PI2DBS412 1.8V, 1.8GHz, Differential Broadband Signal Switch, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable Features 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. –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) 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 • • • • • GND A0 A1 GND VCC A2 A3 VCC SEL GND A4 A5 VCC GND A6 A7 GND Block Diagram A0 A1 A2 A3 0B1 1B1 2B1 3B1 0B2 1B2 2B2 3B2 A4 A5 A6 4B1 A7 7B1 5B1 6B1 4B2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 GND 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 5B2 VCC GND VCC GND 6B2 7B2 SEL Truth Table 07-0123 1 Function SEL AN to NB1 L AN to NB2 H PS8786C 05/05/07 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.) 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. Storage Temperature....................................–65°C to +150°C 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 DC Electrical Characteristics for Switching over Operating Range (TA = –40°C to +85°C, VCC = 1.5V to 2.0V) Paramenter Description Test Conditions(1) Min. Typ.(2) Max. Units 0.35 x VCC V VIH VIL Input HIGH Voltage Guaranteed HIGH level 0.65 x VCC Input LOW Voltage Guaranteed LOW level –0.5 VIK Clamp Diode Voltage VCC = Max., IIN = –18mA IIH Input HIGH Current VCC = Max., VIN = VCC ±5 IIL Input LOW Current VCC = Max., VIN = GND ±5 –0.7 –1.2 μA 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 = 25°C ambient and maximum loading. Power Supply Characteristics Parameters ICC Test Conditions(1) Description Quiescent Power Supply Current Min. Typ.(2) VCC = Max., VIN = GND or VCC Max. 200 Units μA 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 = 25°C ambient and maximum loading. Dynamic Electrical Characteristics Over the Operating Range (TA= –40º to +85ºC, VCC = 1.8V±10%, GND=0V) Parameter (3) XTALK Description Test Conditions(1) Min. Typ.(2) Crosstalk See Fig. 1 for Measurement Setup, f = 10 MHz –68 OIRR OFF Isolation See Fig. 2 for Measurement Setup, f = 10 MHz –77 BW(3) Bandwidth (3) Max. Units dB 1.8 GHz 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 = 25°C 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 R S T HP11667A PI2DBS412 50-ohm 100 -ohm 50-ohm 50-ohm 100 -ohm Fig 1. Crosstalk Setup HP4396B R S T HP11667A 50-ohm PI2DBS412 50-ohm 50-ohm 100 -ohm 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= –40º to +85ºC, VCC = 1.8V±10%) Description(1) Paramenter Min. Max. tPZH, tPZL Line Enable Time - SEL to AN, BN 0.5 8.0 tPHZ, tPLZ Line Disable Time - SEL to AN, BN 0.5 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 VOUT D.U.T 4pF CL RT 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 = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns. • The outputs are measured one at a time with one transition per measurement. Switch Positions Test Switch tPLZ, tPZL (output on B-side) 2 x VCC tPHZ, tPZH (output on B-side) GND Prop Delay 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 VDD SEL VDD/2 VDD/2 0V Output tPZL tPLZ VDD/2 VOH VOL + 0.15V tPHZ tPZH VOH – 0.15V VDD/2 VOL VOH VOL 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 Package Description ZH 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