Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modi鏗乪d to remove devices not offered.
CY74FCT2240T
CY74FCT2244T
SCCS036 - September 1994 - Revised March 2000
8-Bit Buffers/Line Drivers
Functional Description
The FCT2240T and FCT2244T are octal buffers and line
drivers that include on-chip 25鈩?terminating resistors at each
of the outputs, to minimize noise resulting from re鏗俥ctions or
standing waves in high-performance applications. The on-chip
resistors reduce overall board space and component count.
Designed to be employed as memory address drivers, clock
drivers, and bus-oriented transmitters/receivers, these devic-
es provide speed and drive capabilities commensurate with
their fastest bipolar logic counterparts while reducing power
dissipation. The input and output voltage levels allow direct
interface with TTL, NMOS, and CMOS devices without the
need for external components.
The outputs are designed with a power-off disable feature to
allow for live insertion of boards.
Features
鈥?/div>
Function and pinout compatible with FCT and F logic
鈥?/div>
25鈩?output series resistors to reduce transmission line
re鏗俥ction noise
鈥?/div>
FCT-C speed at 4.1 ns max. (Com鈥檒) FCT-A speed at 4.8
ns max. (Com鈥檒)
鈥?/div>
TTL output level versions of equivalent FCT functions
鈥?/div>
Edge-rate control circuitry for signi鏗乧antly improved
noise characteristics
鈥?/div>
Power-off disable feature permits live insertion
鈥?/div>
ESD > 2000V
鈥?/div>
Fully compatible with TTL input and output logic levels
鈥?Sink current 12 mA
Source current15 mA
鈥?Extended commercial temp. range of 鈥?0藲C to +85藲C
鈥?Three-state outputs
Logic Block Diagram FCT2240T
OE
A
OE
B
DA
0
OB
0
DA
1
OB
1
DA
2
OB
2
DA
3
OB
3
OA
0
DB
0
OA
1
DB
1
OA
2
DB
2
OA
3
DB
3
FCT2240T
鈥?
Pin Configurations
SOIC/QSOP
Top View
OE
A
DA
0
OB
0
DA
1
OB
1
DA
2
OB
2
DA
3
OB
3
GND
1
2
3
4
20
19
18
17
V
CC
OE
B
OA
0
DB
0
OA
1
DB
1
OA
2
DB
2
OA
3
DB
3
FCT2240T鈥?
5 FCT2240T 16
6
7
8
9
10
15
14
13
12
11
Logic Block Diagram FCT2244T
OE
A
OE
B
DA
0
OB
0
DA
1
OB
1
DA
2
OB
2
DA
3
OB
3
OA
0
DB
0
OA
1
DB
1
OA
2
DB
2
OA
3
DB
3
FCT2240T
鈥?
OE
A
DA
0
OB
0
DA
1
OB
1
DA
2
OB
2
DA
3
OB
3
GND
DIP/SOIC/QSOP
Top View
1
2
3
4
6
7
8
9
10
20
19
18
17
15
14
13
12
11
V
CC
OE
B
OA
0
DB
0
OA
1
DB
1
OA
2
DB
2
OA
3
DB
3
5 FCT2244T 16
FCT2240T
鈥?
Copyright
漏
2000, Texas Instruments Incorporated
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