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Part Name
Description
74F189SJX View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
74F189SJX
64-Bit Random Access Memory with 3-STATE Outputs
Fairchild Semiconductor
74F189SJX Datasheet PDF : 7 Pages
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Unit Loading/Fan Out
Pin Names
Description
U.L.
HIGH/LOW
Input I
IH
/I
IL
Output I
OH
/I
OL
A
0
–
A
3
CS
Address Inputs
Chip Select Input (Active LOW)
1.0/1.0
1.0/1.0
20
µ
A/
−
0.6 mA
20
µ
A/
−
1.2 mA
WE
Write Enable Input (Active LOW) 1.0/1.0
20
µ
A/
−
0.6 mA
D
0
–
D
3
O
0
–
O
3
Data Inputs
Inverted Data Outputs
1.0/1.0
20
µ
A/
−
0.6 mA
150/40 (33.3)
−
3.0 mA/24 mA (20 mA)
Function Table
Inputs
CS
WE
L
L
L
H
H
X
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Block Diagram
Operation
Condition of Outputs
Write
Read
Inhibit
High Impedance
Complement of Stored Data
High Impedance
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