IDT74FCT16543AT/CT/ET
FAST CMOS 16-BIT LATCHED TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
FAST CMOS
16-BIT LATCHED
TRANSCEIVER
IDT74FCT16543AT/CT/ET
FEATURES:
DESCRIPTION:
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The FCT16543T 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 transceivers with
separate input and output control to permit independent control of data flow
in either direction. For example, the A-to-B Enable (xCEAB) must be low
in order to enter data from the A port or to output data from the B port. xLEAB
controls the latch function. When xLEAB is low, the latches are transparent.
A subsequent low-to-high transition of xLEAB signal puts the A latches in
the storage mode. xOEAB performs output enable function on the B port.
Data flow from the B port to the A port is similar but requires using xCEBA,
xLEBA, and xOEBA inputs. Flow-through organization of signal pins
simplifies layout. All inputs are designed with hysteresis for improved noise
margin.
The FCT16543T is 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.
0.5 MICRON CMOS Technology
High-speed, low-power CMOS replacement for ABT functions
Typical tSK(o) (Output Skew) < 250ps
Low input and output leakage ≤1µA (max.)
VCC = 5V ±10%
High drive outputs (–32mA IOH, 64mA IOL)
Power off disable outputs permit “live insertion”
Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V,
TA = 25°C
• Available in SSOP, TSSOP, and TVSOP packages
FUNCTIONAL BLOCK DIAGRAM
1 OEBA
1 CEBA
1 LEBA
1 OEAB
1 CEAB
1 LEAB
56
2 OEBA
29
54
2 CEBA
31
55
2 LEBA
1
2 OEAB
3
2 CEAB
2
2 LEAB
30
28
26
27
C
C
1A 1
5
2A 1
D
52
15
1B 1
42
D
C
C
D
2B 1
D
TO SEVEN OTHER CHANNELS
TO SEVEN OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
JULY 2002
1
© 2002 Integrated Device Technology, Inc.
DSC-5444/4
