PI74LPT16244AAEX

Obsolete – Part Discontinued PI74LPT16244 3.3V, 16-Bit Buffer/Line Driver Features Description • Compatible with LCX and LVT families of products • Supports 5V Tolerant Mixed Signal Mode Operation – Input can be 3V or 5V – Output can be 3V or connected to 5V bus • Advanced Low Power CMOS Operation • Excellent output drive capability: – Balanced drives (24mA sink and source) • Pin compatible with industry standard double-density pinouts • Low ground bounce outputs Pericom Semiconductor’s PI74LPT16244 is a 16-bit buffer/line driver designed for driving high capacitive memory loads. With its balanced-drive characteristics, this high-speed, low power device provides lower ground bounce, transmission line matching of signals, fewer line reflections and lower EMI and RFI effects. This makes it ideal for driving on-board buses and transmission lines. This device is designed with three-state controls to operate in a Quad-Nibble, Dual-Byte, or a single 16-bit word mode. The PI74LPT16244 can be driven from either 3.3V or 5.0V devices allowing this device to be used as a translator in a mixed 3.3/5.0V system. • Hysteresis on all inputs • Industrial operating temperature range: –40°C to +85°C • Multiple center pins and distributed Vcc/GND pins minimize switching noise • Packaging (Pb-free & Green): – 48-pin 240-mil wide thin plastic TSSOP (A) Block Diagram 1OE 3OE 1A0 1 1Y0 3A0 3 3Y0 1A1 1 1Y1 3A1 3 3Y1 1A2 1 1Y2 3A2 3 3Y2 1A3 1 1Y3 3A3 3 3Y3 2OE 4OE 2A0 2 2Y0 4A0 4 4Y0 2A1 2 2Y1 4A1 4 4Y1 2A2 2 2Y2 4A2 4 4Y2 2A3 2 2Y3 4A3 4 4Y3 1 PS2067H 07/30/10 PI74LPT16244 3.3V, 16-Bit Buffer/Line Driver Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature............................................................. –55°C to +125°C Ambient Temperature with Power Applied............................ –40°C to +85°C Supply Voltage to Ground Potential (Inputs & VCC Only)......–0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only)...–0.5V to +7.0V DC Input Voltage.....................................................................–0.5V to +7.0V DC Output Current............................................................................... 120 mA 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. Power Dissipation.................................................................................... 1.0W Product Pin Configuration Truth Table 1OE 1 48 2OE 1Y0 2 47 1A0 1Y1 3 46 1A1 GND 4 45 GND 1Y2 5 44 1A2 1Y3 6 43 1A3 VCC 7 42 VCC 2Y0 8 41 2A0 2Y1 9 40 2A1 GND 10 39 GND 2Y2 11 2Y3 12 3Y0 3Y1 48-Pin 38 A, V 2A3 13 36 3A0 14 35 3A1 GND 15 34 GND 3Y2 16 33 3A2 3Y3 17 32 3A3 VCC 18 31 VCC 4Y0 19 30 4A0 4Y1 20 29 4A1 GND 21 28 GND 4Y2 22 27 4A2 4Y3 23 26 4A3 4OE 24 25 3OE Outputs(1) xOE xA x xYx L L L L H H H X Z Notes: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance 2A2 37 Inputs(1) Product Pin Description Pin Name xOE xAx xYx GND VCC 2 Description 3-State Output Enable Inputs (Active LOW) Inputs 3-State Outputs Ground Power PS2067H 07/30/10 PI74LPT16244 3.3V, 16-Bit Buffer/Line Driver Capacitance (TA = 25°C, f = 1 MHz) Parameters(1) Description Test Conditions Typ Max. CIN Input Capacitance VIN = 0V 3 6 COUT Output Capacitance VOUT = 0V 3 8 Units pF Notes: 1. This parameter is determined by device characterization but is not production tested. DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 2.7V to 3.6V) Parameters Description IOZH IOZL VIK Input HIGH Voltage (Input pins) Input HIGH Voltage (I/O pins) Input LOW Voltage (Input and I/O pins) Input HIGH Current (Input pins) Input HIGH Current (I/O pins) Input LOW Current (Input pins) Input LOW Current (I/O pins) High Impedance Output Current (3-State Output pins) Clamp Diode Voltage IOHD Output HIGH Current IODL Output LOW Current VIH VIL IIH IIL VOH Output HIGH Voltage VOL Output LOW Voltage IOS IOFF Short Circuit Current(4) Power Down Disable Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level Vcc = Max. Vin = 5.5V Vcc = Max. Vin = Vcc Vcc = Max. Vin = GND Vcc = Max. Vin = GND Vcc = Max. Vout = 5.5V Vcc = Max. Vout = GND Vcc = Min., Iin = –18 mA Vcc = 3.3V, Vin = Vih or Vil, Vo = 1.5V(3) Vcc = 3.3V, Vin = Vih or Vil, Vo = 1.5V(3) Ioh = –0.1 mA Vcc = Min. Vin = Vih or Vil Ioh = –3 mA Vcc = 3.0V, Ioh = –8 mA Vin = Vih or Vil Ioh = –24 mA Iol = 0.1 mA Vcc = Min. Iol = 16 mA Vin = Vih or Vil Iol = 24 mA (3) Vcc = Max. , Vout = GND Vcc = 0V, Vin or Vout ≤ 4.5V Min. Typ(2) Max. 2.2 2.0 5.5 5.5 –0.5 0.8 –36 –0.7 ±1 ±1 ±1 ±1 ±1 ±1 –1.2 –60 –110 Units V µA V mA 50 90 Vcc-0.2 2.4 2.4(5) 2.0 3.0 3.0 –60 200 V 0.2 0.3 –85 0.2 0.4 0.5 –240 ±100 mA µA Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at Vcc = 3.3V, +25°C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. This parameter is guaranteed but not tested. 5. VOH = VCC – 0.6V at rated current. 3 PS2067H 07/30/10 PI74LPT16244 3.3V, 16-Bit Buffer/Line Driver Power Supply Characteristics   Test Conditions(1) Max. 0.1 10 Description Icc Quiescent Power Supply Current Vcc = Max. Vin = GND or Vcc ΔIcc Quiescent Power Supply Current TTL Inputs HIGH Vcc = Max. Vin = Vcc – 0.6V(3) Dynamic Power Supply(4) Vcc = Max., Outputs Open xOE = GND One Bit Toggling 50% Duty Cycle Vin = Vcc Vin = GND 50 75 Vcc = Max., Outputs Open fi = 10 MHz 50% Duty Cycle xOE = GND One Bit Toggling Vin = Vcc – 0.6V Vin = GND 0.5 0.8 Vcc = Max., Outputs Open fi = 2.5 MHz 50% Duty Cycle xOE = GND 16 Bits Toggling Vin = Vcc – 0.6V Vin = GND Iccd Ic Total Power Supply Current(6) Min. Typ(2) Parameters 500 Units µA µA/ MHz mA 2.0 3.3(5) Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at Vcc = 3.3V, +25°C ambient. 3. Per TTL driven input; all other inputs at Vcc or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested. 6. Ic =Iquiescent + Iinputs + Idynamic Ic = Icc + ΔIcc DhNt + Iccd (fcp/2 + fiNi) Icc = Quiescent Current (Iccl, Icch and Iccz) ΔIcc = Power Supply Current for a TTL High Input Dh = Duty Cycle for TTL Inputs High Nt = Number of TTL Inputs at Dh Iccd = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fcp = Clock Frequency for Register Devices (Zero for Non-Register Devices) Ncp = Number of Clock Inputs at fcp fi = Input Frequency Ni = Number of Inputs at fi All currents are in milliamps and all frequencies are in megahertz. 4 PS2067H 07/30/10 PI74LPT16244 3.3V, 16-Bit Buffer/Line Driver Switching Characteristics over Operating Range(1) LPT16244 Parameters Description tPLH tPHL Propagation Delay xAx to xYx tPZH tPZL Output Enable Time xOE to xYx Conditions tPHZ tPLZ Output Disable Time(3) xOE to xYx tSK(o) Output Skew(4) LPT16244A Com. CL = 50 pF RL = 500Ω Min(2) LPT16244C Com. Max. Min(2) 1.5 5.2 1.5 1.5 Com. Units Max. Min(2) Max. 1.5 4.8 1.5 4.1 7.0 1.5 6.2 1.5 5.8 7.0 1.5 5.6 1.5 5.2 0.5 0.5 ns 0.5 Notes: 1. Propagation Delays and Enable/Disable times are with Vcc = 3.3V ±0.3V, normal range. For Vcc = 2.7V, extended range, all Propagation Delays and Enable/Disable times should be degraded by 20%. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. This parameter is guaranteed but not production tested. 4. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design. Packaging Mechanical: 48-pin TSSOP (A) DOCUMENT CONTROL NO. PD - 1501 48 REVISION: G DATE: 03/09/05 .236 .244 6.0 6.2 See Note 4 1 .488 12.4 .496 12.6 See Note 3 .047 1.20 Max SEATING PLANE 1 .004 0.09 .008 0.20 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .0197 BSC 0.50 .002 .006 0.05 0.15 .007 .010 0.17 0.27 Note: 1. Controlling dimensions in millimeters. 2. Ref: JEDEC MO-153F/ED 3. Dimension does not include mold flash, protrusions or gate burrs. Mold flash, protrusions and gate burrs shall not exceed 0.15mm per side. 4. Dimension does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25mm per side. 0.45 .018 0.75 .030 .319 BSC 8.1 Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 • www.pericom.com DESCRIPTION: 48-Pin 240-Mil Wide TSSOP PACKAGE CODE: A 5 PS2067H 07/30/10 PI74LPT16244 3.3V, 16-Bit Buffer/Line Driver Ordering Information Ordering Code PI74LPT16244AE PI74LPT16244AAE PI74LPT16244CAE Package Code A A A Description Pb-free & Green, 48-pin 240 mil wide plastic TSSOP Pb-free & Green, 48-pin 240 mil wide plastic TSSOP Pb-free & Green, 48-pin 240 mil wide plastic TSSOP Notes: • Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ • E = Pb-free & Green • Adding an X suffix = Tape/Reel Pericom Semiconductor Corporation •  1-800-435-2336 • www.pericom.com 6 PS2067H 07/30/10