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FAST CMOS OCTAL BUFFER/LINE DRIVER
IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT MILITARY AND COMMERCIAL TEMPERATURE RANGES IDT54/74FCT240T/AT/CT/DT - 2240T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVERS
IDT54/74FCT244T/AT/CT/DT - 2244T/AT/CT IDT54/74FCT540T/AT/CT IDT54/74FCT541/2541T/AT/CT
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 – Resistor outputs (-15mA IOH, 12mA IOL Com.) (-12mA IOH, 12mA IOL Mil.) – 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
OE
A
OE OE
B
A
OE OE
B
A
OE
B
DA0
OA 0
DB0
DA0 OB0 DA1 OB1 DA2 OB2 DA3 OB3
OA0 DB0 OA1 DB1 OA2 DB2 OA3 DB3
D0 D1 D2 D3 D4 D5 D6 D7
O0 O1 O2 O3 O4 O5 O6 O7
OB 0
DA1
OA 1
DB1
OB 1
DA2
OA 2
DB2
OB 2
DA3 OB3
OA 3
DB3
FCT240/2240T
FCT244/2244T
FCT540/541/2541T *Logic diagram shown for 'FCT540. 'FCT541/2541T is the non-inverting option.
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The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
В©1996 Integrated Device Technology, Inc.
DECEMBER 1995
DSC-2565/6
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FAST CMOS OCTAL BUFFER/LINE DRIVER
IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
FCT240/2240T
OEA DA0 OB0 DA1 OB1 DA2 OB2 DA3 OB3 GND 1 2 3 4 5 6 7 8 9 10 P20-1 D20-1 SO20-2 SO20-7 SO20-8 & E20-1 20 19 18 17 16 15 14 13 12 11 VCC OEB OA0 DB0 OA1 DB1 OA2 DB2 OA3 DB3 DA1 OB1 DA2 OB2 DA3 4 5 6 7 8 L20-2
3 2
1
OEA V CC
20 19 18 17 16 15
OEB
DA 0
INDEX
OB 0
OA0 DB0 OA1 DB1 OA2
14 9 10 11 12 13
GND
OB3
DB 3
OA3
DIP/SOIC/SSOP/QSOP/CERPACK TOP VIEW
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LCC TOP VIEW
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FCT244/2244T
OEA DA 0 OB0 DA 1 OB1 DA 2 OB2 DA 3 OB3 GND 1 2 3 4 5 6 7 8 9 10 20 19 P20-1 D20-1 SO20-2 SO20-7 SO20-8 & E20-1 18 17 16 15 14 13 12 11 VCC OEB OA0 DB 0 OA1 DB 1 OA2 DB 2 OA3 DB 3 3 2 DA 1 OB1 DA 2 OB2 DA 3 4 5 6 7 8 L20-2 1 20 19 18 17 16 15 14 9 10 11 12 13
OB3 GND DB 3 OA3 DB 2 DA 0
INDEX
OEB*
OEA VCC
OB0
DB 2
OA0 DB 0 OA1 DB 1 OA2
DIP/SOIC/SSOP/QSOP/CERPACK TOP VIEW
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LCC TOP VIEW
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FCT540/541/2541T
OEA V CC D1 D0
OEA D0 D1 D2 D3 D4 D5 D6 D7 GND
1 2 3 4 5 6 7 8 9 10 P20-1 D20-1 SO20-2 SO20-8 & E20-1
20 19 18 17 16 15 14 13 12 11
VCC OEB O 0* O 1* O 2* O 3* O 4* O 5* O 6* O 7*
3 2 D2 D3 D4 D5 D6 4 5 6 7 8
1
20 19 18 17 16 15
OEB
INDEX
O 0* O 1* O 2* O 3* O 4*
L20-2
14 9 10 11 12 13
D7 GND O 6* O 7* O 5*
DIP/SOIC/QSOP/CERPACK TOP VIEW
*O x for 540, Ox for 541/2541T
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LCC TOP VIEW
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w w w . CMOS OCTAL e e t 4 U . c o m D a t a S h BUFFER/LINE DRIVER FAST
IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
Pin Names OE A, OE B Dxx Oxx 3–State Output Enable Inputs (Active LOW) Inputs Outputs
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FUNCTION TABLE
OE A
Inputs(1) OE B L L H
D L H X
240 H L Z
Outputs(1) 244 540
L H
541
L
L L H
H Z
L Z
H Z
2565 tbl 02
NOTES: 1. H = High Voltage Level X = Don’t Care L = Low Voltage Level Z = High Impedance
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Rating Commercial VTERM(2) Terminal Voltage –0.5 to +7.0 with Respect to GND VTERM(3) Terminal Voltage –0.5 to with Respect to VCC +0.5 GND TA Operating 0 to +70 Temperature TBIAS Temperature –55 to +125 Under Bias TSTG Storage –55 to +125 Temperature PT Power Dissipation 0.5 I OUT DC Output Current –60 to +120 Military –0.5 to +7.0 Unit V
CAPACITANCE (TA = +25В°C, f = 1.0MHz)
Symbol Parameter(1) CIN Input Capacitance COUT Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 6 8 Max. Unit 10 pF 12
pF
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–0.5 to VCC +0.5 –55 to +125 –65 to +135 –65 to +150 0.5 –60 to +120
V
В°C В°C В°C
W mA
NOTE: 1. This parameter is measured at characterization but not tested.
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 VCC by +0.5V unless otherwise noted. 2. Input and VCC terminals only. 3. Outputs and I/O terminals only.
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FAST CMOS OCTAL BUFFER/LINE DRIVER
IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Commercial: TA = 0°C to +70°C, VCC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10%
Symbol VIH VIL II H II L I OZH I OZL II VIK VH I CC Parameter Input HIGH Level Input LOW Level Input HIGH Current(4) Input LOW Current (4) High Impedance Output Current (3-State Output pins) (4) Input HIGH Current(4) Clamp Diode Voltage Input Hysteresis Quiescent Power Supply Current VCC = Min., IIN = –18mA
—
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VCC = Max. VI = 2.7V VI = 0.5V VO = 2.7V VO = 0.5V VCC = Max., VI = VCC (Max.)
Min. 2.0 — — — — — — — — —
Typ.(2) — — — — — — — –0.7 200 0.01
Max. — 0.8 ±1 ±1 ±1 ±1 ±1 –1.2 — 1
Unit V V ВµA ВµA ВµA V mV mA
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VCC = Max., VIN = GND or VCC
OUTPUT DRIVE CHARACTERISTICS FOR FCT240/244/540/541T
Symbol VOH Parameter Output HIGH Voltage Test Conditions(1) VCC = Min. I OH = –6mA MIL. VIN = VIH or V IL I OH = –8mA COM'L. I OH = –12mA MIL. I OH = –15mA COM'L. VCC = Min. I OL = 48mA MIL. VIN = VIH or V IL I OL = 64mA COM'L. VCC = Max., VO = GND (3) Min. 2.4 2.0 — –60 Typ.(2) 3.3 3.0 0.3 –120 Max. — — 0.55 –225 Unit V V V mA
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VOL I OS
Output LOW Voltage Short Circuit Current
OUTPUT DRIVE CHARACTERISTICS FOR FCT2240/2244/2541T
Symbol I ODL I ODH VOH VOL Parameter Output LOW Current Output HIGH Current Output HIGH Voltage Output LOW Voltage Test Conditions(1) VCC = 5V, VIN = VIH or VIL, VOUT = 1.5V (3) VCC = 5V, VIN = VIH or V IL, VOUT = 1.5V (3) VCC = Min. VIN = VIH or VIL VCC = Min. VIN = VIH or V IL I OH = –12mA MIL. I OH = –15mA COM'L. I OL = 12mA Min. 16 –16 2.4 — Typ.(2) 48 –48 3.3 0.3 Max. — — — 0.50 Unit mA mA V V
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NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at Vcc = 5.0V, +25°C ambient. 3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second. 4. The test limit for this parameter is ±5µA at TA = –55°C.
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FAST CMOS OCTAL BUFFER/LINE DRIVER
IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol ∆ICC ICCD Parameter Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply Current(4) Test Conditions(1) VCC = Max. VIN = 3.4V(3) VCC = Max. Outputs Open
OE A = OE B = GND
Min. — —
Typ.(2) 0.5 0.15
Max. 2.0 0.25
Unit mA mA/ MHz
VIN = VCC FCTxxxT VIN = GND FCT2xxxT VIN = VCC FCTxxxT
IC
Total Power Supply Current (6)
One Input Toggling 50% Duty Cycle VCC = Max. Outputs Open fi = 10MHz 50% Duty Cycle
OE A = OE B = GND
— — — —
0.06 1.5 0.6 1.8 0.9
0.12 3.5 2.2 4.5 3.2 6.0 (5) 3.4 (5) 14.0 (5) 11.4 (5)
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mA
VIN = GND FCT2xxxT VIN = 3.4 FCTxxxT
One Bit Toggling VCC = Max. Outputs Open fi = 2.5MHz 50% Duty Cycle
OE A = OE B = GND
VIN = GND FCT2xxxT VIN = VCC FCTxxxT — — — — VIN = GND FCT2xxxT VIN = 3.4 FCTxxxT
3.0 1.2 5.0 3.2
Eight Bits Toggling
VIN = GND FCT2xxxT
NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25В°C ambient. 3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of the |