PI3B16210 Ω) PI3B162210 (25Ω 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V, Hot Insertion 20-Bit, 2-Port BusSwitch Product Features Product Description • • • • Pericom Semiconductor’s PI3B series of BusSwitch circuits are produced in the Company’s advanced 0.35 micron CMOS technology, achieving industry leading speed. The PI3B16210 is configured as 3.3 volt 20-bit, 2-port bus switches designed with a low ON resistance (5Ω) allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise. The switches are turned ON by the Bus Enable (xOE) input signal. The PI3B162210 device has a built-in 25-ohm series resistor to reduce noise resulting from reflections, thus eliminating the need for an external terminating resistor. • • • • Near-zero propagation delay 5Ω or 25Ω switches connect inputs to outputs Fair Switching Speed - 4.5ns max. 32X384 function with flow through pinout make board layout easier Permits Hot Insertion. Vcc Operating Range: 3.0V to 3.6V Industrial operating temperature: –40°C to +85°C Packages available: – 48-pin 150-mil wide plastic QSOP (B) – 48-pin 240-mil wide plastic TSSOP (A) – 48-pin 300-mil wide plastic SSOP (V) Logic Block Diagram Product Pin Configuration 1A1 1B1 1A10 1B10 48-Pin 1OE 2A1 2B1 2A10 2B10 2OE Truth Table(1) Inputs Inputs/Outputs 1OE 2OE 1A,1B 2A,2B L L 1A = 1B 2A = 2B L H 1A = 1B Z H L Z 2A = 2B H H Z Z Product Pin Description Pin Name 1OE, 2OE 1A1-1A10, 2A1-2A10 1B1 - 1B10, 2B1 - 2B10 Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance 1 Description Bus Enable Inputs (Active LOW) Bus A Bus B PS8193B 11/09/98 PI3B16210/162210 3.3V, Hot Insertion, 20-Bit, 2-Port BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 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 II Input Current VCC = Max. VIN = VCC or GND — — ±1 µA VCC = 0V, VIN = VCC — — ±1 µA IOZH High Impedance Output Current 0 ≤ A, B ≤ VCC — — 10 µA VIK Clamp Diode Voltage VCC = Min, IIN = –18mA — –0.7 –1.2 V RON Switch On Resistance (3) VCC = 3V, VIN = 0.0V, ION = 24 mA, 64mA 16210 162210 — 20 5 28 8 40 Ω VCC = 3V, VIN = 2.4V, ION = 15mA 16210 162210 — 20 — 35 15 48 Ω Capacitance (TA = 25°C, f = 1 MHz) Parameters(4) CIN COFF CON Description Test Conditions Typ Units VIN = 0V VIN = 0V VIN = 5V 3.0 8.5 17.0 pF Input Capacitance A/B Capacitance, Switch OFF A/B Capacitance, Switch ON 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 PS8193B 11/09/98 PI3B16210/162210 3.3V, Hot Insertion, 20-Bit, 2-Port BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 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 inputs 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 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 CL = 50pF RL = 500Ω (1) Min Max Units 1 0.25 1.25 4.5 ns 1 5.0 16210 162210 CL = 50pF, RL = 500Ω, R = 500Ω Notes: 1. See test circuit and wave forms. 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 0.25ns for 50pF 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 PS8193B 11/09/98