PI5C16245AE

PI5C16245 16-Bit, 2-Port Bus Switch Features Description ÎÎNear-Zero propagation delay Pericom Semiconductor’s PI5C16245 is a 16-bit, 2-port bus switch ÎÎ5-ohm switches connect inputs to outputs that is pin compatible with the 74 series 16245 16-bit transceiver. Two enable signals (nBE) turn the switches on similar to the enable signals of the 16245. The bus switch creates no additional propagation delay or additional ground bounce noise. ÎÎDirect bus connection when switches are ON ÎÎUltra-low quiescent power (0.2 μA typical) – Ideally suited for notebook applications ÎÎPin compatible with 74 series16245 ÎÎIndustrial operating temperature: -40°C to +85°C ÎÎPackaging (Pb-free & Green): àà 48-pin 240-mil wide thin plastic TSSOP (A) Block Diagram Pin Configuration 1A 0 NC 1B 0 1A 7 1B 7 1 2 48 47 1BE 1B0 1B1 GND 3 4 46 45 1A1 GND 1B2 5 44 1A2 1B3 6 7 43 42 1A3 VCC 8 9 1A4 1A5 GND VCC 1B4 GND 10 41 40 39 1B6 11 38 1A6 1B7 12 37 1A7 2B0 36 35 34 33 2A0 GND 2B2 13 14 15 16 2A1 GND 2A2 2B3 VCC 2B4 2B5 GND 2B6 17 18 19 20 21 22 32 31 30 29 28 27 2A3 VCC 2A4 2A5 GND 2A6 2B7 23 24 26 25 2A7 1B5 1BE 2A 0 2B 0 2B1 2A 7 2B 7 2BE Truth Table NC (1) Function nBE nA0–7 Disconnect H Hi-Z Connect L nB0–7 Note: H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance All trademarks are property of their respective owners. 1A0 2BE Pin Description 11-0002 1 Pin Name I/O Description nBE I nA0-nA7 I/O Bus A nB0-nB7 I/O Bus B Bus Enable Input (Active LOW) www.pericom.com PS7025F 09/21/10 PI5C16245 16-Bit, 2-Port Bus Switch Absolute Maximum Ratings Parameter Min. Max. Units Storage Temperature -55 125 o C Ambient Temperature with Power Applied -40 85 o C Supply Voltage to Ground Potential -0.5 7.0 V DC Input Voltage -0.5 7.0 V DC Output Current - 120 mA Power Dissipation - 0.5 W Stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ±10%) Parameters Description Test Conditions(1) Min VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 VIL Input LOW Voltage Guaranteed Logic LOW Level -0.5 IIH Input HIGH Current IIL Input LOW Current IOZH High Impedance Output Current 0 ≤ A, B ≤ VCC VIK Clamp Diode Voltage VCC = Min., IIN = –18 mA IOS Short Circuit Current(3) A (B) = 0V, B (A) = VCC VH Input Hysteresis at Control Pins RON Switch On Resistance(4) Typ (2) Max Units V 0.8 V VCC = Max., VIN = VCC ±1 μA VCC = Max., VIN = GND ±1 μA ±1 μA -1.2 V -0.7 100 mA 150 mV VCC = Min., VIN = 0.0V, ION = 48 mA 5 7 VCC = Min., VIN = 2.4V, ION = 15 mA 10 5 ohm Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description Test Conditions Typ Max Units CIN Input Capacitance VIN = 0V 6 pF COFF A/B Capacitance, Switch Off VIN = 0V 6 pF CON A/B Capacitance, Switch On VIN = 0V 9 pF 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, TA = 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. Measured by the voltage drop between A and B pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A,B) pins. 5. This parameter is determined by device characterization but is not production tested. All trademarks are property of their respective owners. 11-0002 2 www.pericom.com PS7025F 09/21/10 PI5C16245 16-Bit, 2-Port Bus Switch Power Supply Characteristics Parameters Description Test Conditions(1) Min ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC ΔICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) ICCD Supply Current per Input per MHz(4) VCC = Max., A and B Pins Open nBE = GND Control Input Toggling 50% Duty Cycle Typ (2) Max Units 0.1 3.0 μA 2.5 mA 0.25 mA/ MHz 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, control inputs only); A and B pins do not contribute to Icc. 4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design. PI5C16245 Switching Characteristics over Operating Range PI5C16245 Com. Parameters Description tPLH tPHL Propagation Delay xAx to xBx, xBx to xAx tPZH tPZL Bus Enable Time xBE to xAx or xBx tPHZ tPLZ Bus Disable Time xBE to xAx or xBx Min Test Conditions(1) Max Units 0.25 ns 1.5 6.5 ns 1.5 5.5 ns (2,3) CL = 50 pF RL = 500-ohm Notes: 1. See test circuit and wave forms. 2. This parameter is guaranteed but not tested on Propagation Delays. 3. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25 ns for 50 pF load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side. All trademarks are property of their respective owners. 11-0002 3 www.pericom.com PS7025F 09/21/10 PI5C16245 16-Bit, 2-Port Bus Switch Test Circuits Switch Position Test 7V VCC Disable LOW Closed Open Pulse Generator VOUT VIN 500Ω 50pF CL 500Ω RT = Termination resistance (should be equal to ZOUT of the pulse generator) 3V 3V tPHL 3V Output 1.5V 1.5V 0V 0V tPLH 0.3V t PZH Switch GND 1.5V 1.5V 0V t PLZ t PZH 3V Same Phase Input Transisiton 1.5V t PZL Output Normally High Open Propagation Delay 1.6V Switch tPD Disable Enable Output Normally Low Closed CL = Load capacitance (includes jig and probe capacitance) Enable and Disable Timing Control Input Enable LOW Definitions: D.U.T RT Switch 0.3V VOH 1.5V 1.5V VOL VOL tPLH VOH tPHL Opposite Phase Input Transisiton 0V 3V 1.5V 0V 1. Input Control Enable = Low Input Control Disable = High 2. Pulse Generator for all pulses Rate ≤1.0 MHz; ZOUT ≤50Ω; tF, tR≤2.5ns All trademarks are property of their respective owners. 11-0002 4 www.pericom.com PS7025F 09/21/10 PI5C16245 16-Bit, 2-Port Bus Switch Packaging Mechanical: 48-Pin TSSOP (A) DOCUMENT CONTROL NO. PD - 1501 48 REVISION: G DATE: 03/09/05 .236 .244 6.0 6.2 See Note 4 1 .488 12.4 .496 12.6 See Note 3 .047 1.20 Max SEATING PLANE 1 .004 0.09 .008 0.20 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .0197 BSC 0.50 .002 .006 0.05 0.15 .007 .010 0.17 0.27 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. 0.45 .018 0.75 .030 .319 BSC 8.1 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 Ordering Information Ordering Code Package Code Package Type Operating Temperature PI5C16245AE A Pb-free & Green, 48-pin TSSOP Commercial 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ Pericom Semiconductor Corporation • 1-800-435-2336 All trademarks are property of their respective owners. 11-0002 5 www.pericom.com PS7025F 09/21/10