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IDT74FCT16543AT

Description
FAST CMOS 16-BIT LATCHED TRANSCEIVER
File Size83KB,8 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Download Datasheet View All

IDT74FCT16543AT Overview

FAST CMOS 16-BIT LATCHED TRANSCEIVER

FAST CMOS
16-BIT LATCHED
TRANSCEIVER
Integrated Device Technology, Inc.
IDT54/74FCT16543T/AT/CT/ET
IDT54/74FCT162543T/AT/CT/ET
FEATURES:
• Common features:
– 0.5 MICRON CMOS Technology
– High-speed, low-power CMOS replacement for
ABT functions
Typical t
SK
(o) (Output Skew) < 250ps
– Low input and output leakage
≤1µA
(max.)
– ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
– Packages include 25 mil pitch SSOP, 19.6 mil pitch
TSSOP, 15.7 mil pitch TVSOP and 25 mil pitch Cerpack
– Extended commercial range of -40°C to +85°C
– V
CC
= 5V
±10%
• Features for FCT16543T/AT/CT/ET:
– High drive outputs (-32mA I
OH
, 64mA I
OL
)
– Power off disable outputs permit “live insertion”
– Typical V
OLP
(Output Ground Bounce) < 1.0V at
V
CC
= 5V, T
A
= 25°C
• Features for FCT162543T/AT/CT/ET:
– Balanced Output Drivers:
±24mA
(commercial),
±16mA
(military)
– Reduced system switching noise
– Typical V
OLP
(Output Ground Bounce) < 0.6V at
V
CC
= 5V,T
A
= 25°C
DESCRIPTION:
The FCT16543T/AT/CT/ET and FCT162543T/AT/CT/ET
16-bit latched transceivers are built using advanced dual metal
CMOS technology. These high-speed, low-power devices are
organized as two independent 8-bit D-type latched transceiv-
ers with separate input and output control to permit indepen-
dent control of data flow in either direction. For example, the A-
to-B Enable (x
CEAB
) must be LOW in order to enter data from
the A port or to output data from the B port. x
LEAB
controls the
latch function. When x
LEAB
is LOW, the latches are transpar-
ent. A subsequent LOW-to-HIGH transition of x
LEAB
signal
puts the A latches in the storage mode. x
OEAB
performs output
enable function on the B port. Data flow from the B port to the
A port is similar but requires using x
CEBA
, x
LEBA
, and x
OEBA
inputs. Flow-through organization of signal pins simplifies
layout. All inputs are designed with hysteresis for improved
noise margin.
The FCT16543T/AT/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 FCT162543T/AT/CT/ET have balanced output drive
with current limiting resistors. This offers low ground bounce,
minimal undershoot, and controlled output fall times–reducing
the need for external series terminating resistors. The
FCT162543T/AT/CT/ET are plug-in replacements for the
FCT16543T/AT/CT/ET and 54/74ABT16543 for on-board bus
interface applications.
FUNCTIONAL BLOCK DIAGRAM
1
OEBA
1
CEBA
1
LEBA
1
OEAB
1
CEAB
1
LEAB
2
OEBA
2
CEBA
2
LEBA
2
OEAB
2
CEAB
2
LEAB
C
1
A
1
2
A
1
C
1
B
1
D
C
D
D
C
D
2
B
1
TO 7 OTHER CHANNELS
2618 drw 01
TO 7 OTHER CHANNELS
2618 drw 02
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996
Integrated Device Technology, Inc.
SEPTEMBER 1996
DSC-2618/7
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