74F841SPC Fairchild Semiconductor, 74F841SPC Datasheet - Page 2

• Manufacturer Part Number: 74F841SPC
• Description: IC LATCH TRANSP 10BIT 24-DIP
• Manufacturer: Fairchild Semiconductor
• Series: 74Fr

Specifications of 74F841SPC

• Logic Type: D-Type Transparent Latch
• Circuit: 10:10
• Output Type: Tri-State
• Voltage - Supply: 4.5 V ~ 5.5 V
• Independent Circuits: 1
• Delay Time - Propagation: 2.5ns
• Current - Output High, Low: 3mA, 24mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Unit Loading/Fan Out
Functional Description
The 74F841 device consists of ten D-type latches with
3-STATE outputs. The flip-flops appear transparent to the
data when Latch Enable (LE) is HIGH. This allows asyn-
chronous operation, as the output transition follows the
data in transition.
On the LE HIGH-to-LOW transition, the data that meets the
setup and hold 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.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
D
O
OE
LE
0
0
–D
–O
Pin Names
9
9
Data Inputs
3-STATE Outputs
Output Enable Input
Latch Enable
Description
2
Function Table
H
L
X
Z
NC
LOW Voltage Level
HIGH Impedance
HIGH Voltage Level
Immaterial
OE
No Change
X
H
H
H
H
H
L
L
L
L
L
L
HIGH/LOW
1.0/1.0
150/40
1.0/1.0
1.0/1.0
Inputs
U.L.
LE
X
H
H
H
H
X
X
X
L
L
L
L
D
X
H
X
H
X
X
X
X
X
X
L
L
Internal
NC
NC
Q
H
H
H
H
H
X
L
L
L
L
Output I
20 A/ 0.6 mA
20 A/ 0.6 mA
20 A/ 0.6 mA
Input I
3 mA/24 mA
Output
IH
OH
NC
O
H
H
H
Z
Z
Z
Z
Z
Z
L
L
/I
/I
IL
OL
High Z
High Z
High Z
Latched
Transparent
Transparent
Latched
Preset
Clear
Preset
Latched
Latched
Function