PI74FCT3244 Fast CMOS 3.3V 8-Bit Buffer/Line Driver Features Description • • • • The PI74FCT3244 is an 8-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, fewer line reflections and lower EMI and RFI. This makes it ideal for driving on-board buses and transmission lines. • • • • • • Advanced Low Power CMOS operation Compatible with LVC class of products Compatible with industry standard octal pinouts Excellent output drive capability: Balanced Drives (24mA sink and source) Can serve as a 5V to 3V translator Inputs can be driven by 3.3 V or 5V devices Low ground bounce outputs Hysteresis on all inputs Industrial operating temperature range: –40°C to +85°C Packaging (Pb-free & Green available): – 20-pin 173-mil wide plastic TSSOP (L) – 20-pin 150-mil wide plastic QSOP (Q) – 20-pin 300-mil wide plastic SOIC (S) The PI74FCT3244 can be driven from either 3.3V or 5.0V devices allowing this device to be used as a translator. Pin Configuration Block Diagram OEA OEB DA0 OA0 OB0 D B0 DA1 OA1 OB1 D B1 DA2 OA2 OB2 D B2 DA3 OA3 OB3 D B3 06-0218 OEA 1 20 VCC DA0 2 19 OEB OB0 3 18 OA0 DA1 4 17 D B0 OB1 5 16 OA1 DA2 6 15 D B1 OB2 7 14 OA2 DA3 8 13 D B2 OB3 9 12 OA3 10 11 D B3 GND 1 PS7067I 06/20/06 PI74FCT3244 3.3V 8-Bit Buffer/Line Driver 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 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 Truth Table(1) OEA L L H Pin Description Inputs OEB L L H DXX L H X Outputs OXX L H Z Pin Name OEA, OEB Note: 1. H = High Voltage Level, X = Don’t Care, L = Low Voltage Level, Z = High Impedance 06-0218 2 Description 3-State Output Enable Inputs (Active LOW) DXX Inputs OXX Outputs GND Ground VCC Power PS7067I 06/20/06 PI74FCT3244 3.3V 8-Bit Buffer/Line Driver DC Electrical Characteristics (TA = –40°C to +85°C, VCC = 2.7V to 3.6V) Parameters VIH Test Conditions(1) Description Input HIGH Voltage (Input pins) Input HIGH Voltage (I/O pins) Guaranteed Logic HIGH Level Min. Typ.(2) Max. 2.2 5.5 2.0 5.5 –0.5 0.8 Input LOW Voltage (Input and I/O pins) Guaranteed Logic LOW Level Input HIGH Current (Input pins) VCC = Max. VIN = 5.5V ±1 Input HIGH Current (I/O pins) VCC = Max. VIN = VCC ±1 Input LOW Current (Input pins) VCC = Max. VIN = GND ±1 Input LOW Current (I/O pins) VCC = Max. VIN = GND ±1 VCC = Max. VOUT = 5.5V ±1 IOZL High Impedance Output Current (3-State Output pins) VCC = Max. VOUT = GND ±1 VIK Clamp Diode Voltage VCC = Min., IIN = –18mA IODH Output HIGH Current VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3) –36 Output LOW Current VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3) 50 VIL IIH IIL IOZH IODL VOH VOL Output HIGH Voltage Output LOW Voltage Current(4) IOS Short Circuit IOFF Power Down Disable VH Input Hysteresis IOH = –0.1mA VCC = Min., VIN = VIH or VIL IOH = –3mA VCC = 3.0V, VIN = VIH or VIL VCC = –1.2 –60 –110 OUT V µA V mA 90 200 VCC-0.2 2.4 3.0 IOH = –8mA 2.4(5) 3.0 IOH = –24mA 2.0 V IOL = 0.1mA VCC = Min., VIN = VIH or VIL Max.(3), V –0.7 Units 0.2 IOL = 16mA 0.2 0.4 IOL = 24mA 0.3 0.5 –85 –240 mA ±100 µA = GND –60 VCC = 0V, VIN or VOUT ≤ 4.5V 150 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. Input Capacitance VIN = 0V 4.5 6 Output Capacitance VOUT = 0V 5.5 8 Units pF Notes: 1. Determined by device characterization. 06-0218 3 PS7067I 06/20/06 PI74FCT3244 3.3V 8-Bit Buffer/Line Driver Power Supply Characteristics Parameters ICC ΔICC ICCD IC Test Conditions(1) Description Quiescent Power Supply Current VCC = Max. VIN = GND or VCC Quiescent Power Supply Current, TTL Inputs HIGH VCC = Max. VIN = VCC – 0.6V(3) Dynamic Power Supply(4) VCC = Max., Outputs Open OEX = GND One Bit Toggling 50% Duty Cycle VIN = VCC VIN = GND VCC = Max., Outputs Open fI = 10 MHZ 50% Duty Cycle OEX = GND One Bit Toggling VIN = VCC – 0.6V VIN = GND VCC = Max., Outputs Open fI = 2.5 MHZ 50% Duty Cycle OEX = GND 8 Bits Toggling VIN = VCC – 0.6V VIN = GND Total Power Supply Current(6) Min. Typ.(2) Max. Units 0.1 10 ΜA 500 µA 95 100 µA/ MHz 0.97 2.3 mA 1.9 4.7(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, TA=+25°C. 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 =IQUIECSENT + 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 06-0218 4 PS7067I 06/20/06 PI74FCT3244 3.3V 8-Bit Buffer/Line Driver Switching Characteristics over Operating Range(1) FCT3244 Parameters Description tPHL tPHL Propagation Delay, DXX to OXX tPZH tPZL Output Enable Time, OEX to OXX tPHZ tPLZ Output Disable Time, OEX to OXX Conditions Com. CL = 50pF RL = 500 Ω Output Skew(3) tSK(o) Units Min.(2) Max. 1.5 4.1 1.5 5.8 1.5 5.2 ns 0.5 Notes: 1. Propagation Delays and Enable/Disable times are with VCC = 3.3V ± 0.3V, normal range. At VCC = 2.7V, all Propagation Delay and Enable/ Disable times are degraded by 20%. 2. Minimum limits are guaranteed by design and characterization. 3. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design and characterization. Packaging Mechanical: 20-pin TSSOP (L) �� ���� ���� � ���� ������ ��� ��� ����� ��� ���� 06-0218 ��� ��� ���� ���� ���� ����� ���� ���� ��� ���� ���� ���� ���� ���� ���� ������� ����� ���� ���� ���� ���� ��� ��� ���� ���� ���� ���� 5 PS7067I 06/20/06 PI74FCT3244 3.3V 8-Bit Buffer/Line Driver Packaging Mechanical: 20-pin Narrow QSOP (Q) 20 .008 0.20 MIN. .150 .157 3.81 3.99 .008 .013 0.20 0.33 Guage Plane .010 0.254 1 Detail A .337 8.56 .344 8.74 0˚-6˚ .016 .035 0.41 0.89 .041 1.04 REF .058 REF 1.47 .053 .069 .015 x 45˚ 0.38 1.35 1.75 Detail A .007 .010 SEATING PLANE .016 .050 .025 BSC 0.635 .004 0.101 .010 0.254 .008 0.203 .012 0.305 0.178 0.254 0.41 1.27 .228 .244 5.79 6.19 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Packaging Mechanical: 20-pin SOIC (S) 20 .2914 .2992 7.40 7.60 .010 .029 0.254 x 45˚ 0.737 1 .496 12.60 .511 12.99 .020 0.508 REF .030 0.762 06-0218 .013 .020 0.33 0.51 0.23 0.32 0.41 .016 1.27 .050 .0926 .1043 2.35 2.65 SEATING PLANE .050 BSC 1.27 .0091 .0125 0-8˚ .0040 .0118 .394 .419 10.00 10.65 0.10 0.30 X.XX DENOTES CONTROLLING X.XX DIMENSIONS IN MILLIMETERS 6 PS7067I 06/20/06 PI74FCT3244 3.3V 8-Bit Buffer/Line Driver Ordering Information Ordering Code Package Code Package Description PI74FCT3244L L 20-pin 173-mil wide plastic TSSOP PI74FCT3244LE L Pb-free & Green, 20-pin 173-mil wide plastic TSSOP PI74FCT3244Q Q 20-pin 150-mil narrow plastic QSOP PI74FCT3244QE Q Pb-free & Green, 20-pin 150-mil narrow plastic QSOP PI74FCT3244S S 20-pin 300-mil wide plastic SSOP PI74FCT3244SE S Pb-free & Green, 20-pin 300-mil wide plastic SSOP 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 • http://www.pericom.com 06-0218 7 PS7067I 06/20/06