MC74AC373 Datasheet, PDF (1/8 Pages) Motorola, Inc – OCTAL TRANSPARENT LATCH WITH 3-STATE OUTPUTS

MC74AC373
MC74ACT373
Octal Transparent Latch
with 3ĆState 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
VCC O7 D7 D6 O6 O5 D5 D4 O4 LE
20 19 18 17 16 15 14 13 12 11
OCTAL TRANSPARENT
LATCH WITH
3-STATE OUTPUTS
N SUFFIX
CASE 738-03
PLASTIC
1 2 3 4 5 6 7 8 9 10
OE O0 D0 D1 O1 O2 D2 D3 O3 GND
PIN NAMES
D0–D7
LE
OE
O0–O7
Data Inputs
Latch Enable Input
Output Enable Input
3-State Latch Outputs
TRUTH TABLE
Inputs
Outputs
OE
LE
Dn
On
H
X
X
Z
L
H
L
L
L
H
H
H
L
L
X
O0
H = HIGH Voltage Level
L = LOW Voltage Level
Z = High Impedance
X = Immaterial
O0 = Previous O0 before LOW-to-HIGH Transition of Clock
DW SUFFIX
CASE 751D-04
PLASTIC
LOGIC SYMBOL
D0 D1 D2 D3 D4 D5 D6 D7
LE
OE
O0 O1 O2 O3 O4 O5 O6 O7
FACT DATA
5-1