IDT54/74FCT623T/AT/CT FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE) IDT54/74FCT623T/AT/CT FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE) Integrated Device Technology, Inc. FEATURES: DESCRIPTION • • • • The FCT623T/AT/CT is a non-inverting octal transceiver with 3-state bus-driving outputs in both the send and receive directions. The B bus outputs are capable of sinking 64mA and sourcing up to 15mA, providing very good capacitive drive characteristics. These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control function implementation allows for maximum flexibility in timing. One important feature of the FCT623T/AT/CT is the Power Down Disable capability. When the GAB and GBA inputs are conditioned to put the device in high-Z state, the I/O ports will maintain high impedance during power supply ramps and when VCC = 0V. This is a desirable feature in back-plane applications where it may be necessary to perform “live” insertion and removal of cards for on-line maintenance. It is also a benefit in systems with multiple redundancy where one or more redundant cards may be powered-off. • • • • • • Std., A and C speed grades Low input and output leakage ≤1µA (max.) CMOS power levels True TTL input and output compatibility – VOH = 3.3V (typ.) – VOL = 0.3V (typ.) High drive outputs (-15mA IOH, 64mA IOL) Power off disable outputs permit “live insertion” 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, CERPACK and LCC packages FUNCTIONAL BLOCK DIAGRAM GBA GAB B1 A1 B2 - B8 A2 - A8 7 other transceivers 2563 drw 01 The IDT logo is a registered trademark of Integrated Device Technology, Inc. MILITARY AND COMMERCIAL TEMPERATURE RANGES 1996 Integrated Device Technology, Inc. 6.19 6.19 NOVEMBER 1995 DSC-2563/5 1 1 IDT54/74FCT623T/AT/CT FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE) MILITARY AND COMMERCIAL TEMPERATURE RANGES GAB VCC 20 19 18 B1 5 17 B2 6 16 B3 7 15 B4 8 14 B5 VCC 2 3 19 GBA 18 B1 17 B2 A3 4 16 A4 15 B3 B4 A5 14 B5 A6 A7 5 A5 6 A6 7 A7 8 13 B6 A8 GND 9 12 10 11 B7 B8 2 L20-2 9 10 11 12 13 A8 A4 3 2563 drw 02 DIP/SOIC/CERPACK TOP VIEW ABSOLUTE MAXIMUM RATINGS(1) Description Enable Inputs A1 - A8 A Bus Inputs or 3-State Outputs B1 - B8 B Bus Inputs or 3-State Outputs 2563 tbl 01 FUNCTION TABLE(1) GBA Enable Inputs GAB L L Outputs B data to A bus H H A data to B bus H L Z L H B data to A bus A data to B bus NOTES: 1. H = HIGH Voltage Level 2. L = LOW Volage Level 3. Z = High-Impedance (OFF) state 2563 drw 03 LCC TOP VIEW DEFINITION OF FUNCTIONAL TERMS Pin Names GBA, GAB B6 P20-1 D20-1 SO20-2 & E20-1 B8 B7 4 A1 1 20 GND A2 A3 INDEX 1 A2 GAB A1 GBA PIN CONFIGURATIONS 2563 tbl 02 Symbol Rating Commercial VTERM(2) Terminal Voltage –0.5 to +7.0 with Respect to GND VTERM(3) Terminal Voltage –0.5 to with Respect to VCC +0.5 GND TA Operating 0 to +70 Temperature TBIAS Temperature –55 to +125 Under Bias TSTG Storage –55 to +125 Temperature PT Power Dissipation 0.5 Military –0.5 to +7.0 Unit V –0.5 to VCC +0.5 V –55 to +125 °C –65 to +135 °C –65 to +150 °C 0.5 W I OUT –60 to +120 mA DC Output Current –60 to +120 2563 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. 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. CAPACITANCE (TA = +25°C, f = 1.0MHz) Symbol Parameter(1) CIN Input Capacitance COUT Output Capacitance Conditions VIN = 0V Typ. 6 VOUT = 0V 8 Max. Unit 10 pF 12 pF 2563 lnk 04 NOTE: 1. This parameter is measured at characterization but not tested. 6.19 2 IDT54/74FCT623T/AT/CT FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE) DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Commercial: TA = 0°C to +70°C, V CC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10% Symbol VIH VIL Parameter Input HIGH Level Test Conditions(1) Guaranteed Logic HIGH Level Input LOW Level Min. 2.0 Typ.(2) — Max. — Unit V Guaranteed Logic LOW Level — — 0.8 V II H Input HIGH Current (5) VCC = Max., VI = 2.7V — — ±1 µA II L Input LOW Current (5) VCC = Max., VI = 0.5V — — ±1 µA VCC = Max., VI = VCC (Max.) — — ±1 µA Current (5) II Input HIGH VIK Clamp Diode Voltage VCC = Min., IN = –18mA — –0.7 –1.2 V IOS Short Circuit Current VCC = Max.(3) , VO = GND –60 –120 –225 mA VOH Output HIGH Voltage (A and B Bus) VCC = Min. VIN = VIH or VIL IOH = –6mA MIL. IOH = –8mA COM'L. IOH = –12mA MIL. IOH = –15mA COM'L. VCC = Min. IOL = 32mA MIL. (4) VIN = VIH or VIL IOL = 48mA COM'L. VCC = Min. IOL = 48mA MIL. (4) VIN = VIH or VIL IOL = 64mA COM'L. VCC = 0V, VIN or VO ≤ 4.5V 2.4 3.3 — V 2.0 3.0 — V — 0.3 0.5 V — 0.3 0.55 V — — ±1 µA — — 200 — mV — 0.01 1 µA VOL Output LOW Voltage (A Bus) VOL Output LOW Voltage (B Bus) IOFF Input/Output Power Off Leakage(6) VH Input Hysteresis ICC Quiescent Power Supply Current VCC = Max., VIN = GND or VCC NOTES: 2563 tbl 05 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, +25°C 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. These are maximum IOL values per output, for 8 outputs turned on simultaneously. Total maximum IOL (all outputs) is 512mA for commercial and 384mA for military. Derate IOL for number of outputs exceeding 8 turned on simultaneously. 5. The test limit for this parameter is ±5µA at TA = –55°C. 6. This parameter is guaranteed but not tested. 6.19 3 IDT54/74FCT623T/AT/CT FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE) MILITARY AND COMMERCIAL TEMPERATURE RANGES POWER SUPPLY CHARACTERISTICS Symbol ∆ICC ICCD IC Parameter Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply Current(4) Total Power Supply Current (6) Test Conditions(1) VCC = Max. VIN = 3.4V(3) VCC = Max. Outputs Open GBA = GAB = GND One Input Toggling 50% Duty Cycle VCC = Max. Outputs Open fi = 10MHz 50% Duty Cycle GBA = GAB = GND One Bit Toggling VCC = Max. Outputs Open fi = 2.5MHz 50% Duty Cycle GBA = GAB = GND Eight Bits Toggling Min. Typ.(2) Max. Unit — 0.5 2.0 mA VIN = VCC VIN = GND — 0.15 0.25 mA/ MHz VIN = VCC VIN = GND — 1.5 3.5 mA VIN = 3.4V VIN = GND — 1.8 4.5 VIN = VCC VIN = GND — 3.0 6.0 (5) VIN = 3.4V VIN = GND — 5.0 14.0 (5) 2563 tbl 07 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, +25°C 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 (fCP/2 + fiNi) ICC = Quiescent Current ∆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) fi = Input Frequency Ni = Number of Inputs at fi All currents are in milliamps and all frequencies are in megahertz. SWITCHING CHARACTERISTICS OVER OPERATING RANGE 54/74FCT623T Com'l. Symbol Parameter tPLH tPHL Propagation Delay An to Bn tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Propagation Delay Bn to An Output Enable Time GBA to An Output Disable Time GBA to An Output Enable Time GAB to Bn Output Disable Time GAB to Bn Condition(1) CL = 50pF RL = 500Ω 54/74FCT623AT Mil. Com'l. 54/74FCT623CT Mil. Com'l. Mil. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit 1.5 7.5 1.5 9.0 1.5 5.5 1.5 6.3 1.5 4.8 1.5 5.4 ns 1.5 7.5 1.5 9.5 1.5 5.5 1.5 6.3 1.5 4.8 1.5 5.4 ns 1.5 9.0 1.5 10.0 1.5 7.0 1.5 8.0 1.5 6.1 1.5 6.9 ns 1.5 8.0 1.5 9.0 1.5 6.5 1.5 7.4 1.5 5.6 1.5 6.4 ns 1.5 9.0 1.5 10.5 1.5 7.0 1.5 8.0 1.5 6.1 1.5 6.9 ns 1.5 8.0 1.5 1.5 6.5 1.5 7.4 1.5 5.6 1.5 6.4 ns NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays 9.0 2563 tbl 07 6.19 4 IDT54/74FCT623T/AT/CT FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE) TEST CIRCUITS AND WAVEFORMS SWITCH POSITION TEST CIRCUITS FOR ALL OUTPUTS V CC 7.0V 500Ω Pulse Generator Open Drain Disable Low Closed Open All Other Tests 2563 lnk 09 DEFINITIONS: CL= Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. D.U.T. 50pF RT Switch Enable Low V OUT VIN Test 500Ω CL 2563 drw 05 SET-UP, HOLD AND RELEASE TIMES DATA INPUT tH tSU TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tREM tSU PULSE WIDTH 3V 1.5V 0V 3V 1.5V 0V LOW-HIGH-LOW PULSE 1.5V tW 3V 1.5V 0V HIGH-LOW-HIGH PULSE 1.5V 3V 1.5V 0V tH 2563 drw 07 2563 drw 06 PROPAGATION DELAY ENABLE AND DISABLE TIMES ENABLE SAME PHASE INPUT TRANSITION tPLH tPHL OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL 3V 1.5V 0V DISABLE 3V 1.5V 0V CONTROL INPUT tPLZ tPZL VOH 1.5V VOL OUTPUT NORMALLY LOW 3V 1.5V 0V SWITCH CLOSED 3.5V 1.5V tPZH OUTPUT NORMALLY HIGH 2563 drw 08 SWITCH OPEN 3.5V 0.3V VOL tPHZ 0.3V 1.5V 0V VOH 0V 2563 drw 09 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 6.19 5 IDT54/74FCT623T/AT/CT FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE) MILITARY AND COMMERCIAL TEMPERATURE RANGES ORDERING INFORMATION IDT XX FCT Temp. Range X Family XXXX Device Type X Package 6.19 X Process Blank B Commercial MIL-STD-883, Class B P D SO L E Plastic DIP CERDIP Small Outline IC Leadless Chip Carrier CERPACK 623T 623AT 623CT Octal Bus Transceiver (Inverting) Octal Bus Transceiver (Non-Inverting) Blank High Drive 54 74 –55°C to +125°C 0°C to +70°C 6