PO3B3245A www.potatosemi.com 8-Bit, 2-Port Bus Switch High Bandwidth Potato Chip FEATURES: DESCRIPTION: • Patented technology • High signal -3db passing bandwidth at 1.35GHz • Near-Zero propagation delay • VCC = 1.65V to 3.6V • Ultra-Low Quiescent Power: 0.1 A typical • Ideally suited for low power applications • Industrial operating temperature: -40°C to +85°C • Available in 20pin TSSOP package Potato Semiconductor’s PO3B3245A is designed for world top performance using submicron CMOS technology to achieve GHz high bandwidth. Pin Configuration NC A0 A1 A2 A3 A4 A5 A6 A7 GND 1 2 3 4 5 6 7 8 9 10 Block Diagram 20 19 18 17 16 15 14 13 12 11 Vcc BE B0 B1 B2 B3 B4 B5 B6 B7 Pin Description PinName BE A0–7 B0–7 GND VCC The PO3B3245A is a 8-Bit, 2-Port Bus Switch. The switch introduces no additional ground bounce noise or propagation delay. SW B0 A7 SW B7 SW BE A B BE Truth Table Function Disconnect Description Bus Enable Input (Active LOW) Bus A Bus B Ground Power Potato Semiconductor Corporation A0 Connect 1 BE H A0–7 Hi-Z L B0–7 01/01/10 PO3B3245A www.potatosemi.com 8-Bit, 2-Port Bus Switch High Bandwidth Potato Chip 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 Supply Voltage to Ground Potential ........................... –0.5V to +4.6V DC Input Voltage ........................................................ –0.5V to +Vcc DC Output Current................................................................... 120mA Power Dissipation ....................................................................... 0.5W 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, 3.3V Supply (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.3V ±10%) Parameters Description Min. Test Conditions Max. Typ. VIH Input HIGH Voltage Guaranteed Logic HIGH Level VIL Input LOW Voltage Guaranteed Logic LOW Level 0.8 IIH Input HIGH Current VCC = Max., VIN = VCC ±1 IIL Input LOW Current VCC = Max., VIN = GND ±1 IOZH High Impedance Output Current 0 Y, In 2.0 VCC ION = -48 mA or -64mA Switch On-Resistance V A ±1 VCC = Min., VIN = 0.0V, RON Units VCC = Min., VIN = VCC , ION = -15 mA 12 18 12 18 DC Electrical Characteristics, 2.5V Supply (Over Operating Range, TA = –40°C to +85°C, VCC = 2.5V ± 10%) Parameters Description Test Conditions Min. Typ. Max. VIH Input HIGH Voltage Guaranteed Logic HIGH Level 1.8 VCC + 0.3 VIL Inout LOW Voltage Guaranteed Logic LOW Level –0.3 0.8 IIH Input HIGH Current VCC = Max., VIN = VCC ±1 IIL Input LOW Current VCC = Max., VIN = GND ±1 IOZH High Impedance Current 0 ±1 RON Switch On Resistance Potato Semiconductor Corporation Y, In VCC VCC = Min., VIN = 0.0V, ION = –48mA 18 22 VCC = Min., VIN = 2.25V, ION = -15mA 18 22 2 Units V A 01/01/10 PO3B3245A www.potatosemi.com 8-Bit, 2-Port Bus Switch High Bandwidth Potato Chip Power Supply Characteristics Symbol Icc Description Quiescent Power Supply Current Test Conditions (1) Min Typ Vcc=Max, Vin=Vcc or GND - 0.1 Max Unit 3 uA Notes: 1. 2. 3. 4. 5. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. Typical values are at Vcc = 3.3V, 25°C ambient. This parameter is guaranteed but not tested. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. VoH = Vcc – 0.6V at rated current Capacitance Parameters (TA = 25°C f = 1 MHz) Description Test Conditions Typ. Units CIN COFF Input Capacitance A/B Capacitance, Switch Off VIN = 0V VIN = 0V 3.0 5.0 pF pF CON A/B Capacitance, Switch On VIN =0V 10.0 pF Dynamic Electrical Characteristics Over the Operating Range (TA = -40º to +85º, VCC = 3.3V ± 10%) Parameter Description Test Condition Typ. XTALK Crosstalk RL = 100 -60 OIRR Off-Isolation RL = 100 -60 BW -3dB Bandwidth RL = 100 1.35 Units dB GHz Switching Characteristics over 3.3V Operating Range Parameters Description tPLH tPHL Propogation Delay tPZH tPZL Bus Enable Time tPHZ tPLZ Bus Disable Time Conditions See Test Diagram Max. Units 0.3 2.0 ns See Test Diagram Potato Semiconductor Corporation 3.0 3 01/01/10 PO3B3245A www.potatosemi.com 8-Bit, 2-Port Bus Switch High Bandwidth Potato Chip Switching Characteristics over 2.5V Operating Range Parameters Description tPLH tPHL Propogation Delay tPZH tPZL Bus Enable Time tPHZ tPLZ Bus Disable Time Max. Conditions See Test Diagram Units 0.3 2.0 ns See Test Diagram 3.0 Test Circuit for Electrical Characteristics Switch Positions Test Switch tPLZ, tPZL 6.0V tPHZ, tPZH GND Prop Delay Open 6.0V VCC 200-ohm Pulse Generator VOUT VIN D.U.T 10pF CL RT 200-ohm Switching Waveforms SEL 2.5V Input Output 3.5V 2.5V tPLH tPHL 2.5V 2.5V 1.5V Output VOH VOL Voltage Waveforms Propagation Delay Times Potato Semiconductor Corporation 1.25V 1.25V tPZL VDD/2 VDD/2 0V VOH VOL +0.3V tPHZ tPZH Output tPLZ 2.5V VOH –0.3V VOL VOH VOL Voltage Waveforms Enable and Disable Times 4 01/01/10 PO3B3245A www.potatosemi.com 8-Bit, 2-Port Bus Switch High Bandwidth Potato Chip Packaging Mechanical Drawing: 20 pin TSSOP 20 .169 .177 1 .252 .260 6.4 6.6 4.3 4.5 .047 1.20 Max .007 .012 0.19 0.30 .0256 BSC 0.65 .238 .269 .018 .030 0.45 0.75 SEATING PLANE 6.1 6.7 .004 0.09 .008 0.20 .002 0.05 .006 0.15 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS IC Ordering Information Ordering Code Package Top-Marking TA PO3B3245ATU for Tube 20-pin TSSOP Pb-free & Green PO3B3245AT -40°C to 85°C PO3B3245ATR for Tape & Reel 20-pin TSSOP Pb-free & Green PO3B3245AT -40°C to 85°C PIN 1 LOCATION TAPE TRAILER LENGTH IC Package Information PACKAGE CODE T PACKAGE TYPE TSSOP 20 Potato Semiconductor Corporation TAPE WIDTH (mm) TAPE PITCH (mm) 16 8 Top Left Corner 39 (12”) 5 QTY PER REEL 3000 TAPE LEADER LENGTH 64 (20”) QTY PER TUBE 74 01/01/10