENT
PIN
D
0
−D
7
LE
OE
O
0
−O
7
Data Inputs
Latch Enable Input
3−State Output Enable Input
3−State Latch Outputs
20
xxx
573
ALYW
G
G
TSSOP−20
DT SUFFIX
CASE 948E
FUNCTION
74xxx573
AWLYWWG
1
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
LE
OE
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
EIAJ−20
M SUFFIX
CASE 967
xxx
= AC or ACT
A
= Assembly Location
WL, L = Wafer Lot
YY, Y
= Year
WW, W = Work Week
G or
G
= Pb−Free Package
(Note: Microdot may be in either location)
Figure 2. Logic Symbol
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
©
Semiconductor Components Industries, LLC, 2005
1
September, 2005 − Rev. 7
Publication Order Number:
MC74AC573/D
ONSEMI [ ON SEMICONDUCTOR ]
