IDT74FCT16244T Datasheet, PDF (1/9 Pages) Integrated Device Technology – FAST CMOS 16-BIT BUFFER/LINE DRIVER

Integrated Device Technology, Inc.
FAST CMOS 16-BIT
BUFFER/LINE DRIVER
IDT54/74FCT16244T/AT/CT/ET
IDT54/74FCT162244T/AT/CT/ET
IDT54/74FCT166244T/AT/CT
IDT54/74FCT162H244T/AT/CT/ET
FEATURES:
DESCRIPTION:
• Common features:
The 16-Bit Buffer/Line Driver is for bus interface or signal buffering
– 0.5 MICRON CMOS Technology
applications requiring high speed and low power dissipation. These
– High-speed, low-power CMOS replacement for
devices have a flow through pin organization, and shrink packaging
ABT functions
to simplify board layout. All inputs are designed with hysteresis for
– Typical tSK(o) (Output Skew) < 250ps
improved noise margin. The three-state controls allow independent
– Low input and output leakage ≤ 1µA (max.)
4-bit, 8-bit or combined 16-bit operation. These parts are plug in
– ESD > 2000V per MIL-STD-883, Method 3015;
replacements for 54/74ABT16244 where higher speed, lower noise
> 200V using machine model (C = 200pF, R = 0)
or lower power dissipation levels are desired.
– Packages include 25 mil pitch SSOP, 19.6 mil pitch
The FCT16244T/AT/CT/ET are ideally suited for driving
TSSOP, 15.7 mil pitch TVSOP and 25 mil pitch Cerpack ^{high capacitance loads (>200pF) and low impedance}
– Extended commercial range of -40°C to +85°C
backplanes. These "high drive" buffers are designed with
• Features for FCT16244T/AT/CT/ET:
power off disable capability to allow "live insertion" of boards
– High drive outputs (-32mA IOH, 64mA IOL)
when used in a backplane interface.
– Power off disable outputs permit “live insertion”
The FCT162244T/AT/CT/ET have balanced output current
– Typical VOLP (Output Ground Bounce) < 1.0V at
levels and current limiting resistors. These offer low ground
VCC = 5V, TA = 25°C
bounce, minimal undershoot, and controlled output fall times,
• Features for FCT162244T/AT/CT/ET:
reducing the need for external series terminating resistors
– Balanced Output Drivers: ±24mA (commercial),
while still providing very high speed operation for loads of less
±16mA (military)
than 200pF.
– Reduced system switching noise
The FCT166244T/AT/CT are suited for very low noise,
– Typical VOLP (Output Ground Bounce) < 0.6V at
point-to-point driving where there is a single receiver, or a very
VCC = 5V,TA = 25°C
light lumped load (<100pF). The buffers are designed to limit
• Features for FCT166244T/AT/CT:
the output current to levels which will avoid noise and ringing
– Light Drive Balanced Output: ±8mA (commercial),
on the signal lines without using external series terminating
±6mA (military)
resistors.
– Minimal system switching noise
The FCT162H244T/AT/CT/ET have "Bus-Hold" which re-
– Typical VOLP (Output Ground Bounce) < 0.25V at
tains the input's last state whenever the input goes to high
VCC = 5V,TA = 25°C
impedance. This prevents "floating" inputs and eliminates the
• Features for FCT162H244T/AT/CT/ET:
need for pull-up/down resistors.
– Bus-Hold retains last active bus state during 3-state
– Eliminates the need for external pull up resistors
FUNCTIONAL BLOCK DIAGRAM
1OE
3OE
1A1
1Y1
3A1
3Y1
1A2
1Y2
3A2
3Y2
1A3
1Y3
3A3
3Y3
1A4
1Y4
3A4
3Y4
2OE
2A1
2Y1
2A2
2Y2
2A3
2Y3
2A4
2Y4
The IDT logo is a registered trademark of Integrated Device Technology, Inc. ^{2544 drw 01}
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996 Integrated Device Technology, Inc.
5.2
4OE
4A1
4A2
4A3
4A4
4Y1
4Y2
4Y3
4Y4
2544 drw 02
OCTOBER 1996
DSC-2544/9
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