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 |
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FAST CMOS OCTAL |
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BUFFER/LINE DRIVER |
FAST CMOS OCTAL |
MILITARY AND COMMERCIAL TEMPERATURE RANGES |
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IDT54/74FCT240T/AT/CT/DT - 2240T/AT/CT |
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BUFFER/LINE |
IDT54/74FCT244T/AT/CT/DT - 2244T/AT/CT |
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IDT54/74FCT540T/AT/CT |
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DRIVERS |
IDT54/74FCT541/2541T/AT/CT |
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Integrated Device Technology, Inc.
FEATURES:
•Common features:
–Low input and output leakage ≤1μA (max.)
–CMOS power levels
–True TTL input and output compatibility
–VOH = 3.3V (typ.)
–VOL = 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
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Resistor outputs (-15mA IOH, 12mA IOL Com.) |
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(-12mA IOH, 12mA IOL Mil.) |
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Reduced system switching noise |
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.
FUNCTIONAL BLOCK DIAGRAMS
OEA |
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OEA |
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OEA |
OEB |
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OEB |
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OEB |
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DA0 |
OA0 |
DA0 |
OA0 |
D0 |
O0 |
OB0 |
DB0 |
OB0 |
DB0 |
D1 |
O1 |
DA1 |
OA1 |
DA1 |
OA1 |
D2 |
O2 |
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OB1 |
DB1 |
OB1 |
DB1 |
D3 |
O3 |
DA2 |
OA2 |
DA2 |
OA2 |
D4 |
O4 |
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OB |
DB2 |
OB2 |
DB2 |
D5 |
O5 |
2 |
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DA3 |
OA3 |
DA3 |
OA3 |
D6 |
O6 |
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OB3 |
DB3 |
OB3 |
DB3 |
D7 |
O7 |
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FCT240/2240T |
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FCT244/2244T |
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FCT540/541/2541T |
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*Logic diagram shown for 'FCT540. |
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'FCT541/2541T is the non-inverting option. |
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2565 drw 01 |
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2565 drw 02 |
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2565 drw 03 |
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES |
DECEMBER 1995 |
©1996 Integrated Device Technology, Inc. |
6.8 |
DSC-2565/6 |
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6.8 |
1 |
1 |
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
PIN CONFIGURATIONS
FCT240/2240T
OEA |
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1 |
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20 |
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VCC |
DA0 |
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2 |
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19 |
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OEB |
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OB0 |
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3 |
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18 |
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OA0 |
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4 |
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17 |
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DA1 |
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P20-1 |
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DB0 |
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OB1 |
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5 |
D20-1 |
16 |
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OA1 |
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DA2 |
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6 |
SO20-2 15 |
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DB1 |
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OB2 |
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SO20-7 |
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OA2 |
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7 |
SO20-8 14 |
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DA3 |
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8 |
& |
13 |
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DB2 |
OB3 |
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9 |
E20-1 |
12 |
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OA3 |
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GND |
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10 |
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11 |
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DB3 |
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DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
2565 drw 04
FCT244/2244T
OEA |
1 |
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20 |
VCC |
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DA0 |
2 |
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19 |
OEB |
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OB0 |
3 |
P20-1 |
18 |
OA0 |
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4 |
17 |
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DA1 |
D20-1 |
DB0 |
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OB1 |
5 |
SO20-2 16 |
OA1 |
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DA2 |
6 |
SO20-7 15 |
DB1 |
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OB2 |
7 |
SO20-8 |
14 |
OA2 |
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& |
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DA3 |
8 |
E20-1 |
13 |
DB2 |
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OB3 |
9 |
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12 |
OA3 |
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GND |
10 |
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11 |
DB3 |
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DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
2565 drw 05
FCT540/541/2541T
OEA |
1 |
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20 |
VCC |
D0 |
2 |
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19 |
OEB |
D1 |
3 |
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18 |
O0* |
D2 |
4 |
P20-1 |
17 |
O1* |
D3 |
5 |
D20-1 |
16 |
O2* |
D4 |
6 |
SO20-2 |
15 |
O3* |
D5 |
7 |
SO20-8 |
14 |
O4* |
D6 |
8 |
& |
13 |
O5* |
E20-1 |
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D7 |
9 |
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12 |
O6* |
GND |
10 |
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11 |
O7* |
DIP/SOIC/QSOP/CERPACK
TOP VIEW
*Ox for 540, Ox for 541/2541T
2565 drw 06
INDEX |
OB0 |
DA0 |
OEA VCC |
OEB |
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3 |
2 |
20 19 |
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DA1 |
4 |
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1 |
18 |
OA0 |
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OB1 |
5 |
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17 |
DB0 |
DA2 |
6 |
L20-2 |
16 |
OA1 |
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OB2 |
7 |
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15 |
DB1 |
DA3 |
8 |
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14 |
OA2 |
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9 |
10 11 12 13 |
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OB3 |
GND |
DB3 OA3 |
DB2 |
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LCC |
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TOP VIEW |
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INDEX |
OB0 |
DA0 |
OEA |
VCC |
OEB* |
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3 |
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2 |
1 |
20 19 |
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DA1 |
4 |
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18 |
OA0 |
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OB1 |
5 |
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17 |
DB0 |
DA2 |
6 |
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L20-2 |
16 |
OA1 |
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OB2 |
7 |
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15 |
DB1 |
DA3 |
8 |
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10 11 |
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14 |
OA2 |
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9 |
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12 13 |
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OB3 |
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GND |
DB3 |
OA3 |
DB2 |
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LCC |
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TOP VIEW |
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INDEX |
D1 |
D0 |
OEA |
V CC |
OEB |
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3 |
2 |
20 19 |
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D2 |
4 |
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1 |
18 |
O0* |
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D3 |
5 |
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17 |
O1* |
D4 |
6 |
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L20-2 |
16 |
O2* |
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D5 |
7 |
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15 |
O3* |
D6 |
8 |
9 |
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14 |
O4* |
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10 11 12 13 |
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D7 |
GND |
O 7* |
O6* |
O5* |
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LCC |
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TOP VIEW |
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2565 drw 07
2565 drw 08
2565 drw 09
6.8 |
2 |
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
PIN DESCRIPTION
Pin Names |
Description |
OEA, OEB |
3–State Output Enable Inputs (Active LOW) |
Dxx |
Inputs |
Oxx |
Outputs |
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2565 tbl 01 |
ABSOLUTE MAXIMUM RATINGS(1)
Symbol |
Rating |
Commercial |
Military |
Unit |
VTERM(2) |
Terminal Voltage |
–0.5 to +7.0 |
–0.5 to +7.0 |
V |
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with Respect to |
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GND |
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VTERM(3) |
Terminal Voltage |
–0.5 to |
–0.5 to |
V |
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with Respect to |
VCC +0.5 |
VCC +0.5 |
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GND |
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TA |
Operating |
0 to +70 |
–55 to +125 |
°C |
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Temperature |
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TBIAS |
Temperature |
–55 to +125 |
–65 to +135 |
°C |
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Under Bias |
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TSTG |
Storage |
–55 to +125 |
–65 to +150 |
°C |
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Temperature |
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PT |
Power Dissipation |
0.5 |
0.5 |
W |
IOUT |
DC Output |
–60 to +120 |
–60 to +120 |
mA |
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Current |
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NOTES: |
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2565 lnk 03 |
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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 VCC by +0.5V unless otherwise noted.
2.Input and VCC terminals only.
3.Outputs and I/O terminals only.
FUNCTION TABLE
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Inputs(1) |
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Outputs(1) |
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OEA |
OEB |
D |
240 |
244 |
540 |
541 |
L |
L |
L |
H |
L |
H |
L |
L |
L |
H |
L |
H |
L |
H |
H |
H |
X |
Z |
Z |
Z |
Z |
NOTES: |
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2565 tbl 02 |
1.H = High Voltage Level X = Don’t Care
L = Low Voltage Level Z = High Impedance
CAPACITANCE (TA = +25°C, f = 1.0MHz)
Symbol |
Parameter(1) |
Conditions |
Typ. |
Max. |
Unit |
CIN |
Input |
VIN = 0V |
6 |
10 |
pF |
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Capacitance |
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COUT |
Output |
VOUT = 0V |
8 |
12 |
pF |
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Capacitance |
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NOTE: |
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2565 lnk 04 |
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1. This parameter is measured at characterization but not tested.
6.8 |
3 |
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