PI74LPT16245 3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74LPT16245 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 3.3V 16-Bit Bidirectional Transceiver 2 Product Features Product Description • • Pericom Semiconductor’s PI74LPT series of logic circuits are produced in the Company’s advanced 0.6 micron CMOS technology, achieving industry leading speed grades. 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 Packages available: – 48-pin 240 mil wide thin plastic TSSOP (A) – 48-pin 300 mil wide plastic SSOP (V) 1 3 4 5 6 7 Logic Block Diagram 1DIR 8 2DIR 1OE 2OE 1A0 9 2A0 1B0 2B0 1A1 2A1 1B1 10 2B1 1A2 2A2 1B2 1A3 2B2 11 2B3 12 2A3 1B3 1A4 2A4 1B4 13 2B4 1A5 2A5 1B5 1A6 2B5 14 2B6 15 2A6 1B6 1A7 2A7 1B7 2B7 1 PS2068A 01/16/97 PI74LPT16245 3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Product Pin Description Pin Name xOE xDIR xAx xBx GND VCC Truth Table Inputs(1) 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 XOE L L H xDIR L H X Outputs(1) Bus B Data to Bus A Bus A Data to Bus B Z Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance Product Pin Configuration 1DIR 1B 0 1B 1 GND 1B 2 1B 3 VCC 1B 4 1B 5 GND 1B 6 1B 7 1 2 48 47 1OE 3 4 5 6 46 45 44 43 7 8 9 10 11 42 41 40 39 38 1A 1 GND 1A 2 1A 3 VCC 1A 4 1A 5 GND 1A 6 48-PIN 37 V48 A48 36 1A 0 GND 2B 2 2B 3 VCC 2B 4 12 13 14 15 16 17 18 19 2B 5 GND 2B 6 2B 7 20 21 22 23 29 28 27 26 2A 5 GND 2A 6 2A 7 2DIR 24 25 2OE 2B 0 2B 1 1A 7 2A 0 35 34 33 32 31 30 2A 1 GND 2A 2 2A 3 VCC 2A 4 Capacitance (TA = 25°C, f = 1 MHz) Parameters(1) CIN COUT Description Test Conditions Typ Max. Units Input Capacitance Output Capacitance VIN = 0 V VOUT = 0 V 4.5 5.5 6 8 pF pF Note: 1. This parameter is determined by device characterization but is not production tested. 2 PS2068A 01/16/97 PI74LPT16245 3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 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 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 VIH 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 VIL IIH IIL Test Conditions(1) Description Guaranteed Logic HIGH Level Guaranteed Logic LOW Level Min. Typ(2) Max. Units 2.2 2.0 –0.5 — — — 5.5 5.5 0.8 V V V — — — — — — –0.7 –60 90 — 3.0 3.0 — — 0.2 0.3 –85 — 150 ±1 ±1 ±1 ±1 ±1 ±1 –1.2 –110 200 — — — — 0.2 0.4 0.5 –240 ±100 — µA µA µA µA µA µA V mA mA V V V 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) –36 VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3) 50 VCC = Min. IOH = –0.1 mA Vcc-0.2 VIN = VIH or VIL IOH = –3 mA 2.4 VCC = 3.0V, IOH = –8 mA 2.4(5) VIN = VIH or VIL IOH = –24 mA 2.0 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 — — V V V 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. 3 PS2068A 01/16/97 PI74LPT16245 3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Parameters Description Test Conditions(1) Min. Typ(2) Max. Units ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC 0.1 10 µA ∆ICC Quiescent Power Supply Current TTL Inputs HIGH VCC = Max. VIN = VCC – 0.6V(3) 2.0 30 µA ICCD Dynamic Power Supply(4) VCC = Max., VIN = VCC Outputs Open VIN = GND XOE = xDIR = GND One Bit Toggling 50% Duty Cycle 50 75 µA/ MHz IC Total Power Supply Current(6) VCC = Max., VIN = VCC – 0.6V Outputs Open VIN = GND fI = 10 MHZ 50% Duty Cycle XOE = xDIR = GND One Bit Toggling 0.5 0.8 mA VCC = Max., VIN = VCC – 0.6V Outputs Open VIN = GND fI = 2.5 MHZ 50% Duty Cycle XOE = xDIR = GND 16 Bits Toggling 2.0 3.3(5) Notes: 1. For Max. or Min. condition, 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. 4 PS2068A 01/16/97 PI74LPT16245 3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 1 Switching Characteristics over Operating Range(1) Description Conditions(2) tPLH tPHL Propagation Delay A to B, B to A CL = 50 pF RL = 500Ω tPZH tPZL LPT16245 LPT16245A LPT16245C Com. Com. Com. 2 Min.(3) Max. Min.(3) Max. Min.(3) Max. Units 1.5 5.2 1.5 4.6 1.5 4.1 ns Output Enable Time xOE to A or B 1.5 7.2 1.5 6.2 1.5 5.8 ns tPHZ tPLZ Output Disable Time(4) xOE to A or B 1.5 7.2 1.5 5.0 1.5 4.8 ns tPZH tPZL Output Enable Time xDIR to A or B 1.5 7.2 1.5 6.2 1.5 5.8 ns tPHZ tPLZ Output Disable Time xDIR to A or B(4) 1.5 7.2 1.5 5.0 1.5 4.8 ns tSK(o) Output Skew(5) 0.5 ns Parameters 3 0.5 0.5 4 5 6 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. 7 8 9 10 11 12 13 14 15 Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 5 PS2068A 01/16/97