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74LS373 手册
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74LS373 Octal Transparent Latch with 3-State Outputs; Octal D-Type Flip-Flop with 3-State Output
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www.fpga-arm.com
Semiconductor Components Industries, LLC, 2001
October, 2001 – Rev. 8
1 Publication Order Number:
SN74LS373/D
SN74LS373, SN74LS374
Octal Transparent Latch
with 3-State Outputs;
Octal D-Type Flip-Flop
with 3-State Output
The SN74LS373 consists of eight latches with 3-state outputs for
bus organized system applications. The flip-flops appear transparent
to the data (data changes asynchronously) when Latch Enable (LE) is
HIGH. When LE is LOW, the data that meets the setup times 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.
The SN74LS374 is a high-speed, low-power Octal D-type Flip-Flop
featuring separate D-type inputs for each flip-flop and 3-state outputs
for bus oriented applications. A buffered Clock (CP) and Output
Enable (OE) is common to all flip-flops. The SN74LS374 is
manufactured using advanced Low Power Schottky technology and is
compatible with all ON Semiconductor TTL families.
•
Eight Latches in a Single Package
•
3-State Outputs for Bus Interfacing
•
Hysteresis on Latch Enable
•
Edge-Triggered D-Type Inputs
•
Buffered Positive Edge-Triggered Clock
•
Hysteresis on Clock Input to Improve Noise Margin
• Input Clamp Diodes Limit High Speed Termination Effects
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage 4.75 5.0 5.25 V
T
A
Operating Ambient
Temperature Range
0 25 70 °C
I
OH
Output Current – High –2.6 mA
I
OL
Output Current – Low 24 mA
LOW
POWER
SCHOTTKY
http://onsemi.com
PDIP–20
N SUFFIX
CASE 738
20
1
20
1
x = 3 or 4
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
SN74LS37xN
AWLYYWW
MARKING
DIAGRAMS
LS37x
AWLYYWW
SOIC–20
DW SUFFIX
CASE 751D
1
1
20
1
SOEIAJ–20
M SUFFIX
CASE 967
74LS37x
AWLYWW
1
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
ORDERING INFORMATION
海纳电子资讯网: www.fpga-arm.com
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