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Technical content

1 PS7030E 09/15/04

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  • Near-Zero propagation delay
  • Low noise, 25-ohm version (PI5C32390)
  • 5-ohm switches connect inputs to outputs (PI5C3390)
  • Direct bus connection when switches are ON
  • Ultra-low quiescent power (0.2µA typical) – Ideally suited for notebook applications
  • Packaging (Pb-free & Green available): – 28-pin 150-mil wide plastic QSOP (Q) AEN BEN A Sw B Sw Function H H Off Off Disconnect L H On Off A to C H L Off On B to C L L On On A, B to C Truth Table(1) Note: 1. H = High Voltage Level L = Low Voltage Level Pin ConfigurationBlock Diagram Pin Description Pin Name I/O Description AEN, BEN I Bus Output Enable (Active LOW) A0-A7 I/O Bus A B0-B7 I/O Bus B C0-C7 I/O Bus C PI5C3390 PI5C32390 (25-ohm) 16-to-8 Multiplexer/Demultiplexer Bus Switch Description: Pericom Semiconductor’s PI5C3390 and PI5C32390 are 16-to-8 multiplexer/demultiplexer bus switches with a low On-Resistance allowing inputs to be connected directly to outputs. The two enable inputs connect each of eight I/O to the common I/O pin. This multiplexer function can be used to select and route logic signals to form crossbar switches, isolate bus capacitance, or provide a zero delay switch connection. The bus switch creates no additional ground bounce noise or additional propagation delay. The PI5C32390 is designed with an internal 25-ohm resistor reducing noise reflection in high-speed applications. AEN BEN VCC12 8 A7B0 22 7 B7C0 32 6 C7A1 42 5 A6B1 52 4 B6C1 62 3 C6A2 72 2 A5B2 82 1 B5C2 92 0 C5A3 10 19 B3 11 C3 12 AEN 13 GND 14 A418 B417 C416 BEN15

2 PS7030E 09/15/04

PI5C3390; PI5C32390 16:8 Multiplexer/Demultiplexer Bus Switch 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Supply Voltage to Ground Potential (Outputs & D/O Only) . –0.5V to +7.0V 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 condi- tions for extended periods may affect reliability. Parameters Description Test Conditions(1) Min. Typ (2) Max. Units VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 — — V VIL Input LOW Voltage Guaranteed Logic LOW Level –0.5 — 0.8 V IIH Input HIGH Current V CC = Max., VIN = VCC ——± 1µ A IIL Input LOW Current V CC = Max., VIN = GND — — ±1 µA IOZH High Impedance Output Current 0 ≤ A, B, C ≤ VCC ——± 1µ A VIK Clamp Diode Voltage V CC = Min., IIN = –18 mA –0.7 –1.2 V IOS Short Circuit Current(3) A, B (C) = 0V, C (A, B) = VCC 100 — — mA VH Input Hysteresis at Control Pins — 150 — m V RON Switch On Resistance(4) VCC = Min., VIN = 0.0V, PI5C3390 — 5 7 ohm ION = 48 mA PI5C32390 20 28 40 VCC = Min., VIN = 2.4V, PI5C3390 — 10 15 ohm ION = 15 mA PI5C32390 20 35 48 Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description Test Conditions Typ Units CIN Input Capacitance V IN = 0V 6 pF COFF A/B Capacitance, Switch Off V IN = 0V 6 pF CON A/B Capacitance, Switch On V IN = 0V 8 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, B, and C pins at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A,B,C) pins. 5. This parameter is determined by device characterization but is not production tested.

3 PS7030E 09/15/04

1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI5C3390; PI5C32390 16:8 Multiplexer/Demultiplexer Bus Switch Power Supply Characteristics Parameters Description Test Conditions(1) Min. Typ (2) Max. Units ICC Quiescent Power V CC = Max. V IN = GND or VCC — 0.2 30 µA Supply Current ∆ICC Supply Current per V CC = Max. V IN = 3.4V(3) — — 3.5 mA Input @ TTL HIGH ICCD Supply Current per V CC = Max., — — 0.25 mA/ Input per MHz(4) A, B, and C Pins Open MHz BE = GND Control Input Toggling 50% Duty Cycle 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 (V IN = 3.4V, control inputs only); A, B, and C 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 spec ified frequency. The A, B, and C inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guarantee d by design. 5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested. PI5C3390 Switching Characteristics over Operating Range PI5C3390 Com Parameters Description Conditions (1) Min. Typ. Max. Unit tPLH Propagation Delay(2,3) CL = 50 pF — 0.25 — n s tPHL A, B to/from C R L = 500ohm tPZH Bus Enable Time 1.5 — 6.5 ns tPZL AEN/BEN to A, B, C tPHZ Bus Disable Time 1.5 — 5.5 ns tPLZ AEN/BEN to A, B, C Notes: 1. See test circuit and waveforms. 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 cap acitance. 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 use d 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. PI5C32390 Switching Characteristics over Operating Range PI5C32390 Com Parameters Description Conditions (1) Min. Typ. Max. Unit tPLH Propagation Delay(2,3) CL = 50 pF — 1.25 — n s tPHL A, B to/from C R L = 500ohm tPZH Bus Enable Time 1.5 — 6.5 ns tPZL AEN/BEN to A, B, C tPHZ Bus Disable Time 1.5 — 5.5 ns tPLZ AEN/BEN to A, B, C

4 PS7030E 09/15/04

PI5C3390; PI5C32390 16:8 Multiplexer/Demultiplexer Bus Switch 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 Packaging Mechanical: 28-pin QSOP (Q) .386 .394 .053 .069 .004 .010 SEATING PLANE .025 BSC .007 .010 .228 .244 0.150 0.157 .016 .050 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS 0.635 9.804 10.009 1.35 1.75 5.79 6.19 0.41 1.27 0.101 0.254 .008 .012 0.203 0.305 3.81 3.99 0.178 0.254 .033 0.84 .015 x 45˚ REF Detail A Detail A .008 0.20 MIN. Guage Plane .010 0.254 .041 1.04 REF .016 .035 0.41 0.89 0˚-6˚ .008 .013 0.20 0.33

Ordering Information

Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ Ordering Code Package Code Package Description PI5C3390Q Q 28-pin 150-mil wide plastic QSOP PI5C3390QE Q Pb-free & Green, 28-pin 150-mil wide plastic QSOP PI5C32390Q Q 28-pin 150-mil wide plastic QSOP PI5C32390QE Q Pb-free & Green, 28-pin 150-mil wide plastic QSOP