FAST CMOS OCTAL IDT54/74FCT245/2245T/AT/CT/DT BIDIRECTIONAL IDT54/74FCT640/2640T/AT/CT TRANSCEIVERS IDT54/74FCT645/2645T/AT/CT/DT Integrated Device Technology, Inc. FEATURES: DESCRIPTION: Common features: Std.,A, C and D speed grades ~ Low input and output leakage <1HA (max.) CMOS power levels - True TTL input and output compatibility VOH = 3.3V (typ.) VOL = 0.3V (typ.) Meets or exceeds JEDEC standard 18 specifications Product available in Radiation Tolerant and Radiation Enhanced versions - Military product compliant to MIL-STD-883, Class B and DESC listed (dual marked) - Available in DIP, SOIC, SSOP, QSOP, CERPACK and LCC packages + Features for FCT245T/640T/645T: High drive outputs (-15mMA IOH, 64mA IOL) + Features for FCT2245T/2640T/2645T: Balanced Output Drivers: +24mA (commercial), +16mA (military) Reduced system switching noise FUNCTIONAL BLOCK DIAGRAM vA OE Ao Bo Al Bi A2 Be Ag Bs AG Ba AS Bs As Be A? Br FCT245/2245T, 645/2645T are non-inverting options. FCT640/2640T is the inverting option. 2539 drw 01 The IDT logo isa registered trademark of Integrated Device Technology, Inc. MILITARY AND COMMERCIAL TEMPERATURE RANGES 1994 Integrated Device Technology, Inc. 6.2 The tDT octal bidirectional transceivers are built using an advanced dual metal CMOS technology. The IDT54/ 74FCT245/2245 T/AT/CT/DT, IDT54/7 4FCT640/2640T/AT/CT and IDT54/74FCT645/2645T/AT/CT/DT are designed for asyn- chronous two-way communication between data buses. The transmit/receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active HIGH) enables data from A ports to B ports, and receive (active LOW) from B ports to Aports. The output enable (OE) input, when HIGH, disables both A and B ports by placing them in HIGH Z condition. The IDT54/74FCT245/2245T/AT/CT/DT and IDT54/ 74FCT645/2645T/ AT/CT/DT transceivers have non-invert- ing outputs. The IDT54/74FCT640/2640T/AT/CT has inven- ing outputs. The IDT54/74FCT2245T/AT/CT/DT, IDT54/74FCT2640T/ AT/CT and IDT54/74FCT2645T/AT/CT/DT have balanced drive outputs with current limiting resistors. This offers low ground bounce, minimal undershoot and controlled output fall times-reducing the need for external series terminating resis- tors. The IDT54/74FCT2xxxT parts are plug-in replacement for IDT54/74FCTxxxT parts. PIN CONFIGURATIONS TR Oi 50 r] Voc Ac (J 2 191] OF A1 3 P20-1 18 [) Bo Ae 4 pert 7 Bi 20-2 As HS S690-7* HI Be Aa 6 gopo-g* 15 LF) Ba As 17 & 1417 Ba As []8 E20-1 137] Bs A7 (9 12210 Be GND [J 10 110) Br 2539 dw 02 DIP/SOIC/SSOP/QSOP/CERPACK TOP VIEW FCT245/2545/645/2645T/AT/CT/DT only. FCT245/2245T/AT/CT/DT, 640/2640T/AT/CT INDEX 2539 drw 03 TOP VIEW APRIL 1994 DSC-4611/3 1IDT54/74FCT245/2545T/AT/CT/DT, 640/2640T/AT/CT, 645/2645T/AT/CT/DT FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES PIN DESCRIPTION FUNCTION TABLE? Pin Names Description Inputs OE Output Enable input (Active LOW) OE TR Outputs TR Transmit/Receive Input L L Bus B Data to Bus A) Av-A7 Side A Inputs or 3-State Outputs L Bus A Data to Bus B!") Bo-87 Side B Inputs or 3-State Outputs H x High Z State 2539 tior NOTES: 2539 tbl 02 1. 640 is inverting from input to output. 2. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care ABSOLUTE MAXIMUM RATINGS") CAPACITANCE (Ta = +25C, f = 1.0MHz) Symbol Rating Commercial Military Unit Symbol Parameter(1) Conditions | Typ. | Max. | Unit VTEAM(2)| Terminal Voltage | -0.5to+7.0 | -0.5to+7.0] V CIN Input VIN = OV 6 10 | pF ony esPet to Capacitance - CouT Output VouT = OV 8 12 | pF VTeRM()| Terminal Voltage 05 to 0.5 to V Capacit: with Respect to Voc +0.5 Veco +0.5 ee GND : " NOTE: 2539 Ink 04 - 1. This parameter is measured at characterization but not tested. TA Operating Oto +70 -5 to +125 | C Temperature TBIAS Temperature ~55 10 +125 | -65 ta +135 | C Under Bias TsTG Storage -55 to +125 | -65to +150 | C Temperature Pr Power Dissipation 05 05 WwW lout DC Output -60 to +120 | -60 to +120 | mA Current NOTES: 2539 Ink 03 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT- INGS 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 thase indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. No terminal voltage may exceed Vcc by +0.5V unless otherwise noted. 2. Input and Vcc terminals only. 3, Outputs and I/O terminals only. 6.2IDT54/74FCT245/2245T/AT/CT/DT, 640/2640T/AT/CT, 645/2645T/AT/CT/DT FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Commercial: TA = 0C to +70C, Vcc = 5.0V + 5%; Military: Ta = -55C to +125C, Vcc = 5.0V+10% Symbol Parameter Test Conditions Min. | Typ.2 | Max. | Unit Vin Input HIGH Level Guaranteed Logic HIGH Level 2.0 _ _ v VIL Input LOW Level Guaranteed Logic LOW Level _ _ 0.8 Vv lH Input HIGH Current) Vcc = Max, Vi=2.7V _ _ + LA it Input LOW Current(4) Vi = 0.5V _ +H loz4 High Impedance Output Current Vcc = Max. Vos 2.7V _ _ HH pA loz. (3-State Output pins)(4) Vo = 0.5V +H li Input HIGH Current!) Vcc = Max., Vi = Voc (Max.} _ +1 BA VIK Clamp Diode Voltage Vcc = Min., IN = -18MA _ 0.7 | -1.2 Vv los Short Circuit Current Vcc = Max., Vo = GND) -60 | -120 | -225] mA VH Input Hysteresis _ _ 200 _ mV Icc Quiescent Power Supply Current | Vcc = Max., VIN = GND or Vcc _ 0.01 1 mA 2539 Ink 05. OUTPUT DRIVE CHARACTERISTICS FOR FCT245T/640T/645T Symbol Parameter Test Conditions) Min. | Typ.2)| Max. | Unit VOH Output HIGH Voltage Vcc = Min. 1OH = -6mA MIL. 2.4 3.3 _ v VIN = ViIHor VIL lOH = -8mA COM'L. lOH = -12mA MIL. 2.0 3.0 _ Vv loH=-15mMA COML. VoL. Output LOW Voltage Vcc = Min. lo. = 48mA MIL. _ 0.3 0.55 V VIN = Vitor VIL lou = 64mA COM'L. 2539 Ink 06 OUTPUT DRIVE CHARACTERISTICS FOR FCT2245T/2640T/2645T Symbol Parameter Test Conditions Min. | Typ.2)| Max. | Unit lop. Output LOW Current Voc = 5V, ViN= ViHor ViL, VouT= 1.5V@) 60 115 | 150 mA loDH Output HIGH Current Vcc = 5V, VIN = ViHor VIL, VouT= 1.5V -60 | -115] -150] mA VoH Output HIGH Voltage Vcc = Min. low = 16mA MIL. 2.4 3.3 _ Vv VIN = ViH or VIL |OH = 24mA COM'L. VoL Output LOW Voltage Vcc = Min. lot = 16mA MIL. _ 03 0.55 Vv VIN = VIH or VIL lOoL = 24mA COM'L. NOTES: 2539 Ink 07 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 shorted at one time. Duration of the short circuit test should not exceed one second. 4. The test limit for this parameter is +5pA at Ta = -55C. 6.2 3IDT54/74FCT245/2545T/AT/CT/DT, 640/2640T/AT/CT, 645/2645T/AT/CT/DT FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES POWER SUPPLY CHARACTERISTICS Symbol Parameter Test Conditions( Min. |Typ.2 | Max. | Unit Alcc Quiescent Power Supply Current | Vcc = Max. _ Os 2.0 mA TTL Inputs HIGH VIN = 3.4V(3) Icco Dynamic Power Supply Voc = Max. VIN = Voc | FCTxxxT _ 015 | 025 | mW Current(4) Outputs Open VIN = GND MHz OE = T/R = GND FCT2xxxT _ 0.06 | 0.12 One Input Toggling 50% Duty Cycle Ic Tota! Power Supply Current{) Voc = Max. Vin = Voc | FCTxxxT 15 3.5 mA Outputs Open Vin = GND] FCT2xxxT | 0.6 2.2 fi = 10MHz 50% Duty Cycle VIN=3.4 | FOTxxxT _ 1.8 45 OE = T/R = GND VIN = GND | FCT2xxxT 0.9 3.2 One Bit Toggling Vcc = Max. VIN = Voc | FCTxxxT 3.0 | 6.0) Outputs Open Vin = GND| FCT2xxxT | 12 | 3.46) fi = 2.5MHz 50% Duty Cycle VIN=3.4 | FOTxxxT _ 5.0 | 14.0(5) OE = T/R = GND VIN = GND | FCT2xxxT | 3.2 111.48) Eight Bits Toggling NOTES: 2539 thl 08 OohWh . For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. . Typical values are at Vcc = 5.0V, +25C ambient. . Per TTL driven input (ViIN= 3.4V). All other inputs at Vcc or GND. . This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. . Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested. . Ie = IQUIESCENT + IINPUTS + IDYNAMIC Io = lec + Alec DHNT + tccb (for/2 + fiN) Icc = Quiescent Current Alcc = Power Supply Current for a TTL High Input (Vin = 3.4V) Du = Duty Cycle for TTL Inputs High Nt = Number of TTL Inputs at DH Icco = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fcr = Clock Frequency for Register Devices (Zero for Non-Register Devices} fi = Input Frequency Ni = Number of Inputs at fi All currents are in mitliamps and all frequencies are in megahertz. 6.2 4IDT54/74FCT245/224ST/AT/CT/DT, 640/2640T/AT/CT, 645/2645T/AT/CT/DT FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES SWITCHING CHARACTERISTICS OVER OPERATING RANGE FCT245T FCT245AT FCT2245T FCT2245AT Com'l. Mil. Com't. Mil. Symbol Parameter Conditions" Min.@) | Max. | Min.@) | Max. | Min.) | Max. | Min.2)] Max. [ Unit tPLH Propagation Delay CL = 50 pF 1.5 7.0 1.5 7.5 1.5 46 1.5 4.9 ns tPHL AtoB, BtoA Ri = 500Q tPZH Output Enable Time 1.5 95 1.5 10.0 1.5 6.2 1.5 6.5 ns tPZL OE toAarB tPHZ Output Disable Time 1.5 7.5 1.5 10.0 1.5 5.0 1.5 6.0 ns tPLZ OEtoAorB tPZH Output Enable Time 1.5 9.5 1.6 10.0 1.5 6.2 1.5 6.5 ns tPZL. T/A to A or BO) tPHZ Output Disable Time 1.5 7.5 1.5 10.0 1.5 5.0 1.56 6.0 ns tPLZ T/R to A or BY) 2534 tbl og FCT245CT FCT245DT FCT2245CT ECT2245DT Com'l. Mil. Com'l. Mil. Symbol Parameter Conditions Min.@ | Max. | Min. | Max, | Min.?)| Max. | Min.@)| Max. | Unit TPLH Propagation Delay Ci = 50 pF 1.5 41 1.5 4.5 1.5 3.8 _ _ ns TPHL AtoB, BtoA Ri = 500Q tPZH Output Enable Time 1.5 5.8 1.5 6.2 1.5 5.0 _ _ ns teZL OEtoAorB tPHZ Output Disable Time 1.5 4.8 1.5 5.2 1.5 43 _ _ ns {PLZ CEtoAorB tPZH Output Enable Time 1.5 5.8 1.5 6.2 1.5 5.0 _ _ ns tPZL T/R to A or BM tPHZ Output Disable Time 15 4.8 1.5 5.2 1.5 4.3 _ _ ns tPLZ T/R to A or BY! 2534 th! 10 SWITCHING CHARACTERISTICS OVER OPERATING RANGE FCT640T FCT640AT FCT640CT FCT2640T ECT2640AT ECT2645CT Com'l. | Mil. Com'l. Mil. Com'l. Mil. Symbol Parameter Conditions" |Min.| Max. {eatin 2} Max. |Min.@| Max, |Min.@| Max. |[Min.2)] Max, |Min.@| Max. | Unit tPLK | Propagation Delay Cr=50pF {20/70 ]/20]80115/50/15]/53 115} 44/15 |] 47 | ns tPHL_| AtoB, BtoA Ri = 5002 tezH | Output Enabie Time 20/130) 20/160) 15/62/15 /65/15]/58]/15 162 [ns tpzL | OEtoAorB tPHz | Output Disable Time 207100] 20])120/ 15/50/15 ]60]15]48]1.5 152 | ns wiz | COEtoAorB tPzH | Output Enable Time 20]13.0] 20 ]/160)/15]62]/15)/65]15]/58]15 | 62 | ns tpzi | T/Rto A or BS) tPHz | Output Disable Time 2.0 710.0] 20 /120)15]/50]/15]60/15]748/15]52] ns tecz | T/Rto Aor BS) NOTES: 2534 tbh 14 1. See test circuit and waveforms. 2. Minimum fimits are guaranteed but not tested on Propagation Delays. 3. This parameter is guaranteed but not tested. 6.2 5IDT54/74FCT245/2545T/AT/CT/DT, 640/2640T/AT/CT, 645/2645T/AT/CT/DT FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES SWITCHING CHARACTERISTICS OVER OPERATING RANGE FCT645T FCT645AT FCT2645T FCT2645AT Com'l. Mil. Com'l. Mil. Symbol Parameter Conditions Min.@ | Max. | Min. | Max. | Min.2) | Max. | Min. | Max. | Unit 1PLH Propagation Delay CL = 50 pF 1.5 9.5 1.5 11.0 1.5 4.6 1.5 49 ns TPHL AtoB BtoA Re = 5000 1PZH Output Enable Time 1.5 11.0 1.5 12.0 1.5 6.2 1.5 6.5 ns {PZ OE to AorB tPHZ Output Disable Time 1.5 12.0 1.5 13.0 1.5 5.0 1.5 6.0 ns tPLZ OEtoAorB tPZH Output Enable Time 1.5 11.0 1.5 12.0 1.5 6.2 1.5 65 ns tPZL T/R to A or BS) tPHZ Output Disable Time 1.5 12.0 1.5 13.0 1.5 5.0 1.5 6.0 ns tPLz TR to A or BS) 2534 tol 12 FCT645CT FCT645DT FCT2645CT FCT2645DT Com'l. Mil. Com't. Mil. Symbol Parameter Conditions Min.) | Max. | Min.@) | Max. | Min.2)| Max. | Min. | Max. | Unit tPLH Propagation Delay Ci = 50 pF 1.5 41 1.5 45 1.5 3.8 _ ns tPHL AtoB,BtoA Ri = 5000 {PZH Output Enable Time 1.5 5.8 1.5 6.2 1.5 5.0 _ _ ns tPZL OEtoAorB tPHZ Output Disable Time 1.5 4.8 1.5 5.2 1.6 43 _ _ ns tPLz CEtoAarB {PZH Output Enable Time 1.5 5.8 1.5 6.2 1.5 5.0 _ _ ns tPZL TR to A or B) tPHZ Output Disable Time 1.5 48 1.5 5.2 1.5 4.3 _ _- ns tpLz TR to A or BY) NOTES: 2534 thl 13 1. See test circuit and waveforms. 2. Minimum timits are guaranteed but not tested on Propagation Delays. 3. This parameter is guaranteed but not tested. 6.2 6IDT54/74FCT245/2245T/AT/CT/DT, 640/2640T/AT/CT, 645/2645T/AT/CT/DT FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS TEST CIRCUITS AND WAVEFORMS TEST CIRCUITS FOR ALL OUTPUTS MILITARY AND COMMERCIAL TEMPERATURE RANGES SWITCH POSITION Vv Test Switch cc ] o-* 7.0 Open Drain Closed j jose 5000 Disable Low Enable Low VIN Pulse ID.UT All Other Tests Open Generator ~ DEFINITIONS: 2534 Ink 14 C.i= Load capacitance: includes jig and probe capacitance. RT 50022 RT= Termination resistance: should be equal to Zou of the Pulse | Generator. 2534 drw 04 SET-UP, HOLD AND RELEASE TIMES PULSE WIDTH DATA 3V INPUT 15V Ov LOW-HIGH-LOW Vv TIMING 3V PULSE 15 INPUT 1.5V ASYNCHRONOUS CONTROL ov w PRESET 3V V CLEAR 15 HIGH-LOW-HIGH ETC. ov PULSE 1.5V SYNCHRONOUS CONTROL PRESET wv 2534 drw 06 CLEAR OV CLOCK ENABLE ETC. 2534 drw 05 PROPAGATION DELAY ENABLE AND DISABLE TIMES ENABLE DISABLE 3V 3V SAME PHASE INPUT TRANSITION 1.8V CONTROL fo cy OV INPUT ov VoH lag OUTPUT 1.5V OUTPUT 3.5V VoL NORMALLY e LOW . VoL 3 a OPPOSITE PHASE ae INPUT TRANSITION ov OUTPUT aay VOH NORMALLY HIGH Jt 2534 drw 07 OV NOTES: 2534 drw 08 1. Diagram shown for input Control Enable-LOW and input Control} Disable- HIGH 2. Pulse Generator for All Pulses: Rate < 1.0MHz; tr < 2.5ns; tr < 2.5ns 6.2 7IDT54/74FCT245/2545 T/AT/CT/DT, 640/2640T/AT/CT, G45/2645T/AT/CT/DT FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES ORDERING INFORMATION IDT XX FCT xX X X x Temperature Family Device Package Process Range Type Blank Commercial B MIL-STD-883, Class B Pp Plastic DIP D CERDIP SO Small Outline iC L Leadless Chip Carrier E CERPACK PY Shrink Small Outline Package Q Quarter-size Small Outline Package 245T ~Non-Inverting Octal Bidirectional Transceiver 640T = Inverting Octal Bidirectional Transceiver 645T _Non-Inverting Octal Bidirectional Transceiver 245AT 640AT 645AT 245CT 640CT 645CT 245DT 645DT | Blank High Drive 2 Balanced Drive | 54 55C to +125C | 74 0C to +70C 2539 drw 09 6.2