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IDT54FCT162260CTPVB Datasheet

  • IDT54FCT162260CTPVB

  • FAST CMOS 12-BIT TRI-PORT BUS EXCHANGER

  • 8頁(yè)

  • IDT

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FAST CMOS
12-BIT TRI-PORT
BUS EXCHANGER
Integrated Device Technology, Inc.
IDT54/74FCT16260AT/CT/ET
IDT54/74FCT162260AT/CT/ET
FEATURES:
鈥?Common features:
鈥?0.5 MICRON CMOS Technology
鈥?High-speed, low-power CMOS replacement for
ABT functions
鈥?/div>
Typical t
SK
(o) (Output Skew) < 250ps
鈥?Low input and output leakage
鈮?碌A(chǔ)
(max.)
鈥?ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
鈥?Packages include 25 mil pitch SSOP, 19.6 mil pitch
TSSOP, 15.7 mil pitch TVSOP and 25 mil pitch Cerpack
鈥?Extended commercial range of -40擄C to +85擄C
鈥?V
CC
= 5V
鹵10%
鈥?Features for FCT16260AT/CT/ET:
鈥?High drive outputs (-32mA I
OH
, 64mA I
OL
)
鈥?Power off disable outputs permit 鈥渓ive insertion鈥?/div>
鈥?Typical V
OLP
(Output Ground Bounce) < 1.0V at
V
CC
= 5V, T
A
= 25擄C
鈥?Features for FCT162260AT/CT/ET:
鈥?Balanced Output Drivers:
鹵24mA
(commercial),
鹵16mA
(military)
鈥?Reduced system switching noise
鈥?Typical V
OLP
(Output Ground Bounce) < 0.6V at
V
CC
= 5V,T
A
= 25擄C
DESCRIPTION:
The FCT16260AT/CT/ET and the FCT162260AT/CT/ET
Tri-Port Bus Exchangers are high-speed 12-bit latched bus
multiplexers/transceivers for use in high-speed microproces-
sor applications. These Bus Exchangers support memory
interleaving with latched outputs on the B ports and address
multiplexing with latched inputs on the B ports.
The Tri-Port Bus Exchanger has three 12-bit ports. Data
may be transferred between the A port and either/both of the
B ports. The latch enable (LE1B, LE2B, LEA1B and LEA2B)
inputs control data storage. When a latch-enable input is
HIGH, the latch is transparent. When a latch-enable input is
LOW, the data at the input is latched and remains latched until
the latch enable input is returned HIGH. Independent output
enables (
OE1B
and
OE2B
) allow reading from one port while
writing to the other port.
The FCT16260AT/CT/ET are ideally suited for driving high
capacitance loads and low impedance backplanes. The
output buffers are designed with power off disable capability
to allow "live insertion" of boards when used as backplane
drivers.
The FCT162260AT/CT/ET have balanced output drive
with current limiting resistors. This offers low ground bounce,
minimal undershoot, and controlled output fall times - reduc-
ing the need for external series terminating resistors.
FUNCTIONAL BLOCK DIAGRAM
OE1B
LEA1B
A-1B
LATCH
1B
1:12
12
LE1B
12
SEL
OEA
A
1:12
12
M1
U
X0
12
12
1B-A
LATCH
12
12
LE2B
2B-A
LATCH
12
LEA2B
OE2B
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
A-2B
LATCH
12
2B
1:12
3032 drw 01
MILITARY AND COMMERCIAL TEMPERATURE RANGES
漏1996
Integrated Device Technology, Inc.
AUGUST 1996
DSC-3032/6
5.4
1

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