IDTQS74FCT2652T/AT HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER IDTQS74FCT2652T/AT FEATURES: DESCRIPTION: - - - - - - The IDTQS74FCT2652T is an 8-bit high-speed CMOS TTL-compatible registered bus transceiver with 3-state outputs and a 25 resistor, useful for driving transmission lines and reducing system noise. The 2652 series parts can replace the 652 series to reduce noise in an existing design. All inputs have clamp diodes for undershoot noise suppression. All outputs have ground bounce suppression. Outputs will not load an active bus when Vcc is removed from the device. - - - CMOS power levels: <7.5mW static Undershoot clamp diodes on all inputs True TTL input and output compatibility Ground bounce controlled outputs Reduced output swing of 0 to 3.5V Built-in 25 series resistor outputs reduce reflection and other system noise Std. and A speed grades IOL = 12mA Available in SOIC and QSOP packages FUNCTIONAL BLOCK DIAGRAM A BUS 25 REGISTER CAB GBA MULTIPLEXER SBA SAB MULTIP LEXER GAB CBA REGISTE R 25 B BUS INDUSTRIAL TEMPERATURE RANGE FEBRUARY 2001 1 c 2001 Integrated Device Technology, Inc. DSC-5872 IDTQS74FCT2652T/AT HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION Symbol VTERM Description Terminal Voltage with Respect to GND TSTG Storage Temperature IOUT DC Output Current Max Sink Current/Pin (1) Max. - 0.5 to +7 Unit V - 65 to +150 C 120 mA CAB 1 24 V CC SAB 2 23 CBA 3 22 SBA IIK Input Diode Current, VIN < 0 - 20 mA IOK Output Diode Current, VOUT < 0 - 50 mA GAB A1 4 21 GBA A2 5 20 B1 A3 6 SO24-2 19 SO24-8 B2 A4 7 18 B3 A5 8 17 B4 A6 9 16 B5 A7 10 15 B6 A8 11 14 B7 GN D 12 13 B8 FCTL NOTE: 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. CAPACITANCE (TA = +25OC, f = 1.0MHz) Symbol CIN Parameter(1) Input Capacitance Conditions VIN = 0V Typ. 8 Max. -- Unit pF COUT Output Capacitance VOUT = 0V 8 -- pF FCT_1 SOIC/ QSOP TOP VIEW NOTE: 1. This parameter is measured at characterization but not tested. PIN DESCRIPTION 2 Pin Names Ax I/O I/O Description Side A Inputs or 3-State Outputs Bx I/O Side B Inputs or 3-State Outputs CAB I Clock A to Register CBA I Clock B to Register SAB I A Bus or Reg to B SBA I B Bus or Reg to A GAB I Enable A to B GBA I Enable B to A IDTQS74FCT2652T/AT HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER FUNCTION TABLE INDUSTRIAL TEMPERATURE RANGE (1) Inputs Outputs GAB GBA CAB CBA SAB SBA Ax Bx Function L H -- -- -- -- Z Z Disabled L L -- -- -- -- A Z Output A H H -- -- -- -- Z B Output B H L -- -- -- -- A B Output A and B -- -- -- -- -- -- -- Load A Register -- -- -- -- -- -- -- Load B Register -- -- -- -- L -- -- -- A Bus to B Bus -- -- -- -- H -- -- -- A Reg to B Bus -- -- -- -- -- L -- -- B Bus to A Bus -- -- -- -- -- H -- -- B Reg to A Bus NOTE: 1. H = HIGH L = LOW = LOW-to-HIGH Transition Z = High-Impedance DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5.0V 5% Min. 2 Typ.(1) -- Max. -- Unit V Guaranteed Logic LOW Level -- -- 0.8 V Input Hysteresis VTLH - VTHL for all inputs -- 0.2 -- V IIH Input HIGH Current VCC = Max. 0 VIN < Vcc -- -- 5 A IIL Input LOW Current IOZ Off-State Output Current (Hi-Z) VCC = Max. 0 VIN Vcc -- -- 5 A IOR Current Drive VCC = Max., VOUT = 2.0V(2) VIC Input Clamp Voltage VCC = Min., IIN = -18mA, TA = 25 VOH Output HIGH Voltage VOL ROUT Symbol VIH Parameter Input HIGH Level Test Conditions Guaranteed Logic HIGH Level VIL Input LOW Level VT 50 -- -- mA C(2) -- -0.7 -1.2 V VCC = Min. IOH = -15mA 2.4 -- -- V Output LOW Voltage VCC = Min. Output Resistance VCC = Min. IOL = 12mA IOL = 12mA -- 20 -- 28 0.5 40 NOTES: 1. Typical values are at VCC = 5.0V, TA = 25C. 2. These parameters are guaranteed but not tested. 3 V IDTQS74FCT2652T/AT HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5.0V 5% Symbol ICC Parameter Quiescent Power Supply Current ICC Supply Current per Input TTL Inputs HIGH ICCD Supply Current per Input per MHz Test Conditions(1) VCC = Max. freq = 0 0V VIN 0.2V or Vcc-0.2V VIN Vcc VCC = Max. VIN = 3.4V(2) freq = 0 VCC = Max. Outputs Open and Enabled One Bit Toggling 50% Duty Cycle Other inputs at GND or Vcc(3,4) Min. Max. Unit -- 1.5 mA -- 2 mA -- 0.25 mA/MHz FCTL NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per TLL driven input (VIN = 3.4V). 3. For flip-flops, ICCD is measured by switching one of the data input pins so that the output changes every clock cycle. This is a measurement of device power consumption only and does not include power to drive load capacitance or tester capacitance. 4. 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 Output 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(1) 74FCT2652T Symbol tPHLB tPLHB tPZH tPZL tPHZ tPLZ tPHLC tPLHC tPHLS tPLHS tSU Parameter Bus to Bus Delay (2) Output Enable Time (2) Output Disable Time (2) Clock to Bus Delay (2) SBA/SAB to Bus Delay (2) Data Setup Time 74FCT2652AT Min. Max. Min. Max. Unit 2 9 2 6.3 ns 2 10 2 9.8 ns 2 9 2 6.3 ns 2 9 2 6.3 ns 2 11 2 7.7 ns 4 -- 2 -- ns tH Data Hold Time 2 -- 1.5 -- ns tW Clock Pulse Width HIGH or LOW (3) 6 -- 5 -- ns NOTES: 1. CLOAD = 50pF, RLOAD = 500 unless otherwise noted. 2. Minimums guaranteed but not tested. 3. This parameter is guaranteed by design but not tested. 4 IDTQS74FCT2652T/AT HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS SWITCH POSITION TEST CIRCUITS FOR ALL OUTPUTS V CC Test 7.0V Switch Open Drain 500 Disable Low V OUT V IN Pulse Generator Closed Enable Low D.U.T. All Other Tests Open FCTL 50pF RT DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. 500 CL FC TL lin k PULSE WIDTH SET-UP, HOLD, AND RELEASE TIMES 3V 1.5V 0V 3V 1.5V 0V DATA INPUT tH t SU TIM ING INPUT ASYNCHRONOUS C ONTROL PRES ET CLEAR ETC. SYNCHRO NOUS CONTRO L PRES ET CLEAR CLOCK ENABLE ETC. t REM t SU LO W -HIGH-LOW PULSE 1.5V tW 3V 1.5V 0V HIGH-LOW -HIGH PULSE 1.5V 3V 1.5V 0V tH FC TL lin k FC TL lin k PROPAGATION DELAY ENABLE AND DISABLE TIMES ENAB LE SAM E PHASE INPUT TRANSITION t PLH t PH L OUTPUT t PLH OPPOSITE P HASE INPUT TRANSITION t PH L 3V 1.5V 0V DISA BLE 3V CO NTROL INPUT 1.5V t PZL V OH 1.5V V OL OUTPUT NO RM A LLY LO W 3V 1.5V 0V SW ITCH CLOSE D FC TL lin k SW ITCH OPEN 3.5V 3.5V 1.5V 0.3V t PZH OUTPUT NO RM A LLY HIGH 0V t PLZ V OL t PHZ 0.3V V OH 1.5V 0V 0V FC TL lin k 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 5 IDTQS74FCT2652T/AT HIGH-SPEED CMOS 8-BIT BUS INTERFACE REGISTER TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION ID T Q S XX Temp. Range FCT XXXX Device Type XX Package SO Q Small O utline IC (gull wing) (SO 24-2) Quarter Size Sm all O utline Package (SO24-8) 2652T 2652AT High-Speed CMOS 8-Bit Bus Interface Register Transceiver 74 -40C to +85C CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com* *To search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2. The IDT logo is a registered trademark of Integrated Device Technology, Inc. 6