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IDT74FCT162H245AT/CT FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
FEATURES:
* * * * *
IDT74FCT162H245AT/CT
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) * Bus Hold retains last active bus state during 3-state * Eliminates the need for external pull up resistors * Available in SSOP and TSSOP packages
DESCRIPTION:
The FCT162H245T 16-bit transceiver is built using advanced dual metal CMOS technology. These high-speed, low-power transceivers are ideal for synchronous communication between two busses (A and B). The Direction and Output Enable controls operate these devices as either two independent 8-bit transceivers or one 16-bit transceiver. The direction control pin (xDIR) controls the direction of data flow. The output enable pin (xOE) overrides the direction control and disables both ports. All inputs are designed with hysteresis for improved noise margin. The FCT162H245T has "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
1
DIR
1O E 1A 1 1B 1 1A 2 1B 2 1A 3 1B 3 1A 4 1B 4 1A 5 1B 5 1A 6 1B 6 1A 7 1B 7 1A 8 1B 8
2
DIR
2O E 2A 1 2B 1 2A 2 2B 2 2A 3 2B 3 2A 4 2B 4 2A 5 2B 5 2A 6 2B 6 2A 7 2B 7 2A 8 2B 8
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
(c) 2002 Integrated Device Technology, Inc.
NOVEMBER 2002
DSC-5459/3
IDT74FCT162H245AT/CT FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
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 37 36 35 34 33 32 31 30 29 28 27 26 25
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM(2) 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 VTERM(3) TSTG
1A1 1A2
1DIR 1B1 1B2
1OE
IOUT
GND
1B3 1B4
GND
1A3 1A4
VCC
1B5 1B6
VCC
1A5 1A6
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 FCT166XXT (A-Port) Output and I/O terminals. 3. Output and I/O terminals for FCT162XXXT and FCT166XXXT (A-Port).
CAPACITANCE (TA = +25C, f = 1.0MHz)
Symbol CIN COUT Parameter(1) Input Capacitance Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 3.5 3.5 Max. 6 8 Unit pF pF
GND
1B7 1B8 2B1 2B2
GND
1A7 1A8 2A1 2A2
NOTE: 1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names xOE xDIR xAx xBx Description Outputs Enable Input (Active LOW) Direction Control Inputs Side A Inputs or 3-State Outputs(1) Side B Inputs or 3-State Outputs(1)
GND
2B3 2B4
GND
2A3 2A4
VCC
2B5 2B6
VCC
2A5 2A6
NOTE: 1. These pins have "Bus-hold". All other pins are standard inputs, outputs, or I/Os.
FUNCTION TABLE(1)
Inputs xOE L L H
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedance
GND
2B7 2B8 2DIR
GND
2A7 2A8 2OE
xDIR L H X
Output Bus B Data to Bus A Bus A Data to Bus B High Z State
SSOP/ TSSOP TOP VIEW
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IDT74FCT162H245AT/CT FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
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 Parameter Input HIGH Level Input LOW Level Input HIGH Current(4) IIL Input LOW Current(4) IBHH IBHL IOZH IOZL VIK IOS VH ICCL ICCH ICCZ Bus-hold 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 VCC = Max. VIN = GND or VCC VCC = Max., VO = VCC = Max. 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 = 2V VI = 0.8V VO = 2.7V VO = 0.5V VCC = Min., IIN = -18mA GND(3) -- VI = GND Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VI = VCC Min. 2 -- -- -- -- -- -- -- -- -- -50 50 -- -- -- -80 -- -- Typ.(2) -- -- -- -- -- -- -- -- -- -- -- -- -- -- -0.7 -140 100 5 Max. -- 0.8 1 1 100 100 1 1 100 100 -- -- 1 1 -1.2 -250 -- 500 V mA mV A A A Unit V V A
OUTPUT DRIVE CHARACTERISTICS
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, VCC = Min. VIN = VIH or VIL VCC = Min. VIN = VIH or VIL
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 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.
Min. 60 -60 2.4 --
Typ.(2) 115 -115 3.3 0.3
Max. 200 -200 -- 0.55
Unit mA mA V V
VO = 1.5V(3) IOH = -24mA IOH = 24mA
VCC = 5V, VIN = VIH or VIL, VO = 1.5V(3)
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IDT74FCT162H245AT/CT FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
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 = xDIR = GND One Input Toggling 50% Duty Cycle VCC = Max. Outputs Open fi = 10MHz 50% Duty Cycle xOE = xDIR = GND One Bit Toggling VCC = Max. Outputs Open fi = 2.5MHz 50% Duty Cycle xOE = xDIR = 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 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
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
FCT162H245AT Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ tSK(o) Parameter Propagation Delay A to B, B to A Output Enable Time xOE to A or B Output Disable Time xOE to A or B Output Enable Time xDIR to A or B(3) Output Disable Time xDIR to A or B(3) Output Skew(4) Condition(1) CL = 50pF RL = 500 Min.(2) 1.5 1.5 1.5 1.5 1.5 -- Max. 4.6 6.2 5 6.2 5 0.5 FCT162H245CT Min.(2) 1.5 1.5 1.5 1.5 1.5 -- Max. 3.5 4.4 4 4.8 4 0.5 Unit 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. This parameter is guaranteed but not tested. 4. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
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IDT74FCT162H245AT/CT FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
V CC 7.0V 500 V IN Pulse Generator D.U.T. 50pF RT 500 CL V OUT
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 tSU TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tREM tH
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 PHA SE INPUT TRANSITION tPLH OUTPUT tPLH OPPOS ITE P HASE INPUT TRANSITION tPHL tPHL 3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V DISABLE 3V CONTROL INPUT tPZL OUTPUT NORMALLY LOW SW ITCH CLOSED tPZH OUTPUT NORMALLY HIGH SW ITCH OPEN 3.5V 1.5V 0.3V tPHZ 0.3V 1.5V 0V 0V VOH tPLZ 1.5V 0V 3.5V 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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IDT74FCT162H245AT/CT FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT XX Temp. Range FCT XXX Drive X Bus Hold XXXX Device Type XX Package
PV PA
Shrink Small Outline Package Thin Shrink Small Outline Package
245AT 245CT
16-Bit Bidirectional Transceiver
H
Bus-Hold
162
Double-Density, 5 Volt, Balanced Drive
74
-40C to +85C
DATA SHEET DOCUMENT HISTORY 4/11/2002 Removed blank speed option 5/22/2002 Removed TVSOP package
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for Tech Support: logichelp@idt.com (408) 654-6459
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