鈭?/div>
CMOS power levels: <7.5mW static
Undershoot clamp diodes on all inputs
True TTL input and output compatibility
Ground bounce controlled outputs
Reduced output swing of 0 to 3.5V
Built-in 25鈩?series resistor outputs reduce reflection and other
system noise
Std., A, and C speed grades with 4.1ns t
PD
for C
I
OL
= 12mA
Available in SOIC and QSOP packages
IDTQS74FCT2240T/AT/CT
DESCRIPTION:
The IDTQS74FCT2240T is an 8-bit buffer/line driver with three-state
outputs and a 25鈩?resistor at the output, useful for driving transmission lines
and reducing system noise. The 2240 series part can replace the 240 series
to reduce noise in an existing design. All inputs have clamp diodes for
undershoot noise suppression. All outputs have ground bounce suppres-
sion. Outputs will not load an active bus when Vcc is removed from the
device.
FUNCTIONAL BLOCK DIAGRAM
1
G
1
2
G
19
1
A
1
2
18
1
Y
1
2
A
1
11
9
2
Y
1
1
A
2
4
16
1
Y
2
2
A
2
13
7
2
Y
2
1
A
3
6
14
1
Y
3
2
A
3
15
5
2
Y
3
1
A
4
8
12
1
Y
4
2
A
4
17
3
2
Y
4
INDUSTRIAL TEMPERATURE RANGE
1
c
2001 Integrated Device Technology, Inc.
JANUARY 2001
DSC-5396/2