PI74AUC16244 1.8V 16-Bit Buffer/Driver with 3-State Outputs Features Description • PI74AUC16244 is designed for low-voltage operation, VCC = 0.8V to 2.7V, optimized at 1.8V. Pericom Semiconductor’s PI74AUC series of logic circuits are produced using the Company’s advanced submicron CMOS technology, achieving industry leading speeds. • 3.6V I/O Tolerant inputs and outputs The PI74AUC16244 is a 16-bit buffer driver 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 non-inverting 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 pull-up resistor; the minimum value of the resistor is determined by the current-sinking ability of the driver. • IOFF supports partial power-down operation • Latch-Up Performance exceeds 100mA per JESD 78 • ESD Protection Exceeds JESD 22 – 2000V Human-Body Model (A114-B) – 200V Machine Model (A115-A) • Industrial operation: –40°C to +85°C • Packaging: – 48-pin TSSOP (A) – 48-pin TSSOP (K) The PI74AUC16244 is specified for partial power down applications using IOFF. The IOFF circuitry disables the outputs preventing current backflow through the device when it is powered down. Block Diagram 1OE 1A1 1A2 1A3 1A4 2OE 2A1 2A2 1 3OE 25 1 Y1 3A1 36 13 Y 3 1 47 2 46 3 1 Y2 3A2 35 14 44 5 Y 1 3 3A3 33 16 3Y3 43 6 3A4 32 17 Y 3 4 1 Y4 48 4OE 41 8 40 9 19 Y 4 1 29 20 4A3 27 22 4Y3 4A4 26 23 4A1 2Y1 4A2 38 11 2Y2 2A4 37 12 2Y3 A 24 30 2Y0 2A3 3Y2 4Y2 4Y4 PS8731 08/16/04 PI74AUC16244 1.8V 16-Bit Buffer Driver with 3-State Outputs Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Notes: 1. Input negative voltage & output voltage ratings may be exceeded if the input and output current rating are observed. 2. This value is limited to 3.6V maximium. 3. The package thermal impedance is calculated in accordance with JESD 51. 4. 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. Supply voltage range, VCC .................................. –0.5V to +3.6V Input voltage range, VI(1) ..................................... –0.5V to +3.6V Voltage range applied to any output in the high-impedance or power-off state, VO(1) .... –0.5V to +3.6V Output voltage range VO(1, 2) ............... –0.5V to VCC +0.5V Input clamp current, IIK (VI < 0) .................................. –50mA Output clamp current, IOK (VO < 0) ............................. –50mA Continuous output current, IO .................................... ±20mA Continuous current through each VCC or GND ......... ±100mA Package thermal impedance, θJA(3): package A........ 104°C/W package K........ 107°C/W Storage Temperature range, Tstg ....................–65°C to 150°C Pin Description Pin Configuration Pin Name Description ��� � �� ��� XOE 3-State Output Enable Inputs (Active LOW) ��� � �� ��� � �� ��� XAX Inputs ��� ��� � �� ��� XYX 3-State Outputs ��� � �� ��� GND Ground ��� � �� ��� VCC Power ��� � �� ��� ��� � �� ��� ��� � �� ��� ��� �� �� ��� ��� �� �� ��� XOE XAX XYX ��� �� �� ��� L H H ��� �� �� ��� L L L ��� �� �� ��� ��� �� �� ��� H X ��� �� �� ��� ��� �� �� ��� ��� �� �� ��� ��� �� �� ��� ��� �� �� ��� ��� �� �� ��� ��� �� �� ��� ��� �� �� ��� ��� �� �� ��� Truth Table Inputs Outputs Note: 1. H = High Signal Level, L = Low Signal Level X = Don’t Care or Irrelevant, Z = High Impedance 2 PS8731 08/16/04 PI74AUC16244 1.8V 16-Bit Buffer Driver with 3-State Outputs Recommended Operating Conditions(1) Parameters VCC Description Operating Conditions SupplyVoltage VCC = 0.8V VIH High-Level Input Voltage Min. Max. 0.8 2.7 VCC VCC = 1.1V to 1.95V 0.65 x VCC VCC = 2.3V to 2.7V 1.7 VCC = 0.8V VIL Low-Level Input Voltage VI Input Voltage VO Output Voltage Units 0 VCC = 1.1V to 1.95V 0.35 x VCC VCC = 2.3V to 2.7V 0.7 0 3.6 Active State 0 VCC 3-state 0 3.6 V VCC = 0.8V VCC = 1.1V IOH High-Level Output Current VCC = 1.4V VCC = 1.65V VCC = 2.3V mA VCC = 0.8V VCC = 1.1V IOL Low-Level Output Current VCC = 1.4V VCC = 1.65V VCC = 2.3V ∆t/∆v Input Transition Rise or Fall Rate TA Operating Free-Air Temperature -40 5 ns/V 85 °C Note: 1. All unused inputs must be held at VCC or GND to ensure proper device operation. 3 PS8731 08/16/04 PI74AUC16244 1.8V 16-Bit Buffer Driver with 3-State Outputs DC Electrical Characteristics (Over the Operating Range, TA = –40°C +85°C) Test Conditions(1) Parameters Typ.(1) VCC Min. IOH = -100µA 0.8V to 2.7V VCC -0.1V IOH = -0.7mA 0.8V IOH = -3mA 1.1V 0.8 IOH= -5mA 1.4V 1 IOH = -8mA 1.65V 1.2 IOH = -9mA 2.3V 1.8 IOL = 100µA 0.8V to 2.7V IOL = 0.7mA 0.8V IOL = 3mA 1.1V 0.3 IOL = 5mA 1.4V 0.4 IOL = 8mA 1.65V 0.45 IOL = 9mA 2.3V 0.6 VI = VCC or GND 0 to 2.7V ±5 IOFF VI or VO = 2.7V 0V ±10 IOZ VO = VCC or GND 0.8V to 2.7V ±10 ICC VI = VCC or GND, IO = 0 0.8V to 2.7V 20 CI VI = VCC or GND 2.5V 3 CO VO = VCC or GND 2.5V 4 VOH VOL II (2) Max. Units 0.55 V 0.2 0.25 µA pF Note: 1. Typical values are measured at TA = 25°C. 2. II - A Port or OE inputs. Switching Characteristics (Over recommended operating free-air temperature range, unless otherwise noted, see Figure 1) Parameters From To (Input) (Output) VCC = 0.8V VCC = 1.2V ± 0.1V VCC = 1.5V ± 0.1V VCC = 1.8V ± 0.15V VCC = 2.5V ± 0.2V Typ. Min. Max. Min. Max. Min. Typ. Max. Min. Max. tpd A Y 5.4 0.8 2.8 0.6 1.9 0.7 1.3 1.8 0.5 1.8 ten OE Y 8 1 4.4 0.7 2.6 0.8 1.4 2.5 0.6 1.9 tdis OE Y 12 1.9 4.9 1 4.6 1.5 2.6 4 0.5 3 Units ns Operating Characteristics, TA= 25°C Parameters Cpd Power Dissipation Capacitance Outputs Enabled Outputs Disabled Test Conditions CL = 0pF, f = 10 MHz VCC = 0.8V VCC = 1.2V VCC = 1.5V VCC = 1.8V VCC = 2.5V Typical Typical Typical Typical Typical 21 22 23 25 30 Units pF 1 1 4 1 1 1 PS8731 08/16/04 PI74AUC16244 1.8V 16-Bit Buffer Driver with 3-State Outputs Parameter Measurement Information From Output Under Test CL (See Note 1) 2xVCC Open GND S1 RL RL Load Circuit VCC Timing Input VCC/2 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 2 x VCC GND VCC CL RL V∆ 0.8V 1.2V ± 0.1V 1.5V ± 0.1V 1.8V ± 0.15V 2.5V ± 0.2V 15pF 15pF 15pF 30pF 30pF 2kΩ 2kΩ 2kΩ 1kΩ 500Ω 0.1V 0.1V 0.1V 0.15V 0.15V th tW VCC VCC Data Input VCC/2 VCC/2 Voltage Waveforms Pulse Duration Output Control (Low Level Enabling) VCC VCC/2 tPLH tPHL 0V Output tPHL VCC/2 VOL tPLH VCC /2 Output Waveform 2 S1 at GND (see Note 2) VOH VCC /2 VCC VCC/2 tPZL Output Waveform 1 S1 at 2 x VCC (see Note 2) t PZH VOH VCC /2 VCC/2 0V 0V VCC/2 VCC/2 Input Voltage Waveforms Setup and Hold Times Output S1 0V tsu Input Test VOL Voltage Waveforms Propagation Delay Times VCC/2 0V tPLZ VCC VCC/2 VOL +V∆ VOL tPHZ VCC/2 VOH –V∆ VOH 0V Voltage Waveforms Enable and Disable Times Figure 1. Load Circuit and Voltage Waveforms Notes: 1. CL includes probe and jig capacitance. 2. 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. 3. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50Ω, slew rate ≥ 1V/ns 4. The outputs are measured one at a time with one transition per measurement. 5. tPLZ and tPHZ are the same as tdis 6. tPZL and tPZH are the same as ten 7. tPLH and tPHL are the same as tpd 8. All parameters and waveforms are not applicable to all devices. 5 PS8731 08/16/04 PI74AUC16244 1.8V 16-Bit Buffer Driver with 3-State Outputs Packaging Mechanical: 48-pin TSSOP (A) 48 .236 .244 1 6.0 6.2 .488 12.4 .496 12.6 .047 1.20 Max SEATING PLANE .004 0.09 .008 0.20 X.XX X.XX .0197 BSC 0.50 DENOTES DIMENSIONS IN MILLIMETERS 0.45 .018 0.75 .030 .002 .006 0.05 0.15 .007 .010 0.17 0.27 .319 BSC 8.1 Packaging Mechanical: 48-pin TSSOP (K) 48 .169 .177 4.30 4.50 .0035 .008 .031 .041 0.80 1.05 1 .378 9.60 .386 9.80 0.09 0.20 0.45 .018 0.75 .030 .252 BSC 6.4 SEATING PLANE X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .016 BSC 0.40 .002 .006 0.05 0.15 .0051 .009 0.13 0.23 6 Max. .047 1.20 PS8731 08/16/04 PI74AUC16244 1.8V 16-Bit Buffer Driver with 3-State Outputs Ordering Information Ordering Code Packaging Code Package Description PI74AUC16244A A 48-pin TSSOP PI74AUC16244K K 48-pin TVSOP 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 7 PS8731 08/16/04