PI74FCT240T/241T/
244T/540T/541T (25 ohmSeries)
PI74FCT2240T/2241T/2244T/2541T
Fast CMOS Octal
Buffer/Line Drivers
ProductFeatures
ProductDescription
Pericom Semiconductors PI74FCT series of logic circuits are
produced in the Companys advanced 0.6/0.8 micron CMOS
technology, achieving industry leading speed grades. All
PI74FCT2XXX devices have a built-in 25 ohm series resistor on
all outputs to reduce noise because of reflections, thus eliminating
the need for an external terminating resistor.
PI74FCT240/241/244/540/541TandPI74FCT2240/2241/2244/
2541T are pin compatible with bipolar FAST Series at a
higher speed and lower power consumption
25Ω series resistor on all outputs (FCT2XXX only)
TTL input and output levels
Low ground bounce outputs
Extremelylowstaticpower
Hysteresis on all inputs
Industrial operating temperature range: 40°C to +85°C
The PI74FCT240T/241T/244T/540T/541T and P174FCT2240T/
2241T/2244/2541T are 8-bit wide driver circuits, designed to be
used in applications requiring high-speed and high-output drive.
Ideal applications would include bus drivers, memory drivers,
address drivers, and system clock drivers.
Packagesavailable:
20-pin173milwideplasticTSSOP(L)
20-pin209milwideplasticSSOP(H)
20-pin300milwideplasticDIP(P)
20-pin150milwideplasticQSOP(Q)
20-pin150milwideplasticTQSOP(R)
20-pin300milwideplasticSOIC(S)
Device models available upon request
The PI74FCT540T and PI74FCT541/2541T provide similar driver
capabilities, but have their pins physically grouped by function.
All inputs are located on one side of the package, while outputs are
on the opposite side, allowing for a much simpler and denser board
layout.
Logic Block Diagrams
PI74FCT240/2240T
PI74FCT241/2241T
PI74FCT244/2244T
PI74FCT540T
PI74FCT541/2541T
OE
A
OE
B
241 Only
OEA
OEA
OEB
OE *
B
D
D
D
0
1
2
O
0
1
2
DA
0
0
OA
0
DA
OB
0
0
OA
0
O
O
OB
DB
0
1
DB
OA
0
1
OA
DA
1
1
DA
OB
1
1
D
3
4
O
O
3
4
OB
DB
1
2
DB
OA
1
2
D
OA
DA
2
2
DA
OB
2
2
OB
D
5
6
O
O
5
6
DB
2
3
DB
OA
2
3
D
OA
DA
3
3
DA
OB
3
3
OB
D7
O
7
DB
3
DB
3
*Logic diagram shown for 540T.
541/2541T is the non-inverting option.
*OEB
for 241T, *OEB for 244T,
PS2011B
12/11/00
1