PI5C3390 PI5C32390 (25ohm) 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 16-to-8 Multiplexer/Demultiplexer BusSwitch Product Features: Product Description: • • • • • Near-zero propagation delay Low noise, 25ohm version (PI5C32390) 5ohm 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 • Packages available: – 28-pin 150-mil wide plastic QSOP (Q) – 28-pin 300-mil wide plastic SOIC (S) Pericom Semiconductor’s PI5C series of logic circuits are produced in the Company’s advanced submicron CMOS technology, achieving industry leading performance. The 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 25ohm resistor reducing noise reflection in high-speed applications. Logic Block Diagram Product Pin Configuration A0 C0 A7 C7 AEN B0 B7 BEN Truth Table(1) AEN H L H L BEN H H L L A0 1 28 VCC B0 2 27 A7 C0 3 26 B7 A1 4 25 C7 B1 5 24 A6 C1 6 23 B6 A2 7 22 C6 28-Pin Q, S B2 8 21 A5 C2 9 20 B5 A3 B3 10 11 19 18 C5 A4 C3 12 17 B4 AEN 13 16 C4 GND 14 15 BEN Product Pin Description A Sw Off On Off On B Sw Off Off On On Function Disconnect A to C B to C A, B to C Pin Name AEN, BEN A0-A7 B0-B7 C0-C7 I/O I I/O I/O I/O Description Bus Output Enable (Active LOW) Bus A Bus B Bus C Note: 1. H = High Voltage Level L = Low Voltage Level 1 PS7030A 11/25/96 PI5C3390/PI5C32390 6:8 Multiplexer/Demultiplexer BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 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 (Inputs & Vcc Only) .... –0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) . –0.5V to +7.0V DC Input Voltage ................................................................... –0.5V to +7.0V DC Output Current ............................................................................. 120 mA 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. Power Dissipation ................................................................................... 0.5W DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ±5%) Test Conditions(1) Parameters Description 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 VCC = Max., VIN = VCC — — ±1 µA IIL Input LOW Current VCC = Max., VIN = GND — — ±1 µA IOZH High Impedance Output Current 0 ≤ A, B, C ≤ VCC — — ±1 µA VIK Clamp Diode Voltage VCC = Min., IIN = –18 mA –0.7 –1.2 V 100 — — mA — 150 — mV (3) IOS Short Circuit Current VH Input Hysteresis at Control Pins RON (4) Switch On Resistance A, B (C) = 0V, C (A, B) = VCC VCC = Min., VIN = 0.0V, ION = 48 mA PI5C3390 PI5C32390 — 20 5 28 7 40 ohm VCC = Min., VIN = 2.4V, ION = 15 mA PI5C3390 PI5C32390 — 20 10 35 15 48 ohm Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description Test Conditions Typ Units CIN COFF Input Capacitance A/B Capacitance, Switch Off VIN = 0V VIN = 0V 6 6 pF pF CON A/B Capacitance, Switch On VIN = 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. 2 PS7030A 11/25/96 PI5C3390/PI5C32390 16:8 Multiplexer/Demultiplexer BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Test Conditions(1) Parameters Description Min. Typ(2) Max. Units ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC — 0.2 30 µA ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) — — 3.5 mA ICCD Supply Current per Input per MHz(4) VCC = Max., A, B, and C Pins Open BE = GND Control Input Toggling 50% Duty Cycle — — 0.25 mA/ MHz 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 (VIN = 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 specified frequency. The A, B, and C inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed 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 Parameters t PLH t PHL tPZH tPZL tPHZ tPLZ Description (2,3) Propagation Delay A, B to/from C Bus Enable Time AEN/BEN to A, B, C Bus Disable Time AEN/BEN to A, B, C Conditions(1) Min. PI5C3390 Com Typ. CL = 50 pF RL = 500ohm — 0.25 — ns 1.5 — 6.5 ns 1.5 — 5.5 ns Max. Unit Max. Unit PI5C32390 Switching Characteristics over Operating Range Parameters t PLH t PHL tPZH tPZL tPHZ tPLZ Description Conditions(1) Min. PI5C32390 Com Typ. Propagation Delay(2,3) A, B to/from C Bus Enable Time AEN/BEN to A, B, C Bus Disable Time AEN/BEN to A, B, C CL = 50 pF RL = 500ohm — 1.25 — ns 1.5 — 6.5 ns 1.5 — 5.5 ns 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 capacitance. 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 used 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. Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 3 PS7030A 11/25/96