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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs Features * The PI74VCX Family is designed for low voltage operation, CD = 1.8V to 3.6V * 3.6V Tolerant Inputs and Outputs * Supports Live Insertion * Balanced Drive, 24mA * Uses patented Noise Reduction Circuitry * Typical VOLP (Output Ground Bounce) <0.6V at VDD = 2.5V, TA = 25C * Typical VOHV (Output VOH Undershoot) < -0.6V at VDD = 2.5V, TA = 25C * Power-Off high impedance inputs and outputs * Industrial operation at -40C to +85C * Packaging (Pb-free & Green available): - 48-pin 240-mil wide plastic TSSOP (A) Description Pericom Semiconductor's PI74VCX16244 buffer/driver is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. It provides true outputs and symmetrical active-low output-enable (OE) inputs. To ensure the high-impedance state during power up or power down, OE should be tied to Vcc through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The PI74VCX family is I/O Tolerant, allowing it to operate in 1.8/3.6V systems. Block Diagram 1OE 1 3OE 25 1A1 47 2 1Y1 3A1 36 13 3Y1 1A2 46 3 1Y2 3A2 35 14 3Y2 1A3 44 5 1Y3 3A3 33 16 3Y3 1A4 43 6 1Y4 3A4 32 17 3Y4 2OE 48 4OE 24 2A1 41 8 2Y1 4A1 30 19 4Y1 40 2A2 9 29 2Y2 4A2 20 4Y2 2A3 38 11 27 2Y3 4A3 22 4Y3 2A4 37 12 26 2Y4 4A4 23 4Y4 1 PS8160C 09/27/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs Pin Description Pin Name nOE nAx nYx GND VCC Description 3-State Output Enable Inputs (Active LOW) Inputs 3-State Outputs Ground Power Truth Table(1) Inputs nOE L L H nAX H L X Outputs nYx H L Z Pin Configuration Notes: 1. H = High Signal Level L = Low Signal Level X = Don't Care or Irrelevant Z = High Impedance 1OE 1Y1 1Y2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 2OE 1A1 1A2 GND 1Y3 1Y4 GND 1A3 1A4 VCC 2Y1 2Y2 VCC 2A1 2A2 GND 2Y3 2Y4 3Y1 3Y2 GND 2A3 2A4 3A1 3A2 GND 3Y3 3Y4 GND 3A3 3A4 VCC 4Y1 4Y2 VCC 4A1 4A2 GND 4Y3 4Y4 4OE GND 4A3 4A4 3OE 2 PS8160C 09/27/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Supply Voltage Range, VDD ........................................... 0.5V to 4.6V Input Voltage Range, VI ............................................... -0.5V to 4.6V Output Voltage Range, VO (3-Stated) ........................... -0.5V to 4.6V Output Voltage Range, VO(1) (Active) ..................... -0.5V to VCC+0.5 DC Input Diode Current (IIK) VI<0V ...................................... -50mA DC Output Diode Current (IOK) VO<0V .................................................................................. -50mA VO>VDD ............................................................................... +50mA DC Output Source/Sink Current (IOH/IOL) .............................. 50mA DC VDD or GND Current per Supply Pin (ICC or GND) ...... 100mA Storage Temperature Range, Tstg .............................. -65C to 150C Note: Stresses greater than those 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. Recommended Operating Conditions(2) M in. VDD VIH VIL VI VO Supply voltage High- level input voltage Low- level input voltage Input voltage Output voltage Active State Off State VDD = 3.0V to 3.6V VDD = 2.3V to 2.7V VDD = 1.8V 0 -40 Operating Data Retention Only VDD = 2.7V to 3.6V VDD = 2.7V to 3.6V - 0.3 0 0 1.8 1.2 2.0 0.8 3.6 VDD 3.6 24 18 6 10 85 mA ns/V C V M a x. 3.6 3.6 Units IO t/v TA Output current in IOH/IOL Input transistion rise or fall rate(3) Operating free- air temperature Notes 1. Absolute maximum of IO must be observed. 2. Unused control inputs must be held HIGH or LOW to prevent them from floating. 3 As measured between 0.8V and 2.0V, VDD = 3.0V. 3 PS8160C 09/27/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs Electrical Characteristics over Recommended Operating Free-Air Temperature Range (unless otherwise noted) DC Characteristics (2.7V 4 PS8160C 09/27/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs Electrical Characteristics over Recommended Operating Free-Air Temperature Range (unless otherwise noted) (continued from previous page) DC Characteristics (2.3V VDD 2.7V) Parame te rs VIH VIL HIGH Level Input Voltage LOW Level Input Voltage IOH = - 100A VOH HIGH Level Output Voltage IOH = - 6mA IOH = - 12mA IOH = - 18mA IOL = 100A VOL LOW Level Output Voltage IOL = 12mA IOL = 18mA II IOZ IOFF IDD Input Leakage Current 3- STATE Output Leakage Power- OFF Leakage Current Quiescent Supply Current VI = 0.0V, VI = 2.7V 0 VO 3.6V VI = VIH or VIL 0 (VI,VO) 3.6V VI = VDD or GND VDD (VI,VO) 3.6V 2.3 - 2.7 2.3 2.7 2.3 - 2.7 0 2.3 - 2.7 2.3 2.3 - 2.7 VDD - 0.2 2.0 1.8 1.7 0.2 0.4 0.6 5.0 10 10 20 20 A V Conditions VDD M in. 1.6 0.7 Typ. M ax. Units DC Characteristics (1.8V VDD 2.3V) Parame te rs VIH VIL VOH HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage IOH = - 100 A IOH = - 6 mA VOL LOW Level Output Voltage IOL = 100 A IOL = 6 mA II IOZ IOFF IDD Input Leakage Current 3- STATE Output Leakage VI = 0.0V, VI = 1.8V 0 VO 3.6V VI = VIH or VIL 0 1.8 1.8 1.8 Conditions VDD 1. 8 - 2 . 3 M in. 0.7 x VDD 0.2 x VDD VDD - 0.2 1.4 0.2 0.3 5.0 10 10 20 20 A V Typ. M a x. Units Power- OFF Leakage Current 0 (VI,VO) 3.6V Quiescent Supply Current VI = VDD or GND VDD (VI,VO) 3.6V 5 PS8160C 09/27/04 Dynamic Switching Characteristics Symbol Parame te r Conditions VDD 1.8 2.5 3.3 1.8 2.5 3.3 1.8 2.5 3.3 TA= +25C Typical 0.25 0.6 0.8 - 0.25 - 0.6 - 0.8 1.5 1.9 2.2 V Units 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs AC Electrical Characteristics(1) TA = -40C to +85C, CL = 30pF, RL = 500 Symbol Parame te r VDD = 3.3V 0.3V M in. tPHL, tPLH tPZL, tPZH tPLZ, tPHZ tOSHL tOSLH Prop Delay Output Enable Time Output Disable Time Output to Output Skew(2) 0.8 0.8 0.8 M a x. 2.5 3.5 3.5 0.5 VDD = 2.5V 0.2V M in. 1.0 1.0 1.0 M a x. 3.0 4.1 3.8 0.5 VDD = 1.8V M in. 1.5 1.5 1.5 M a x. 5.0 6.5 5.0 0.5 ns Units Notes 1. For CL = 50pF add approximatly 300ps to AC maximum specification 2. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH or LOW (tOSHL) or LOW to HIGH (tOSLH). VOLP Quiet Output Dynamic Peak VOL CL = 50pF, VIH= VDD, VIL= 0V VOLV Quiet Output Dynamic Valley VOL CL = 50pF, VIH= VDD, VIL= 0V VOHV Quiet Output Dynamic Valley VOH CL = 50pF, VIH= VDD, VIL= 0V Capacitance Symbol CIN COUT Parame te r Input Capacitance Output Capacitance Conditions VDD = 1.8V, 2.5V or 3.3V, V1 = 0V or VDD V1 = 0V or VDD, VDD = 1.8V, 2.5V or 3.3V V1 = 0V or VDD, F = 10MHz VDD = 1.8V, 2.5V or 3.3V TA = +25C Typical 6 7 Units pF CPD Power Dissipation Capacitance 20 6 PS8160C 09/27/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs Test Circuits and Switching Waveforms Parameter Measurement Information (VDD = 1.8V - 3.6V) 2 x VDD R1 500 Open 50pF 3 CL (See Note A) Switch Position Te s t tpd tPLZ/tPZL tPHZ/tPZH S1 Open 2 x VDD GND From Output Under Test RL 500 GND Pulse Width VDD Low-High-Low Pulse tW VDD High-Low-High Pulse VDD/2 0V VDD/2 0V Setup, Hold, and Release Timing Data Input tSU Timing Input tH VDD VDD/2 0V VDD VDD/2 0V Propagaton Delay Input tPLH Output tPHL tPLH tPHL VDD VDD/2 0V VDD VDD/2 VOL VDD Notes: A. CL includes probe and jig capacitance. B. 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. C. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50, tr 2ns, tf 2ns, measured from 10% to 90%, unless otherwise specified. D. The outputs are measured one at a time with one transition per measurement. Opposite Phase Input Transition VDD/2 0V Enable Disable Timing VDD Output Control (Active LOW) VDD/2 tPZL VDD VDD/2 +0.15V tPZH VDD/2 0V tPHZ -0.15V VOH VOL tPLZ 0V VDD Output Waveform 1 S1 at 2xVDD (see Note B) Output Waveform 2 S1 at GND (see Note B) 7 PS8160C 09/27/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs Packaging Mechanical: 48-pin TSSOP (A) 48 .236 .244 6.0 6.2 1 .488 12.4 .496 12.6 .047 1.20 Max SEATING PLANE .004 0.09 .008 0.20 0.45 .018 0.75 .030 .319 BSC 8.1 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .0197 BSC 0.50 .007 .010 0.17 0.27 .002 .006 0.05 0.15 Ordering Information Ordering Code PI74VCX16244A PI74VCX16244AE Package Code A A Package Description 48-pin TSSOP Pb-free & Green, 48-pin TSSOP Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com 8 PS8160C 09/27/04 |
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