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IDT74FCT240A/C FAST CMOS OCTAL BUFFER/LINE DRIVER
INDUSTRIAL TEMPERATURE RANGE
FAST CMOS OCTAL BUFFER/LINE DRIVER
IDT74FCT240A/C
FEATURES:
* * * * * *
IDT74FCT240A 25% faster than FAST IDT74FCT240C up to 55% faster than FAST 64mA IOL CMOS power levels (1mW typ. static) Meets or exceeds JEDEC standard 18 specifications Available in SOIC package
DESCRIPTION:
The FCT240 octal buffer/line driver is built using an advanced dual metal CMOS technology. The FCT240 is designed to be employed as a memory and address driver, clock driver, and bus-oriented transmitter/receiver which provides improved board density.
FUNCTIONAL BLOCK DIAGRAM
OEA
1
19
OEB DA0
2 18
OA0
OB0 DA1
3
17
DB0
4
16
OA1 DB1
OB1 DA2
5
15
6
14
OA2
7
OB2
8
13
DB2
12
DA3
OA3
11
OB3
9
DB3
JUNE 2002
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
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(c) 2002 Integrated Device Technology, Inc.
DSC-5419/2
IDT74FCT240A/C FAST CMOS OCTAL BUFFER/LINE DRIVER
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM(2) Description Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Operating Temperature Temperature under BIAS Storage Temperature Power Dissipation DC Output Current Max -0.5 to +7 -0.5 to VCC 0 to +70 -55 to +125 -55 to +125 0.5 120 Unit V V C C C W mA VTERM(3) TA TBIAS TSTG PT IOUT
OEA DA0 OB0 DA1 OB1 DA2 OB2 DA3 OB3 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCC OEB OA0 DB0 OA1 DB1 OA2 DB2 OA3 DB3
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. Output and I/O terminals only.
CAPACITANCE (TA = +25C, F = 1.0MHz)
Symbol CIN COUT Parameter(1) Input Capacitance Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 6 8 Max. 10 12 Unit pF pF
SOIC TOP VIEW
NOTE: 1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names OEA, OEB Dxx Oxx Inputs Outputs Description 3-State Output Enable Inputs (Active LOW)
FUNCTION TABLE(1)
OEA L L H Inputs OEB L L H D L H X Outputs H L Z
NOTE: 1. H = HIGH Voltage Level X = Don't Care L = LOW Voltage Level Z = High Impedance
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IDT74FCT240A/C FAST CMOS OCTAL BUFFER/LINE DRIVER
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: VLC = 0.2V; VHC = VCC - 0.2V Commercial: TA = 0C to +70C, VCC = 5.0V 5%
Symbol VIH VIL IIH IIL IOZH IOZL VIK IOS VOH Clamp Diode Voltage Short Circuit Current Output HIGH Voltage Vcc = Min., IN = -18mA Vcc = Max. , VO = GND Vcc = 3V, VIN = VLC or VHC, IOH = -32A Vcc = Min. VIN = VIH or VIL VOL Output LOW Voltage Vcc = Min. VIN = VIH or VIL IOH = -300A IOH = -15mA IOL = 300A IOL = 64mA
(3)
Parameter Input HIGH Level Input LOW Level Input HIGH Current Input LOW Current Off State (High Impedance) Output Current VCC = Max.
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VI = VCC VI = 2.7V VI = 0.5V VI = GND VO = VCC VO = 2.7V VO = 0.5V VO = GND
Min. 2 -- -- -- -- -- -- -- -- -- -- -60 VHC VHC 2.4 -- -- --
Typ.(2) -- -- -- -- -- -- -- -- -- -- -0.7 -120 VCC VCC 4.3 GND GND 0.3
Max. -- 0.8 5 5(4) -5(4) -5 10 10(4) -10(4) -10 -1.2 -- -- -- -- VLC VLC(4) 0.55
Unit V V A
A
V mA V
Vcc = 3V, VIN = VLC or VHC, IOL = 300A
V
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 and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second. 4. This parameter is guaranteed but not tested.
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IDT74FCT240A/C FAST CMOS OCTAL BUFFER/LINE DRIVER
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
VLC = 0.2V; VHC = VCC - 0.2V
Symbol ICC ICC ICCD Parameter Quiescent Power Supply Current Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply Current(4) Test Conditions(1) VCC = Max. VIN VHC; VIN VLC VCC = Max. VIN = 3.4V(3) VCC = Max. Outputs Open OEA = OEB = GND One Input Toggling 50% Duty Cycle IC Total Power Supply Current(6) VCC = Max. Outputs Open fI = 10MHz 50% Duty Cycle OEA = OEB = GND One Bit Toggling VCC = Max. Outputs Open fI = 2.5MHz 50% Duty Cycle OEA = OEB = GND Eight Bits Toggling
NOTES: 1. For conditions shown as Min. or Max., 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 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.
Min. -- --
Typ.(2) 0.2 0.5 0.15
Max. 1.5 2 0.25
Unit mA mA mA/ MHz
VIN VHC VIN VLC
--
VIN VHC VIN VLC (FCT) VIN = 3.4V VIN = GND VIN VHC VIN VLC (FCT) VIN = 3.4V VIN = GND
--
1.7
4
mA
--
2
5
--
3.2
6.5(5)
--
5.2
14.5(5)
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
FCT240A Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ Parameter Propagation Delay Dx to Ox Output Enable Time Output Disable Time Condition(1) CL = 50pF RL = 500 Min.(2) 1.5 1.5 1.5 Max. 4.8 6.2 5.6 Min.(2) 1.5 1.5 1.5 FCT240C Max. 4.3 5.8 5.2 Unit
ns ns ns
NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays.
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IDT74FCT240A/C FAST CMOS OCTAL BUFFER/LINE DRIVER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
V CC 500 VIN Pulse Generator RT D.U.T . VOUT 7.0V
SWITCH POSITION
Test Open Drain Disable Low Enable Low Switch Closed Open
50pF CL
500
All Other Tests
Octal link
DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Test Circuits for All Outputs
DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC.
tSU
tH
tREM
3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V
Octal link
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
Octal link
1.5V
1.5V
tSU
tH
Pulse Width
Set-Up, Hold, and Release Times
ENABLE 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
Octal link
DISABLE 3V 1.5V 0V 3.5V 0.3V tPHZ 0.3V 1.5V 0V VOH 0V
Octal link
CONTROL INPUT tPZL OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED tPZH SWITCH OPEN 3.5V 1.5V tPLZ
VOL
Propagation Delay
Enable and Disable Times
NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns.
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IDT74FCT240A/C FAST CMOS OCTAL BUFFER/LINE DRIVER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT XX XXXX FCT Temp. Range Device Type X Package
SO
Small Outline IC
240A 240C
Octal Buffer/Line Driver
74
0C to +70C
CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054
for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com
for Tech Support: logichelp@idt.com (408) 654-6459
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