STMUX3040 Octal SPDT high bandwidth signal switch Features ■ Supports PCIExpress signaling at 2.5Gbps ■ Supports 3.0Gbps generic data rate ■ Octal SPDT switch to support 2 PCI lanes ■ Low Ron: 5.5Ω typical ■ Internal voltage regulator ■ VCC operating range – 1.65 - 2.0V (Internal regulator bypassed) – 2.7 - 3.6V (Internal regulator active) ■ Low current consumption: 150µA ■ ESD HBM model : 2kV ■ Channel on capacitance: 6pF typical ■ Switching time speed: 9ns ■ Near to zero propagation delay: 250ps ■ Bandwidth: -3dB at 1200MHz ■ Low crosstalk: -20dB at 1200MHz ■ Bit to bit skew: 50 ps typical ■ Data and control inputs provide undershoot clamp diode ■ Wide bandwidth minimizes skew and jitter ■ Hot insertion capable ■ Supports bi-directional operation ■ -40°C to 85°C operating temperature range TQFN42 Description The STMUX3040 is a differential Single Pole Double Throw (SPDT) 2 to 1, low Ron, bidirectional signal switch designed for PCIe signaling. It is designed for very low cross-talk, low bit-to-bit skew, high channel-to-channel noise isolation and low I/O capacitance. The switch offers very little or practically no attenuation of the high speed signals at the outputs, thus preserving the signal integrity to pass stringent requirements. Applications ■ Workstation ■ PC and Notebook Table 1. Device summary July 2007 Order code Package Packaging STMUX3040 TQFN42 Tape and reel Rev 1 1/15 www.st.com 15 Contents STMUX3040 Contents 1 Functional diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Device operation table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Internal voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 4.1 Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1 DC electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.2 Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.3 Power supply characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.4 Dynamic electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.5 Dynamic switching characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.6 ESD performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2/15 STMUX3040 1 Functional diagrams Functional diagrams Figure 1. Functional diagram (Switches) Figure 2. Functional diagram (Internal regulator) V33 (2.7V-3.3V) 3.3V to 1.8V Voltage Regulator (Bypassed when V33 < 2.2V) GND Vreg and VCC GND 3/15 Pin settings STMUX3040 2 Pin settings 2.1 Pin connection Figure 3. Pin connection (Top through view) Vcc GND Vcc GND 42 41 40 39 GND 1 38 0B1 A0 2 37 1B1 A1 3 2B1 GND 4 3B1 Vcc 5 34 0B2 A2 6 33 1B2 A3 7 32 2B2 V33 8 31 SEL 9 30 3B2 Vreg GND 10 29 4B1 A4 11 28 5B1 A5 12 27 6B1 Vcc 13 26 7B1 GND 14 25 4B2 A6 15 24 5B2 A7 16 23 6B2 GND 17 22 7B2 18 19 20 21 Vcc GND Vcc GND TQFN42 4/15 STMUX3040 2.2 Pin settings Pin description Table 2. Pin description Pin number Pin Name Function 1 GND Ground 2 A0 Switch 3 A1 Switch 4 GND Ground 5 Vcc 1.65 - 2.0V Supply Tied to VREG if V33 > 2.2V 6 A2 Switch 7 A3 Switch 8 V33 2.7V – 3.3V (Internal Regulator Active) 1.65 – 2.0V (Internal Regulator Bypassed) 9 SEL Switch select pin 10 GND Ground 11 A4 Switch 12 A5 Switch 13 Vcc 1.65-2.0V Supply Tied to VREG if V33>2.2V 14 GND Ground 15 A6 Switch 16 A7 Switch 17 GND Ground 18 Vcc 1.65-2.0V Supply Tied to VREG if V33>2.2V 19 GND Ground 20 Vcc 1.65-2.0V Supply Tied to VREG if V33>2.2V 21 GND Ground 22 7B2 Switch 23 6B2 Switch 24 5B2 Switch 25 4B2 Switch 26 7B1 Switch 27 6B1 Switch 28 5B1 Switch 5/15 Pin settings STMUX3040 Table 2. Pin description (continued) 2.3 Pin number Pin Name Function 29 4B1 30 VREG 31 3B2 Switch 32 2B2 Switch 33 1B2 Switch 34 0B2 Switch 35 3B1 Switch 36 2B1 Switch 37 1B1 Switch 38 0B1 Switch 39 GND Ground 40 Vcc 1.65-2.0V Supply Tied to VREG if V33>2.2V 41 GND Ground 42 Vcc 1.65-2.0V Supply Tied to VREG if V33>2.2V Switch Output of internal regulator 22nF capacitor required here. Device operation table Table 3. Operation table 6/15 SEL Function L AN to NB1 H AN to NB2 STMUX3040 3 Internal voltage regulator Internal voltage regulator STMUX3040 is integrated with an internal voltage regulator. The voltage regulator is activated when supply voltage to the Vreg pin is more than 2.7V. If the supply to Vreg is less than 2.2V, the regulator is bypassed. Figure 4. Internal voltage regulator GND A0 A1 GND Vcc A2 2.7V3.3V A3 V33 SEL GND A4 A5 Vcc GND A6 A7 GND Vcc GND Vcc GND 42 41 40 39 1 38 2 37 3 36 4 35 5 34 6 33 7 32 8 31 9 30 3B2 Vreg 10 29 4B1 11 28 5B1 12 27 6B1 13 26 7B1 14 25 4B2 15 24 5B2 16 23 6B2 17 22 7B2 18 19 20 21 Vcc GND Vcc GND 0B1 1B1 2B1 3B1 0B2 1B2 2B2 22nF GND When internal regulator is activated: ● V33 is used as supply input ● Vreg is used as output of the internal regulator, a 22nF capacitor should be connected from this pin to ground When internal regulator is not used: ● VCC, V33 and Vreg are all connected to 1.8V supply 7/15 Maximum rating 4 STMUX3040 Maximum rating Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. 4.1 Absolute maximum rating Table 4. Absolute maximum rating Symbol Parameter Value Unit VCC Supply voltage to Ground -0.5 to +2.5 V V33 Supply voltage to internal regulator -0.5 to +4.5 V VI DC input voltage -0.5 to Vcc (1) V VIC DC control input voltage -0.5 to Vcc (1) V IO DC output current 120 mA -65 to +150 °C 300 °C Value Unit 40.8 °C/W TSTG TL Storage temperature Lead temperature (10 sec) 1. VCC = 1.8V ± 10% in regulator mode 4.2 Thermal data Table 5. Thermal data Symbol RthJA 8/15 Parameter Thermal resistance junction-ambient STMUX3040 Electrical specification 5 Electrical specification 5.1 DC electrical characteristics TA = -40 to +85°C, VCC = 1.8V ± 10% Table 6. SEL Pin Symbol Parameter Test conditions Min VIH HIGH level input voltage High level guaranteed 0.65Vcc VIL LOW level input voltage Low level guaranteed -0.5 VIK Clamp diode voltage VCC = 1.8V, IIN = -18mA IIH Input high current IIL Input low current Typ Max Unit V 0.35Vcc V -1.2 V VCC = 1.8V, VIN = VCC ±5 µA VCC = 1.8V, VIN = GND ±5 µA Max Unit 1 uA -0.8 Table 7. All signal switch pins Symbol Parameter Test Conditions Min Typ IIN Input leakage VCC = 1.8V, VIN = VCC All non-tested switches floating VIK Clamp diode voltage VCC = 1.8V, IIN = -18mA -0.8 -1.2 V RON Switch ON resistance (1) VCC = 1.8V, VIN = 0.9 to VCC, IIN = -30mA 5.5 8.0 Ω VCC = 1.8V, VIN = 0.9 to VCC, IIN = -30mA 1 1.3 Ω VCC = 1.8V, VIN = 0.9 to VCC, IIN = -30mA 0.5 1 Ω RFLAT ∆RON ON resistance flatness (1) (2) ON resistance match between channels ∆RON = RONMAX - RONMIN (2) (3) 1. Measured by voltage drop between channels at the indicated current through the switch. 2. Flatness is defined as the difference between the RONMAX and the RONMIN of the on resistance over the specified range on the same channel 3. ∆RON measured at the same VCC, temperature and voltage level. 9/15 Electrical specification 5.2 STMUX3040 Capacitance Table 8. Capacitance (TA = 25°C, f = 1MHz) Symbol 5.3 Parameter Test conditions Min Typ Max Unit COFF Port x0 to Port x1, Switch off VIN = 0V 4 pF CON Capacitance switch on VIN = 0V 6 pF Power supply characteristics ( Table 9. Power supply characteristics (TA = -40 to +85 °C) Symbol 5.4 Parameter Test conditions Min Typ Max Unit VCC Supply voltage (internal regulator inactive) 1.65 1.8 2.0 V V33 Supply voltage (internal regulator active) 2.7 3.3 3.6 V ICC Quiescent power supply current (Internal regulator inactive) VCC = 2.0 V, VIN = VCC or GND 150 500 µA ICC Quiescent power supply current (Internal regulator active) V33 = 3.3V, VIN = 1.8V or GND 250 700 µA Dynamic electrical characteristics Table 10. Dynamic electrical characteristics (TA = -40 to +85 °C, VCC = 1.8V ± 10%) Symbol XTALK OIRR 10/15 Parameter Non-adjacent channel Cross-talk Off Isolation DR Data rate per channel BW Bandwidth Test conditions Max. Unit RL = 100Ω, f = 300MHz -30 dB RL = 100Ω, f = 600MHz -20 dB RL = 100Ω, f = 1200MHz -20 dB RL = 100Ω, f = 300MHz -35 dB RL = 100Ω, f = 600MHz -28 dB RL = 100Ω, f = 1200MHz -20 dB -3dB bandwidth Min. 1200 Typ. 3.0 Gbps 1300 MHz STMUX3040 5.5 Electrical specification Dynamic switching characteristics Table 11. Dynamic switching characteristics (TA = -40 to +85 °C, VCC = 1.8V ± 10%) Symbol tPD 5.6 Parameter Test conditions Min Typ Max Unit Propagation delay VCC = 1.65V - 2.0V tPZH, tPZL Line enable time, SEL to x to x0 or x to x1 VCC = 1.65V - 2.0V 0.5 6.5 9 ns tPHZ, tPLZ Line Disable Time, SEL to x VCC = 1.65V - 2.0V to x0 or x to x1 0.5 6.5 8.5 ns tSK(O) Output skew between center port to any other port VCC = 1.65V - 2.0V 50 100 ps tSK(P) Skew between opposite transition of the same output (tPHL - tPLH) VCC = 1.65V - 2.0V 50 100 ps tON Switching delay VCC = 1.65V - 2.0V 50 ns tOFF Switching delay VCC = 1.65V - 2.0V 30 ns Max. Unit 0.25 ns ESD performance Table 12. ESD performance Symbol ESD Parameter Test Conditions Min. Typ. Air discharge (10 pulses) ±2 kV Contact discharge (10 pulses) ±2 kV IEC-61000-4-2 11/15 Package mechanical data 6 STMUX3040 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com 12/15 STMUX3040 Package mechanical data Table 13. TQFN42 mechanical data mm. Dim. Min Typ Max A 0.70 .075 0.80 A1 0 0.02 0.05 A3 0.20 b 0.20 0.25 0.30 D 3.40 3.50 3.60 D2 2 2.05 2.10 E 8.90 9 9.10 E2 7.50 7.55 7.60 e L Figure 5. 0.50 0.30 0.40 0.50 Package dimensions 13/15 Revision history 7 STMUX3040 Revision history Table 14. Revision history 14/15 Date Revision 05-Jul-2007 1 Changes Initial release STMUX3040 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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