PI74FCT16260T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT162260T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 12-Bit Tri-Port Bus Exchanger Product Features Product Description Common Features PI74FCT16260 and PI74FCT162260 are high-speed, low power devices with high current drive. VCC = 5V ± 10% Typical tsk (o) (Output Skew) < 250ps, clocked mode Extended range of 40°C to +85°C Hysteresis on all inputs PI74FCT16260T Features High output drive: IOH = 32mA; IOL = 64mA Power off disable outputs permit live insertion Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V, TA = 25°C PI74FCT162260T Features Balanced output drive: IOL/IOH = 24mA Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V, TA = 25°C Series current limiting resistors Packages available: 56-pin 240 mil wide TSSOP (A56) 56-pin 300 mil wide SSOP (V56) Pericom Semiconductors PI74FCT series of logic circuits are produced in the Companys advanced 0.6 micron CMOS technology, achieving industry leading speed grades. The FCT16260AT/CT and the FCT162260AT/CT TriPort Bus Exchangers are high-speed 12-bit latched bus multiplexers/ transceivers for use in high speed microprocessor applications. These Bus Exchangers support memory interleaving with latched outputs on the B-ports and address multiplexing with latched inputs on the Bports. The Tri-port Bus Exchanger has three 12-bit ports. Data may be transferred between the A-port and either/both of the B-ports. The latch enable (LE1B, LE2B, LEA1B and LEA2B) inputs control data storage. When a latch-enable input is HIGH, the latch is transparent. When the latch enable input is LOW, the data at the input is latched and remains latched until the latch enable input is returned HIGH. Independent output enables (OE1B and OE2B allow reading from one port while writing to the other port. The FCT16260AT/CT are ideally suited for driving high capacitance loads and low impedance backplanes. The output buffers are designed with power off disable capability to allow live insertion of boards when used as backplane drivers. Logic Block Diagram The FCT162260AT/CT have balanced output drive with current limiting resistors. This offers low ground bounce, minimal undershoot, and controlled output fall times reducing the need for external series terminating resistors. 1 PS8307A 11/17/98 PI74FCT16260T PI74FCT162260T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 12-Bit Tri-Port Bus Exchanger Product Pin Description Product Pin Configuration Pin Name O E2B D e s cription 2B O utput Enable (Active LO W) O E1B 1B O utput Enable (Active LO W) LE1B Latch Enable, A- 1B LE2B Latch Enable, A21B LEA1B Latch Enable Input for 1B- A Latch OEA LE1B 1 2B3 54 LEA2B 2B4 GND 3 4 53 GND 2B2 5 52 2B5 2B1 6 2B6 VCC A1 7 51 50 8 49 48 2B7 2B8 56 55 2 OE2B VCC LEA2B Latch Enable Input for 2B- A Latch A2 O EA O utput Enable for A (Active LO W) A3 9 10 GND 11 A4 12 13 45 2B10 44 2B11 14 15 43 42 41 2B12 1B12 40 39 1B10 38 37 1B9 SEL 1B or 2B Path Selection A1 A- to- B Data Inputs for B- to- A 3 State O utputs A5 A6 1B1 Bidirectional Data Port 1B A7 Bidirectional Data Port 2B A8 16 2B1 A9 17 GND 18 A10 A11 19 GND Ground VCC Power A12 VCC 1B1 Truth Table(1) A to B (OEA = H) INPUTS OUTPUTS 25 26 32 31 GND 27 28 30 29 1B 2B LE2B H H H L L H H SEL L H H L L L L H H L L L H 2B0(2) (2) L H L H L L 1B0(2) H L L H L L 1B0(2) L X L L L L 1B0(2) 2B0(2) X X X H H Z Z X X X L H Active X X X H L X X X L L 1B8 1B7 GND 1B3 OE2B L GND 1B2 OE1B L 1B11 VCC LEA2B L 36 GND 35 34 33 LEA1B H 20 21 2B9 22 23 24 A L 56-Pin 47 A, V 46 1B6 1B5 1B4 LEA1B OE1B Truth Table(1) B to A (OEB = H) 2B0 Inputs 1B 2B SEL LE1B LE2B OEA Output A H X H H X L H L X H H X L L Z X X H L X L A(2) Z Active X H L X H L H Active Active X L L X H L L X X L X L L A(2) X X X X X H Z Notes: 1. H = High Signal Level L = Low Signal Level X = Irrelevant Z = High Impedance 2. Output level before the indicated steady-state input conditions were established. 2 PS8307A 11/17/98 PI74FCT16260T PI74FCT162260T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 12-Bit Tri-Port Bus Exchanger 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 Input Voltage Range, VIN ......................................... 0.5V to VCC +0.5V Output Voltage Range, VOUT ................................... 0.5V to VCC +0.5V DC Input Voltage ............................................................... 0.5V to +5.0V DC Output Current .......................................................................... 100 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 =5.0V ± 10%) Te s t Conditions (1) Parame te rs De s cription VIH Input High Voltage Guaranteed Logic HIGH Level VIL Input LOW Voltage Guaranteed Logic LOW Level IIH Input HIGH Current (Input pins) IIL Input LOW Current (Input pins) IOZH (I/O pins) (I/O pins) VCC = Max. VIN = VCC VCC = Max. VIN = Max. M in. M ax. Units 2.0 V 0.8 -1 -1 -1 -1 VOUT = 2.7V -1 VOUT = 0.5V -1 IOZL High Impedeance Output Current VIK Clamp Diode Voltage VCC = Min., IIN = - 18mA IOS Short Circuit Current (I/O pins) VCC = Max.(3), VOUT = GND VH Input Hysteresis VCC = Max. Typ.(2) - 80 mA - 0.7 - 1.2 V - 140 - 250 mA 100 mV PI74FCT16260T Output Drive Characteristics (Over the Operating Range) Parame te rs IO VOH Te s t Conditions (1) De s cription Output Drive Current (I/O pins) VCC = Max.(3), VOUT = 2.5V Output High Voltage VCC = Min., VIN = VIH = VIH or VIL VOL Output LOW Voltage VCC = Min., VIN = VIH = VIH or VIL IOFF Input /Output Power OFF Leakage VCCC = 0V, VIN or VOUT ≤ 4.5V M in. Typ.(2) M ax. - 50 - 180 IOH = - 3.0mA 2.5 3.5 IOH = - 15.0mA 2.4 3.5 IOH = - 32.0mA 2.0 3.0 IOL = 64mA 0.2 Units mA V 0.55 ±1 mA PI74FCT162260T Output Drive Characteristics (Over the Operating Range) Parame te rs De s cription Te s t Conditions (1) VOH Output High Voltage VCC = Min., VIN = VIH or VIL IOH = - 24.0mA VOL Output LOW Voltage VCC = Min., VIN = VIH or VIL IOL = 24.0mA IODL Output LOW Current VCC = 5V, VIN = VIH or VIL, VOUT = 1.5V(3) Output HIGH Current VCC = 5V, VIN = VIH or VIL, VOUT = 1.5V(3) IODH M in. Typ.(2) 2.4 3.3 M ax. 0.3 0.55 60 115 200 - 60 - 115 - 200 Units V mA 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 = 5.0V, +25ºC 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. 3 PS8307A 11/17/98 PI74FCT16260T PI74FCT162260T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 12-Bit Tri-Port Bus Exchanger Power Supply Characteristics Parameters Description Test Conditions(1) Min. Typ.(2) Max. Units 5 500 µA ICCL, ICCH, Quiescent Power ICCZ Supply Current VCC = Max. VIN = GND or VCC DICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) 0.5 1.5 mA ICCD Supply Current per Input per MHz(4) VCC = Max. Outputs Open One Output Port Enabled LExx = VCC One Input Bit Toggling One Output Bit Toggling 50% Duty Cycle VIN = VCC VIN = GND 60 100 µA/ MHz IC Total Power Supply Current(6) VCC = Max., Outputs Open fI = 10MHz 50% Duty Cycle One Output Port Enabled LExx = VCC One Input Bit Toggling One Output Bit Toggling VIN = VCC VIN = GND 0.6 1.5 mA VIN = 3.4V VIN = GND 0.9 2.3 VCC = Max., Outputs Open fI = 2.5MHz 50% Duty Cycle One Output Port Enabled LExx = VCC Twelve Input Bit Toggling Twelve Output Bit Toggling VIN = VCC VIN = GND 1.8 3.5(5) VIN = 3.4V VIN = GND 4.8 12.5(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 = 5.0V, +25°C ambient. 3. Per TTL driven input (VIN = 3.4V); 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 ∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) 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) fI = Input Frequency NI = Number of Inputs at fI All currents are in milliamps and all frequencies are in megahertz. 4 PS8307A 11/17/98 PI74FCT16260T PI74FCT162260T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 12-Bit Tri-Port Bus Exchanger Switching Characteristics over Operating Range (Propogation Delays) 16260AT/162260AT Parame te rs Conditions (1) De s cription 16260CT/162260CT Com. (2 ) 16260ET/162260ET Com. (2 ) (2 ) Units Com. (2 ) (2) (2) M in. M ax. M in. M ax. M in. M ax. tPLH tPHL Propagation Delay Ax to 1Bx or Ax to 2Bx 1.5 5.2 1.5 4.7 1.5 3.6 tPLH tPHL Propagation Delay 1Bx to Ax or 2Bx to Ax 1.5 5.6 1.5 5.0 1.5 3.6 tPLH tPHL Propagation Delay LExB to Ax 1.5 5.2 1.5 4.7 1.5 4.0 tPLH tPHL Propagation Delay LEA1B to Bx or LEA2B to 2Bx 1.5 4.7 1.5 4.4 1.5 4.0 tPLH tPHL Propagation Delay SEL to Ax 1.5 5.2 1.5 4.7 1.5 4.0 tPZH tPZL Output Enable Time OEA to Ax, OE1B to 1Bx, or OE2B to 2Bx tPHZ tPLZ CL = 50 pF RL = 500W ns 1.5 5.7 1.5 5.1 1.5 4.4 Output Disable Time OEA to Ax, OE1B to 1Bx, or OE2B to 2Bx 1.5 4.4 1.5 4.0 1.5 4.0 tS U Setup Time, HIGH or LOW Data to Latch 1.5 1.0 1.0 tH Hold Time, Latch to Data 1.0 1.0 1.0 3.0 3.0 3.0 tW tS K (0) (4 ) Pulse Width, Latch HIGH Output Skew(3) 0.5 0.5 0.5 Notes: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design. 4. This parameter is guaranteed but not production tested. Capacitance (TA = 25ºC, f = MHz) Parame te rs D e s cription Te s t Conditions Typ. M ax. CIN Input Capacitance VIN = 0V 3.5 6.0 CI/O I/O Capacitanc VOUT = 0V 3.5 8.0 Units 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 5 PS8307A 11/17/98