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FAST CMOS 16-BIT BUFFER/LINE DRIVER
Integrated Device Technology, Inc.
IDT54/74FCT16244T/AT/CT/ET IDT54/74FCT162244T/AT/CT/ET IDT54/74FCT166244T/AT/CT IDT54/74FCT162H244T/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 * Features for FCT16244T/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 FCT162244T/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 * Features for FCT166244T/AT/CT: - Light Drive Balanced Output: 8mA (commercial), 6mA (military) - Minimal system switching noise - Typical VOLP (Output Ground Bounce) < 0.25V at VCC = 5V,TA = 25C * Features for FCT162H244T/AT/CT/ET: - Bus-Hold retains last active bus state during 3-state - Eliminates the need for external pull up resistors
DESCRIPTION:
The 16-Bit Buffer/Line Driver is for bus interface or signal buffering applications requiring high speed and low power dissipation. These devices have a flow through pin organization, and shrink packaging to simplify board layout. All inputs are designed with hysteresis for improved noise margin. The three-state controls allow independent 4-bit, 8-bit or combined 16-bit operation. These parts are plug in replacements for 54/74ABT16244 where higher speed, lower noise or lower power dissipation levels are desired. The FCT16244T/AT/CT/ET are ideally suited for driving high capacitance loads (>200pF) and low impedance backplanes. These "high drive" buffers are designed with power off disable capability to allow "live insertion" of boards when used in a backplane interface. The FCT162244T/AT/CT/ET have balanced output current levels and current limiting resistors. These offer low ground bounce, minimal undershoot, and controlled output fall times, reducing the need for external series terminating resistors while still providing very high speed operation for loads of less than 200pF. The FCT166244T/AT/CT are suited for very low noise, point-to-point driving where there is a single receiver, or a very light lumped load (<100pF). The buffers are designed to limit the output current to levels which will avoid noise and ringing on the signal lines without using external series terminating resistors. The FCT162H244T/AT/CT/ET have "Bus-Hold" which retains the input's last state whenever the input goes to high impedance. This prevents "floating" inputs and eliminates the need for pull-up/down resistors.
FUNCTIONAL BLOCK DIAGRAM
1OE 1A1 1A2 1Y1
3OE 3A1 3A2 3Y1 3Y2
1Y2 1Y3
1A3 1A4
3A3
3Y3 3Y4
1Y4
3A4
2OE 2Y1
4OE 4A1 4A2 4A3
2A1 2A2 2A3
4Y1 4Y2 4Y3
2Y2 2Y3 2Y4
2544 drw 01
2A4
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
4A4
4Y4
2544 drw 02
MILITARY AND COMMERCIAL TEMPERATURE RANGES
(c)1996 Integrated Device Technology, Inc.
OCTOBER 1996
DSC-2544/9
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IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET, 166244T/AT/CT, 162H244T/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 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 SO48-1 37 SO48-2 SO48-3 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
2544 drw 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
GND
4Y3 4Y4 4OE
2544 drw 03
GND
4A3 4A4 3OE
SSOP/ TSSOP/TVSOP TOP VIEW
CERPACK TOP VIEW
PIN DESCRIPTION
Pin Names xOE xAx xYx Description 3-State Output Enable Inputs (Active LOW) Data Inputs(1) 3-State Outputs
2544 tbl 01 NOTE: 1. On FCT16xH these pins have "Bus-hold". All other pins are standard inputs, outputs or I/Os.
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IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET, 166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Max. VTERM(2) Terminal Voltage with Respect to -0.5 to +7.0 GND (3) Terminal Voltage with Respect to VTERM -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
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 L H Z
2544 tbl 02
2544 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 and FCT166XXXT output and I/O terminals. 3. Output and I/O terminals for FCT162XXXT and FCT166XXXT.
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.
2544 lnk 04
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (STANDARD PARTS)
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
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.
2544 lnk 05
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IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET, 166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (BUS-HOLD)
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 Parameter Input HIGH Level Input LOW Level Input HIGH Current(4) II L Input LOW Current(4) IBHH IBHL IOZH IOZL VIK IOS VH ICCL ICCH ICCZ Bus Hold Standard Input(5) Standard I/O(5) Bus-hold Input Bus-hold I/O Standard Input(5) Standard I/O(5) Bus-hold Input Bus-hold I/O Bus-hold Input VCC = Min. VI = 2.0V VI = 0.8V 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
Min. 2.0 -- -- -- -- --
Typ.(2) -- -- -- -- -- -- -- -- -- -- -- --
-- -- -0.7 -140
Max.
--
Unit V V A
0.8 1 1 100 100 1 1 100 100 -- -- 1 1
-1.2 -225 --
VI = GND
-- -- -- -- -50 +50 -- -- -- -80 -- --
A
Sustain Current(4) High Impedance Output Current (3-State Output pins) (5,6) Clamp Diode Voltage Short Circuit Current Input Hysteresis Quiescent Power Supply Current
VO = 2.7V VO = 0.5V
A V mA mV A
100 5
VCC = Max., VIN = GND or VCC
500
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. Pins with Bus-hold are identified in the pin description. 5. The test limit for this parameter is 5A at TA = -55C. 6. Does not include Bus-hold I/O pins.
2544 lnk 06
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IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET, 166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
OUTPUT DRIVE CHARACTERISTICS FOR FCT16244T
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
2544 lnk 07
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 FCT162244T
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
2544 lnk 08
OUPUT DRIVE CHARACTERISTICS FOR FCT166244T
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 = -6mA MIL. IOH = -8mA COM'L. IOL = 6mA MIL. IOL = 8mA COM'L. Min. 16 -16 2.4 -- Typ.(2) 48 -48 3.3 0.3 Max. 96 -96 -- 0.55 Unit mA mA V V
2544 lnk 09
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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IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET, 166244T/AT/CT, 162H244T/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
2544 tbl 10
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IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET, 166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT16244T/FCT162244T
FCT16244T/162244T/166244T Com'l. Symbol Parameter Condition(1) Min.(2) Max. Mil. Min.(2) Max. FCT16244AT/162244AT/166244AT 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 --
6.5 8.0 7.0 0.5
1.5 1.5 1.5 --
7.0 8.5 7.5 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
2544 tbl 11
FCT16244CT/162244CT/166244CT Com'l. Symbol Parameter Condition(1) Min.(2) Max. Mil. Min.(2) Max.
FCT16244ET/162244ET 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 --
4.1 5.8 5.2 0.5
1.5 1.5 1.5 --
4.6 6.5 5.7 0.5
1.5 1.5 1.5 --
3.2 4.4 3.6 0.5
-- -- -- --
-- -- -- --
ns ns ns ns
2544 tbl 12
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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IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET, 166244T/AT/CT, 162H244T/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
2544 drw 05
SWITCH POSITION
7.0V
Test Open Drain Disable Low Enable Low All Other Tests
Switch
Closed
VOUT
Open
500
2544 lnk 13 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
2544 drw 06
PULSE WIDTH
tH
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
1.5V
tREM
1.5V
2544 drw 07
tSU
tH
PROPAGATION DELAY
ENABLE AND DISABLE TIMES
ENABLE DISABLE 3V 1.5V 0V 3.5V 0.3V tPHZ 0.3V 1.5V 0V VOH 0V VOL
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
2544 drw 08
CONTROL INPUT tPZL OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED tPZH SWITCH OPEN 3.5V 1.5V tPLZ
2544 drw 09 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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IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET, 166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT XX FCT Temp. Range X Drive XXXX X Bus Hold Device Type X Package X Process Blank B PV PA PF E 244T 244AT 244CT 244ET Blank H 16 162 166 54 74 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) Non-Inverting 16-Bit Buffer/Line Driver
Standard Bus-hold 16-Bit High Drive 16-Bit Balanced Drive 16-Bit Light Drive -55C to +125C -40C to +85C
2544 drw 10
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