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IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
IDT74FCT16652AT/CT
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.) VCC = 5V 10% 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 * Available in SSOP and TSSOP packages
DESCRIPTION:
The FCT16652T 16-bit registered transceivers are built using advanced dual metal CMOS technology. These high-speed, low-power devices are organized as two independent 8-bit bus transceivers with 3-state D-type registers. For example, the xOEAB and xOEBA signals control the transceiver functions. The xSAB and xSBA control pins are provided to select either real time or stored data transfer. The circuitry used for select control will eliminate the typical decoding glitch that occurs in a multiplexer during the transition between stored and real time data. A low input level selects real-time data and a high level selects stored data. Data on the A or B data bus, or both, can be stored in the internal D-flip-flops by low-to-high transitions at the appropriate clock pins (xCLKAB or xCLKBA), regardless of the select or enable control pins. Flow-through organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin. The FCT16652T is ideally suited for driving high capacitance loads and lowimpedance backplanes. The output buffers are designed with power off disable capability to allow "live insertion" of boards when used as backplane drivers.
FUNCTIONAL BLOCK DIAGRAM
1O E AB 1O EBA 1C LKBA 1S BA 1C LKAB 1S AB B R EG
2O EAB 2O EBA 2C LK BA 2S BA 2C LK AB 2S AB B R EG
D C
1A 1 A R EG 1B 1 2A 1 A R EG
D C
2B 1
D C
D C
TO SEVEN O THER CHANNELS
TO SEVEN O THER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
(c) 2002 Integrated Device Technology, Inc.
JUNE 2002
DSC-5450/2
IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
1O E AB 1C LKAB 1S AB
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Storage Temperature DC Output Current Max -0.5 to +7 -0.5 to VCC+0.5 -65 to +150 -60 to +120 Unit V V C mA
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
1O E BA 1C LKBA 1S BA
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
VTERM(2) VTERM(3) TSTG IOUT
GND
1A 1 1A 2
GND
1B 1 1B 2
VCC
1A 3 1A 4 1A 5
VCC
1B 3 1B 4 1B 5
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 FCT162XXX Output and I/O terminals. 3. Output and I/O terminals for FCT162XXX.
GND
1A 6 1A 7 1A 8 2A 1 2A 2 2A 3
GND
1B 6 1B 7 1B 8 2B 1 2B 2 2B 3
CAPACITANCE (TA = +25C, f = 1.0MHz)
Symbol CIN COUT Parameter(1) Input Capacitance Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 4.5 5.5 Max. 6 8 Unit pF pF
NOTE: 1. This parameter is measured at characterization but not tested.
GND
2A 4 2A 5 2A 6
GND
2B 4 2B 5 2B 6
PIN DESCRIPTION
Pin Names xAx xBx xCLKAB, xCLKBA xSAB, xSBA xOEAB xOEBA Description Data Register A Inputs Data Register B Outputs Data Register B Inputs Data Register A Outputs Clock Pulse Inputs Output Data Source Select Inputs Output Enable Inputs
VCC
2A 7 2A 8
VCC
2B 7 2B 8
GND
2S AB 2C LKAB
GND
2S BA 2C LKBA 2O E BA
2OEAB
SSOP/ TSSOP TOP VIEW
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IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
FUNCTION TABLE
Inputs xOEAB L L X H L L L L H H H xOEBA H H H H X L L L H H L xCLKAB H or L H or L X X X H or L H or L xCLKBA H or L H or L X H or L X X H or L xSAB X X X X(2) X X X X L H H xSBA X X X X X X(2) L H X X H Data I/O(1) xAx Input Input Input Unspecified(1) Output Output Input Output xBx Input Unspecified(1) Output Input Input Input Output Output Operation or Function Isolation Store A and B Data Store A, Hold B Store A in Both Registers Hold A, Store B Store B in Both Registers Real Time B Data to A Bus Stored B Data to A Bus Real Time A Data to B Bus Stored A Data to B Bus Stored A Data to B Bus and Stored B Data to A Bus
NOTES: 1. The data output functions may be enabled or disabled by various signals at the xOEAB or xOEBA inputs. Data input functions are always enabled, i.e. data at the bus pins will be stored on every LOW-to-HIGH transition on the clocks inputs. 2. Select control = L: clocks can occur simultaneously. Select control = H: clocks must be staggered to load both registers. 3. H = HIGH Voltage Level L = LOW Voltage Level X = Don't care = LOW-to-HIGH Transition
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IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
BUS A
BUS B
BUS A
BUS B
xO EA B
xO EBA
xCLKA B
xC LKBA
xSA B
xSB A
xO EAB
xO EBA
xC LKAB
xCLKB A
xS AB
xS BA
L
L
X
X
X
L
H
H
X
X
L
X
Real-Time Transfer Bus B to A
Real-Time Transfer Bus A to B
BUS A
BUS B
BUS A
BUS B
xO EAB
xO EBA
xCLKA B
xC LKBA
xS AB
xS BA
xO EAB
xO EBA
xCLKA B
xC LKBA
xS AB
xS BA
X L L
H X H
X

X X X
X X X
H
L
H or L
H or L
H
H
X
Storage from A and/or B
Transfer Stored Data to A and/or B
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IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5.0V 10%
Symbol VIH VIL IIH IIL 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) 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 VCC = Max VIN = GND or VCC VCC = Min., IIN = -18mA VCC = Max., VO = GND(3) -- VCC = Max. VO = 2.7V VO = 0.5V VI = GND Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VI = VCC Min. 2 -- -- -- -- -- -- -- -- -80 -- -- Typ.(2) -- -- -- -- -- -- -- -- -0.7 -140 100 5 Max. -- 0.8 1 1 1 1 1 1 -1.2 -250 -- 500 V mA mV A A Unit V V A
OUTPUT DRIVE CHARACTERISTICS
Symbol IO VOH Parameter Output Drive Current Output HIGH Voltage VCC = Max., VO = VCC = Min. VIN = VIH or VIL VOL IOFF Output LOW Voltage Input/Output Power Off Leakage(5) VCC = Min. VIN = VIH or VIL VCC = 0V, VIN or VO 4.5V -- -- 1 A
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. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. Duration of the condition can not exceed one second. 5. This test limit for this parameter is 5A at TA = -55C.
Test Conditions(1) 2.5V(3) IOH = -3mA IOH = -15mA IOH = -32mA(4) IOL = 64mA
Min. -50 2.5 2.4 2 --
Typ.(2) -- 3.5 3.5 3 0.2
Max. -180 -- -- -- 0.55
Unit mA V V
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IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
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 xOEAB = xOEBA = GND One Input Toggling 50% Duty Cycle VCC = Max. Outputs Open fCP = 10MHz (xCLKBA) 50% Duty Cycle xOEAB = xOEBA = GND One Bit Toggling fi = 5MHz 50% Duty Cycle VCC = Max. Outputs Open fCP = 10MHz (xCLKBA) 50% Duty Cycle xOEAB = xOEBA = GND Sixteen Bits Toggling fi = 2.5MHz 50% Duty Cycle VIN = VCC VIN = GND Min. -- -- Typ.(2) 0.5 75 Max. 1.5 120 Unit mA A/ MHz
IC
Total Power Supply Current(6)
VIN = VCC VIN = GND
--
0.8
1.7
mA
VIN = 3.4V VIN = GND
--
1.3
3.2
VIN = VCC VIN = GND
--
3.8
6.5(5)
VIN = 3.4V VIN = GND
--
8.3
20(5)
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 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
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IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tPLH tPHL tPLH tPHL tSU tH tW tSK(o) Parameter Propagation Delay Bus to Bus Output Enable Time xOEAB or xOEBA to Bus Output Disable Time xOEAB or xOEBA to Bus Propagation Delay Clock to Bus Propagation Delay xSBA or xSAB to Bus Set-Up Time, HIGH or LOW Bus to Clock Hold Time, HIGH or LOW Bus to Clock Clock Pulse Width, HIGH or LOW Output Skew(3) Condition(1) CL = 50pF RL = 500 74FCT16652AT Min.(2) Max. 2 6.3 2 2 2 2 2 1.5 5 -- 9.8 6.3 6.3 7.7 -- -- -- 0.5 74FCT16652CT Min.(2) Max. 1.5 3.9 1.5 1.5 1.5 1.5 2 0 3 -- 4.8 4.4 4.1 4.2 -- -- -- 0.5 Unit ns ns ns ns ns ns ns ns ns
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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IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
V CC 500 VIN Pulse Generator RT D.U.T. 50pF CL 500 VOUT
7.0V
SWITCH POSITION
Test Open Drain Disable Low Enable Low All Other Tests Switch Closed Open
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
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
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 CONTROL INPUT tPZL OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED tPZH SWITCH OPEN 1.5V 0V 0V 3.5V 1.5V tPHZ 0.3V VOH tPLZ DISABLE 3V 1.5V 0V 3.5V 0.3V 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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IDT74FCT16652AT/CT FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT XX FCT Temp. Range XXX Family XXXX Device Type XX Package
PV PA
Shrink Small Outline Package Thin Shrink Small Outline Package
652AT 652CT
16-Bit Bus Transceiver/Register
16
Double-Density, 5 Volt, High Drive
74
- 40C to +85C
DATA SHEET DOCUMENT HISTORY 1/21/2002 Removed Military temp grade 6/21/2002 Updated as per PDNs Logic-00-07 and Logic-01-04
CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054
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for Tech Support: logichelp@idt.com (408) 654-6459
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