PO74G244A www.potatosemi.com OCTAL 3-STATE BUS BUFFERS 74 Series Noise Cancellation GHz Logic FEATURES: DESCRIPTION: . Patented technology . Operating frequency up to 1.125GHz with 2pf load . Operating frequency up to 700MHz with 5pf load . Operating frequency up to 300MHz with 15pf load Potato Semiconductor’s PO74G244A is designed for world top performance using submicron CMOS technology to achieve 1.125GHz TTL /CMOS output frequency with less than 1.5ns propagation delay. This Octal bus buffer gate is designed for 1.65-V to 3.6-V VCC operation. . Operating frequency up to 100MHz with 50pf load . VCC Operates from 1.65V to 3.6V . Propagation delay < 1.5ns max with 15pf load . Low input capacitance: 4pf typical . Available in 20pin TSSOP package The PO74G244A features independent line driver swith 3-state outputs. Each output is disabled when the associated output- enable(OE) input is high. Pin Configuration Logic Block Diagram 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 1 20 3 18 2 4 5 6 7 8 9 10 19 17 16 15 14 13 12 11 Inputs can be driven from either 3.3V or 5V devices. This feature allows the use of these devices as translators in a mixed 3.3V/5V system environment. VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 1OE 1A1 1A2 1A3 1A4 2OE 2A1 Pin Description INPUTS OE A OUTPUT Y L H H L L L H X Z Potato Semiconductor Corporation 2A2 2A3 2A4 1 1 2 18 4 16 6 14 8 12 1Y1 1Y2 1Y3 1Y4 19 11 9 13 7 15 5 17 3 2Y1 2Y2 2Y3 2Y4 01/01/10 PO74G244A www.potatosemi.com OCTAL 3-STATE BUS BUFFERS 74 Series Noise Cancellation GHz Logic Maximum Ratings Description Max Unit Storage Temperature -65 to 150 °C Operation Temperature -40 to 85 °C Operation Voltage -0.5 to +4.6 V Input Voltage -0.5 to +5.5 V Output Voltage -0.5 to Vcc+0.5 V Note: stresses greater than listed under 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 specification is not implied. DC Electrical Characteristics Symbol Description VOH Output High voltage VOL Test Conditions Min Typ Max Unit Vcc=3V Vin=VIH or VIL, IOH= -12mA 2.4 3 - V Output Low voltage Vcc=3V Vin=VIH or VIL, IOH=12mA - 0.3 0.5 V VIH Input High voltage Guaranteed Logic HIGH Level (Input Pin) 2 - 5.5 V VIL Input Low voltage Guaranteed Logic LOW Level (Input Pin) -0.5 - 0.8 V IIH Input High current Vcc = 3.6V and Vin = 5.5V - - 1 uA IIL Input Low current Vcc = 3.6V and Vin = 0V - - -1 uA VIK Clamp diode voltage Vcc = Min. And IIN = -18mA - -0.7 -1.2 V Notes: 1. 2. 3. 4. 5. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. Typical values are at Vcc = 3.3V, 25 °C ambient. This parameter is guaranteed but not tested. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. VoH = Vcc – 0.6V at rated current Potato Semiconductor Corporation 2 01/01/10 PO74G244A www.potatosemi.com OCTAL 3-STATE BUS BUFFERS 74 Series Noise Cancellation GHz Logic Power Supply Characteristics Symbol IccQ Icc Description Test Conditions (1) Min Typ Max Unit Quiescent Power Supply Current Vcc=Max, Vin=Vcc or GND - 0.1 30 uA Power Supply Current per Input High Vcc=Max, Vin= Vcc-0.6V - 50 300 uA Notes: 1. 2. 3. 4. 5. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. Typical values are at Vcc = 3.3V, 25°C ambient. This parameter is guaranteed but not tested. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. VoH = Vcc – 0.6V at rated current Capacitance Parameters (1) Description Cin Cout Test Conditions Typ Unit Input Capacitance Vin = 0V pF Output Capacitance Vout = 0V 4 6 Test Conditions (1) M ax Unit pF Notes: 1 This parameter is determined by device characterization but not production tested. Switching Characteristics Symbol Description tPLH Propagation Delay A to Y CL = 15pF 1.5 ns tPHL Propagation Delay A to Y CL = 15pF 1.5 ns tPZH or tPZL Output Enable Time CL = 15pF 2.5 ns tPHZ or tPLZ Output Disable Time CL = 15pF 2.5 ns tr/tf Rise/Fall Time 0.8V – 2.0V fmax Input Frequency CL = 50 pF 0.8 100 ns MHz fmax Input Frequency CL =15pF 300 MHz fmax fmax Input Frequency CL = 5pF 750 MHz Input Frequency CL = 2pF 1125 MHz Notes: 1. See test circuits and waveforms. 2. tpLH, tpHL, tsk(p), and tsk(o) are production tested. All other parameters guaranteed but not production tested. 3. Airflow of 1m/s is recommended for frequencies above 133MHz Potato Semiconductor Corporation 3 01/01/10 PO74G244A www.potatosemi.com OCTAL 3-STATE BUS BUFFERS 74 Series Noise Cancellation GHz Logic Test Waveforms Test Circuit 500Ohm 50Ohm Potato Semiconductor Corporation 50pF to 2pF 50Ohm 4 500Ohm 01/01/10 PO74G244A www.potatosemi.com OCTAL 3-STATE BUS BUFFERS 74 Series Noise Cancellation GHz Logic Packaging Mechanical Drawing: 20 pin TSSOP 20 .169 .177 1 .252 .260 6.4 6.6 .007 .012 0.19 0.30 .0256 BSC 0.65 4.3 4.5 .047 1.20 Max .238 .269 .018 .030 0.45 0.75 SEATING PLANE 6.1 6.7 .004 0.09 .008 0.20 .002 0.05 .006 0.15 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS IC Ordering Information Ordering Code Package Top-Marking TA PO74G244ASU for Tube 20pin TSSOP Pb-free & Green POTATO74G244AS -40 C to 85 C PO74G244ASR for Tape & Reel 20pin TSSOP Pb-free & Green POTATO74G244AS -40 C to 85 C IC Package Information PACKAGE CODE T PACKAGE TYPE TSSOP 20 Potato Semiconductor Corporation TAPE WIDTH (mm) 16 TAPE PITCH (mm) 8 PIN 1 LOCATION TAPE TRAILER LENGTH Top Left Corner 39 (12”) 5 QTY PER REEL TAPE LEADER LENGTH 3000 64 (20”) QTY PER TUBE 74 01/01/10