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參數(shù)資料
| 型號(hào)： | TC74ACT245P |
| 廠商： | Toshiba Corporation |
| 英文描述： | OCTAL BUS TRANSCEIVER |
| 中文描述： | 八進(jìn)制總線收發(fā)器 |
| 文件頁(yè)數(shù)： | 2/11頁(yè) |
| 文件大?。?/td> | 198K |
| 代理商： | TC74ACT245P |
TC51WHM516AXBN65,70
2002-08-22 2/11
BLOCK DIAGRAM
OPERATION MODE
MODE
CE1
CE2
OE
WE
LB
UB
Add
I/O1 to I/O8
I/O9 to I/O16
POWER
Read(Word)
Read(Lower Byte)
Read(Upper Byte)
Write(Word)
Write(Lower Byte)
Write(Upper Byte)
Outputs Disabled
Standby
Deep Power-down Standby
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
L
L
L
L
X
X
X
H
X
X
H
H
H
L
L
L
H
X
X
L
L
H
L
L
H
X
X
X
L
H
L
L
H
L
X
X
X
X
X
X
X
X
X
X
X
X
D
OUT
D
OUT
High-Z
D
IN
D
IN
Invalid
High-Z
High-Z
High-Z
D
OUT
High-Z
D
OUT
D
IN
Invalid
D
IN
High-Z
High-Z
High-Z
I
DDO
I
DDO
I
DDO
I
DDO
I
DDO
I
DDO
I
DDO
I
DDS
I
DDSD
Notes: L
=
Low-level Input(V
IL
), H
=
High-level Input(V
IH
), X
=
V
IH
or V
IL
, High-Z
=
High-impedance
V
DD
GND
I/O1
I/O2
I/O3
I/O4
CE
I/O8
CE
I/O9
I/O10
I/O16
OE
UB
LB
A0
A1
A2 A3
A4
A5
CE2
MEMORY CELL ARRAY
4,096
×
512
×
16
(33,554,432)
CONTROL SIGNAL
GENERATOR
SENSE AMP
A6
D
B
D
B
D
B
D
B
CE
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
R
B
COLUMN ADDRESS
DECODER
R
D
COLUMN ADDRESS
BUFFER
I/O5
I/O6
I/O7
I/O15
I/O14
I/O13
I/O12
I/O11
A7
A8
REFRESH
CONTROL
REFRESH
ADDRESS
COUNTER
WE
CE1
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