
Semiconductor Components Industries, LLC, 2006
March, 2006
Rev. 7
1
Publication Order Number:
MC74AC373/D
MC74AC373, MC74ACT373
Octal Transparent Latch
with 3State 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.
Eight Latches in a Single Package
3
State Outputs for Bus Interfacing
Outputs Source/Sink 24 mA
′
ACT373 Has TTL Compatible Inputs
These devices are available in Pb
free package(s). Specifications herein
apply to both standard and Pb
free devices. Please see our website at
www.onsemi.com for specific Pb
free orderable part numbers, or
contact your local ON Semiconductor sales office or representative.
Figure 1. Pinout: 20
Lead Packages Conductors
(Top View)
19
20
18
17
16
15
14
2
1
3
4
5
6
7
V
CC
13
8
12
9
11
10
O
7
D
7
D
6
O
6
O
5
D
5
D
4
O
4
LE
OE
O
0
D
0
D
1
O
1
O
2
D
2
D
3
O
3
GND
PIN ASSIGNMENT
PIN
FUNCTION
D
0
D
7
Data Inputs
LE
Latch Enable Input
OE
Output Enable Input
O
0
O
7
3
State Latch Outputs
Figure 2. Logic Symbol
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
LE
OE
http://onsemi.com
1
20
PDIP
20
N SUFFIX
CASE 738
1
20
1
20
1
20
SO
20
DW SUFFIX
CASE 751
TSSOP
20
DT SUFFIX
CASE 948E
EIAJ
20
M SUFFIX
CASE 967
Device
Package
Shipping
ORDERING INFORMATION
MC74AC373N
PDIP
20
18 Units/Rail
MC74ACT373N
PDIP
20
18 Units/Rail
MC74AC373DW
SOIC
20
38 Units/Rail
MC74AC373DWR2
SOIC
20
1000 Tape & Reel
MC74ACT373DW
SOIC
20
38 Units/Rail
MC74ACT373DWR2
SOIC
20
1000 Tape & Reel
MC74AC373DT
TSSOP
20
75 Units/Rail
MC74AC373DTR2
TSSOP
20
2500 Tape & Reel
MC74ACT373DT
TSSOP
20
75 Units/Rail
MC74ACT373DTR2
TSSOP
20
2500 Tape & Reel
MC74AC373M
EIAJ
20
40 Units/Rail
MC74AC373MEL
EIAJ
20
2000 Tape & Reel
MC74ACT373M
EIAJ
20
40 Units/Rail
MC74ACT373MEL
EIAJ
20
2000 Tape & Reel
See general marking information in the device marking
section on page 8 of this data sheet.
DEVICE MARKING INFORMATION