PI74LPT240 Fast CMOS 3.3V 8-Bit Inverting Buffer Line Driver 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74LPT240 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 3.3V 8-Bit Inverting Buffer/Line Driver Product Features Product 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) Low ground bounce outputs Hysteresis on all inputs Industrial operating temperature range: 40°C to +85°C Packages available: 20-pin 173 mil wide plastic TSSOP (L) 20-pin 150 mil wide plastic QSOP (Q) 20-pin 150 mil wide plastic TQSOP (R) 20-pin 300 mil wide plastic SOIC (S) Pericom Semiconductors PI74LPT series of logic circuits are produced using the Companys advanced 0.6 micron CMOS technology, achieving industry leading speed grades. Logic Block Diagram DA0 OEA OB0 OEB DA1 OB1 OA0 DA2 OB2 OB0 The PI74LPT240can 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. Product Pin Configuration OEA DA0 The PI74LPT240 is an 8-bit inverting 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. DA3 DB0 OB3 DA1 OA1 OB1 DB1 DA2 OA2 OB2 DB2 DA3 OA3 OB3 DB3 GND 1 20 2 19 3 18 4 17 20-Pin 5 16 L,Q 6 R,S 15 7 14 8 13 9 12 10 11 VCC Product Pin Description Pin Name OEA, OEB OEB OA0 DB0 OA1 DB1 OA2 Dxx Oxx GND VCC Description 3-State Output Enable Inputs (Active LOW) Inputs Outputs Ground Power DB2 OA3 DB3 Truth Table(1) OEA L L H Inputs OEB L L H DXX L H X Outputs OXX H L Z Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance Powered by ICminer.com Electronic-Library Service CopyRight 2003 1 PS8476 04/26/00 PI74LPT240 Fast CMOS 3.3V 8-Bit Inverting Buffer Line Driver 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ................................................................ 65°C to +150°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 Power Dissipation ......................................................................................1.0W 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. DC Electrical Characteristics (Over the Operating Range, TA = 40°C to +85°C, VCC = 2.7V to 3.6V) Parameters Description IOZH IOZL VIK IODH IODL VOH 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 Output HIGH Current Output LOW Current Output HIGH Voltage VOL Output LOW Voltage IOS IOFF VH Short Circuit Current(4) Power Down Disable Input Hysteresis VIH VIL IIH IIL 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) VCC = Min. IOH = 0.1 mA VIN = VIH or VIL IOH = 3 mA VCC = 3.0V, IOH = 8 mA VIN = VIH or VIL IOH = 24 mA VCC = Min. IOL = 0.1 mA VIN = VIH or VIL IOL = 16 mA IOL = 24 mA VCC = Max.(3), VOUT = GND 60 VCC = 0V, VIN or VOUT ≤ 4.5V Min. Typ(2) Max. Units 2.2 2.0 0.5 5.5 5.5 0.8 V V V 36 50 Vcc-0.2 2.4 2.4(5) 2.0 85 0.7 60 90 3.0 3.0 0.2 0.3 240 150 ±1 ±1 ±1 ±1 ±1 ±1 1.2 110 200 0.2 0.4 0.5 mA ±100 µA µA µA µA µA µA V mA mA V V V V V V µA mV 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. Capacitance (TA = 25°C, f = 1 MHz) Parameters(1) CIN COUT Description Test Conditions Typ Max. Units Input Capacitance Output Capacitance VIN = 0V VOUT = 0V 4.5 5.5 6 8 pF pF Note: 1. This parameter is determined by device characterization but is not production tested. Powered by ICminer.com Electronic-Library Service CopyRight 2003 2 PS8476 04/26/00 PI74LPT240 Fast CMOS 3.3V 8-Bit Inverting Buffer Line Driver 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Parameters Description ICC ∆I CC I CCD IC Quiescent Power Supply Current Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply(4) Total Power Supply Current(6) Test Conditions(1) VCC = Max. Min. VIN = GND or VCC (3) Typ(2) Max. Units 0.1 10 µA 2.0 30 µA 75 µA/ MHz VCC = Max. VIN = VCC 0.6V VCC = Max., Outputs Open OEX = GND One Bit Toggling 50% Duty Cycle VIN = VCC VIN = GND 50 VCC = Max., Outputs Open fI = 10 MHZ 50% Duty Cycle OEX = GND One Bit Toggling VIN = VCC 0.6V VIN = GND 0.6 VCC = Max., Outputs Open fI = 2.5 MHZ 50% Duty Cycle OEX = GND 8 Bits Toggling VIN = VCC 0.6V VIN = GND 2.3 mA 1 2 3 4 5 2.1 4.7(5) 6 7 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 + ∆ICC DHNT + ICCD (fCP/2 + fINI) ICC = Quiescent Current (ICCL, ICCH and ICCZ) ∆ICC = 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. 8 9 10 11 12 13 14 15 Powered by ICminer.com Electronic-Library Service CopyRight 2003 3 PS8476 04/26/00 PI74LPT240 Fast CMOS 3.3V 8-Bit Inverting Buffer Line Driver 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Switching Characteristics over Operating Range(1) LPT240 LPT240A Com. Com. Com. Description Conditions(2) t PLH t PHL Propagation Delay DXX to OXX CL = 50pF RL = 500Ω t PZH t PZL Output Enable Time OEx to Oxx 1.5 8.0 1.5 6.2 1.5 5.8 ns t PHZ t PLZ Output Disable Time(4) OEx to Oxx 1.5 7.0 1.5 5.6 1.5 5.2 ns tSK(o) Output Skew(5) 0.5 ns Parameters Min.(3) LPT240C Max. Min.(3) Max. Min.(3) 1.5 6.5 1.5 4.8 1.5 4.3 ns 0.5 0.5 Max. Units 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. See test circuit and waveforms. 3. Minimum limits are guaranteed but not tested on Propagation Delays. 4. This parameter is guaranteed but not production tested. 5. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design. Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com Powered by ICminer.com Electronic-Library Service CopyRight 2003 4 PS8476 04/26/00