PI74LPT16646 3.3V 16-BIT REGISTERED TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74LPT16646 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 3.3V 16-Bit Registered Transceivers 1 2 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 (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: – 56-pin 240 mil wide plastic TSSOP (A) – 56-pin 300 mil wide plastic SSOP (V) 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 PI74LPT16646 is a 16-bit registered transceiver organized as two independent 8-bit bus transceivers designed with 3-state D-type flip-flops and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers. Each 8-bit transceiver utilizes the enable control (xOE) and direction pins (xDIR) to control the transceiver functions. The Select (xSAB and xSBA) control pins are used to select either real-time or stored data transfer. The circuitry used for select control will eliminate the typical decoding glitch that occurs in a multiplexer during the transition between real-time and stored data. A low input level selects real-time data and a high selects stored data. The PI74LPT16646 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. 3 4 5 6 7 8 Logic Block Diagram 1OE 2OE 1DIR 2DIR 1CLKBA 2CLKBA 1SBA 2SBA 1CLKAB 2CLKAB 1SAB 2SAB 9 10 11 B REG B REG D D C C 1A0 12 2A0 A REG A REG 1B0 D 2B0 13 D C C TO 7 OTHER CHANNELS 14 15 TO 7 OTHER CHANNELS 1 PS2073A 01/16/97 PI74LPT16646 3.3V 16-BIT REGISTERED TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Product Pin Description Pin Name xOE, xDIR xCLKAB, xCLKBA xSAB, xSBA xAx xBx GND VCC Product Pin Configuration Description Output Enable Inputs (Active LOW) Clock Pulse Inputs Output Data Source Select Inputs Data Register A Inputs Data Register B Outputs Data Register B Inputs Data Register A Outputs Ground Power 1DIR 1CLKAB 1SAB GND 1A1 1A2 Vcc 1A3 1A4 1A5 1 2 3 56 55 54 1OE 4 5 6 7 8 9 53 52 51 50 49 GND 1A8 10 11 12 13 14 2A1 2A2 GND 1A6 1A7 2A3 GND 2A4 2A5 2A6 VCC 2A7 2A8 GND 2SAB 2CLKAB 2DIR 48 47 46 56-PIN 45 V56 44 1CLKBA 1SBA 1 B1 1 B2 VCC 1 B3 1 B4 1 B5 GND 1 B6 1 B7 1 B8 15 43 42 16 17 18 19 41 40 39 38 2 B2 20 21 37 2 B5 36 35 34 33 2 B6 22 23 24 25 26 32 31 GND 27 28 30 29 2CLKBA A56 2 B1 2 B3 GND 2 B4 VCC 2 B7 2 B8 2SBA 2OE Truth Table(2) Function Isolation Store A and B Data Real Time B Data to A Bus Stored B Data to A Bus Real Time A Data to B Bus Stored A Data to B Bus xOE H H L L L L xDIR X X L L H H Inputs xCLKAB xCLKBA H or L H or L ↑ ↑ X X X H or L X X H or L X xSAB X X X X L H xSBA X X L H X X Data I/O(1) xAx xBx Input Input Output Input Input Output Note: 1. The data output functions may be enabled or disabled by various signals at the xOE or xDIR inputs. Data input functions are always enabled, i.e., data at the bus pins will be stored on every LOW-to-HIGH transition on the clock inputs. 2. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, ↑= LOW-to-HIGH Transition 2 PS2073A 01/16/97 PI74LPT16646 3.3V 16-BIT REGISTERED TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 REAL-TIME TRANSFER BUS A TO B REAL-TIME TRANSFER BUS B TO A BUS BUS BUS BUS A B A B 1 2 3 xDIR L xOE xCLKAB xCLKBA L X X xSAB X xSBA L xDIR H xOE xCLKAB xCLKBA L X X xSAB L xSBA X 4 5 STORAGE FROM A AND/OR B TRANSFER STORES DATA TO A AND/OR B BUS BUS BUS BUS A B A B 6 7 8 9 xDIR H L X xOE xCLKAB xCLKBA L ↑ X L X ↑ H ↑ ↑ xSAB X X X xDIR(1) xOE xCLKAB xCLKBA L L X H or L H L H or L X xSBA X X X xSAB X H xSBA H X 10 11 Note: 1. Cannot transfer data to A bus and B bus simultaneously. 12 13 14 15 3 PS2073A 01/16/97 PI74LPT16646 3.3V 16-BIT REGISTERED TRANSCEIVERS 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 (3) VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V 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. 4 PS2073A 01/16/97 PI74LPT16646 3.3V 16-BIT REGISTERED TRANSCEIVERS 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., Outputs Open XOE = GND One Bit Toggling 50% Duty Cycle VIN = VCC VIN = GND 50 75 µA/ MHz VCC = Max., Outputs Open fI = 10 MHZ 50% Duty Cycle XOE = GND One Bit Toggling VIN = VCC – 0.6V VIN = GND 0.6 VCC = Max., Outputs Open fI = 2.5 MHZ 50% Duty Cycle XOE = GND 16 Bits Toggling VIN = VCC – 0.6V VIN = GND IC Total Power Supply Current(6) 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 5 PS2073A 01/16/97 PI74LPT16646 3.3V 16-BIT REGISTERED TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Switching Characteristics over Operating Range(1) Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tPLH tPHL tPLH tPHL tSU tH tW tSK(o) (2) LPT16646 LPT16646A Com. Com. Description Conditions Min Propagation Delay Bus to Bus Output Enable Time XDIR or XOE to Bus Output Disable Time(4) XDIR or XOE to Bus Propagation Delay Clock to Bus Propagation Delay xSBA or xSAB to Bus Setup Time HIGH or LOW, BUS to Clock Hold Time HIGH or LOW, Bus to Clock Clock Pulse Width(4) HIGH or LOW Output Skew(5) CL = 50 pF RL = 500 Ω (3) Max Min 2.0 9.0 2.0 (3) LPT16646C Com. Max Min 2.0 6.3 14.0 2.0 2.0 9.0 2.0 (3) Max Unit 1.5 5.4 ns 9.8 1.5 7.8 ns 2.0 6.3 1.5 6.3 ns 9.0 2.0 6.3 1.5 5.7 ns 2.0 11.0 2.0 7.7 1.5 6.2 ns 4.0 — 2.0 — 2.0 — ns 2.0 — 1.5 — 1.5 — ns 6.0 — 5.0 — 5.0 — ns — 0.5 — 0.5 — 0.5 ns 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. 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. Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 6 PS2073A 01/16/97