PI74LPT16245 Fast CMOS 3.3V 16-Bit Bidirectional Transceiver Product Features Product Description • • The PI74LPT16245 is a 16-bit bidirectional transceiver designed for asynchronous two-way communication between data buses. The direction control input pin (xDIR) determines the direction of data flow through the bidirectional transceiver. The Direction and Output Enable controls are designed to operate this device as either two independent 8-bit transceivers or one 16-bit transceiver. The output enable (OE) input, when HIGH, disables both A and B ports by placing them in HIGH Z condition. The PI74LPT16245 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. • • • • • • • • 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 (24 mA 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/GND 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) Logic Block Diagram 1DIR 2DIR 1OE 2OE 1A0 2A0 1B0 2B0 1A1 2A1 1B1 2B1 1A2 2A2 1B2 2B2 1A3 2A3 1B3 2B3 1A4 2A4 1B4 2B4 1A5 2A5 1B5 2B5 1A6 2A6 1B6 2B6 1A7 2A7 1B7 08-0291 2B7 1 PS2068F 11/10/08 PI74LPT16245 3.3V 16-Bit Bidirectional Transceiver 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 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 op er a tion al sec tions of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Truth Table(1) Product Pin Configuration Inputs 1DIR 1 2 48 47 1OE 3 4 5 6 46 45 44 43 1B5 GND 1B6 7 8 9 10 11 42 41 40 39 38 1B7 12 1B0 1B1 GND 1B2 1B3 VCC 1B4 2B0 2B1 XDIR 1A1 L L Bus B Data to Bus A GND L H Bus A Data to Bus B H X Z 1A0 1A2 1A3 VCC 1A5 GND 1A6 1A7 2A1 33 32 31 30 2A2 VCC 2B4 16 17 18 19 2B5 GND 2B6 2B7 20 21 22 23 29 28 27 26 2A5 2DIR 24 25 2OE 2B3 Product Pin Description 2A0 35 34 2B2 Notes: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance 1A4 14 15 GND 08-0291 48-PIN 37 V48 13 A48 36 Outputs XOE Pin Name xOE xDIR xAx xYx GND VCC GND 2A3 VCC 2A4 GND 2A6 Description 3-State Output Enable Inputs (Active LOW) Direction Control Input Side A Inputs or 3-State Inputs Side B Outputs or 3-State Outputs Ground Power 2A7 2 PS2068F 11/10/08 PI74LPT16245 3.3V 16-Bit Bidirectional Transceiver 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. 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 VIH VIL IIH IIL IOZH IOZL VIK IOHD IODL VOH VOL IOS IOFF VH Description 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) 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 V = Max. VOUT = 5.5V High Impedance Output Current CC (3-State Output pins) VCC = Max. VOUT = GND Clamp Diode Voltage VCC = Min., IIN = –18 mA VCC = 3.3V, VIN = VIL or VIL, Output HIGH Current VO = 1.5V(3) VCC = 3.3V, VIN = VIH or VIL, Output LOW Current VO = 1.5V(3) IOH = –0.1 mA VCC = Min. VIN = VIH or VIL IOH = –3 mA Output HIGH Voltage VCC = 3.0V, IOH = –8 mA VIN = VIH or VIL IOH = –24 mA IOL = 0.1 mA VCC = Min. IOL = 16 mA Output LOW Voltage VIN = VIH or VIL IOL = 24 mA (4) (3) Short Circuit Current VCC = Max. , VOUT = GND –60 Power Down Disable VCC = 0V, VIN or VOUT ≤ 4.5V Input Hysteresis Min. Typ(2) Max. 2.2 2.0 5.5 5.5 –0.5 0.8 –0.7 ±1 ±1 ±1 ±1 ±1 ±1 –1.2 –36 –60 –110 50 90 200 VCC -0.2 2.4 2.4(5) 2.0 3.0 3.0 Units V μA V mA -60 V 0.2 0.3 –85 0.2 0.4 0.5 –240 ±100 150 mA 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. 08-0291 3 PS2068F 11/10/08 PI74LPT16245 3.3V 16-Bit Bidirectional Transceiver 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. 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 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. 08-0291 4 PS2068F 11/10/08 PI74LPT16245 3.3V 16-Bit Bidirectional Transceiver Switching Characteristics over Operating Range(1) LPT16245 Parameters Description Conditions(2) LPT16245A Com. Min(3) Max. Min Com. Com. (3) (3) Max. Min Units Propagation Delay XAX to XBX 1.5 5.2 1.5 4.6 1.5 4.1 tPZH tPZL Output Enable Time xOE to xBx 1.5 7.2 1.5 6.2 1.5 5.8 tPHZ tPLZ Output Disable Time(4) xOE to xBx 1.5 7.2 1.5 5.0 1.5 4.8 tPZH tPZL Output Enable Time xDIR to A or B 1.5 7.2 1.5 6.2 1.5 5.8 tPHZ tPLZ Output DisableTime xDIR to A or B(4) 1.5 7.2 1.5 5.0 1.5 4.8 Output Skew(5) tSK(o) 0.5 0.5 2 Max. tPLH tPHL CL = 50pF RL = 500Ω 1 LPT16245C 3 ns 4 5 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. See test circuit and wave forms. 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. DOCUMENT CONTROL NO. PD - 1501 48 6 7 8 REVISION: G DATE: 03/09/05 .236 .244 9 6.0 6.2 See Note 4 1 .488 12.4 .496 12.6 10 See Note 3 .047 1.20 Max 11 SEATING PLANE 1 .004 0.09 .008 0.20 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .0197 BSC 0.50 .007 .010 0.17 0.27 .002 .006 0.05 0.15 12 0.45 .018 0.75 .030 13 .319 BSC 8.1 14 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. 15 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 08-0291 5 PS2068F 11/10/08 PI74LPT16245 3.3V 16-Bit Bidirectional Transceiver 1 DOCUMENT CONTROL NO. PD - 1401 48 REVISION: E 2 DATE: 03/09/05 .291 .299 7.39 7.59 .395 .420 10.03 10.67 3 Gauge Plane .010 0.25 .02 0.51 .04 1.01 1 4 .015 0.381 x 45˚ .025 0.635 .008 0.20 Nom. 1 .620 .630 15.75 16.00 5 .110 2.79 Max .008 0.20 .016 0.40 0-8˚ .025 BSC 0.635 6 .008 0.20 .0135 0.34 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS 7 Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 • www.pericom.com Notes: 1) Controlling dimensions in inches. 2) Ref: JEDEC MO-118B/AA 8 DESCRIPTION: 48-Pin, 300-Mil Wide, SSOP PACKAGE CODE: V 9 10 11 12 Ordering Information Ordering Code PI74LPT16245AE PI74LPT16245AAE PI74LPT16245VE PI74LPT16245CAE Package Code A A V A Description Pb-free & Green, 48-pin 173 mil wide plastic TSSOP Pb-free & Green, 48-pin 173 mil wide plastic TSSOP Pb-free & Green, 48-pin 300 mil wide plastic SSOP Pb-free & Green, 48-pin 173 mil wide plastic TSSOP 13 14 15 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 08-0291 6 PS2068F 11/10/08