GTLP8T306

GTLP8T306 8-Bit LVTTL/GTLP Bus Transceiver September 1997 Revised April 2000 GTLP8T306 8-Bit LVTTL/GTLP Bus Transceiver General Description The GTLP8T306 is an 8-bit bus transceiver that provides LVTTL to GTLP signal level translation. The device provides a high speed interface between cards operating at LVTTL logic levels and a backplane operating at GTLP logic levels. High speed backplane operation is a direct result of GTLP’s reduced output swing ( VCC ESD Rating Storage Temperature (TSTG) −50 mA +50 mA >2000V −65°C to +150°C −50 mA 100 mA −48 mA −0.5V to +7.0V −0.5V to 7.0V 48 mA −0.5V to 7.0V −0.5V to +7.0V Recommended Operating Conditions (Note 3) Supply Voltage VCC Bus Termination Voltage (VTT) GTLP GTL Input Voltage (VI) on A-Port and control pins HIGH Level Output Current (IOH) A-Port LOW Level Output Current (IOL) A-Port B-Port Operating Temperature (TA) +24 mA +50 mA −40°C to +85°C −24 mA 0V to 5.5V 1.35V to 1.65V 1.14V to 1.26V 3.15V to 3.45V Note 1: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum rating. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Note 2: IO Absolute Maximum Rating must be observed. Note 3: Unused inputs must be held high or low. 3 www.fairchildsemi.com GTLP8T306 DC Electrical Characteristics Over Recommended Operating Free-Air Temperature Range, VREF = 1.0V (unless otherwise noted). Symbol VIH VIL VREF VIK VOH A-Port B-Port Others B-Port Others GTLP GTL VCC = 3.15V VCC = Min to Max (Note 5) VCC = 3.15V VOL A-Port VCC = Min to Max (Note 5) VCC = 3.15V B-Port II A-Port Control Pins B-Port IOFF II (Hold) IOZH IOZL ICC A-Port A-Port A-Port B-Port A-Port B-Port A or B Ports VCC = 3.45V VCC = 3.45V VCC = 3.45V IO = 0 VI = V CC or GND ICC (Note 6) CIN A-Port and Control Pins Control Pins A-Port B-Port Note 4: All typical values are VCC = 3.3V and T A= 25°C. Note 5: For conditions shown as Min, use the appropriate value specified under recommended operating conditions. Note 6: This is the increase in supply current for each input that is at the specified LVTTL voltage level rather than VCC or GND. Test Conditions Min VREF +0.05 2.0 0.0 Typ (Note 4) Max VTT VREF −0.05 0.8 Units V V V V V V 1.0 0.8 II = −18 mA IOH = −100 µA IOH = −12 mA IOH = −24 mA IOL = 100 µA IOL = 24 mA IOL = 40 mA IOL = 50 mA VCC = 3.45V VCC = 3.45V VCC = 3.45V VCC = 0 VCC = 3.15V VCC = 3.45V VI = 5.5V VI = 0V VI = 5.5V VI = 0V VI = VTT VI = 0 VI or VO = 0 to 4.5V VI = 0.8V VI = 2.0V VO = 3.45V VO = 1.5V VO = 0 VO = 0.55 Outputs HIGH Outputs LOW Outputs Disabled One Input at VCC–0.6V 7 8 8 0 75 −20 20 5 −20 −5 18 20 20 1 VCC −0.2 2.4 2.0 0.2 −1.2 V V V 0.5 0.4 0.55 20 −20 5 −5 5 −5 100 µA µA µA µA µA V µA µA VCC = 3.15V mA VCC = 3.45V A or Control Inputs at VCC or GND mA VI = VCC or 0 VI = VCC or 0 VI = VCC or 0 5 7 9 pF www.fairchildsemi.com 4 GTLP8T306 AC Electrical Characteristics Over recommended range of supply voltage and operating free air-temperature, VREF = 1.0V (unless otherwise noted). CL = 30 pF for B-Port and CL = 50 pF for A-Port. Symbol tPLH tPHL tPLH tPHL tRISE tFALL tRISE tFALL tPZH, tPZL tPHZ, tPLZ tPLH tPHL Note 7: All typical values are at VCC = 3.3V and TA = 25°C. From (Input) An To (Output) Bn Min 1.0 1.0 Typ (Note 7) 4.0 5.1 5.8 4.9 2.6 2.6 2.5 2.5 Max 7.5 Units ns 7.5 8.3 ns 1.0 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 An 1.0 1.0 OE Bn 1.0 1.0 8.3 ns ns ns ns 9.5 ns 4.9 5.4 6.0 9.5 9.5 ns 9.5 Bn An 1.0 4.5 5 www.fairchildsemi.com GTLP8T306 Test Circuit and Timing Waveforms Test Circuit for A Outputs Test Circuit for B Outputs Voltage Waveforms Pulse Duration (VM = VCC/2 for A-Port and 1.0 for B-Port) Voltage Waveforms Enable and Disable Times A-Port Voltage Waveforms Propagation Delay and Setup and Hold Times (VM = VCC/2 for A-Port and 1.0 for B-Port) Note A: CL includes probes and Jig capacitance. Note B: For B-Port, CL = 30 pF is used for worst case. www.fairchildsemi.com 6 GTLP8T306 8-Bit LVTTL/GTLP Bus Transceiver Physical Dimensions inches (millimeters) unless otherwise noted 24-Lead Thin Shrink Small Outline Package, JEDEC MO-153, 4.4mm Wide Package Number MTC24 Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 7 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com www.fairchildsemi.com