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FAST CMOS 16-BIT BUFFER/LINE DRIVER
Integrated Device Technology, Inc.
IDT54/74FCT16240T/AT/CT/ET IDT54/74FCT162240T/AT/CT/ET
FEATURES:
* Common features: - 0.5 MICRON CMOS Technology - High-speed, low-power CMOS replacement for ABT functions - Typical tSK(o) (Output Skew) < 250ps - Low input and output leakage 1A (max.) - ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) - Packages include 25 mil pitch SSOP, 19.6 mil pitch TSSOP, 15.7 mil pitch TVSOP and 25 mil pitch Cerpack - Extended commercial range of -40C to +85C - VCC = 5V 10% * Features for FCT16240T/AT/CT/ET: - High drive outputs (-32mA IOH, 64mA IOL) - Power off disable outputs permit "live insertion" - Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V, TA = 25C * Features for FCT162240T/AT/CT/ET: - Balanced Output Drivers: 24mA (commercial), 16mA (military) - Reduced system switching noise - Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V,TA = 25C
DESCRIPTION:
The FCT16240T/AT/CT/ET and FCT162240T/AT/CT/ET 16-bit buffer/line drivers are built using advanced dual metal CMOS technology. These high-speed, low-power devices offer bus/backplane interface capability with improved packing density. The flow-through organization of signal pins simplifies layout. The three-state controls are designed to operate these devices in a Quad-Nibble, Dual-Byte or single 16-bit word mode. All inputs are designed with hysteresis for improved noise margin. The FCT16240T/AT/CT/ET are ideally suited for driving high capacitance loads and low-impedance backplanes. The output buffers are designed with power off disable capability to allow "live insertion" of boards when used as backplane drivers. The FCT162240T/AT/CT/ET 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. The FCT162240T/AT/CT/ET are plug-in replacements for FCT16240T/AT/CT/ET and 54/74ABT16240 for on-board interface applications.
FUNCTIONAL BLOCK DIAGRAM
1OE 1Y1 1Y2
3OE 3A1 3A2 3A3 3A4 3Y1 3Y2
1A1 1A2 1A3 1A4
1Y3 1Y4
3Y3 3Y4
2OE 2A1 2A2 2A3 2A4 2Y1 2Y2 2Y3 2Y4
4OE 4Y1 4Y2 4Y3 4Y4
2541 drw 02
4A1 4A2 4A3 4A4
2541 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
(c)1996 Integrated Device Technology, Inc.
AUGUST 1996
DSC-4226/9
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IDT54/74FCT16240T/AT/CT/ET,162240T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
1OE 1Y1 1Y2
1 2 3 4 5 6 7 8 9 10 11 12 SO48-1 SO48-2 13 SO48-3 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
2OE 1A1 1A2
1OE 1Y1 1Y2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 E48-1
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
2541drw 04
2OE 1A1 1A2
GND
1Y3 1Y4
GND
1A3 1A4
GND
1Y3 1Y4
GND
1A3 1A4
VCC
2Y1 2Y2
VCC
2A1 2A2
VCC
2Y1 2Y2
VCC
2A1 2A2
GND
2Y3 2Y4 3Y1 3Y2
GND
2A3 2A4 3A1 3A2
GND
2Y3 2Y4 3Y1 3Y2
GND
2A3 2A4 3A1 3A2
GND
3Y3 3Y4
GND
3A3 3A4
GND
3Y3 3Y4
GND
3A3 3A4
VCC
4Y1 4Y2
VCC
4A1 4A2
VCC
4Y1 4Y2
VCC
4A1 4A2
GND
4Y3 4Y4 4OE
GND
4A3 4A4 3OE
2541 drw 03
GND
4Y3 4Y4 4OE
GND
4A3 4A4 3OE
SSOP/ TSSOP/TVSOP TOP VIEW
CERPACK TOP VIEW
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IDT54/74FCT16240T/AT/CT/ET,162240T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
Pin Names xOE xAx xYx Description 3-State Output Enable Inputs (Active LOW) Data Inputs 3-State Outputs
2541 tbl 01
FUNCTION TABLE(1)
Inputs xOE OE L L H
NOTE: 1. H = HIGH Voltage Level X = Don't Care L = LOW Voltage Level Z = High Impedance
xAx L H X
Outputs xYx Y H L Z
2541 tbl 02
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Max. (2) Terminal Voltage with Respect to -0.5 to +7.0 VTERM GND VTERM(3) Terminal Voltage with Respect to -0.5 to GND VCC +0.5 TSTG Storage Temperature -65 to +150 IOUT DC Output Current -60 to +120 Unit V V C mA
CAPACITANCE (TA = +25C, f = 1.0MHz)
Symbol Parameter(1) CIN Input Capacitance COUT Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 3.5 3.5 Max. Unit 6.0 pF 8.0
pF
NOTE: 1. This parameter is measured at characterization but not tested.
2541 lnk 04
2541 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. 2. All device terminals except FCT162XXXT Output and I/O terminals. 3. Output and I/O terminals for FCT162XXXT.
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IDT54/74FCT16240T/AT/CT/ET,162240T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Commercial: TA = -40C to +85C, VCC = 5.0V 10%; Military: TA = -55C to +125C, VCC = 5.0V 10%
Symbol VIH VIL II H II L IOZH IOZL VIK IOS VH ICCL ICCH ICCZ Parameter Input HIGH Level Input LOW Level Input HIGH Current (Input pins)(5) Input HIGH Current (I/O pins)(5) Input LOW Current (Input pins)(5) VCC = Max. VCC = Min., IIN = -18mA VCC = Max., VO = GND (3)
--
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VI = VCC VI = GND VO = 2.7V VO = 0.5V
Min. 2.0 -- -- -- -- -- -- -- -- -80 -- --
Typ.(2) --
-- -- -- -- -- -- -- -0.7 -140
Max.
--
Unit V V A
0.8 1 1 1 1 1 1
-1.2 -225 --
Input LOW Current (I/O pins)(5) High Impedance Output Current (3-State Output pins) (5) Clamp Diode Voltage Short Circuit Current Input Hysteresis Quiescent Power Supply Current
A V mA mV A
100 5
VCC = Max., VIN = GND or VCC
500
2541 lnk 05
OUTPUT DRIVE CHARACTERISTICS FOR FCT16240T
Symbol IO VOH Parameter Output Drive Current Output HIGH Voltage Test Conditions(1) VCC = Max., VO = 2.5V(3) VCC = Min. VIN = VIH or VIL IOH = -3mA IOH = -12mA MIL. IOH = -15mA COM'L. IOH = -24mA MIL. IOH = -32mA COM'L.(4) VCC = Min. IOL = 48mA MIL. VIN = VIH or VIL IOL = 64mA COM'L. VCC = 0V, VIN or VO 4.5V Min. -50 2.5 2.4 2.0 -- -- Typ.(2)
--
Max.
-180
Unit mA V V V V A
2541 lnk 06
3.5 3.5 3.0 0.2 --
-- -- -- 0.55 1
VOL IOFF
Output LOW Voltage Input/Output Power Off Leakage(5)
OUTPUT DRIVE CHARACTERISTICS FOR FCT162240T
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 VIL, VOUT = 1.5V(3) VCC = Min. VIN = VIH or VIL VCC = Min. VIN = VIH or VIL IOH = -16mA MIL. IOH = -24mA COM'L. IOL = 16mA MIL. IOL = 24mA COM'L. Min. 60 -60 2.4 -- Typ.(2) 115 -115 3.3 0.3 Max. 200 -200 -- 0.55 Unit mA mA V V
2541 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 tested at one time. Duration of the test should not exceed one second. 4. Duration of the condition can not exceed one second. 5. The test limit for this parameter is 5A at TA = -55C.
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IDT54/74FCT16240T/AT/CT/ET,162240T/AT/CT/ET FAST CMOS 16-BIT 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) VCC = Max. VIN = 3.4V(3) VCC = Max. Outputs Open xOE = GND One Input Toggling 50% Duty Cycle VCC = Max. Outputs Open fi = 10MHz 50% Duty Cycle xOE = GND One Bit Toggling VCC = Max. Outputs Open fi = 2.5MHz 50% Duty Cycle xOE = GND Sixteen Bits Toggling VIN = VCC VIN = GND Test Conditions(1) Min. -- -- Typ.(2) 0.5 60 Max. 1.5 100 Unit mA
A/ MHz
IC
Total Power Supply Current (6)
VIN = VCC VIN = GND VIN = 3.4V VIN = GND VIN = VCC VIN = GND VIN = 3.4V VIN = GND
--
0.6
1.5
mA
--
0.9
2.3
--
2.4
4.5 (5)
--
6.4
16.5 (5)
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 (fCPNCP/2 + fiNi) ICC = Quiescent Current (ICCL, ICCH and ICCZ) 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) NCP = Number of Clock Inputs at fCP fi = Input Frequency Ni = Number of Inputs at fi
2541 tbl 08
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IDT54/74FCT16240T/AT/CT/ET,162240T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
FCT16240T/162240T Com'l. Symbol Parameter Condition(1) Min.(2) Max. Mil. Min.(2) Max. FCT16240AT/162240AT Com'l. Min.(2) Max. Mil. Min.(2) Max. Unit
tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o)
Propagation Delay xAx to xYx Output Enable Time Output Disable Time Output Skew (3)
CL = 50pF RL = 500
1.5 1.5 1.5 --
8.0 10.0 9.5 0.5
1.5 1.5 1.5 --
9.0 10.5 10.0 0.5
1.5 1.5 1.5 --
4.8 6.2 5.6 0.5
1.5 1.5 1.5 --
5.1 6.5 5.9 0.5
ns ns ns ns
FCT16240CT/162240CT Com'l. Symbol Parameter Condition(1) Min.(2) Max. Mil. Min.(2) Max.
FCT16240ET/162240ET Com'l. Min.(2) Max. Mil. Min.(2) Max. Unit
tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o)
Propagation Delay xAx to xYx Output Enable Time Output Disable Time Output Skew (3)
CL = 50pF RL = 500
1.5 1.5 1.5 --
4.3 5.8 5.2 0.5
1.5 1.5 1.5 --
4.7 6.5 5.7 0.5
1.5 1.5 1.5 --
3.2 4.4 3.6 0.5
-- -- -- --
-- -- -- --
ns ns ns ns
2541 tbl 09
NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
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IDT54/74FCT16240T/AT/CT/ET,162240T/AT/CT/ET FAST CMOS 16-BIT 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
2541 drw 05
SWITCH POSITION
7.0V
Test Open Drain Disable Low Enable Low All Other Tests
Switch
Closed
VOUT
Open
500
2541 lnk 10 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
PULSE WIDTH
DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tSU
tH
3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V
2541 drw 06
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
1.5V
tREM
1.5V
2541 drw 07
tSU
tH
PROPAGATION DELAY
3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V
2541 drw 08
ENABLE AND DISABLE TIMES
ENABLE DISABLE 3V 1.5V 0V 3.5V 0.3V tPHZ 0.3V 1.5V 0V VOH 0V
2541 drw 09
SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL
CONTROL INPUT tPZL OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED tPZH SWITCH OPEN 3.5V 1.5V tPLZ
VOL
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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IDT54/74FCT16240T/AT/CT/ET,162240T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT FCT XX XXXX Temp. Range Device Type X Package X Process Blank B PV PA PF E Commercial MIL-STD-883, Class B Shrink Small Outline Package (SO48-1) Thin Shrink Small Outline Package (SO48-2) Thin Very Small Outline Package (SO48-3) CERPACK (E48-1)
Inverting 16-Bit Buffer/Line Driver 16240T 16240AT 16240CT 16240ET 162240T 162240AT 162240CT 162240ET 54 74 -55C to +125C -40C to +85C
2541 drw 10
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