PI74LPT V, 16-Bit Buffer/Line Driver. Features. Description. Block Diagram

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1 Features 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 Hysteresis on all inputs Industrial operating temperature range: 40 C to +85 C Multiple center pins and distributed Vcc/ pins minimize switching noise Packaging (Pb-free & Green available): 48-pin 240-mil wide thin plastic TSSOP (A) 48-pin 300-mil wide plastic SSOP (V) Description Pericom Semiconductor s PI74LPT6244 is a 6-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 6-bit word mode. The PI74LPT6244 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. Block Diagram OE 3OE A 0 Y 0 3A Y 0 A Y 3A 3 3 Y A 2 Y 2 3A Y 2 A 3 Y 3 3A Y 3 2OE 4OE 2A Y 0 4A Y 0 2A 2 2 Y 4A 4 4 Y 2A Y 2 4A Y 2 2A Y 3 4A Y 3

2 Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature C to +25 C Ambient Temperature with Power Applied C to +85 C Supply Voltage to Ground Potential (Inputs & V CC Only) V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only).. 0.5V to +7.0V DC Input Voltage V to +7.0V DC Output Current ma Power Dissipation....0W Note: Stresses greater than those listed under MAX I MUM RAT- INGS may cause permanent damage to the de vice. This is a stress rating only and func tion al op er a tion 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. Product Pin Configuration Truth Table Inputs () Outputs () OE Y0 Y Y2 Y3 2Y0 2Y 2Y2 2Y3 3Y0 3Y 3Y2 3Y3 4Y0 4Y 4Y2 4Y3 4OE Pin A, V OE A0 A A2 A3 2A0 2A 2A2 2A3 3A0 3A 3A2 3A3 4A0 4A 4A2 4A3 3OE XOE XAX xyx L L L L H H H X Z. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance Product Pin Description Pin Name xoe xax xyx V CC Description 3-State Output Enable Inputs (Active LOW) Inputs 3-State Outputs Ground Power 2

3 Capacitance (T A = 25 C, f = MHz) Parameters () Description Test Conditions Typ Max. Units C IN Input Capacitance V IN = 0V 3 6 pf C OUT Output Capacitance V OUT = 0V 3 8. 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, = 2.7V to 3.6V) Parameters Description Test Conditions () Min. Typ (2) Max. Units V IH V IL Input HIGH Voltage (Input pins) Guaranteed Logic HIGH Level Input HIGH Voltage (I/O pins) Input LOW Voltage (Input and I/O pins) Guaranteed Logic LOW Level Input HIGH Current (Input pins) = Max. VIN = 5.5V ± I IH Input HIGH Current (I/O pins) = Max. VIN = ± I IL Input LOW Current (Input pins) = Max. VIN = ± Input LOW Current (I/O pins) = Max. VIN = ± I OZH High Impedance Output Current = Max. VOUT = 5.5V ± I OZL (3-State Output pins) = Max. VOUT = ± V IK Clamp Diode Voltage = Min., IIN = 8 ma V I OHD I ODL V OH V OL Output HIGH Current Output LOW Current Output HIGH Voltage Output LOW Voltage = 3.3V, VIN = VIH or VIL, VO =.5V (3) = 3.3V, VIN = VIH or VIL, VO =.5V (3) = Min. VIN = VIH or VIL IOH = 0. ma Vcc-0.2 IOH = 3 ma = 3.0V, IOH = 8 ma 2.4 (5) 3.0 VIN = VIH or VIL IOH = 24 ma 2.0 = Min. VIN = VIH or VIL IOL = 0. ma 0.2 IOL = 6 ma IOL = 24 ma I OS Short Circuit Current (4) = Max. (3), VOUT = ma I OFF Power Down Disable = 0V, VIN or VOUT 4.5V ±00 μa. 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. V OH = V CC 0.6V at rated current. V μa ma V 3

4 Power Supply Characteristics Parameters Description Test Conditions () Min. Typ (2) Max. Units ICC Quiescent Power Supply Current = Max. VIN = or 0. 0 ΔICC Quiescent Power Supply Current TTL Inputs HIGH ICCD Dynamic Power Supply (4) IC Total Power Supply Current (6) = Max. VIN = 0.6V (3) 500 = Max., Outputs Open XOE = One Bit Toggling 50% Duty Cycle = Max., Outputs Open fi = 0 MHZ 50% Duty Cycle XOE = One Bit Toggling = Max., Outputs Open fi = 2.5 MHZ 50% Duty Cycle XOE = 6 Bits Toggling VIN = VIN = VIN = 0.6V VIN = VIN = 0.6V VIN =. ForMax. 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. 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 (5) μa μa/ MHz ma 4

5 Switching Characteristics over Operating Range () Parameters Description Conditions t PLH t PHL t PZH t PZL Propagation Delay XAX to XYX Output Enable Time xoe to xyx t PHZ Output Disable Time (3) t PLZ xoe to xyx C L = 50 pf R L = 500Ω LPT6244 LPT6244A LPT6244C Com. Com. Com. Min (2) Max. Min (2) Max. Min (2) Max t SK (o) Output Skew (4) Units ns. 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 guar an teed by design. Packaging Mechanical: 48-pin TSSOP (A) 48 DOCUMENT CONTROL NO. PD See Note 4 REVISION: G DATE: 03/09/ See Note Max SEATING PLANE X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS.097 BSC BSC 8. Note:. Controlling dimensions in millimeters. 2. Ref: JEDEC MO-53F/ED 3. Dimension does not include mold flash, protrusions or gate burrs. Mold flash, protrusions and gate burrs shall not exceed 0.5mm per side. 4. Dimension does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25mm per side. Pericom Semiconductor Corporation 3545 N. st Street, San Jose, CA DESCRIPTION: 48-Pin 240-Mil Wide TSSOP PACKAGE CODE: A 5

6 Packaging Mechanical: 48-pin SSOP (V) 48 DOCUMENT CONTROL NO. PD - 40 REVISION: E DATE: 03/09/ Gauge Plane Nom x Max BSC X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS ) Controlling dimensions in inches. 2) Ref: JEDEC MO-8B/AA Pericom Semiconductor Corporation 3545 N. st Street, San Jose, CA DESCRIPTION: 48-Pin, 300-Mil Wide, SSOP PACKAGE CODE: V Ordering Information Ordering Code Package Code Description PI74LPT6244V V 48-pin 300 mil wide plastic SSOP PI74LPT6244CV V 48-pin 300 mil wide plastic SSOP PI74LPT6244AE A Pb-free & Green, 48-pin 240 mil wide plastic TSSOP PI74LPT6244AAE A Pb-free & Green, 48-pin 240 mil wide plastic TSSOP PI74LPT6244CAE A Pb-free & Green, 48-pin 240 mil wide plastic TSSOP Thermal characteristics can be found on the company web site at E = Pb-free & Green Adding an X suffix = Tape/Reel Pericom Semiconductor Corporation