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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 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 1A (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
OEA OEB
DA0
OEA
DA0 OB0 DA1 OB1 DA2 OB2 DA3 OB3
OEA OEB
OA0 DB0 OA1 DB1 OA2 DB2 OA3 DB3 D0 D1 D2 D3 D4 D5 D6 D7
OEB
O0 O1 O2 O3 O4 O5 O6 O7
OA0
DB0
OB0
DA1
OA1
DB1
OB1
DA2
OA2
DB2
OB2
DA3 OB3
OA3
DB3
FCT240/2240T
FCT244/2244T
FCT540/541/2541T *Logic diagram shown for 'FCT540. 'FCT541/2541T is the non-inverting option.
2565 drw 01
2565 drw 02
2565 drw 03
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
(c)1996 Integrated Device Technology, Inc.
DECEMBER 1995
DSC-2565/6
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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
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
32
1
OEA V CC
20 19 18 17 16 15
OEB
DA0
INDEX
OB 0
OA0 DB0 OA1 DB1 OA2
14 9 10 11 12 13
GND
OB3
DB3
OA3
DIP/SOIC/SSOP/QSOP/CERPACK TOP VIEW
2565 drw 04
LCC TOP VIEW
2565 drw 07
FCT244/2244T
OEA DA0 OB0 DA1 OB1 DA2 OB2 DA3 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 DB0 OA1 DB1 OA2 DB2 OA3 DB3 32 DA1 OB1 DA2 OB2 DA3 4 5 6 7 8 L20-2 1 20 19 18 17 16 15 14 9 10 11 12 13
OB3 GND DB3 OA3 DB2 DA0
INDEX
OEB*
OEA VCC
OB0
DB2
OA0 DB0 OA1 DB1 OA2
DIP/SOIC/SSOP/QSOP/CERPACK TOP VIEW
2565 drw 05
LCC TOP VIEW
2565 drw 08
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 O0* O1* O2* O3* O4* O5* O6* O7*
32 D2 D3 D4 D5 D6 4 5 6 7 8
1
20 19 18 17 16 15
OEB
INDEX
O0* O1* O2* O3* O4*
L20-2
14 9 10 11 12 13
D7 GND O6* O 7* O5*
DIP/SOIC/QSOP/CERPACK TOP VIEW
*Ox for 540, Ox for 541/2541T
2565 drw 06
LCC TOP VIEW
2565 drw 09
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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
PIN DESCRIPTION
Pin Names
FUNCTION TABLE
Inputs(1)
OEA, OEB
Dxx Oxx
Description 3-State Output Enable Inputs (Active LOW) Inputs Outputs
2565 tbl 01
OE OEA
L L H
OE OEB
L L H
D L H X
240 H L Z
Outputs(1) 244 540
L H
541
L
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 IOUT DC Output Current -60 to +120 Military -0.5 to +7.0 Unit V
CAPACITANCE (TA = +25C, 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
2565 lnk 04
-0.5 to VCC +0.5 -55 to +125 -65 to +135 -65 to +150 0.5 -60 to +120
V
C C 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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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
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Commercial: TA = 0C to +70C, VCC = 5.0V 5%; Military: TA = -55C to +125C, VCC = 5.0V 10%
Symbol VIH VIL II H II L IOZH IOZL II VIK VH ICC 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 A A A V mV mA
2565 lnk 05
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. IOH = -6mA MIL. VIN = VIH or VIL IOH = -8mA COM'L. IOH = -12mA MIL. IOH = -15mA COM'L. VCC = Min. IOL = 48mA MIL. VIN = VIH or VIL IOL = 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
2565 lnk 06
VOL IOS
Output LOW Voltage Short Circuit Current
OUTPUT DRIVE CHARACTERISTICS FOR FCT2240/2244/2541T
Symbol IODL IODH 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 VIL IOH = -12mA MIL. IOH = -15mA COM'L. IOL = 12mA Min. 16 -16 2.4 -- Typ.(2) 48 -48 3.3 0.3 Max. -- -- -- 0.50 Unit mA mA V V
2565 lnk 07
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, +25C 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 5A at TA = -55C.
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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
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 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
OEA = OEB = GND
One Input Toggling 50% Duty Cycle VCC = Max. Outputs Open fi = 10MHz 50% Duty Cycle -- -- -- -- 0.06 1.5 0.6 1.8 0.9 -- -- -- -- 3.0 1.2 5.0 3.2 0.12 3.5 2.2 4.5 3.2 6.0 (5) 3.4 (5) 14.0 (5) 11.4 (5)
2565 tbl 08
IC
Total Power Supply Current (6)
mA
VIN = GND FCT2xxxT VIN = 3.4 FCTxxxT
OEA = OEB = GND
One Bit Toggling VCC = Max. Outputs Open fi = 2.5MHz 50% Duty Cycle VIN = GND FCT2xxxT VIN = VCC FCTxxxT VIN = GND FCT2xxxT VIN = 3.4 FCTxxxT
OEA = OEB = GND
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, +25C 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 ICC formula. These limits are guaranteed but not tested. 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ICC DHNT + ICCD (fCP/2 + fiNi) ICC = Quiescent Current ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fi = Input Frequency Ni = Number of Inputs at fi All currents are in milliamps and all frequencies are in megahertz.
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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
SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT240/2240T
FCT240T FCT2240T Com'l. Symbol Parameter Condition(1)
Min.(2) Max.
FCT240AT FCT2240AT Mil. Com'l.
Max. Min.(2) Max.
Mil.
Min.(2) Max.
Min.(2)
Unit
tPLH tPHL tPZH tPZL tPHZ tPLZ
Propagation Delay DN to ON Output Enable Time Output Disable Time
CL = 50pF RL = 500
1.5 1.5 1.5
8.0 10.0 9.5
1.5 1.5 1.5
9.0 10.5 10.0
1.5 1.5 1.5
4.8 6.2 5.6
1.5 1.5 1.5
5.1 6.5 5.9
ns ns ns
2565 tbl 09
FCT240CT FCT2240CT Com'l. Symbol Parameter Condition(1)
Min.(2) Max.
FCT240DT Mil. Com'l.
Max. Min.(2) Max.
Mil.
Min.(2) Max.
Min.(2)
Unit
tPLH tPHL tPZH tPZL tPHZ tPLZ
Propagation Delay DN to ON Output Enable Time Output Disable Time
CL = 50pF RL = 500
1.5 1.5 1.5
4.3 5.8 5.2
1.5 1.5 1.5
4.7 6.5 5.7
1.5 1.5 1.5
3.6 4.8 4.0
-- -- --
-- -- --
ns ns ns
2565 tbl 10
SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT244/2244T
FCT244T FCT2244T Com'l. Symbol Parameter Condition(1)
Min.(2) Max.
FCT244AT FCT2244AT Mil. Com'l.
Max. Min.(2) Max.
Mil.
Min.(2) Max.
Min.(2)
Unit
tPLH tPHL tPZH tPZL tPHZ tPLZ
Propagation Delay DN to ON Output Enable Time Output Disable Time
CL = 50pF RL = 500
1.5 1.5 1.5
6.5 8.0 7.0
1.5 1.5 1.5
7.0 8.5 7.5
1.5 1.5 1.5
4.8 6.2 5.6
1.5 1.5 1.5
5.1 6.5 5.9
ns ns ns
2565 tbl 11
FCT244CT FCT2244CT Com'l. Symbol Parameter Condition(1)
Min.(2) Max.
FCT244DT Mil. Com'l.
Max. Min.(2) Max.
Mil.
Min.(2) Max.
Min.(2)
Unit
tPLH tPHL tPZH tPZL tPHZ tPLZ
Propagation Delay DN to ON Output Enable Time Output Disable Time
CL = 50pF RL = 500
1.5 1.5 1.5
4.1 5.8 5.2
1.5 1.5 1.5
4.6 6.5 5.7
1.5 1.5 1.5
3.6 4.8 4.0
-- -- --
-- -- --
ns ns ns
2565 tbl 12
NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays.
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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
SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT540/541/2541T
FCT540T/541T FCT2541T Com'l. Symbol Parameter Condition(1) Mil. FCT540AT/541AT FCT2541AT Com'l. Mil. FCT540CT/541CT FCT2541CT Com'l. Mil. Unit
Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max.
tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ
Propagation Delay DN to ON FCT540 Propagation Delay DN to ON FCT541/2541T Output Enable Time Output Disable Time
CL = 50pF RL = 500
1.5
8.5
1.5
9.5
1.5
4.8
1.5
5.1
1.5
4.3
1.5
4.7
ns
1.5
8.0
1.5
9.0
1.5
4.8
1.5
5.1
1.5
4.1
1.5
4.6
ns
1.5 10.0 1.5 9.5
1.5 10.5 1.5 10.0
1.5 1.5
6.2 5.6
1.5 1.5
6.5 5.9
1.5 1.5
5.8 5.2
1.5 1.5
6.5 5.7
ns ns
NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays.
2565 tbl 13
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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
TEST CIRCUITS AND WAVEFORMS TEST CIRCUITS FOR ALL OUTPUTS
V CC 500 VIN Pulse Generator RT D.U.T. 50pF CL
2565 drw 10
SWITCH POSITION
7.0V
Test Open Drain Disable Low Enable Low All Other Tests
Switch
Closed
VOUT
Open
500
2565 drw 14 DEFINITIONS: CL= Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
SET-UP, HOLD AND RELEASE TIMES
DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tSU 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V
2565 drw 11
PULSE WIDTH
tH
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
1.5V
tREM
1.5V
2565 drw 12
tSU
tH
PROPAGATION DELAY
ENABLE AND DISABLE TIMES
ENABLE DISABLE 3V CONTROL INPUT tPZL OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED tPZH SWITCH OPEN 1.5V 0V 0V
2565 drw 14
SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL
3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V 2565 drw 13
1.5V tPLZ 3.5V 1.5V tPHZ 0.3V VOH 0V 3.5V 0.3V VOL
NOTES: 1. Diagram shown for input Control Enable-LOW and input Control DisableHIGH 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns
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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
ORDERING INFORMATION
IDT XX Temp. Range FCT X Family XXXX Device Type X Package X Process Blank B P D SO L E PY Q 240T 244T 540T 541T 240AT 244AT 540AT 541AT 240CT 244CT 540CT 541CT 240DT 244DT Blank 2 54 74 Commercial MIL-STD-883, Class B Plastic DIP CERDIP Small Outline IC Leadless Chip Carrier CERPACK Shrink Small Outline Package Quarter-size Small Outline Package Inverting Octal Buffer/Line Driver Non-Inverting Octal Buffer/Line Driver Non-Inverting Octal Buffer/Line Driver Inverting Octal Buffer/Line Driver Non-Inverting Octal Buffer/Line Driver
High Drive Balanced Drive -55C to +125C 0C to +70C
2565 drw 15
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