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FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
Integrated Device Technology, Inc.
IDT54/74FCT164245T
FEATURES:
* 0.5 MICRON CMOS Technology * Bidirectional interface between 3.3V and 5V busses * Control inputs can be driven from either 3.3V or 5V circuits * ESD >2000V per MIL-STD-883, Method 3015; >200V using machine model (C = 200pF, R = 0) * 25 MIL Center SSOP and Cerpack Packages * Extended commercial range of -40C to +85C * VCC1 = 5V 10%, VCC2 = 2.7V to 3.6V * High drive outputs (-32mA IOH, 64mA IOL) on 5V port * Power-off disable on both ports permits "live insertion" * Typical VOLP (Output Ground Bounce) < 0.9V at VCC1 = 5V, VCC2 = 3.3V, TA = 25C
DESCRIPTION:
The FCT164245T 16-bit 3.3V-to-5V translator is built using advanced dual metal CMOS technology. This highspeed, low-power transceiver is designed to interface between a 3.3V bus and a 5V bus in a mixed 3.3V/5V supply environment. This enables system designers to interface TTL compatible 3.3V components with 5V components. The direction and output enable controls operate these devices as either two independent 8-bit transceivers or one 16-bit transceiver. The A port interfaces with the 3.3V bus; the B port interfaces with the 5V bus. The direction control (xDIR) pin controls the direction of data flow. The output enable (xOE) overrides the direction control and disables both ports. These control signals can be driven from either 3.3V or 5V devices. The FCT164245T is ideally suited for driving high capacitance loads and low impedance backplanes. The output buffers are designed with Power-Off Disable capability to allow "hot insertion" of boards when used as backplane drivers. They also allow interface between a mixed supply system and external 5V peripherals.
FUNCTIONAL BLOCK DIAGRAM
1 DIR 1OE 1A1 1B1 1A2 1B2 1A3 1B3
2 DIR 2OE 2A1 2B1 2A2 2B2 2A3 2B3
3.3V PORT
5V PORT
1B4 1A5 1B5 1A6 1B6 1A7 1B7 1A8 1B8
2555 drw 01
2B4 2A5 2B5 2A6 2B6 2A7 2B7 2A8 2B8
2555 drw 02
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
(c)1996 IIntegrated Device Technology, Inc.
FEBRUARY 1996
DSC-2555/4
8.16
1
5V PORT
1A4
3.3V PORT
2A4
IDT54/74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V-TO-5V TRANSLATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
1DIR 1B1 1B2
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 36 35 34 33 32 31 30 29 28 27 26 25
1OE 1A1 1A2
1DIR 1B1 1B2
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
2555 drw 04
1OE 1A1 1A2
GND
1B3 1B4
GND
1A3 1A4
GND
1B3 1B4
GND
1A3 1A4
VCC1
1B5 1B6
VCC2
1A5 1A6
VCC1
1B5 1B6
VCC2
1A5 1A6
GND
1B7 1B8 2B1 2B2
GND
1A7 1A8 2A1 2A2
GND
1B7 1B8 2B1 2B2
GND
1A7 1A8 2A1 2A2
GND
2B3 2B4
GND
2A3 2A4
GND
2B3 2B4
GND
2A3 2A4
VCC1
2B5 2B6
VCC2
2A5 2A6
VCC1
2B5 2B6
VCC2
2A5 2A6
GND
2B7 2B8 2DIR
GND
2A7 2A8 2OE
GND
2B7 2B8 2DIR
2555 drw 03
GND
2A7 2A8 2OE
SSOP TSSOP TOP VIEW
CERPACK TOP VIEW
POWER SUPPLY SEQUENCING
In the IDT54/74FCT164245T the condition of VCC1 (VCC2 -0.5V) must be maintained at all times. For the range of VCC1 = (VCC2 -0.5V) to VCC1 = (VCC2 +0.9V), both the A and B ports will remain in a high impedance state.
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IDT54/74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V-TO-5V TRANSLATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
Pin Names xOE xDIR xAx xBx Description Output Enable Input (Active LOW) Direction Control Input Side A Inputs or 3-State Outputs (3.3V Port) Side B Inputs or 3-State Outputs (5V Port)
2555 tbl 01
FUNCTION TABLE(1)
Inputs xOE OE L L H xDIR L H X Outputs Bus B Data to Bus A Bus A Data to Bus B High Z State
2555 tbl 03
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High Impedance
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Rating (2) Terminal Voltage VTERM with Respect to GND VTERM(3) Terminal Voltage with Respect to GND TA Operating Temperature TBIAS Temperature Under Bias TSTG Storage Temperature PT Power Dissipation IOUT DC Output Current Commercial -0.5 to +7.0 Military -0.5 to +7.0 Unit V
CAPACITANCE (TA = +25C, f = 1.0MHz)
Symbol Parameter(1) CIN Input Capacitance CI/O I/O Capacitance Conditions VIN = 0V VOUT = 0V Typ. 3.5 3.5 Max. Unit 6.0 pF 8.0 pF
-0.5 to VCC1 +0.5 -40 to +85 -55 to +125 -55 to +125 1.0 -60 to +120
-0.5 to VCC1 +0.5 -55 to +125 -65 to +135 -65 to +150 1.0 -60 to +120
V C C C W mA
2555 lnk 04 NOTE: 1. This parameter is measured at characterization but not tested.
2555 lnk 02 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 VCC2. 3. Power supply terminals VCC2.
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IDT54/74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V-TO-5V TRANSLATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (A PORT - 3.3V)
Following Conditions Apply Unless Otherwise Specified: VCC1 = 5V 10%, VCC2 = 2.7V to 3.6V; Commercial: TA = -40C to +85C, Military: TA = -55C to +125C,
Symbol VIH VIL II H II L VIK VOH Parameter Input HIGH Level (Input and I/O pins) Input LOW Level (Input and I/O pins) Input HIGH Current (Input pins) Input HIGH Current (I/O pins) Input LOW Current (Input pins) Input LOW Current (I/O pins) Clamp Diode Voltage Output HIGH Voltage VCC1 = VCC2 = Min. VIN = VIH or VIL VCC2 = 3.0V VIN = VIH or VIL VCC1 = Min. VCC2 = Min. VIN = VIH or VIL Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC1 = Max. VCC2 = Max. VI = 5.5V VI = VCC2 VI = GND VI = GND VCC2 = Min., IIN = -18mA IOH = -0.1mA IOH = -3mA MIL. IOH = -6mA MIL. IOH = -8mA COM'L. IOL = 0.1mA IOL = 16mA IOL = 24mA Min. 2.0 -0.5 -- -- -- -- -- VCC2-0.2 2.4 2.4 -- -- -- -- -- -70 -40 -- -- Typ.(2) --
-- -- -- -- -- -0.7
Max. 5.5 0.8
Unit
V V
5 15 5 15
-1.2
A
V V
-- 3.0 3.0 -- 0.2 0.3 0.3 -- -105 -60 150 0.35
-- -- -- 0.2 0.4 0.55 0.50
VOL
Output LOW Voltage
V
IOFF IOS IO VH ICC2L ICC2H ICC2Z
Input/Output Power Off Leakage Short Circuit Current(4) Output Drive Current Input Hysteresis Quiescent Power Supply Current
VCC = 3.0V IOL = 24mA VIN = VIH or VIL VCC1 = 0V, VCC2 = 0V, VIN or VO 4.5V VCC1 = Max., VCC2 = Max., VO = GND (3) VCC1 = Max., VCC2 = Max., VO = 1.5V(3)
--
100
-150 -90
--
A
mA mA mV mA
VCC1 = Max., VIN = GND or VCC2 VCC2 = Max.
2.0
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 VCC1 = 5.0V, VCC2 = 3.3V, +25C ambient. 3. Not more than one output should be tested at one time. Duration of the test should not exceed one second. 4. This parameter is guaranteed but not tested.
2555 tbl 05
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IDT54/74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V-TO-5V TRANSLATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (B PORT - 5V)
Following Conditions Apply Unless Otherwise Specified: VCC1 = 5V 10%, VCC2 = 2.7V to 3.6V; Commercial: TA = -40C to +85C, Military: TA = -55C to +125C,
Symbol VIH VIL II H II L VIK VOH Parameter Input HIGH Level (Input and I/O pins) Input LOW Level (Input and I/O pins) Input HIGH Current (Input pins) Input HIGH Current (I/O pins) Input LOW Current (Input pins) Input LOW Current (I/O pins) Clamp Diode Voltage Output HIGH Voltage VCC1 = Min., IIN = -18mA VCC1 = Min. VCC2 = Min. VIN = VIH or VIL IOH = -3mA IOH = -12mA MIL. IOH = -15mA COM'L. IOH = -24mA MIL. IOH = -32mA COM'L.(5) IOL = 48mA MIL. IOL = 64mA COM'L. 2.0 -- 3.0 0.2 -- 0.55
V
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC1 = Max. VCC2 = Max. VI = GND VI = VCC1
Min. 2.0 -0.5 -- -- -- -- -- 2.5 2.4
Typ.(2) --
-- -- -- -- -- -0.7
Max. 5.5 0.8 5 15 5 15
-1.2
Unit
V V A
V V
3.5 3.5
-- --
VOL
Output LOW Voltage
IOFF IOS IO VH ICC1L ICC1H ICC1Z
Input/Output Power Off Leakage Short Circuit Current(4) Output Drive Current Input Hysteresis Quiescent Power Supply Current
VCC1 = Min., VCC2 = Min. VIN = VIH or VIL VCC1 = 0V, VCC2 = 0V, VIN or VO 4.5V VCC1 = Max., VCC2 = Max., VO = VCC1 = Max., VCC2 = Max., VO =
--
-- -80 -50 -- --
--
-140
100
-225 -180 --
A mA mA mV mA
GND(3) 2.5V (3)
-75 150 0.08
VCC1 = Max., VIN = GND or VCC2 VCC2 = Max.
1.5
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 VCC1 = 5.0V, VCC2 = 3.3V, +25C ambient. 3. Not more than one output should be tested at one time. Duration of the test should not exceed one second. 4. This parameter is guaranteed but not tested. 5 Duration of the condition can not exceed one second.
2555 tbl 06
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IDT54/74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V-TO-5V TRANSLATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol ICC ICCD Parameter Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply Current(4) Test Conditions(1) VCC1 = Max., VCC2 = Max., VIN = VCC2 -0.6V(3) VCC1 = Max., VCC2 = Max. VIN = VCC2 Outputs Open VIN = GND xOE = xDIR = GND One Input Toggling 50% Duty Cycle VCC1 = Max., VCC2 = Max. VIN = VCC2 - 0.6V Outputs Open VIN = GND fi = 10MHz 50% Duty Cycle xOE = xDIR = GND One Bit Toggling VCC1 = Max., VCC2 = Max Outputs Open fi = 2.5MHz 50% Duty Cycle xOE = xDIR = GND Sixteen Bits Toggling VIN = VCC2 - 0.6V VIN = GND Min. -- -- Typ.(2) 12 75 Max. 30 120 Unit A A/ MHz
IC
Total Power Supply Current (6)
--
1.2
4.7
mA
--
3.5
8.5 (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 VCC1= 5.0V, VCC2= 3.3V, +25C ambient. 3. Per TTL driven input; 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 = ICC1+ ICC2 + ICC DHNT + ICCD (fCPNCP/2 + fiNi) ICC1= Quiescent Current (ICC1L, ICC1H and ICC1Z) ICC2= Quiescent Current (ICC2L, ICC2H and ICC2Z) ICC = Power Supply Current for a TTL High Input 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
2555 tbl 07
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IDT54/74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V-TO-5V TRANSLATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Com'l. Symbol tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Parameter Propagation Delay A to B Propagation Delay B to A Output Enable Time xOE to B Output Disable Time xOE to B Output Enable Time xOE to A Output Disable Time xOE to A Output Enable Time xDIR to B (3) Output Disable Time xDIR to B (3) Output Enable Time xDIR to A (3) Output Disable Time xDIR to A (3) Condition(1) CL = 50pF RL = 500 Min.(2) 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Max. 5.0 5.0 6.5 6.0 6.5 6.0 6.5 6.0 6.5 6.0 Min.(2) -- -- -- -- -- -- -- -- -- -- Mil. Max. -- -- -- -- -- -- -- -- -- -- Unit ns ns ns ns ns ns ns ns ns ns
2555 tbl 08
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.
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IDT54/74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V-TO-5V TRANSLATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS TEST CIRCUITS FOR ALL OUTPUTS
6V V
CC
SWITCH POSITION
Test Open Drain Disable Low Enable Low Disable High Enable High All Other tests Switch 6V
500 V Pulse Generator R
T IN
V D.U.T.
OUT
50pF C
L
500
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
2555 drw 06
tH
tREM
tSU
tH
PROPAGATION DELAY
3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V
2555 drw 07
SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL
Open GND
GND Open
2555 lnk 09
DEFINITIONS: CL= Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
2555 drw 05
PULSE WIDTH
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
1.5V
1.5V
2555 drw 08
ENABLE AND DISABLE TIMES
ENABLE CONTROL INPUT tPZL OUTPUT NORMALLY SWITCH 6V LOW tPZH OUTPUT NORMALLY HIGH SWITCH GND tPLZ 3V 1.5V tPHZ 0.3V 1.5V 0V VOH 0V
2555 drw 09
DISABLE 3V 1.5V 0V 3V 0.3V VOL
NOTES: 1. Diagram shown for input Control Enable-LOW and input Control DisableHIGH 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns
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IDT54/74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V-TO-5V TRANSLATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT FCT XX XXXX Device Type Temp. Range X Package X Process Blank B Commercial MIL-STD-883, Class B
PV PA E 164245T 54 74
Shrink Small Outline Package (SO48-1) Thin Shrink Small Outline Package(SO48-2) Cerpack (E48-1) Non-Inverting 16-Bit Bidirectional Translator -55C to +125C -40C to +85C
2555 drw 10
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