MC74AC373, MC74ACT373
Octal Transparent Latch
with 3−State Outputs
The MC74AC373/74ACT373 consists of eight latches with 3−state
outputs for bus organized system applications. The flip−flops appear
transparent to the data when Latch Enable (LE) is HIGH. When LE is
LOW, the data that meets the setup time is latched. Data appears on the
bus when the Output Enable (OE) is LOW. When OE is HIGH, the bus
output is in the high impedance state.
Features
http://onsemi.com
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Eight Latches in a Single Package
3−State Outputs for Bus Interfacing
Outputs Source/Sink 24 mA
′ACT373
Has TTL Compatible Inputs
Pb−Free Packages are Available
V
CC
20
O
7
19
D
7
18
D
6
17
O
6
16
O
5
15
D
5
14
D
4
13
O
4
12
LE
11
PDIP−20
N SUFFIX
CASE 738
1
SOIC−20W
DW SUFFIX
CASE 751D
1
TSSOP−20
DT SUFFIX
CASE 948E
1
OE
2
O
0
3
D
0
4
D
1
5
O
1
6
O
2
7
D
2
8
D
3
9
O
3
10
GND
SOEIAJ−20
M SUFFIX
CASE 967
1
1
Figure 1. Pinout: 20−Lead Packages Conductors
(Top View)
PIN ASSIGNMENT
PIN
D
0
−D
7
LE
OE
O
0
−O
7
FUNCTION
Data Inputs
Latch Enable Input
Output Enable Input
3−State Latch Outputs
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 9 of this data sheet.
LE
OE
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
Figure 2. Logic Symbol
©
Semiconductor Components Industries, LLC, 2006
1
November, 2006 − Rev. 8
Publication Order Number:
MC74AC373/D
ONSEMI [ ON SEMICONDUCTOR ]
