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| IDT74GTLP306 8-BIT LVTTL/GTLP BUS TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE 8-BIT LVTTL/GTLP BUS TRANSCEIVER IDT74GTLP306 PRELIMINARY FEATURES: * * * * * * * * * * * * * * Bidirectional interface between GTLP and LVTTL logic levels Edge Rate Control Circuit reduces output noise VREF pin provides reference voltage for receiver threshold CMOS technology for low power dissipation Special PVT Compensation circuitry to provide consistent performance over variations of process, supply voltage, and temperature 5V tolerant inputs on LVTTL ports Bus-Hold to eliminate the need for external pull-up resistors for unused inputs to A-Port Power up/down and power-off high-impedance for live insertion TTL-compatible Driver and Control inputs High Output source/sink 24mA on A-Port pins Flow-through architecture optimizes system layout Open drain on GTLP to support wired OR connection ESD performance of >2000V Available in TSSOP package DESCRIPTION: The GTLP306 is an 8-bit bus transceiver. It provides signal level translation, from LVTTL to GTLP, for applications requiring a high-speed interface between cards operating at LVTTL logic levels and back-planes operating at GTLP logic levels. GTLP provides reduced output swing (<1V), reduced input threshold levels, and output edge-rate control to minimize signal setting times. The GTLP306 is a derivative of the Gunning Transceiver Logic (GTL) JEDEC standard JESD8-3 and incorporates internal edge-rate control, which is process, voltage, and temperature (PVT) compensated. The GTLP306 combines a transceiver function with an LVTTL to GTLP translation. Data polarity is non-inverting, and the data flow direction is controlled by the T/R pin. The outputs are enabled to allow data through the device when OE is low. Otherwise, both A and B are placed in a highimpedance state. GTLP output low voltage is less than 0.5V. The output high is 1.5V, and the receiver threshold is 1V. FUNCTIONAL BLOCK DIAGRAM T/R OE A0 (LVTTL I/O) B0 (GTLP I/O) TO SEVEN OTHER CHANNELS The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE 1 c 2002 Integrated Device Technology, Inc. MAY 2002 DSC-5978/8 IDT74GTLP306 8-BIT LVTTL/GTLP BUS TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION OE VCC A0 A1 A2 A3 GND A4 A5 A6 A7 GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 T/R VREF B0 B1 B2 B3 GND B4 B5 B6 B7 GND ABSOLUTE MAXIMUM RATINGS(1,2) Symbol VCC VI VO VO IOL IOH IOL IIK IOK IOK TSTG Rating Supply Voltage DC Input Voltage DC Output Voltage, 3-State DC Output Voltage, Active DC Output Sink Current into A-port DC Output Source Current from A-port DC Output Sink Current into B-port (in the LOW state) DC Input Diode Current VI < 0V DC Output Diode Current VO < 0V DC Output Diode Current VO > VCC Storage Temperature -50 -50 +50 -65 to +150 mA mA mA C Max. -0.5 to +7 -0.5 to +7 -0.5 to +7 -0.5 to +7 48 -48 100 Unit V V V V mA mA mA 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. Unused inputs without Bus-Hold must be held HIGH or LOW. TSSOP TOP VIEW CAPACITANCE (TA = +25C, f = 1.0MHZ) Symbol CIN CI/O Parameter(1) Control Pins A-Port B-Port Conditions VI = VCCQ or 0 VI = VCCQ or 0 VI = VCCQ or 0 Typ.(2) 5 7 9 Max. -- -- -- Unit pF pF pF PIN DESCRIPTION Pin Names OE T/R VREF A0 - A7 B0 - B7 Description(1) Output Enable (Active LOW) Transmit/Receive Input GTLP Input Reference Voltage Side A Inputs or 3-State Outputs Side B Inputs or 3-State Outputs CI/O NOTES: 1. As applicable to the device type. 2. All typical values are at VCC = 3.3V. NOTE: 1. A-Port pins have Bus-Hold. All other pins are standard input, output, or I/O. RECOMMENDED OPERATING CONDITIONS(1) Symbol VCC VTT Supply Voltage Bus Termination Voltage Input Voltage on A-Port and Control Pins HIGH Level Output Current (A-Port) LOW Level Output Current (A-Port) LOW Level Output Current (B-Port) Operating Temperature Rating Recommended 3.15 to 3.45 1.35 to 1.65 0 to 5.5 -24 +24 50 -40 to +85 Unit V V V mA mA mA C FUNCTION TABLE(1) Inputs OE H L L T/R X L H Output High Z on Bus A and Bus B Bus B Data to Bus A Bus A Data to Bus B VI IOH IOL IOL TA NOTE: 1. Unused inputs without Bus-Hold must be held HIGH or LOW. NOTE: 1. H = HIGH Voltage Level X = Don't Care L = LOW Voltage Level 2 IDT74GTLP306 8-BIT LVTTL/GTLP BUS TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VREF = 1V, VCC = 3.3V 5% Symbol VIH VIL VREF VIK VOH A-Port VOL B-Port Control Pins A-Port II B-Port IOFF II (HOLD) IOZH IOZL A-Port A-Port A-Port B-Port A-Port B-Port VCC = 3.45V ICC (VCC) ICC (3) Parameter B-Port All Other ports B-Port All Other ports GTLP GTL -- A-Port VCC = 3.15V VCC = Min to Max VCC = 3.15V Test Conditions -- -- -- -- -- -- II = -18mA (2) Min. VREF+ 0.05 2 0 -- -- -- -- VCC-0.2 2.4 2 -- -- -- -- -- -- -- -- -- -- 75 -20 -- -- -- -- -- -- -- -- Typ.(1) -- -- -- -- 1 0.8 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 7 8 8 0 Max. VTT -- VREF- 0.05 0.8 -- -- -1.2 -- -- -- 0.2 0.5 0.4 0.55 5 20 -20 5 -5 100 -- -- 20 5 -20 -5 18 20 20 1 Unit V V V V V IOH = -100A IOH = -12mA IOH = -24mA IOL = 100A IOL = 24mA IOL = 40mA IOL = 50mA VI = 5.5V or 0V VI = 5.5V VI = 0 VI = VTT VI = 0 VI or VO = 0 to 4.5V VI = 0.8V VI = 2V VO = 3.45 V VO = 1.5V VO = 0 VO = 0.55V Outputs HIGH Outputs LOW Outputs Disabled One Input at VCC - 0.6V VCC = Min to Max(2) VCC = 3.15V VCC = 3.15V VCC = 3.45V VCC = 3.45V VCC = 3.45V VCC = 0 VCC = 3.15V VCC = 3.45V VCC = 3.45V V A A A A A A or B Ports A-Port and Control Pins IO = 0 VI = VCC or GND VCC = 3.45V A or Control Inputs at VCC or GND mA mA NOTES: 1. All typical values are at VCC = 3.3V and TA = 25C. 2. For conditions shown as Max. or Min., use appropriate value specified under Recommended Operating Conditions. 3. ICC is the increase in supply current for each input that is at the specified LVTTL voltage level rather than VCC or GND. 3 IDT74GTLP306 8-BIT LVTTL/GTLP BUS TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS OVER OPERATING RANGE (1,2) Symbol tPLH tPHL tPLH tPHL tRISE tFALL tRISE tFALL tPZH, tPZL tPHZ, tPLZ tPLH tPHL NOTES: 1. See Test Circuits and Waveforms. TA = -40C to +85C. 2. Unless otherwise noted, VREF = 1V. 3. Typical values are at VCC = 3.3V and TA = 25C. Parameter Ax to Bx Bx to Ax Transition Time, B outputs (20% to 80%) Transition Time, B outputs (20% to 80%) Transition Time, A outputs (10% to 90%) Transition Time, A outputs (10% to 90%) OE to Ax OE to Bx Min. 1 1 1 1 -- -- -- -- 1 1 1 1 Typ.(3) 4 5.1 5.8 4.9 2.6 2.6 2.5 2.5 4.5 4.9 5.4 6 Max. 7.5 7.5 8.3 8.3 -- -- -- -- 9.5 9.5 9.5 9.5 Unit ns ns ns ns ns ns ns ns 4 IDT74GTLP306 8-BIT LVTTL/GTLP BUS TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS 6V Open GND 500 FROM OUTPUT UNDER TEST 25 1.5V (GTLP) 1.2V (GTL) FROM OUTPUT UNDER TEST CL = 50pF 500 S 30pF (1) NOTE: 1. CL includes probes and jig capacitance. NOTE: 1. CL includes probes and jig capacitance. For B-Port outputs, CL = 30pF is used for worst case edge rate. Test Circuit for A Outputs(1) Test Circuit for B Outputs(1) SWITCH POSITION Test tPLH / tPHL tPHZ / tPZH tPLZ / tPZL Switch Open GND 6V NOTE: 1. 1.5V for B-Port GTLP. 1.2V for B-Port GTL. tW 3V (1) INPUT Vm V Vm V 0V Voltage Waveforms Pulse Duration (Vm = VCC/2 for A-Port, 1V for GTLP B-Port, and 0.8V for GTL B-Port) NOTE: All input pulses have the following characteristics: frequency = 10 MHz, tR = tF = 2 ns, ZO = 50. The outputs are measured one at a time with one transition per measurement. 5 IDT74GTLP306 8-BIT LVTTL/GTLP BUS TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS 3V INPUT Vm V 0V tPHL tPLH 3V OUTPUT Vm V 0V Voltage Waveforms Propagation Delay Times (2) NOTES: 1. 1.5V for B-Port GTLP, 1.2V for B-Port GTL. 2. VM = VCC/2 for A-port, 1V for GTLP B-port, and 0.8V for GTL B-port. (1) (1) OUTPUT CONTROL 3V VCC/2 tPZ tPL Z VCC/2 0V 3V VOL + 0.3V VOL tPHZ VCC/2 VOH VOH - 0.3V 0V OUTPUT WAVEFORM 1 (S AT 6V) OUTPUT WAVEFORM 2 (S AT GND) L VCC/2 tPZH Voltage Waveforms Enable and Disable Times (A-Port) NOTE: Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control. All input pulses have the following characteristics: frequency = 10 MHz, tR = tF = 2 ns, ZO = 50. The outputs are measured one at a time with one transition per measurement. 6 IDT74GTLP306 8-BIT LVTTL/GTLP BUS TRANSCEIVER INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION XX GTLP XX IDT XXX Temp. Range Device Type Package PG Thin Shrink Small Outline Package 306 8-Bit LVTTL/GTLP Bus 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 for Tech Support: logichelp@idt.com (408) 654-6459 7 |
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