Integrated Device Technology Inc IDT74FCT540TSOB, IDT74FCT541TLB, IDT74FCT541TL, IDT74FCT541TEB, IDT74FCT541TE Datasheet
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IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES
6.8 1
Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES DECEMBER 1995
1996 Integrated Device Technology, Inc. 6.8 DSC-2565/6
1
DESCRIPTION:
The IDT octal buffer/line drivers are built using an advanced
dual metal CMOS technology. The FCT240T/FCT2240T and
FCT244T/FCT2244T are designed to be employed as memory
and address drivers, clock drivers and bus-oriented transmitter/receivers which provide improved board density.
The FCT540T and FCT541T/FCT2541T are similar in
function to the FCT240T/FCT2240T and FCT244T/FCT2244T,
respectively, except that the inputs and outputs are on opposite sides of the package. This pinout arrangement makes
these devices especially useful as output ports for microprocessors and as backplane drivers, allowing ease of layout and
greater board density.
The FCT2240T, FCT2244T and FCT2541T have balanced
output drive with current limiting resistors. This offers low
ground bounce, minimal undershoot and controlled output fall
times-reducing the need for external series terminating resistors. FCT2xxxT parts are plug-in replacements for FCTxxxT
parts.
FAST CMOS OCTAL
BUFFER/LINE
DRIVERS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
IDT54/74FCT240T/AT/CT/DT - 2240T/AT/CT
IDT54/74FCT244T/AT/CT/DT - 2244T/AT/CT
IDT54/74FCT540T/AT/CT
IDT54/74FCT541/2541T/AT/CT
FEATURES:
• Common features:
– Low input and output leakage ≤1µA (max.)
– CMOS power levels
– True TTL input and output compatibility
– VOH = 3.3V (typ.)
– V
OL = 0.3V (typ.)
– Meets or exceeds JEDEC standard 18 specifications
– Product available in Radiation Tolerant and Radiation
Enhanced versions
– Military product compliant to MIL-STD-883, Class B
and DESC listed (dual marked)
– Available in DIP, SOIC, SSOP, QSOP, CERPACK
and LCC packages
• Features for FCT240T/FCT244T/FCT540T/FCT541T:
– Std., A, C and D speed grades
– High drive outputs (-15mA IOH, 64mA IOL)
• Features for FCT2240T/FCT2244T/FCT2541T:
– Std., A and C speed grades
– Resistor outputs (-15mA IOH, 12mA IOL Com.)
(-12mA IOH, 12mA IOL Mil.)
– Reduced system switching noise
2565 drw 03
2565 drw 02
2565 drw 01
DA0
DA1
DA2
DA3
DB0
DB1
DB2
DB3
FCT240/2240T
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
OA0
DB0
OA1
DB1
DB2
DB3
OA2
OA3
FCT244/2244T
D0 O0
D1
D2
D3
D4
D5
D6
D7
O1
O2
O3
O4
O5
O6
O7
FCT540/541/2541T
*Logic diagram shown for 'FCT540.
'FCT541/2541T is the non-inverting option.
OE
A
OE
B
OE
A
OE
B
OE
A
OB
0
OB
1
OB
2
OB3
OE
B
OA
0
OA
1
OA
2
OA
3
FUNCTIONAL BLOCK DIAGRAMS
IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES
6.8 2
PIN CONFIGURATIONS
FCT240/2240T
FCT244/2244T
2565 drw 08
2565 drw 04
2565 drw 07
DA0
DA1
DA2
DA3
GND
DB
0
DB1
DB2
DB3
VCC1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
P20-1
D20-1
SO20-2
SO20-7
SO20-8
&
E20-1
INDEX
DA1
DA2
DA3
DB0
DB1
DA0
OB0
OEA
VCC
OEB
OB3
GND
DB
3
OA3
DB2
LCC
TOP VIEW
3 2 20 19
1
4
5
6
7
8
18
17
16
15
14
9 10111213
L20-2
OEA
OB0
OB1
OB2
OB3
OEB
OA0
OA1
OA2
OA3
OB1
OB2
OA0
OA1
OA2
DA
0
OB
0
DA
1
OB
1
DA
2
OB
2
DA
3
OB
3
GND
OA
0
DB
0
OA
1
DB
1
DB
2
DB
3
OA
2
OA
3
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
P20-1
D20-1
SO20-2
SO20-7
SO20-8
&
E20-1
INDEX
DA
1
OB
1
DA
2
OB
2
DA
3
OA
0
DB
0
OA
1
DB
1
OA
2
DA
0
OB
0
V
CC
OE
B
*
OB
3
GND
DB
3
OA
3
DB
2
LCC
TOP VIEW
3 2 20 19
1
4
5
6
7
8
18
17
16
15
14
910 1213
L20-2
11
OE
B
OE
A
OE
A
2565 drw 05
FCT540/541/2541T
D0
D2
D3
D4
D5
D6
D7
GND
O
0*
O
1*
O
2*
O
3*
O
5*
O
7*
O
4*
O
6*
V
CC1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DIP/SOIC/QSOP/CERPACK
TOP VIEW
P20-1
D20-1
SO20-2
SO20-8
&
E20-1
INDEX
D2
D3
D4
D5
D6
O0*
O
1*
O
2*
O
3*
O
4*
LCC
TOP VIEW
3 2 20 19
1
4
5
6
7
8
18
17
16
15
14
9 10111213
L20-2
D1
D0
VCC
D7
GND
O
7*O6*O5*
OEA
OEA
OEB
OEB
D1
2565 drw 06 2565 drw 09
*Ox for 540, Ox for 541/2541T
IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES
6.8 3
PIN DESCRIPTION FUNCTION TABLE
ABSOLUTE MAXIMUM RATINGS
(1)
CAPACITANCE (TA = +25°C, f = 1.0MHz)
Symbol Rating Commercial Military Unit
VTERM
(2)
Terminal Voltage
with Respect to
GND
–0.5 to +7.0 –0.5 to +7.0 V
VTERM
(3)
Terminal Voltage
with Respect to
GND
–0.5 to
V
CC +0.5
–0.5 to
VCC +0.5
V
TA Operating
Temperature
0 to +70 –55 to +125 °C
TBIAS Temperature
Under Bias
–55 to +125 –65 to +135 °C
TSTG Storage
Temperature
–55 to +125 –65 to +150 °C
PT Power Dissipation 0.5 0.5 W
IOUT DC Output
Current
–60 to +120 –60 to +120 mA
2565 lnk 03
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions
above those indicated in the operational sections of this specification is
not implied. Exposure to absolute maximum rating conditions for
extended periods may affect reliability. No terminal voltage may exceed
V
CC by +0.5V unless otherwise noted.
2. Input and V
CC terminals only.
3. Outputs and I/O terminals only.
NOTES:
2565 tbl 02
1. H = High Voltage Level
X = Don’t Care
L = Low Voltage Level
Z = High Impedance
Symbol Parameter
(1)
Conditions Typ. Max. Unit
CIN Input
Capacitance
VIN = 0V 6 10 pF
COUT Output
Capacitance
VOUT = 0V 8 12 pF
2565 lnk 04
NOTE:
1. This parameter is measured at characterization but not tested.
Pin Names Description
OE
A, OEB 3–State Output Enable Inputs (Active LOW)
Dxx Inputs
Oxx Outputs
2565 tbl 01
Inputs
(1)
Outputs
(1)
OE
OE
A
OE
OE
B D 240 244 540 541
LLLHLHL
LLHLHLH
H H X ZZZZ
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