PI3B16209 Ω) PI3B162209 (25Ω 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V, 18-Bit Bus Exchange Switch Product Features Product Description • • • • • • Pericom Semiconductor’s PI3B series of logic circuits are produced in the Company’s advanced 0.35 micron CMOS technology. Near-zero propagation delay 5Ω switches connect inputs to outputs Fast Switching speed - 5ns (max.) Operating Range: 3.0V to 3.6V Industrial operating temperature: –40°C to +85°C Packages available: – 48-pin 240-mil wide thin plastic TSSOP (A) – 48-pin 300-mil wide plastic SSOP (V) The PI3B16209 and PI3B162209 are 3.3 volt, 18-bit bus exchange switches designed with a low ON resistance (5Ω) allowing inputs to be connected directly to outputs. The devices operate as an 18-bit bus switch or as a 9-bit exchanger, providing data exchange between the four signal ports via the data select pins (S0-S2). The PI5C162209 device has a built-in 25-ohm series resistor to reduce noise resulting from reflections, thus eliminating the need for an external terminating resistor. Logic Block Diagram Product Pin Configuration S0 1A1 ONE OF NINE CHANNELS 1B1 1A1 1A 2 GND 2A1 2 A2 1B2 1A2 VCC 3A1 3A2 FLOW CONTROL GND 4A1 4A 2 5 A1 5A 2 S0 S1 S2 GND 6A1 Truth Table 6A2 Function Disconnect A1 to B1 A1 to B2 A2 to B1 A2 to B2 Disconnect S2 L L L L H H S1 L L H H L L S0 L H L H L H A1 Z B1 B2 Z Z Z A2 Z Z Z B1 B2 Z A1 to B1, A2 to B2 A1 to B2, A2 to B1 H H H H L H B1 B2 B2 B1 7A1 7A2 48 47 46 45 44 43 42 41 8 40 9 39 10 48-PIN 38 11 A, V 37 12 36 13 35 14 34 15 33 16 32 17 31 18 30 19 1 2 3 4 5 6 7 GND 20 8A1 9 A1 21 22 23 9A 2 24 8A 2 29 28 27 26 25 S1 S2 1B1 1B 2 2B1 2B 2 GND 3B1 3B2 GND 4B1 4B2 5B 1 5B2 GND 6B1 6B 2 7B1 7B2 GND 8B1 8B 2 9B1 9B 2 Product Pin Description Pin Name S0-S2 xAx xBx Note: 1. H = High Voltage Level L = Low Voltage Level Z = High Impedance 1 I/O I I/O I/O Description Select Inputs Bus A Bus B PS8192B 11/09/98 PI3B16209/162209 3.3V, 18-Bit Bus-Exchange Switch 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 .................................. –0°C to +85°C Supply Voltage Range .................................................................. –0.5V to +4.6V DC Input Voltage ......................................................................... –0.5V to +4.6V DC Output Current ................................................................................... 120 mA 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 (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.0V to 3.6V) 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 ≤ VCC — — ±1 µA VIK Clamp Diode Voltage VCC = Min., IIN = –18mA — -0.7 –1.2 V 16209 — 5 8 Ω 162209 20 28 40 16209 — 10 15 162209 20 35 48 RON Switch On Resistance (3) VCC = Min., VIN = 0.0V, ION = 48mA VCC = Min., VIN = 2.4V, ION = 15mA Ω Capacitance (TA = 25°C, f = 1 MHz) Parameters(4) Description Test Conditions Typ Units CIN COFF Input Capacitance A/B Capacitance, Switch Off VIN = 0V VIN = 0V 3 14 pF pF CON A/B Capacitance, Switch On VIN = 0V 30 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 = 3.3V, TA = 25°C ambient and maximum loading. 3. Measured by the voltage drop between A and B pin at indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (A,B) pins. 4. This parameter is determined by device characterization but is not production tested. 2 PS8192B 11/09/98 PI3B16209/162209 3.3V, 18-Bit Bus-Exchange Switch 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 10 µA ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.0V(3) 750 µA ICCD Supply Current per Input per MHz(4) VCC = Max. A and B 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 = 3.3V, +25°C ambient. 3. Per TTL driven input (control input only); A and B 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 and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design. Switching Characteristics over Operating Range Com. Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ (1) Description Conditions (2,3) Propagation Delay Ax to Bx, Bx to Ax Bus Enable Time BE to Ax or Bx Bus Disable Time BE to Ax or Bx Min. Cl = 50pF 16209 Rl = 500Ω 162209 Cl = 50pF, RL= 500Ω, R = 500Ω Max. 1 0.25 1.25 4.5 1 5 Units 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 PS8192B 11/09/98