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IDT74FCT16260ETPA Datasheet(PDF) 3 Page - Integrated Device Technology

Part # IDT74FCT16260ETPA
Description  FAST CMOS 12-BIT TRI-PORT BUS EXCHANGER
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT74FCT16260ETPA Datasheet(HTML) 3 Page - Integrated Device Technology

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IDT54/74FCT16260AT/CT/ET, 162260AT/CT/ET
FAST CMOS 12-BIT TRI-PORT BUS EXCHANGER
MILITARY AND COMMERCIAL TEMPERATURES RANGES
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 HIGH to 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 HIGH to 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 transfer from 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).
3032 tbl 01
ABSOLUTE MAXIMUM RATINGS
(1)
FUNCTION TABLES
(2)
3032 tbl 04
Inputs
Output
1B
2B
SEL
LE1B
LE2B
OEA
OEA
A
H
X
HHX
L
H
L
X
HHX
L
L
XX
H
L
X
L
A(1)
XH
L
X
H
L
H
XL
L
X
H
L
L
XX
L
X
L
L
A(1)
X
XXXXH
Z
Inputs
Outputs
A
LEA1B LEA2B
OE1B
OE1B OE2B
OE2B
1B
2B
HH
H
L
L
H
H
LH
H
L
L
L
L
H
H
LLL
H
B(1)
L
H
LLL
L
B(1)
HL
HL
L
B(1)
H
LL
H
L
L
B(1)
L
XL
LLL
B(1)
B(1)
X
XXH
H
Z
Z
X
X
X
L
H
Active
Z
X
X
X
H
L
Z
Active
X
X
X
L
L
Active
Active
3032 tbl 05
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
↑ = LOW-to-HIGH Transition
Symbol
Description
Max.
Unit
VTERM(2) Terminal Voltage with Respect to
GND
–0.5 to +7.0
V
VTERM(3) Terminal Voltage with Respect to
GND
–0.5 to
VCC +0.5
V
TSTG
Storage Temperature
–65 to +150
°C
IOUT
DC Output Current
–60 to +120
mA
3032 tbl 02
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-
INGS may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions
above those indicated in the operational sections of this specification is
not implied.
Exposure to absolute maximum rating conditions for
extended periods may affect reliability.
2. All device terminals except FCT162XXXT Output and I/O terminals.
3. Output and I/O terminals for FCT162XXXT.
CAPACITANCE (TA = +25
°C, F = 1.0MHZ)
3032 tbl 03
Symbol
Parameter(1)
Conditions
Typ.
Max.
Unit
CIN
Input
Capacitance
VIN = 0V
3.5
6.0
pF
CI/O
I/O
Capacitance
VOUT = 0V
3.5
8.0
pF
NOTE:
1. This parameter is measured at characterization but not tested.


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