|Category||Logic => Bus Interface => Bus Oriented Circuits|
|Title||Bus Oriented Circuits|
|Description||24-Bit Bus Exchange Switch|
|Company||Pericom Semiconductor Corporation|
|Datasheet||Download PI5C16212 datasheet
|Cross ref.||Similar parts: CBT16212, CBTD16212, IDT74FST163212, IDTQS316212, SN74CBT16212A|
Near-zero propagation delay 5-ohm switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power (0.1µA typical) Ideally suited for notebook applications Industrial operating temperature: to +85°C Packages available: 56-pin 240-mil wide thin plastic TSSOP (A) 56-pin 300-mil wide plastic SSOP (V) 56-pin 173-mil wide plastic TVSOP (K) - PI5C16212 only
Pericom Semiconductor's PI5C series of logic circuits are produced using the Company's advanced submicron CMOS technology. The PI5C16212 and PI5C162212 are 24-bit bus exchange switches designed with a low ON resistance allowing inputs to be connected directly to outputs. This device operates a 24-bit bus switch a 12-bit exchanger that provides data exchanging between the four signal ports via the data select pins (S0-S2). To reduce noise resulting from reflections, the PI5C162212 has a built-in 25-ohm series resistor that eliminates the need for an external terminating resistor.Note: H = High Voltage Level L = Low Voltage Level Z = High Impedance
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature.............................................. to +150°C Ambient Temperature with Power to +85°C Supply Voltage to Ground Potential.......................... +7.0V DC Input Voltage....................................................... +7.0V DC Output Current................................................................ 120mA Power Dissipation....................................................................... 1W
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.
Parame te r VCC VIH VIL TA Supply Voltage High- Level Input Voltage Low- Level Input Voltage Operating Free- Air Temperature De s cription M in. °C V Units
Parame te rs VIH VIL II IOZH VIK IOS VH RON De s cription Input HIGH Voltage Input LOW Voltage Input Current High Impedance Output Current Clamp Diode Voltage Short Circuit Switch On Current(3) Input Hysteresis at Control Pins Resistance(4) VCC = Min., VIN = 0.0V, ION = 64mA VCC = Min., VIN = 2.4V, ION s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC or GND VCC = 0, VIN = VCC B - VCC = Min., IIN 18mA A (B) 0V, B (A) = VCC M in. Typ(2) M ax. mV µA Units V
Parame De s cription Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch s t Conditions VIN = 0V VIN = 0V VIN = 0V Typ. 12 M ax. 30 pF Units
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 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 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. 5. This parameter is determined by device characterization but is not production tested. 2
Parame te rs ICC ICC(3) ICCD De s cription Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per SN = GND, Control Input Toggling 50% Duty Cycle s t Conditions (1) VCC = Max. VCC = 5.5V VCC = Max., & B Pins Open VIN = GND or VCC VIN 3.4V(4) M in. 0.1 M ax. 0.2 0.25 Units µA mA mA/ MHz
Notes: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for applicable device. 2. Typical values are at VCC 5.0V, +25°C ambient. 3. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND. 4. Per TTL driven input (VIN = 2.7V, control inputs only); A and B pins do not contribute to ICC. 5. 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 or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
PI5C16212 Parame te rs tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ De s cription Propagation Delay(2,3), xAx to xBx, xBx to xAx Propagation Delay, or Bx Bus Enable Time, S to xAx or xBx Bus Disable Time, S to xAx or xBx = 500 ohms Conditions (1) Com. M in. 7.0 6.5 Units
PI5C162212 Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ De s cription Conditions (1) Com. M in. Propagation Delay(2,3), xAx to xBx, xBx to xAx Bus Enable Time, S to xAx or xBx Bus Disable Time, S to xAx or xBx = 500 ohms 6.5 ns Units
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 0.25ns 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.
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