HD74AC670 View Datasheet(PDF) - Hitachi -> Renesas Electronics
Part Name
Description
MFG CO.
HD74AC670 Datasheet PDF : 10 Pages
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HD74AC670
Logic Symbol
12 15 1 2 3
WE D1 D2 D3 D4
14
WA0
13
WA1
5
RA0
4
RA0
OE O1 O2 O3 O4
11 10 9 7 6
VCC=Pin 16
GND=Pin 8
Pin Names
D1 to D4
WA0, WA1
WE
RA0, RA1
OE
O1 to O4
Data Inputs
Write Address Inputs
Write Enable Input (Active Low)
Read Address Inputs
3-State Output Enable Input (Active Low)
Data Outputs
Write Function Table
Write Inputs
WE
WA1
L
L
L
L
L
H
L
H
H
X
H : High Voltage Level
L : Low Voltage Level
X : Immaterial
WA0
L
H
L
H
X
D Inputs to
Word 0
Word 1
Word 2
Word 3
None (hold)
2
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