參數(shù)資料
型號: IDT74FCT162260CTPFG
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 總線收發(fā)器
英文描述: FCT SERIES, 12-BIT EXCHANGER, TRUE OUTPUT, PDSO56
封裝: TVSOP-56
文件頁數(shù): 3/8頁
文件大?。?/td> 116K
代理商: IDT74FCT162260CTPFG
3
IDT54/74FCT162260AT/CT
FAST CMOS 12-BIT TRI-PORT BUS EXCHANGER
MILITARYANDINDUSTRIALTEMPERATURERANGES
FUNCTION TABLES(1)
Inputs
Output
1B
2B
SEL
LE1B
LE2B
OEA
A
HX
H
X
L
H
LX
H
X
L
XX
H
L
X
L
A(1)
XH
L
X
H
L
H
XL
L
X
H
L
XX
L
X
L
A(1)
XX
X
H
Z
Inputs
Outputs
A
LEA1B LEA2B
OE1B
OE2B
1B
2B
HH
H
L
H
LH
H
L
HH
L
H
B(1)
LH
L
B(1)
HL
H
L
B(1)
H
LL
H
L
B(1)
L
XL
L
B(1)
X
XXH
H
Z
XX
X
L
H
Active
Z
X
XXH
L
Z
Active
X
L
Active
PIN DESCRIPTION
Signal
I/O
Description
A(1:12)
I/O
Bidirectional Data Port A. Usually connected to the CPU's Address/Data bus.
1B(1:12)
I/O
Bidirectional Data Port 1B. Connected to the even path or even bank of memory.
2B(1:12)
I/O
Bidirectional Data Port 2B. Connected to the odd path or odd bank of memory.
LEA1B
I
Latch Enable Input for A-1B Latch. The Latch is open when LEA1B is HIGH. Data from the A-port is latched on the HIGH to LOW transition
of LEA1B.
LEA2B
I
Latch Enable Input for A-2B Latch. The Latch is open when LEA2B is HIGH. Data from the A-Port is latched on the HIGH to LOW transition
of LEA2B.
LE1B
I
Latch Enable Input for the 1B-A Latch. The Latch is open when LE1B is HIGH. Data from the 1B port is latched on the HIGHto LOW transition
of LE1B.
LE2B
I
Latch Enable Input for the 2B-A Latch. The Latch is open when LE2B is HIGH. Data from the 2B port is latched on the HIGHto LOW transition
of LE2B.
SEL
I
1B or 2B Path Selection. When HIGH, SEL enables data transfer from 1B Port to A Port. When LOW, SEL enables data transferfrom 2B Port
to A Port.
OEA
I
Output Enable for A Port (Active LOW).
OE1B
I
Output Enable for 1B Port (Active LOW).
OE2B
I
Output Enable for 2B Port (Active LOW).
NOTES:
1. Output level before the indicated steady-state input conditions were
established.
2. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-Impedance
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