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| PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable Features * * * * * * * * -3dB BW of 1.8 GHz 4 Differential Channel, 2:1 Mux/DeMux Low Bit-to-Bit Skew Low Crosstalk: -68dB @ 10 MHz Low Off Isolation: -77dB @ 10 MHz VCC Operating Range: +1.5V to +2.0V ESD Tolerance: 8kV HBM I/O, 2kV HBM select pin Packaging (Pb-free & Green): - 42-contact, TQFN (ZH42) Description Pericom Semiconductor's PI2DBS412 is an 8-to-4 differential channel multiplexer/demultiplexer switch. Using a specialized design scheme, Pericom has been able to achieve a performance of 3Gbps data rate mux/de-mux function. Due to its bi-directional nature, the PI2DBS412 can be used to allocate bandwidth to two different locations as a demux, or connect two high-speed sources to a single reciever as a mux. The PI2DBS412 will target the following standards: SAS, SATA I, SATA II, INFINIBAND, HYPERTRANSPORT, and RAP ID I/O. We recommend customers to use Pericom's Re-Driver devices in conjunction with the PI2DBS412 in applications requiring long trace lengths to ensure signal integrity. Applications * * * * * Routers Switch Server Notebook Medical Equipment Pin Description VCC GND VCC GND 42 41 40 39 Block Diagram A0 A1 A2 A3 0B1 1B1 2B1 3B1 0B2 1B2 2B2 3B2 4B1 5B1 6B1 7B1 4B2 5B2 6B2 7B2 A4 A5 A6 A7 GND A0 A1 GND VCC A2 A3 VCC SEL GND A4 A5 VCC GND A6 A7 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 GND 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 0 B1 1 B1 2 B1 3 B1 0 B2 1 B2 2 B2 3 B2 VCC 4 B1 5 B1 6 B1 7 B1 4 B2 5 B2 6 B2 7 B2 18 19 20 21 VCC GND VCC GND SEL Truth Table Function AN to NB1 AN to NB2 07-0123 SEL L H PS8786C 05/05/07 1 PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch Maximum Ratings (Above which useful life may be impaired. For user guidelines, not tested.) Storage Temperature....................................-65C to +150C Supply Voltage to Ground Potential...............-0.5V to +2.5V 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 for Switching over Operating Range (TA = -40C to +85C, VCC = 1.5V to 2.0V) Paramenter VIH VIL VIK IIH IIL Description Input HIGH Voltage Input LOW Voltage Clamp Diode Voltage Input HIGH Current Input LOW Current Test Conditions(1) Guaranteed HIGH level Guaranteed LOW level VCC = Max., IIN = -18mA VCC = Max., VIN = VCC VCC = Max., VIN = GND Min. 0.65 x VCC -0.5 -0.7 0.35 x VCC -1.2 5 5 A V Typ.(2) Max. Units 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 = 1.8V, TA = 25C ambient and maximum loading. Power Supply Characteristics Parameters ICC Description Quiescent Power Supply Current Test Conditions(1) VCC = Max., VIN = GND or VCC Min. Typ.(2) 200 Max. Units A 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 = 1.8V, TA = 25C ambient and maximum loading. Dynamic Electrical Characteristics Over the Operating Range (TA= -40 to +85C, VCC = 1.8V10%, GND=0V) Parameter XTALK OIRR (3) (3) Description Crosstalk OFF Isolation Bandwidth Test Conditions(1) See Fig. 1 for Measurement Setup, f = 10 MHz See Fig. 2 for Measurement Setup, f = 10 MHz Min. Typ.(2) -68 -77 1.8 Max. Units dB GHz BW(3) 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 = 1.8V, TA = 25C ambient and maximum loading. 3. Guaranteed by design. 07-0123 2 PS8786C 0505/07 PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch HP4396B S HP11667A 50-ohm 50-ohm 50-ohm R PI2DBS412 100 -ohm T 100 -ohm Fig 1. Crosstalk Setup HP4396B S HP11667A 50-ohm 50-ohm 50-ohm 100 -ohm R T PI2DBS412 Fig 2. Off-isolation setup 07-0123 3 PS8786C 0505/07 PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch Fig 3. S21 (Insertion Loss) and S11 (Reflection) SET-UP 07-0123 4 PS8786C 0505/07 PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch Fig 4. Crosstalk Fig 5. Off Isolation 07-0123 5 PS8786C 0505/07 PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch Fig 6. Bandwidth 07-0123 6 PS8786C 0505/07 PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch Switching Characteristics (TA= -40 to +85C, VCC = 1.8V10%) Paramenter tPZH, tPZL tPHZ, tPLZ Description(1) Line Enable Time - SEL to AN, BN Line Disable Time - SEL to AN, BN Min. 0.5 0.5 Max. 8.0 4.0 Units ns Notes: 1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. Test Circuit for Electrical Characteristics 2 x VDD VCC 200-ohm Pulse Generator VIN D.U.T RT VOUT 4pF CL 200-ohm Notes: * CL = Load capacitance: includes jig and probe capacitance. * RT = Termination resistance: should be equal to ZOUT of the Pulse Generator * Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. * Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. * All input impulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50, tR 2.5ns, tF 2.5ns. * The outputs are measured one at a time with one transition per measurement. Switch Positions Test tPLZ, tPZL (output on B-side) tPHZ, tPZH (output on B-side) Prop Delay Switch 2 x VCC GND Open 07-0123 7 PS8786C 0505/07 PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch Test Circuit for Dynamic Electrical Characteristics HP4396B or Equivalent S1 R1 T1 PI2DBS412 HP11667A Switching Waveforms SEL VDD/2 tPZL VDD/2 0V Output tPLZ VOH VDD VDD/2 tPZH tPHZ VOL + 0.15V VOH - 0.15V VOL VOH VOL VDD/2 Output Voltage Waveforms Enable and Disable Times 07-0123 8 PS8786C 0505/07 PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch Packaging Mechanical: 42-Contact TQFN (ZH) Ordering Information Ordering Code PI2DBS412ZHE Package Code ZH Package Description Pb-free & Green, 42-contact TQFN Notes: * Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ * E = Pb-free & Green * Adding an X suffix = Tape/Reel Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com 07-0123 9 PS8786C 0505/07 |
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