CY54FCT240T, CY74FCT240T
8-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCCS017A – MAY 1994 – REVISED OCTOBER 2001
CY54FCT240T . . . D PACKAGE
CY74FCT240T . . . Q OR SO PACKAGE
(TOP VIEW)
Function, Pinout, and Drive Compatible
With FCT and F Logic
Reduced V
of Equivalent FCT Functions
(Typically = 3.3 V) Versions
OH
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
V
CC
A
DA
OB
DA
OB
DA
OB
DA
OB
OE
OA
DB
Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
0
0
1
1
2
2
3
3
B
0
0
OA
1
1
I
Supports Partial-Power-Down Mode
off
DB
Operation
OA
2
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
DB
2
OA
3
3
GND
DB
– 1000-V Charged-Device Model (C101)
Matched Rise and Fall Times
CY54FCT240T . . . L PACKAGE
(TOP VIEW)
Fully Compatible With TTL Input and
Output Logic Levels
CY54FCT240T
– 48-mA Output Sink Current
12-mA Output Source Current
3
2
1 20 19
18
OA
DB
DA
OB
DA
OB
DA
4
5
6
7
8
0
1
1
2
2
3
CY74FCT240T
– 64-mA Output Sink Current
32-mA Output Source Current
17
16
15
14
0
OA
1
1
DB
3-State Outputs
OA
2
9 10 11 12 13
description
The ’FCT240T devices are octal buffers and line
drivers designed to be employed as memory
address
drivers,
clock
drivers,
and
bus-oriented transmitters/receivers. These devices provide speed and drive capabilities equivalent to their
fastest bipolar logic counterparts, while reducing power consumption. The input and output voltage levels allow
direct interface with TTL, NMOS, and CMOS devices without external components.
These devices are fully specified for partial-power-down applications using I . The I circuitry disables the
off
off
outputs, preventing damaging current backflow through the device when it is powered down.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2001, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
unless otherwise noted. On all other products, production
testing of all parameters.
processing does not necessarily include testing of all parameters.
1
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