Integrated Device Technology Inc IDT74FCT541ASOB, IDT74FCT541ASO, IDT74FCT541AP, IDT74FCT541ALB, IDT74FCT541AL Datasheet
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Integrated Device Technology, Inc.
FAST CMOS OCTAL
BUFFER/LINE DRIVER
IDT54/74FCT240/A/C
IDT54/74FCT241/A/C
IDT54/74FCT244/A/C
IDT54/74FCT540/A/C
IDT54/74FCT541/A/C
FEATURES:
• IDT54/74FCT240/241/244/540/541 equivalent to FAST
speed and drive
• IDT54/74FCT240A/241A/244A/540A/541A 25% faster
than FAST
• IDT54/74FCT240C/241C/244C/540C/541C up to 55%
faster than FAST
•IOL = 64mA (commercial) and 48mA (military)
• CMOS power levels (1mW typ. static)
• Product available in Radiation Tolerant and Radiation
Enhanced versions
• Military product compliant to MIL-STD-883, Class B
• Meets or exceeds JEDEC Standard 18 specifications
FUNCTIONAL BLOCK DIAGRAMS
2529 cnv* 01–03
OE
DA
OB
DA
OB
DA
OB
DA
OB
A
OE
0
0
1
1
2
2
3
3
OA
DB
OA
DB
OA
DB
OA
DB
OE
A
B
0
DA
0
0
OB
0
DA
OB
DA
OB
DA
OB
1
1
2
2
3
3
1
1
2
2
3
3
DESCRIPTION:
TM
The IDT octal buffer/line drivers are built using an advanced
dual metal CMOS technology. The IDT54/74FCT240/A/C,
IDT54/74FCT241/A/C and IDT54/74FCT244/A/C are designed
to be employed as memory and address drivers, clock drivers
and bus-oriented transmitter/receivers which provide improved
board density.
The IDT54/74FCT540/A/C and IDT54/74FCT541/A/C are
similar in function to the IDT54/74FCT240/A/C and IDT54/
74FCT244/A/C, 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.
241 Only
OEB*
OA
DB
OA
DB
OA
DB
OA
DB
OE
A
0
0
1
1
2
2
3
3
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
OE
O0*
O1*
O
O
O
O
O
O
B
2
*
3
*
4
*
5
*
6
*
7
*
IDT54/74FCT240
IDT54/74FCT241/244
*OEB for 241, OEB for 244
IDT54/74FCT540/541
*Logic diagram shown for 'FCT540.
'FCT541 is the non-inverting option.
2606 dwg 01–03
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FAST is a trademark of National Semiconductor Co.
MILITARY AND COMMERCIAL TEMPERATURE RANGES MAY 1992
1992 Integrated Device Technology, Inc. 7.8 DSC-4610/3
1
IDT54/74FCT240/241/244/540/541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
IDT54/74FCT240
2529 cnv* 04–09
OEA
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
GND
IDT54/74FCT241/244
20
2
3
4
5
6
7
8
9
P20-1
D20-1
SO20-2
E20-1
19
18
17
16
15
&
14
13
12
10 11
DIP/SOIC/CERPACK
TOP VIEW
VCC1
OE
OA0
DB0
OA1
DB1
OA2
DB2
OA3
DB3
B
INDEX
DA1
OB1
DA2
OB2
DA3
DA0
OB0
OEA
3 2 20 19
4
1
5
6
L20-2
7
8
9 10111213
3
DB
OB3
GND
LCC
TOP VIEW
VCC
OA3
OEB
18
17
16
15
14
DB2
OA0
DB0
OA1
DB1
OA2
OEA
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
GND
*OEB for 241,
OE
B for 244
IDT54/74FCT540/541
OEA
D0
D1
D2
D3
D4
D5
D6
D7
GND
*
O
X for 540, OX for 541
20
2
3
4
5
6
7
8
9
P20-1
D20-1
SO20-2
E20-1
19
18
17
16
15
&
14
13
12
10 11
DIP/SOIC/CERPACK
TOP VIEW
20
2
3
4
5
6
7
8
9
P20-1
D20-1
SO20-2
E20-1
19
18
17
16
15
&
14
13
12
10 11
DIP/SOIC/CERPACK
TOP VIEW
VCC1
OE
OA
DB0
OA1
DB1
OA2
DB2
OA3
DB3
CC1
V
OE
O0*
1*
O
2*
O
3*
O
4*
O
5*
O
6*
O
O7*
INDEX
VCC
DA0
OB0
B*
0
DA1
OB1
DA2
OB2
DA3
3 2 20 19
4
1
5
6
L20-2
7
8
OEB*
OEA
18
OA0
17
DB0
OA1
16
DB1
15
OA2
14
9 10111213
3
3
DB
OA3
OB
GND
DB2
LCC
TOP VIEW
INDEX
D1
D0
VCC
OEA
B
3 2 20 19
D2 O0*
D
D4
D5
D6
4
3
5
6
7
8
1
L20-2
OEB
18
17
16
15
14
1*
O
O
2*
3*
O
O
4*
9 10111213
7
D
GND
6*
5*
O7*
O
O
LCC
TOP VIEW
2606 cnv* 04–09
7.8 2
IDT54/74FCT240/241/244/540/541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION FUNCTION TABLE
Pin Names Description
OE
A, OEB 3–State Output Enable Inputs (Active LOW)
(1)
OEB
3–State Output Enable Input (Active HIGH)
Dxx Inputs
Oxx Outputs
NOTE: 2606 tbl 04
1. OEB for 241 only.
(1)
OE
OE
Inputs
A
OE
B
OE
OE
(2)
B
D 240 241 244 540 541
Outputs
LLHLHL
LLHHLHHLH
HHLXZZZZZ
NOTES:
1. H = High Voltage Level
X = Don’t Care
L = Low Voltage Level
Z = High Impedance
2. OE
B for 241 only.
(1)
LHL
2606 tbl 05
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol Rating Commercial Military Unit
(2)
V
TERM
Terminal Voltage
–0.5 to +7.0 –0.5 to +7.0 V
with Respect to
GND
(3)
V
TERM
Terminal Voltage
–0.5 to V
CC
–0.5 to V
CC
V
with Respect to
GND
T
A
Operating
0 to +70 –55 to +125°C
Temperature
T
BIAS
Temperature
–55 to +125 –65 to +135°C
Under Bias
T
STG
Storage
–55 to +125 –65 to +150°C
Temperature
P
I
OUT
T
Power Dissipation 0.5 0.5 W
DC Output
120 120 mA
Current
NOTES: 2606 tbl 01
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
2. Input and V
3. Outputs and I/O terminals only.
CC by +0.5V unless otherwise noted.
CC terminals only.
CAPACITANCE (TA = +25°C, f = 1.0MHz)
Symbol Parameter
C
IN
Input
Capacitance
C
OUT
Output
Capacitance
NOTE: 2606 tbl 02
1. This parameter is measured at characterization but not tested.
(1)
Conditions Typ. Max. Unit
VIN = 0V 6 10 pF
V
OUT
= 0V 8 12 pF
7.8 3
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